4011 Cat Update 2012Web:SEA002 PATS ... - Seaward Group USA

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The value on the calibration certificate is the value that should be used ..... Two line alphanumeric LCD for programmin
resistance and temperature measurement where precision matters

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Contents 01-05

Introduction

Resistance Testers 06-07

DO4A

08-09

DO4000 Series

10-11

DO5000 Series

12-13

DO7Plus

14-15

DO7

16-17

DO7e

18-19

DO7010

20-21

MTS

22

DO5000-CS

23

Cable Clamps

Temperature Measurement 24-27

3000 series

28-29

DP6

Resistance Decades & Standards 30-31

005/6/8

32-33

RBB

34-35

RBC

36-37

RH9A Series

38

RM6

39

RM6N

40

RM8

41

CM5-N

42-43

RS3

44

CR

Seaward Group

A PRECISE MEASUREMENT IS A VALUABLE PIECE OF INFORMATION. AN IMPRECISE MEASUREMENT ISN’T.

We produce a wide range of high quality measuring instruments and standards and have done for over 50 years. Our range of products covers all aspects of resistance and temperature measurement. Our resistance meters range from handheld to high powered bench micro ohmmeters. We pride ourselves on accuracy and reliability of measurement with our entry level model having 1 micro ohm resolution. We offer a wide range of micro ohmmeters so we can provide the best instrument for your resistance measurement needs. To compliment our range of units we also have all the accessories you could ever need, these range from cable clamps with built-in water baths to a calibration resistor. We also have an industry leading range of thermometers, these units are upgradeable to take up to 8 extra channels, giving 10 input channels, this makes our units ideal for use in medical autoclaves where 9 channels are required for measuring, with one channel for reference. Our thermometers offer accuracy of 0.01oC, with a resolution of 0.001oC. We also offer the ability to mix and match between Pt25, Pt100 and thermocouples, these features make this range of units unchallenged in the industry. Cropico also have a range of Resistance Decade boxes and Resistance standards.

We have Resistance Decade boxes

covering ranges from 0.001 ohm to 1 Tera ohm. Some of the high accuracy decade boxes are suitable for Pt100 simulation. Our Resistance standards are among the most stable in the world, having typical stability of 0.001% over the year, this is achieved by using only the best and most carefully selected components. We also believe that flexibility is key to customer satisfaction, therefore, if you want special jigs, fixtures or cables please let one of our dedicated staff know and we will be able to work out a solution.

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RESISTANCE MEASUREMENT Cropico specialise in low resistance measurement and offer a

the ohmmeter and the voltage across Rx is compared with the

variety of ohmmeters to cover the various applications and

voltage across this internal standard. From the ratio of these

customer circumstances. Typical applications are listed on

two voltages the resistance value of Rx is calculated and

the next page.

displayed. Because the same current is passed through both

Some applications and testing standards require special leads

the standard and the Rx and the ratio is calculated, the current

and jigs for connecting to the sample under test. We offer a

does not need to be a precise value, all that is required is that

wide range of connecting leads, and have a number of

the current is stable for the period during which each

standard jigs available. We will always be happy to supply

measurement is made, typically 0.5 seconds.

special jigs if required, all we need is the drawing, a description of the application, or a sample of the item to be measured. These application notes are intended to explain good measurement practice and highlight some of the more

The most common cause of errors when making low resistance measurement is due to poor or inappropriate connection of the Rx. Connections should be clean, mechanically firm and free from oxides which can cause an insulating effect.

common sources of error.

Measuring Current Four Terminal Measurement

It is a misconception by a lot of customers that they must have

When measuring resistance below 100 ohm it is advisable to

a high measuring current, the higher the better they believe.

use a four wire measurement technique, this is often referred to

This was true of the older digital instruments and their

as a Kelvin or Thomson configuration. By using this type of

predecessor, the Kelvin Bridge. High currents were needed to

measurement configuration the connecting lead resistance is

realise sufficient voltage across Rx measurement.

not included in the measurement, and the need for lead balancing and nulling is eliminated.

With today’s measuring components and techniques we are able to reliably and consistently measure these low

The measuring current is passed through the unknown

voltages and make reliable and accurate measurements at

resistance Rx using the current leads. The placing of these

the low currents. The disadvantages of using high currents

leads is not critical but should always be outside the voltage

are; added cost, added weight to instrument, increased size

leads. The voltage across Rx is measured with the voltage

of instrument and less measuring time when batteries are

probes and these should be placed at exactly the points where

used. Test current heats up the Rx and changes its value,

the resistance is to be measured. The measuring current is

and possible introduction of thermal E.M.F’s which will affect

simultaneously passed through an internal reference resistor in

the reading accuracy.

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There

are

however,

some

applications

where

Test

for example Nickel Plated Brass connecting clips can cause

Specifications demand higher measuring currents and there is

very large thermal E.M.F.’s to be generated when connected to

an argument that says a higher test current also tests the

copper wires. For best results unplated copper or brass leads

mechanical integrity of joints, i.e. if only a strand of wire is

and fittings should be used.

making the connection a high test current would burn away this strand. We believe there are better and more reliable ways of testing a joint’s mechanical integrity.

Possible Measurement Errors Poor Connection: Most causes of measurement error can be traced back to poor or inconsistent connection to the object under test. In many cases it is desirable, if not essential, to make a jig to suit the particular component, this ensures that the voltage connections are always made at the same point on the sample. We offer a variety of jigs and test leads, detailed in the product accessory sections.

