Watlow PM PLUS 6 User Manual

Watlow PM PLUS™ 6 • 82 • Chapter 8: Features
Record the low value ______________
1. Set the Precision Source to the High value on your external calibrator. Read Electrical Measurement value
of controller at
Operations — Factory — Calibration — Electrical Measurement. This will be referred to as
Electrical Measured High. Record high value ______________.
2. Calculate the Electrical Input Slope = (Precision High – Precision Low) / (Electrical Measured High - Electri-
cal Measured Low)
Calculated Slope value ___________
3. Calculate the Electrical Input Offset = Precision Low - (Electrical Input Slope * Measured Low)
Calculated Offset value ___________
4. Enter the calculated Electrical Input Slope and Electrical Input Offset into the controller Operations — Fac-
tory — Calibration — Electrical Input Offset,
then Operations — Factory — Calibration — Electrical Input
Slope.
5. Press the Home Icon to exit.
6. Validate the calibration process using a calibrator to the analog input.
7. Enter calibration offset as recorded in step 2 if required to compensate for sensor error.
Setting Electrical Input Slope to 1.000 and Electrical Input Offset to 0.000 restores factory calibration.
Filter Time Constant
Filtering smooths an input signal by applying a first-order filter time constant to the signal. Filtering the dis-
played value makes it easier to monitor. Filtering the signal may improve the performance of PID control in a
noisy or very dynamic system.
Filtered Input Signal
Time
Temperature
Adjust the lter time interval
Unfiltered Input Signal
Time
Temperature

Watlow PM PLUS 6 Specifications

General

Brand	Watlow
Model	PM PLUS 6
Category	Controller
Language	English