Operation Manual

GMC-I Messtechnik GmbH 13

í Heat or cool the sensor to a known temperature (e.g

0 °C in ice water), and measure the sensor’s resistance

with the Ω

function using the 1 kΩ range for Pt100

sensors, and the 10 kΩ range for Pt1000 sensors.

Cable resistance is equal to the difference between the

setpoint (100 Ω from DIN table) and the measured

value.

10.2 Temperature Measurement with Thermocouple

and Reference Junction

Ð Enter the type of thermocouple to be used (J or K) in the

menu mode: rAtE  SEnSor ↵  ... J  K ↵

The reference temperature can either be measured via the

internal reference junction, or can be compensated for

externally, for example through the use of ice water.

Select sensor type and internal reference temperature:

rAtE  SEnSor ↵  ... IntErn ↵

Select sensor type and internal reference temperature in °C:

rAtE  SEnSor ↵  ... E-tErn ↵

Ð Set the selector switch to “°C

”.

Ð Connect the sensor as shown in the following diagram:

The instrument displays the measured temperature in the unit

of measure which has been entered in the menu mode (param-

eter: “tEMP”).

Note!

The internal reference temperature (from the internal

reference junction) is measured with a temperature

sensor in close proximity to the input jacks. This

temperature is somewhat higher than room temper-

ature due to internal warming. The magnitude of this

deviation has no effect on measuring accuracy.

–

External Reference Junction: 0°C

–

Internal Reference Junction

°C

–

Thermocouple

Equalizing Conductor

Thermocouple