Thermal E.M.F: Another source of error can be thermal E.M.F. When two dissimilar metals are joined together an E.M.F. can be generated (thermocouple effect). Most ohmmeters use a dc measuring system to ensure true DC resistance, and not AC impedance, is measured. If the Rx resistance is also generating an E.M.F. it is obvious that this will add or subtract to the E.M.F. measured at the voltage connections. This is overcome by making two measurements and reversing the current connections on the second measurement. The two readings are averaged to give the correct answer; Rx = (R1 + R2)/2. Most of the Cropico ohmmeters have the ability to select forward or reverse measurement current and to automatically average the two readings thus displaying the correct value. Simple precautions should also be taken when making connections. The material used should be carefully selected,

F O R F U R T H E R I N F O R M AT I O N V I S I T W W W . c r o p i c o . C O m 03

Typical Applications

unit is then run at full load for a specified period and then the

There are many reasons why resistance of material is

resistance measured again from the change in resistance value,

measured, and here are a few:

so the internal motor / generator temperature can be determined. Our ohmmeters are also used to measure the

■ Manufacturers of components such as resistors, inductors

individual coils of a motor winding to ensure there are no short

and chokes all have to verify that their product meets the

or open circuit turns and that each coil is balanced.

specified resistance tolerance, end of production line and ■ Those in the Automotive Industry need to measure the

quality control testing.

resistance of Robot Welding Cables to ensure that the weld ■ Manufacturers of switches, relays and connectors all need to

quality does not deteriorate. Cropico products can also be

verify that the contact resistance is below pre specified limits,

used to measure battery lead crimp connectors, air bag

end of production line testing and quality control.

detonator resistance, resistance of wiring harnesses and quality of crimp connectors on components.

■ Cable manufacturers must measure the resistance of the copper wires they produce. Resistance too high means that the

■ Fuse manufacturers need to measure resistance for

current carrying capability of the cable is reduced, resistance

quality control.

too low means that the manufacturer is being too generous on the cable diameter using more copper than he needs to, this

■ Resistance bonding measurements on aircraft and military

can be very expensive.

vehicles must be measured. It is necessary to ensure that all equipment installed in aircraft is electrically connected to the air

■ Installation and maintenance of power cables, switchgear

frame, this includes galley equipment. Tanks and other military

and voltage tap changers require the cable joints and switch

vehicles have the same requirements. Producers and users of

contacts to be of the lowest possible resistance thus avoiding

large electrical currents all need to measure distribution joint

the joint or contact becoming excessively hot. A poor cable

resistance, bus bars and connectors to electrodes for

joint or switch contact will soon fail due to this heating effect.

electroplating.

Routine preventative maintenance with regular resistance ■ Railway utilities including trams and underground railways

checks ensures the best possible life performances.

(Metro) use the equipment for the measurement of power ■ Electric Motor and Generator manufacturers need to

distribution cable joints. The resistance of rail track joints

determine the maximum temperature reached under full load.

also needs measuring as the rails are often used for

To determine this temperature, the temperature coefficient of

signalling information.

the copper winding is used. The resistance is first measured with the motor / generator cold i.e. at ambient temperature, the

