20
Using the IPM-400 as a Source
(cont’d)
Calibrate RTD Inputs
Display:
RTD Type: Pt, Ni, Cu,
°
F,
°
C
This function simulates a temperature signal into any instrument requiring an RTD input.
1.
Turn the Selector knob to
RTD
.
2.
Connect the black and red leads to the meter as shown.
3.
Repeatedly press the
DISPLAY/SOURCE/READ
button until “SOURCE” appears on the
display. If the incorrect RTD type is displayed, follow the procedure below.
4.
Disconnect the sensing RTD from the instrument being calibrated.
5.
Connect the meter using two or three wires as shown in the illustrations.
6.
With the toggle switch at
SET
, adjust the output to the desired value.
7.
Flip the toggle switch to
HI
or
LO
to use the stored values. See the Storing Output Values
section to change the stored values.
Note: Spade lugs are recommended to minimize any contact resistance.
To change the RTD type:
1.
Press the
TYPE/ENG UNITS
button. The “SELECT RTD TYPE” menu appears.
2.
Turn the digital pot to change the type.
3.
Press the
STORE/RESET
button or wait 5 seconds to store the selection and to return to
normal operation.
Receiver Input
Ohms or 2-Wire RTD
Controller
Transmitter
Computer
Two-Wire RTD Connection
