Manual

42 Gossen Metrawatt GmbH
8.9 Temperature Measurement with Resistance Thermome-
ters – Temp RTD
Temperature measurement is performed with a Pt100 or Pt1000
resistance thermometer (accessory, not included), which is con-
nected to the voltage input.
➭ Set the rotary switch to “” or “Temp”.
➭ Repeatedly press the Func softkey until the Temp RTD measur-
ing function is displayed.
➭ Select the connected temperature sensor (see settings menu
below).
➭ Ascertain offset resistance by pressing the R Leads softkey or,
if the value is known, enter it to the “Setup for present mea-
surement” submenu (see below). The currently selected value
for R Leads appears above the measurement display.
➭ Connect the sensor to the sockets with the measurement ca-
bles as shown.
➭ Measurement is started immediately. The instrument displays
the measured temperature using the selected unit of measure.
Temperature Sensor Selection
> Setup for present measurement
(Temp
RTD
Setup)
  Temperature Sensor PT100 / PT1000

Selecting the Unit of Measure for Temperature
> Setup for present measurement
(Temp
RTD
Setup)
  Temperature U/M °C / °F 
(°C = default setting)
Entering R Leads Offset Resistance
> Setup for present measurement
(Temp
RTD
Setup)
  R Leads 00.xx  
➭ Enter the known resistance of the connector cables with the
scroll keys:
Select the digit to be changed with the
 keys, and change
the respectively selected digit with the
keys. The default
value is 0.43 . Values can be selected within a range of 0 to
50 .
Ascertaining Cable Resistance – R Leads
➭ Press the RLeads softkey. The “Short circuit cable!” message
appears.
➭ Short circuit the connected measurement cables.
➭ Store the measured offset resistance value by pressing the
Save softkey. The ascertained value for R Leads appears
above the measurement display. Automatic compensation of
cable resistance is activated for all subsequent measurements.
Cable resistance remains in memory even after the instrument
has been switched off.
MENU
OK
OK
MENU
OK
OK
MENU
OK
OK
S– A
V
Temp
m/4
COIL
S+

Temp
Measuring Ranges
RTD
Pt 100 –200.0  +850.0 C
RTD
Pt 1000 –150.0  +850.0 C
RTD
Func
Func
Func
Func

F
Temp RTD
TEMP TC
RLeads