RESISTOMAT
®
Model 2302-V001
Page 52
Introduction &
applications
Description of functions
Brief guide
Operation
Calibration
Test and offset
instructions
RS232 data
output
Accessories and Circuit diagram
Clamping Device Model 2381
With the help of the clamping device model 2381 and a milliohm or
microohmmeter of the RESISTOMAT
®
series, the ohmic
resistances of test cables and samples of materials in the shape of
cords or strips can be measured. Fields of application include
production monitoring, quality assurance and general test
measurements.
Themodel 2381 consists of a robust, warp-resistant, light-metal rail
with one movable and one rig clamping device. It allows the
measurement of samples 50 mm to 1000 mm long. The clamping
device is designed to accomodate cable cross-sections of 0.1 mm
2
to approx. 100 mm
2
. For larger cross-sections, the distances
between the current feed and the potential tap must be increased
in order to ensure a uniform current distribution.
Adaptation to the diameter of the test unit is carried out through a
coarse adjustment of the clamping jaws. The quick-action clamping
device allows the test unit to be clamped rapidly and securely in one
single movement.
Optional Features
The clamping device can always be supplemented with the guide
rail model 2388 shown in the illustration. This rail offers major
advantages. It serves as a support and guide for the test units. In
addition, it offers protection against draughts, thus preventing rapid
changes in the temperature of the measurement object. These
advantages are particularly noticeable in the case of small cross-
sections which, due to their low heat capacity, react to the slightest
draught. Although thin test units sag minimally even without a guide
rail, the increase in length due to this sag is often sufficiently large
to cause errors in the measurement results.
A sensor block is integrated into the guide rail. With the help of the
temperature sensors model 2392 resp. 2391, the temperature of
the guide rail resp. the sample material can be recorded and
compensated appropriately by the measurement device.
Technical Data
Adjustable clamp support:
measurement length of up to 1000 mm
Test unit cross-sections:
ranging from 0.1 mm
2
to approx. 100 mm
2
Current connections:
designed for 100 A
Potential tap:
routed to 4 mm standard device terminals via material with low
thermoelectric power.
Dimensions (height x width x depth):
1300 x 120 x 150 [mm]
Weight:
approx. 8.5 kg
Order Information
Clamping device
model 2381
Guide rail
model 2388
1 set interchangeable contacts
for the potential tap
model 2390
Connection cable for
RESISTOMAT
®
model 2304/05
model 2381-K003
2318/2319, 2302
Connection cable for
RESISTOMAT
®
model 2329
model 2381-K006
Technical Data
Measurement length:
1000 mm
Clamping device: designed for cross-sections of 1 ... 1000 mm
2
Distance between voltage and current-clamp:
420 mm
Dimensions (height x width x depth): approx.170x2100x250 [mm]
Weight:
approx. 25 kg
Order Information
Clamping device
model 2381-V001
Clamping Device Model 2382 L
The clamping device model 2382 L can be used to check the
electrical conductivity resp. resistance of wires, rails cables or
sector conductors for power cables during production and in the
testing laboratory. The measurement length is 1000 mm. The
clamping device is designed for cross-sections of 1 ... 1000 mm
2
.
Detailed investigations and long experience have shown that
particulary in the case of large cross-sections, precise
temperature measurement is only possible in a liquid medium.
The model 2382 L is equipped with a water bath whose
temperature is controlled with an integrated thermostat.
The integrated circulation pump ensures a uniform distribution of
temperature in the water bath. The test unit´s measurement length
of 1000 mm is immersed entirely in a liquid medium (water). The
digital ohmmeters of the RESISTOMAT
®
series correct the
measurement value display automat to the VDE value at 20
°
C.
A uniform distribution of current has been ensured by fitting the
quick action vices outside the bath.
The clamp support is laterally adjustable by means of a spindle so
that the immersed test unit can be stretched. This is particularly
advantageous in the case of large cross-sections.
Technical Data
Measurement length:
1000 mm
in a temperature-controlled water bath
Clamping device: designed for cross-sections of 1 ... 1000 mm
2
Constant water temperature ensured by a two-position
controller and an integrated circulation pump. Precise
temperature measurement with an integrated sensor.
Operating range:
25
°
C ... 60
°
C, tolerance
±
0,5
°
C
The distance between the potential tap and the current feed
can be adjusted between 400 and 800 mm in accordance with
the cross-section. This ensures an adequate current
distribution even in the case of large cross-sections.
Current connections:
designed for 100 A
Output of the integrated heating filaments:
2 kW
Voltage supply:
230 V, + 6 % -10%
Mains frequency:
50/60 Hz
Power consumption:
approx. 2,2 kVA
Device protection:
in accordance with VDE 0411
Weight (without water):
approx. 80 kg
Dimensions (height x width x depth):
0,3 x 2,10 x 0,75 [m]
without wire holder
0,3 x 1,33 x 0,5 [m]
Order Information
Clamping device
type 2382 L
Accessories and Circuit diagram
