Sterling M2B+, Manual

Page: 43 / 65

M2B+ Controller
5-15 Calibrating the T/C, RTD, and V Inputs
This calibration procedure describes the operator procedures for calibrating the Controller
Sensor Input (T/C and RTD) and the Analog input (V).
Use the following procedure to calibrate all three sensor inputs:
1.
While the controller is powering on, hold the Index button and the Enter button when
the “Selftest in Progress” message is displayed. This will put the controller into
Factory mode.
2.
Press the Index button two times so that the display reads “Calibrate?<ENT=YES>”.
3.
Press the Enter button to begin calibration.
4.
Use the Index button to cycle through the six calibration parameter menu selections:
LOCalJTC(25C) = nn.n
HICalJTC(345C) = nn.n
LOCalR1K(10R) = nn.n
HICalR1K(2K1) = nn.n
LOCalRSp(0.1V) = nn.n
HICalRSp(9.9V) = nn.n
5.
Use the Up and Down buttons to select the calibration value for each parameter.
6.
Press the Enter button to save the value.
Calibrating the Thermocouple Input (T/C)
Note: This thermocouple calibration procedure requires a “J” T/C reference
source to calibrate this analog input circuit. Once the circuit is calibrated,
either a Type “J” or a Type “K” thermocouple can be selected for
operation.
1.
Put a jumper on pins 2 and 3 of JMP2 on the main PC board to select the T/C input
type.
2.
Connect the “J” thermocouple calibration source to pins 3 (+) and 4 (-) on the J5
connector on the main PC board.
3.
Select the “LOCalJTC(25C)” parameter.
4.
Set the “J” thermocouple low calibration source to 25ºC. Use the Up and Down
buttons to change the value on the display to 25.0.
5.
Press the Enter button to save the value.
6.
Select the “HICalJTC(345C)” parameter.
7.
Set the “J” thermocouple high calibration source to 345ºC. Use the Up and Down
buttons to change the value on the display to 345.0.
8.
Press the Enter button to save the value.
9.
Cycle between the Low and High parameters and readjust the values if needed to
compensate for any interaction that may occur between the two parameters.
Chapter 5: Advanced Operation 43 of 65