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PRODUCT COMPARISON TABLE FOR RESISTANCE MEASUREMENT 4000

4001

4002

DO4A

DO6

DO7e

DO7

DO7Plus

DO7010

DO5000

DO5001

DO5002

40mΩ

40mΩ

4mΩ

40mΩ

20mΩ

6mΩ to

600µΩ to

6mΩ to

6mΩ to

3mΩ to

3mΩ to

200mΩ to

to 4kΩ

to 4kΩ

to 400Ω

to 4kΩ

to 200kΩ

600Ω

60Ω

6KΩ



30kΩ

30kΩ

30kΩ

Resolution

10µΩ

10µΩ

1µΩ

10µΩ

1µΩ

1µΩ

0.1µΩ

0.1µΩ

1µΩ

0.1µΩ

0.1µΩ

10µΩ

Accuracy

0.1%

0.1%

0.1%

0.1%

-

0.25%

0.25%

0.05%

0.2%

0.03%

0.03%

0.03%

Man/Auto

Yes

Yes

Yes

-

Yes

Yes

-

Yes

Yes

Yes

Yes

Yes

Measuring

1mA to

1mA to

1mA to

1mA to

9µA to

1mA to

1mA to

100mA to

100mA to

10µA to

10µA to

10µA to

Current

100mA

100mA

1A

100mA

900mA

10A

10A

10A

10A

10A

10A

100mA

programmable

programmable

programmable

Ranges

Range

Auto Average Mains/Battery

Yes

Yes

Yes

-

-

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Mains/Batt

Mains

Mains/Batt

Mains/Batt

Mains/Batt

Rechargeable

Mains

Mains/Bat

Mains

45V rms

415V rms

415V rms

415V rms

Battery

Battery

Battery

Rechargeable Option

Rechargeable Option

Rechargeable Option

415V rms

415V rms

415V rms

Input

Battery 415V rms

45V rms

415V rms

415V rms

Protection

EN61010-1: 2001 cat 3

-

Yes

-

-

Yes

-

-

Yes

-

Yes

Yes

Yes

Hi/Low Limits

-

-

-

-

Yes

-

-

Yes

Yes

Yes

Yes

Yes

Data Logging

-

-

-

-

-

-

-

Yes

Yes

Yes

Yes

Yes

Interfaces

-

-

-

-

RS232

-

RS232

RS232/

RS232

Temp Compensation

USB Fast Measure

-

-

-

-

-

-

-

-

-

RS232 /

RS232 /

RS232 /

IEEE488 / PLC

IEEE488 / PLC

IEEE488 / PLC

50 meas. / s

50 meas. / s

50 meas. / s

Mode

INDUSTRY COMPARISON TABLE FOR RESISTANCE MEASUREMENT Ohmmeter

DO4000 Series

Automotive

Aerospace

Cable

Calibration Labs

Manufacturers of vehicles and components motors, alternators, connectors, cable harnesses, switches

Bonding resistance (metallization) of aircraft frames and all equipment

Measurement of cable resistance

Calibration standards





DO4A ■

DO6



DO7





Measurement of motor, generator and transformer resistance





DO5000 Series

Drivers and Distribution electrical catalogues machines





Military

Manufacturing

Utilities; electrical, water and gas

Army, Navy, Air force, bonding resistance of vehicles and equipment. Calibration of equipment

Resistance measurement of components, switches, connectors, crimp joints, fuses etc

Measurement of power cable joints, underground and pylon. Measurement of earthing resistance and contactor resistance in substations























DO7e





DO7Plus





DO7010





■ ■































F O R F U R T H E R I N F O R M AT I O N V I S I T W W W . c r o p i c o . C O m 05

RESISTANCE TESTERS

D04A RUGGED, PORTABLE DIGITAL OHMMETER WITH 415V PROTECTION, DIGITAL CALIBRATION & 4000 COUNT

The DO4A is a practical instrument for low resistance measurement, ideal for use in the workshop, field or test facilities.

key feature

DO4A

True 4 wire measurement eliminates lead resistance errors



tilt handle. The DO4A has many advanced features, including

6 push button ranges 40 milli ohm… 4 kilo ohm with long scale length



protection up to 415 volts rms, digital calibration and long scale

10 micro ohm resolution on 40 milli ohm range



length (4000 count). The rechargeable sealed lead acid battery

Input protection up to 415 Volts rms



means real portability with more than 14 hours continuous

Zero control thermal E.M.F. compensation



operation, without the problems normally associated with other

Digital calibration



battery types. Full measurement capability is maintained while

Mains / rechargeable battery operation



charging. For ease of operation the control functions have been

Open circuit lead warning



Rugged industrial maintenance free design



Universal mains supply 100 / 200 / 220/ 240 Volts +10% - 13%



It is of rugged construction contained in an aluminium case with

kept to a minimum and are clearly marked. It is of course direct reading, warning LEDs illuminate when an open circuit lead condition is detected. Over range and low battery indication is also provided. The DO4A is supplied ready for immediate use with battery, mains cord and measuring leads, no extras are normally necessary. The 15mm LCD provides easy viewing and the instrument can be used in any position for many and varied applications. The test leads provided have a length of 1 metre with spade tags for connection to the ohmmeter terminals. They are terminated in combined current and potential probes that will accept conductor diameters up to 6mm.

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D04A SPECIFICATIONS Range

Resolution

Typical Current

Accuracy @ 20°C ±5°C 1 year

Temperature Coefficient/°C

4kΩ



100µA

±(0.05% Rdg +0.02% FS)

30ppm Rdg + 1ppm FS

400Ω

100mΩ

1mA

± (0.05% Rdg +0.02% FS)

30ppm Rdg + 1ppm FS

40Ω

10mΩ

10mA

± (0.05% Rdg +0.02% FS)

30ppm Rdg + 1ppm FS



1mΩ

10mA

± (0.05% Rdg +0.03% FS)

30ppm Rdg + 4ppm FS

400mΩ

100µΩ

10mA

± (0.05% Rdg +0.05% FS)

30ppm Rdg + 25ppm FS

40mΩ

10µΩ

100mA

± (0.05% Rdg +0.05% FS)

30ppm Rdg + 25ppm FS

Measurement

Safety

4 terminal Kelvin/Thomson principle eliminates errors due to lead resistance

EN 61010-1 EMC-EN 61236 Dimensions

Display 15mm LCD 4000 count with automatic decimal point and polarity indication

15mm x 250mm x 88mm (W H D) approx 1/2 19” rack 2U high 467mm x 374mm x 216mm packed in carton

Ranges

Mass

6 push button selected with LED indication

3.5kg approx. 4.5kg packed in carton

Terminals

Auto Zero

4mm binding posts accept spade tags and 4mm banana plugs

Permits the automatic zero of amplifiers and external circuits, eliminating errors due to thermal E.M.F.

