38
GMC-I Messtechnik GmbH
V/Hz,
, Temperature,
and A/Hz Measurements
5.5
Temperature Measurement
Temperature measurement is performed with a type K
thermocouple (accessory), which is connected to the voltage in-
put. Alternatively, a Pt100 or Pt1000 resistance
sensor can be used with the
METRAHIT E
XTRA
and
METRAHIT E
TECH
.
Selecting the Unit of Measure for Temperature
1nFo
...
tEMP
°C
/ °F
(
°C
= default setting)
5.5.1 Measurement with Thermocouples, Temp TC
Ð
Set the rotary switch to “Temp
TC
”.
Note
METRAHIT E
XTRA
and
METRAHIT E
TECH
only:
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 if required.
Ð
The reference temperature is measured at the internal
reference junction (see parameter “
1tEMP
” in chapter 6.3
regarding querying).
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 from room tem-
perature 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.
MEASURE
SETUP
FUNC
ENTER
FUNC
ENTER
Temp
TC
0023
.
3
Temp
RTD
Type K
TC
COM
V
Temp
TC
0256
.
0
Pt1000
RTD
Measuring Range
TC
K (NiCr-
Ni)
–250.0
+1372.0
C
FUNC
ENTER
