User Manual

GMC-I Messtechnik GmbH 39
V/Hz/dB – , Temperature, and A/Hz Measurements
5.5 Temperature Measurement
Temperature measurement is performed with a type K thermocouple or a
type Pt100 or Pt1000 resistance sensor (accessory, not included) which
is connected to the voltage input.
Selecting the Unit of Measure for Temperature (°C = default value)
1nFo
 ...  set t iME  ...  tempunit
unit set: °C / °F

5.5.1 Measurement with Thermocouples, Temp TC
Ð Set the rotary switch to “Temp
TC
”.
Note

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.
Ð Either the internal reference junction (“1tEMPintern” parameter,
see also page 52) or an external reference temperature can be
specified as the reference temperature (see page 52). The type
(“I.” for internal or “E.” for external) and temperature of the se-
lected reference junction appears at the right-hand auxiliary
display during measurement.
Note

The internal reference temperature (temperature of the inter-
nal reference junction) is measured by a temperature sensor
inside of the instrument. This may deviate somewhat from
room temperature as a result of internal heat-up, or moving
from warmer to colder surroundings or vice versa.
Ð Connect the sensor to the two accessible jacks. The instru-
ment displays the measured temperature using the selected
unit of measure.
Note

After previously performing a 10 A current measurement, the
measuring instrument should be allowed to cool down for
30 minutes before performing measurements with thermo-
couples, in order to assure that the specified accuracy levels
are achieved.
MEASURE
SETUP
FUNC
ENTER
FUNC
ENTER
FUNC
ENTER
Temp
TC
0023 . 3
°C
Temp
RTD
TC
TC
0256.0
°C
Pt1000
RTD
Measuring Range
TC K (NiCr-Ni) –270.0  +1372.0 C
FUNC
ENTER
1 . 22 . 4
COM
V
Tem p

TC