Working Temperature 0°C to +40°C re. humidity 80% max. non-condensing

Protection

Storage Temperature

415 Vrms maximum at the measuring terminals will blow internal protection fuse

-20°C to +50°C Calibration Mains Supply

Digital security key protected

100/120/220/240V +10% to 13% 47Hz to 63Hz 20VA

Battery 6V 2.8Ah sealed lead acid battery with built-in charger. 14 hour typical operating time on lowest range, 28 hours typical on other ranges. Internal charger and automatic switch off

DO4A Options

Code

Item

C02

1 metre cable clamp with metal base for the precise measurement of 1 metre cable samples 0.1…100mm2

C02A

1 metre cable clamp with metal base for the precise measurement of 1 metre cable samples 1…1000mm2

C03

1 metre cable clamp with water bath for the precise measurement of 1 metre cable samples 1…1000mm2

CB01

Carrying bag

HS01

Duplex handspikes with 3 metre lead length

HS02

Duplex handspikes with 3 and 15 metre lead length

LS03

Lead set with 2 x 3 metre leads terminated in large Kelvin clips type KC3

LS04

Lead set with 3 metre and 15 metre lead length terminated in large Kelvin clips type KC3

LS05

Lead set with 4 x 1 metre leads terminated in banana plugs, 4 x crocodile clips, 4 x test probes and 2 x Kelvin clips type KC1

LS06

Lead set with 1 metre leads terminated in miniature Kelvin clips type KC2

MTS2

Calibration standard

CHO1

Concentric handspikes

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RESISTANCE TESTERS

D04000 SERIES HAND HELD, GENERAL PURPOSE, PORTABLE DIGITAL MICROHMMETERS COMBINING ALL THE FEATURES YOU MIGHT NEED The series D04000 digital micro ohmmeters offer true

key feature

portability without any sacrifice to accuracy or functionality.

True 4 terminal measurement eliminates lead resistance errors





These ruggedly constructed instruments are housed in a

Measuring range from 40 milli ohm to 4 kilo ohm





stylish plastic case with easy to use keyboard.

Measuring range from 4 milli ohm to 400 ohm

The

measured values are displayed on a large LCD screen which

10 micro ohm resolution

allows for ease of viewing.

1 micro ohm resolution

Automatic or manual range selection is available and many advanced features are included. The table below will help with your selection needs as there are 3 models in the range.

DO4000 DO4001 DO4002

■ ■

■ ■

True zero capabilities







Digital Calibration







Auto / Manual range selection







Automatic temperature compensation



Temperature measuring range -50 to +800 oC



Open circuit lead warning on display





100mA measuring current





Auto power off to maximise battery life MEIGaN Compliant

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1A measuring current

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D04000/DO4001 SPECIFICATIONS Range

Resolution

Typical Current

Accuracy @ 20°C ±5°C 1 year

Temperature Coefficient/°C

4kΩ



100µA

±(0.05% Rdg +0.02% FS)

30ppm Rdg + 1ppm FS

400Ω

100mΩ

1mA

± (0.05% Rdg +0.02% FS)

30ppm Rdg + 1ppm FS

40Ω

10mΩ

10mA

± (0.05% Rdg +0.02% FS)

30ppm Rdg + 1ppm FS



1mΩ

10mA

± (0.05% Rdg +0.03% FS)

30ppm Rdg + 4ppm FS

400mΩ

100µΩ

10mA

± (0.05% Rdg +0.05% FS)

30ppm Rdg + 25ppm FS

40mΩ

10µΩ

100mA

± (0.05% Rdg +0.1% FS)

30ppm Rdg + 25ppm FS

D04002 SPECIFICATIONS Range

Resolution

Typical Current

Accuracy @ 20°C ±5°C 1 year

Temperature Coefficient/°C

400Ω

100mΩ

1mA

±(0.05% Rdg +0.02% FS)

30ppm Rdg + 1ppm FS

40Ω

10mΩ

10mA

± (0.05% Rdg +0.02% FS)

30ppm Rdg + 1ppm FS



1mΩ

100mA

± (0.05% Rdg +0.02% FS)

30ppm Rdg + 1ppm FS

400mΩ

100µΩ

1A

± (0.05% Rdg +0.03% FS)

30ppm Rdg + 4ppm FS

40mΩ

10µΩ

1A

± (0.05% Rdg +0.05% FS)

30ppm Rdg + 25ppm FS

4mΩ

1µΩ

1A

± (0.05% Rdg +0.1% FS)

30ppm Rdg + 25ppm FS

Measurement

Dimensions

4 terminal Kelvin/Thomson principle eliminates errors due to lead resistance

215mm x 130mm x 55mm (W H D) approx 467mm x 374mm x 216mm packed in carton

Display

Mass

15mm LCD 4000 count with automatic decimal point and polarity indication

0.8kg approx

Ranges

Buttons to null measurement offsets

6 automatic or manual selection with LED indication Terminals

Zero & Ave

Protection

4mm safety sockets

415 Vrms maximum at the measuring terminals will blow internal protection fuse

Working Temperature

Calibration

0°C to +40°C rel. humidity 80% max. non-condensing

Digital security code protected

Storage Temperature

Battery

-20°C to +50°C

Removable pack with 5 1.5V non-rechargeable batteries. Separate

Safety

rechargeable pack, charger and docking station as optional extras

EN 61010-1 EMC-EN 61236

D04000 series Options

Code

Item

4000-01

Rechargeable battery pack includes battery cassette with rechargeable batteries. Docking station also acts as bench stand and charger

4000-02

Replaceable battery holder with non-rechargeable batteries

4000-03

Replaceable battery holder with rechargeable batteries

CB02

Carrying bag with shoulder strap and lead pouch that has a clear front panel to enable full operation

