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•CalibrationandSetup
General
The SET (setpoint) and DB (deadband) adjustments control the
setpoint and hysteresis for each alarm channel. Internal jumpers
control the alarm type and relay coil energisation.
The unit should be at normal operating temperature during calibration
for the best results.
Equipmentrequirements
• A suitable AC Voltage source
• An accurate digital multimeter (accurate to 0.0 mV and ±0.1 μA)
• Flat bladed screwdriver (blade width less than .4 mm / 0.1 inch)
Terminalconnectionsforcalibration
Signaltype
Terminal
Input signal
AC Voltage Source
2
AC Voltage Source
4
Power supply
Neutral (−)
9
Live (+)
10
Note: set the multimeter to measure the AC Voltage.
Setpoint(SETControl)adjustment
The SET controls for each channel are on the front panel of the
transmitter. For both high and low type alarms you turn the control
clockwise to trip the alarm and anticlockwise to reset it. The procedure
for adjustment is as follows:
1. Connect up the instrument according to the table above.
. Set the input source to the trip point.
3. Turn the SET control anti-clockwise until the LED extinguishes.
4. Slowly turn the SET control clockwise until the LED lights up.
