Readjustment - thyracont VSM77D Betriebsanleitung

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Setting T[p1] = F[p2] ist not allowed! A gap between the thresholds
being too small may result in flickering of the relay and can even
cause damage to the relay!
Setting E: Relay closes in case of a device error.
Setting !E: Relay opens in case of a device error.
Setting U: Relay closes in case of pressure underrange.
Setting !U: Relay opens in case of pressure underrange.
Setting C: Relay closes when cathode is switched on.
Setting !C: Relay opens when cathode is switched on.
Setting T0: Open relay by software command (off).
Setting T1: Close relay by software command (on).
The control LEDs on top of the transducer will be on as soon as
the related relay is closed.

5.7 Readjustment

The transducer is adjusted ex works with 24 V voltage supply in upright position,
flange to the bottom.
Other orientation, operation under different climatic conditions, extreme tempera-
ture changes, ageing or contamination can result in the need for readjustment of
the Pirani sensor.
Adjust High (AH)
Adjustment of the Pirani sensor at atmosphere pressure.
Adjust Low (AL)
Adjustment of the Pirani sensor at zero pressure. For this purpose actual pressure
must be less than 5.0x10
To achieve optimum results of the adjustment we recommend to
consider a warm-up of at least 10 minutes at the appropriate cali-
bration pressure before any adjustment.
VSM-RS485-200116
-5
mbar.