HS01-P

2 x Duplex handspike with 3 metre lead length

HS02-P

Duplex handspikes with 3 and 15 metre lead length

LS03-P

Lead set with 3 metre leads terminated in large Kelvin clips type KC3

LS04-P

Lead set with 3 metres and 15 metres lead length terminated in large Kelvin clips type KC3

LS05

Lead set with 4 x 1 metre leads terminated in banana plugs, 4 x crocodile clips, 4 x test probes and 2 x Kelvin clips type KC1

LS06-P

Lead set with 1 metre leads terminated in miniature Kelvin clips type KC2

MTS2

Calibration standard

CHO1

Concentric handspikes

RB

Rubber boots

PT01-4000

Rod type Pt100 probe with 2 metre lead

PT03-4000

Stubby Pt100 probe for ambient temperature measurement

F O R F U R T H E R I N F O R M AT I O N V I S I T W W W . c r o p i c o . C O m 09

RESISTANCE TESTERS

D05000 SERIES A COMPREHENSIVE RANGE OF MAINS AND BATTERY POWERED DIGITAL MICROHMMETERS WITH TEMPERATURE COMPENSATION The D05000 series of digital micro ohmmeters offer flexibility

key feature

of measurement with high accuracy and exceptional

True 4 terminal measurement eliminates lead resistance errors





Measuring range from 3 milli ohm to 30 kilo ohm





functionality. The D0500 series encompass all the features required in an ohmmeter in one practical instrument.

DO5000 DO5001 DO5002 ■

This series of instruments have programmable measuring

Measuring range from 200 milli ohm to 30 kilo ohm



current in 100 steps, ensuring that we have a model in the

10 micro ohm resolution



range suitable for your application.

100 nano ohm resolution





True zero capabilities







measurement to 20oC and Hi / Lo limits permits sorting of

Digital Calibration







components with the minimum of fuss. The D05000 series all

Automatic temperature compensation with programmable coefficients







Open circuit lead warning LED







Current range from 10µA to 10A





Automatic

temperature

compensation

references

the

have the ability to take an external Pt100 sensor, this is easily plugged into the socket on the front of the unit. All these functions are available as standard as well as a data logging function which stores up to 4000 date and time

Current range from 10 µA to 10mA

stamped readings. Statistical analysis of these values allows

Programmable measuring current 10% to 100% in 1% steps







High Accuracy 0.03%







Fast measuring capability of 50 measurements per second







laboratory testing of samples, production line testing, and

Programmable High Low Limits with red / green lamps on front panel







with the addition of the IEEE-48 or PLC interfaces, the

Open Circuit voltage limit mode 20mV / 50mV maximum







D05000 series may be remotely controlled and integrated into

Measuring current selection +I / -I and Auto average







Data logging with statistical analysis







Cable length calculations







you to display the Max / Min / Average values as well as the peak to peak and standard deviation. The range of D05000 instruments is ideally suited for

an automated testing system. RS-232 fitted as standard.



When the units are used in the fast measuring mode they can easily do 50 measurements per second. These features are available on all of the models in the range. The D05001 only differs from the D05000 in that it can be



Rechargeable batteries built in RS-232 Interface







mains and battery powered. The D05002 has a lower current capability than both of the other models.

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D05000/DO5001 SPECIFICATIONS Range

Resolution

Minimum Current

Maximum Current

Accuracy at Full Rated Current

30kΩ 3kΩ 300Ω 30Ω 3Ω 200mΩ 30mΩ 3mΩ

1Ω 100mΩ 10mΩ 1mΩ 100µΩ 10µΩ 1µΩ 100nΩ

10µA

100µA

±(0.03% Rdg +0.02% FS)

100µA 1mA 10mA 100mA 1A 1A 1A

1mA 10mA 100mA 1A 10A 10A 10A

±(0.03% ±(0.03% ±(0.03% ±(0.03% ±(0.03% ±(0.03% ±(0.03%

Rdg Rdg Rdg Rdg Rdg Rdg Rdg

+0.01% +0.01% +0.01% +0.01% +0.01% +0.01% +0.02%

FS) FS) FS) FS) FS) FS) FS)

D05002 SPECIFICATIONS Range

Resolution

Minimum Current

Maximum Current

30kΩ 3kΩ 300Ω 30Ω 3Ω 200mΩ

1Ω 100mΩ 10mΩ 1mΩ 100µΩ 10µΩ

10µA 100µA 1mA 10mA 10mA 10mA

100µA 1mA 10mA 100mA 100m A 100m A

Measurement 4 terminal Kelvin/Thomson principle eliminates errors due to lead resistance Display LCD graphics panel with backlit 30,000 count Ranges 8 automatic or manual selection Terminals 4mm safety sockets Working Temperature 0°C to +45°C rel. humidity 80% max. non-condensing Storage Temperature -20°C to +60°C Mains Supply 115/230V, +/-10%, 47Hz to 63Hz, 250VA Safety EN 61010-1 EMC-EN 61236 Dimensions 339mm x 324mm x 131mm (W H D) approx

Accuracy at Full Rated Current ±(0.03% ±(0.03% ±(0.03% ±(0.03% ±(0.03% ±(0.03%

Rdg Rdg Rdg Rdg Rdg Rdg

+0.02% +0.01% +0.01% +0.01% +0.01% +0.01%

FS) FS) FS) FS) FS) FS)

Mass DO5000 46x47x31 12kg DO5001 46x47x31 15kg DO5002 46x47x31 11kg Auto Zero Permits the zero of measurement values Average Automatic average and display of measurement with forward and reverse current Auto Temperature Compensation Automatically references measurement to temperature of 20°C or user defined temperature. User coefficients may be used. External Pt100 senses temperature manual value can be used Hi / Lo Limits Limit values can be set over entire measurement range Calibration Digital pass code protected Protection 415 Vrms between any of the measuring terminals.

