Edwards APG200

Note:
For the gauge models with a single open c
ollector transistor setpoint output, “Setpoint
2” funcon is omied when the LED indicator cycles through the available funcons.
1. When the setpoint adjustment funcon is selected (LED indicator permanently
illuminates purple or blue), press momentarily to conrm the selecon and release
the mul-funcon push-buon.
▪ The pressure measurement output signal will change to indicate the setpoint
threshold.
▪ The LED indicator will blink to indicate the commencement of setpoint
adjustment.
Note:
If the mul-funcon buon is not released within 5 seconds, the gauge will
skip t
o the next step in the process.
2. To adjust the threshold, press and hold the buon.
▪ The setpoint threshold will increase steadily. Release the buon when the
desired threshold is reached
▪ To make ner adjustments, release the buon before the desired threshold is
reached and then make small adjustments by pressing the buon several
mes. The output will step up in increments of approximately 10 mV.
▪ When the setpoint threshold reaches the upper limit of the adjustment range
(re
fer to Setpoint on page 15) the setpoint will step to the lower limit of the
range and starts increasing again
▪ The LED indicator will blink to signify the end of the adjustment process and
return to normal operaon aer the buon has been released for 5 seconds.
3. When the measured pressure is less than the setpoint pressure the relay closes
(low impedance) or the transistor output changes to ON.
4. When the pressure rises above the setpoint threshold by the hysteresis value, the
relay opens (high impedance) or the transistor output changes to OFF. Hysteresis
values depend on the model of the gauge. Refer to Setpoint on page 15 for
hysteresis values.
5. For gauge with a log linear voltage output, the setpoint can be adjusted to values
outside the rang
e of the pressure measurement output signal.
▪ If the setpoint is set to a value lower than the range of the pressure
measurement output signal, the setpoint will remain permanently o.
▪ If the setpoint is set to a value greater than the range of the pressure
measurement output signal, the setpoint will be permanently on as long as
the gauge is operang normally.
Note:
- By ensuring the se
tpoint is set to permanently ON, the setpoint can be used
to indicate that the gauge is operang correctly.
- For the gauge models with a non-linear voltage output, the setpoint cannot
be switched permanently on or permanently o.
07/2021 - ©Edwards Limited
Page 33D1G0000880_A
D1G0000880_A - Operaon