User Manual
40 GMC-I Messtechnik GmbH
V/Hz, , Temperature, and A/Hz Measurements
5.5.2 Measurement with Resistance Sensors
Ð Set the rotary switch to “Temp
TC
” or “Temp
RTD
”.
The last selected temperature measurement or the last selected
temperature sensor, i.e. type K or Pt100/Pt1000, remains in
memory and is accordingly displayed. Press the FUNC | ENTER key
in order to change to the other measuring function.
The sensor type, i.e. Pt100 or Pt1000, is detected automatically
and displayed.
There are two different ways to compensate for cable resistance:
Automatic Compensation
Ð Acknowledge by pressing the ZERO | ESC key.
“Short leads” appears at the display.
If you prefer to enter cable resistance directly, you can skip the
following entry prompt.
Ð Short circuit the measuring instrument’s connector cables.
“000.00” appears at the display. After pressing the FUNC | ENTER
key, automatic compensation of cable resistance is activated
for all subsequent measurements. The short-circuit can now
be eliminated, and the device is ready for use.
Entering Cable Resistance
Ð Press the ZERO | ESC key once again in the automatic compen-
sation menu.
Ð Enter the known resistance of the connector cables with the
scroll keys:
Select the digit to be changes with the
keys, and change
the respectively selected digit with the
keys. The default
value is 0.43 (Z3409). Values can be selected within a range
of 0 to 50 .
Ð
Upon pressing the
FUNC | ENTER
key, the selected value is acti-
vated and the display is returned to the measuring function.
Cable resistance remains in memory even after the instrument
has been switched off.
COM
V
Temp
Temp
TC
Temp
RTD
TC
RTD
00
.
00
short
leads
Entering Cable Resistance
Automatic
RTD
Compensation
Measuring Ranges
RTD Pt 100 –200,0 +850,0 C
RTD Pt 1000 –150,0 +850,0 C
FUNC
ENTER
FUNC
ENTER
ZERO
ESC
ZERO
ESC
FUNC
ENTER
00
.
50
0023. .3
°C
TC
1
.
22.4
0256
.
0
°C
Pt1000
rleadsmeas
rleadsset