D05000 series Options

Code

Item

C02

1 metre cable clamp with metal base for the precise measurement of 1 metre cable samples 0.1…100mm2

C02A

1 metre cable clamp with metal base for the precise measurement of 1 metre cable samples 1…1000mm2

C03-DO5000

1 metre cable clamp with water bath for the precise measurement of 1 metre cable samples 1…1000mm2

DO5000-CS

Calibration standard

HS01-P

Duplex handspikes with 3 metre lead length

HS02-P

Duplex handspikes with 3 and 15 metre lead length

IEEE-DO5

Interface IEEE-488

IEEE-L01

IEEE-488 cable 1 metre

LS03-P

Lead set with 3 metre leads terminated in large Kelvin clips type KC3

LS04-P

Lead set with 3 metre and 15 metre lead length terminated in large Kelvin clips type KC3

LS05

Lead set with 4 x 1 metre leads terminated in banana plugs, 4 x Crocodile clips, 4 x test probes and 2 x Kelvin clips type KC1

LS06-P

Lead set with 1 metre leads terminated in miniature Kelvin clips type KC2

PLC-DO5

PLC Interlace and Analogue output

PT02-DO5

Temperature probe with 2 metre lead length

CHO1

Concentric handspikes

F O R F U R T H E R I N F O R M AT I O N V I S I T W W W . c r o p i c o . C O m 11

RESISTANCE TESTERS

D07PLUS RUGGED DIGITAL MICROHMMETER FOR LOW RESISTANCE MEASUREMENT, WITH BUILT IN TEMPERATURE COMPENSATION The DO7Plus is a 10A Microhmmeter, suitable for applications within Aerospace, Utilities, Cable or Machine Manufacturers or where a

key feature

DO7 +

On screen real time graphical plotting cooling curve facilities with peak resistance value calculator



case (when closed or IP53, lid open) it is ruggedly constructed to

It’s fast, reading rate of 2 readings per second



ensure durability.

Measuring ranges from 6 mohm to 6 kohm



Resolution 100 nohm on 6 mohm range



Backlit LCD graphic panel with programmable timer for battery conservation



Single pulse measurement for fast resistance tests



Continuous measurement current for inductive tests



The unit has a display length of 60000 counts and auto averaging of

Full test lead continuity testing and diagnostic display



forward and reverse measurement removes thermal emf differences.

Multi lingual - Display available in English, French, German, Spanish or Italian



RS-232 and USB interfaces



cooling curve is required to plot peak resistance. Sealed in an IP67

The DO7Plus has a backlit LCD graphics panel, full QWERTY keyboard, temperature compensation via optional Pt100 probe, and built in coefficients for Copper and Aluminium as well as user defined. Full cooling curve facilities are built in, with real time graphical plotting on the LCD. Data log memory contents can be plotted and a curve fitted to calculate the peak resistance value when t=0.

Connectivity is improved with both USB and RS232 for data downloading. The internal memory holds up to 1000 date and time stamped readings and which can be viewed on the LCD or downloaded with the free software provided, as CSV file to a PC for further analysis. The data log memory using the latest FRAM technology which offers unlimited read/write cycles and over 10 years of data retention, without relying on internal batteries. The unit has built in rechargeable batteries which will provide up to 1 hour of continuous use at 10A, and up to 20 hours at all other ranges.

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D07 PLUS SPECIFICATIONS Range

Current

Resolution

FSV

Uncertainty

6.0000 mΩ

10 A

100 nΩ

60 mV

0.05% Rdg +0.01%FS

60.000 mΩ

1A

1 µΩ

60 mV

0.05% Rdg +0.01%FS

600.00 mΩ

100 mA

10 µΩ

60 mV

0.05% Rdg +0.01%FS

6.0000 Ω

10 mA

100 µΩ

60 mV

0.05% Rdg +0.01%FS

60.000 Ω

1 mA

1 mΩ

60 mV

0.05% Rdg +0.01%FS

600.00 Ω

100 µA

10 mΩ

60 mV

0.05% Rdg +0.01%FS

6.0000 kΩ

100 µA

100 mΩ

600 mV

0.05% Rdg +0.01%FS

Measurement

Dimensions

4 terminal Kelvin / Thompson principle eliminates errors due to lead

358mm X 269mm X 155mm

resistance

Mass

Display

6kg (instrument only)

60,000 count + sign LCD graphics panel with backlight Select display value of °C or °F

Calibration Digital Password protected, manual or via remote interface

Ranges

Battery

7 resistance ranges

Internal, fixed NiMh battery pack, Gas Gauge circuits to monitor

Terminals

battery capacity. Internal automatic FAST / TRICKLE battery

4mm safety sockets

Charger. DC input from 9V to 36V.

Working Temperature

Mains Supply

0 deg C to 40 deg C

External mains psu 90V – 253V, 47Hz to 63Hz with interchangeable plugs.

