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
6Ω
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
1Ω
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
4Ω
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
1Ω
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
4Ω
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
4Ω
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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L E A D E R
I N
p r e c i s i o n
i n s t r u m e n t s
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.
WO R L D 14
L E A D E R
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p r e c i s i o n
i n s t r u m e n t s
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
6Ω
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.
WO R L D 16
L E A D E R
I N
p r e c i s i o n
i n s t r u m e n t s
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
6Ω
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