Storage Temperature -20 deg C to +50 deg C Safety Conforms to EN 61010-1:2001 50V Cat 3

D07PLUS Options

Code

Item

LS05

Lead set with 4 x 1 metre leads terminated in banana plugs, 4 x Crocodile clips, 4 x test probes and 2 x Kelvin clips type KC1

LS03-P

Lead set with 3 metre leads and terminated with large Kelvin clips type KC3

LS04-P

Lead set with 3 metres and 15 metres lead length terminated in large Kelvin clips type KC3

HS01-P

2 x Duplex handspike with 3 metre lead length

HS02-P

Duplex handspikes with 3 and 15 metre lead length

CH01

Concentric handspikes 3M lead length

MTS 5

Calibration Standard Note: Lead sets can be supplied in different lengths to order

C02

1 metre cable clamp with metal base for the precise measurement of 1 metre cable samples 0.1…100mm2

CO2A

1 metre cable clamp with metal base for the precise measurement of 1 metre cable samples 1…1000mm2

C03-DO7 Plus

1 metre cable clamp with water bath for the precise measurement of 1 metre cable samples 1…1000mm2

Pt02-DO7 Plus

Pt100 temperature probe with 1 metre lead

F O R F U R T H E R I N F O R M AT I O N V I S I T W W W . c r o p i c o . C O m 13

RESISTANCE TESTERS

D07 RUGGED DIGITAL MICROHMMETER FOR LOW RESISTANCE MEASUREMENT

The DO7 is a practical instrument for low resistance

key feature

measurement, ideal for use in the workshop, field or test facilities.

True 4 terminal measurement eliminates lead resistance errors



10 Amp measuring current



Rechargeable batteries with built-in charger



Measuring range 600 micro ohm...60 ohm



Resolution 0.1 micro ohm on 600 micro ohm range



0.8" LED display daylight viewable



Auto average of forward and reverse measurement



Remote start socket



automatically to a trickle maintenance charge. Warning LEDs

All solid state design



illuminate when an open circuit lead condition is detected. A front

Wide range of leads and accessories available



panel socket provides a serial RS232 output for connection to an

RS232 printer output



It is of rugged construction in a sealed ABS plastic case with lid and carrying handle. The DO7 has many advanced features, including protection up to 415 volts rms at the measuring terminals, digital calibration and long scale length, 6000 count. Rechargeable batteries mean real portability with more than 1 hour of continuous operation on the lowest ranges, and 20 hours on all others. Battery charge indicators are provided. The internal charger will boost charge to 90% of full charge, switching

DO7

external printer or PC, and a socket is also provided for the connection of an external start switch, e.g. a foot switch. The DO7 is supplied ready for use with batteries, mains cord and test leads, no extras are normally necessary. For special lead sets we offer a variety of different styles which are listed on the accessories page, together with calibration standards.

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D07 SPECIFICATIONS Range

Resolution

Typical Current

Accuracy at 20°C ±5°C, 1 Year

Temp Coefficient/°C

60Ω

10mΩ

1mA

±(0.15% Rdg +0.05% FS)

40ppm Rdg + 30ppm FS



1mΩ

10mA

±(0.15% Rdg +0.05% FS)

40ppm Rdg + 30ppm FS

600mΩ

100µΩ

100mA

±(0.15% Rdg +0.05% FS)

40ppm Rdg + 30ppm FS

60mΩ

10µΩ

1A

±(0.15% Rdg +0.05% FS)

40ppm Rdg + 30ppm FS

6mΩ

1µΩ

10A

±(0.2% Rdg +0.01% FS)

40ppm Rdg + 30ppm FS

600µΩ

0.1µΩ

10A

±(0.2% Rdg +0.2% FS)

40ppm Rdg + 250ppm FS

Measurement

Dimensions

4 Terminal Kelvin / Thomson principle eliminates errors due to lead resistance. Open circuit measurement voltage = 2V dc

343mm x 327mm x 152mm (W D H) approx Mass

Display

8kg approx

0.8” LED 6000 count with automatic decimal point and polarity indication

Protection 415 Vrms maximum at input terminals

Ranges 6 push button selected with LED indication

Calibration Digital, security key protected

Terminals 6mm binding posts accept spade tags and 4 mm banana plugs

Battery Sealed lead acid, rechargeable cells giving a minimum of 1 hour of

Working Temperature

continuous measurement on the lowest 10 amp ranges and 20

0°C to 40°C rel. humidity 80% max. non-condensing Storage Temperature

hours on all other ranges. Internal charger with battery state indicator

-20 to +50°C

Average

Mains Supply 100 / 120 / 220 / 240 Volts +10% - 13% 47Hz to 63Hz. max 80VA

Automatic average and display of measurement with forward and reverse current

Safety EN 61010-1 Protective Class 1

D07 Options

Code

Item

CB03

Lead bag attaches to lid of DO7, must be ordered with DO7

DO7-RS

Remote start plug

FS01

Remote start foot switch

HS01

Duplex handspikes with 3 metre lead length

HS01-RS

Duplex handspikes with 3 metre lead length with remote start button

HS02

Duplex handspikes with 3 and 15 metre lead length

HS02-RS

Duplex handspikes with 3 and 15 metre lead length with remote start button

LS03

Lead set with 3 metre leads terminated in large Kelvin clips type KC3

LS04

Lead set with 3 metre and 15 metre lead length terminated in large Kelvin clips type KC3

LS05

Lead set with 4 x 1 metre leads terminated in banana plugs, 4 x Crocodile clips, 4 x test probes and 2 x Kelvin clips type KC1 in miniature Kelvin clips type KC2

MTS2

Calibration standard

RSL01

RS232 cable

CHO1

Concentric handspikes

F O R F U R T H E R I N F O R M AT I O N V I S I T W W W . c r o p i c o . C O m 15

RESISTANCE TESTERS

D07e RUGGED DIGITAL MICROHMMETER FOR LOW RESISTANCE MEASUREMENT

The DO7e is a very rugged yet compact and portable digital

key feature

micro ohmmeter for the measurement of low resistance. Using a

True 4 wire measurement eliminates lead resistance



6 push button ranges 6 milli ohm to 600 ohm



rechargeable sealed lead acid battery with built-in charger,

DO7e

Resolution 1 micro ohm on 6 milli ohm range



the DO7e is capable of measuring with a current of 10 Amps on

Auto ranging



the lowest range. The DO7e has been designed with the latest

10 Amp measuring current on lowest range



0.8'' LED Display daylight viewable



solid state and microprocessor techniques to ensure the very

Input protection up to 415 Volts rms



best in measurement, reliability and features. Automatic range

Forward and reverse current measurement



selection, forward and reverse current measurements with auto

Auto average of forward and reverse measurement



Auto power off



Mains / rechargeable battery operation



Digital calibration pass code protected



average and a remote start socket are all included as well as an energy saving power down mode.

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D07e SPECIFICATIONS Range

Resolution

Typical Current

Accuracy at 20°C ±5°C, 1 Year

Temp Coefficient/°C

600Ω 60Ω

100mΩ

1mA

±(0.25% Rdg +0.05% FS)

40ppm Rdg + 30ppm FS

10mΩ

10mA

±(0.25% Rdg +0.05% FS)

40ppm Rdg + 30ppm FS



1mΩ

100mA

±(0.25% Rdg +0.05% FS)

40ppm Rdg + 30ppm FS

600mΩ

100µΩ

1A

±(0.25% Rdg +0.05% FS)

40ppm Rdg + 30ppm FS

60mΩ

10µΩ

1A

±(0.25% Rdg +0.05% FS)

40ppm Rdg + 30ppm FS

6mΩ

1µΩ

10A

±(0.25% Rdg +0.05% FS)

40ppm Rdg + 250ppm FS

Measurement

Dimensions

4 Terminal Kelvin / Thomson principle eliminates errors due to lead resistance. Open circuit measurement voltage = 2V dc

343mm x 327mm x 152mm (W D H) approx Mass

Display

6kg approx

0.8” LED 6000 count with automatic decimal point and polarity indication

Protection 415 Vrms maximum at input terminals

Ranges 6 push button selected with LED indication

Calibration Digital Pass code protected

Terminals Binding posts accept 6mm bare wires and 4mm banana plugs (4mm safety sockets) Working Temperature

Battery Sealed lead acid battery with built-in charger. Greater than 1000 measurements on lowest (10A range) and 20 hours on other ranges from a fully charged battery

0°C to 40°C rel. humidity 80% max. non-condensing Average Storage Temperature

Automatic average and display of measurement with forward and reverse current

-20 to +50°C Mains Supply 115/230 Volts +10%-10% 47 to 63Hz 20VA Safety EN 61010-1

D07e Options

Code

Item

CB03

Lead bag attaches to lid of DO7e must be ordered with DO7e

D07-RS

Remote start plug

FS01

Remote start foot switch

HS01

Duplex handspikes with 3 metre lead length

HS01-RS

Duplex handspikes with 3 metre lead length with remote start button suitable for DO7 and DO7e

HS02

Duplex handspikes with 3 and 15 metre lead length

HS02-RS

Duplex handspikes with 3 and 15 metre lead length with remote start button

LS03

Lead set with 3 metre leads terminated in large Kelvin clips type KC3

LS04

Lead set with 3 metres and 15 metres lead length terminated in large Kelvin clips type KC3

MTS2

Calibration standard

CHO1

Concentric handspikes

F O R F U R T H E R I N F O R M AT I O N V I S I T W W W . c r o p i c o . C O m 17

RESISTANCE TESTERS

D07010 RUGGED PORTABLE MICRO OHMMETER FOR LOW RESISTANCE MEASUREMENT

The DO7010 is a very rugged and very compact, portable digital

key feature

ohmmeter

True 4 wire measurement eliminates lead resistance errors



Using rechargeable and replaceable NiMh batteries with external

4 ranges 6 milli ohm to 6 ohm



charger the DO7010 is capable of measuring with a current of

Resolution 1 micro ohm on 6 milli ohm range



1 and 10 Amps on all except the highest range. The DO7010 has

Graphics Display with backlight 3 languages



been designed with the latest solid state and microprocessor

1 and 10 Amp measuring current even on the 600 milli ohm range



Forward and reverse current measurement



Auto average of forward and reverse measurement



True zero offset



Built in test resistor for confidence check



measurement leads are applied to the device under test ensuring

Data logging with up to 1000 readings stored with date and time stamp



fast single person operation. A remote hand terminal is also

Hi-Lo limits with audible and visual warning



available which will fully control the DO7010 at a distance of up

Automatic measurement trigger when leads are connected to DUT



to 15 metres. The data logging function also permits test

Small size and light weight