Edwards PGC202, Instruction Manual

Page: 42 / 64

D0300041001EN - Parameters
Page 32
type of gas in each case. The characteristic may be selected for a gauge head between
nitrogen (

) or argon (

).
For this proceed as follows:

Select the parameter


.

Press the pushbutton (PARA).

The setup characteristic is displayed.

Use the arrow pushbuttons to change the characteristic.

The value of the parameter is changed.
Type of gas correction IG (


)
The IG gauge heads are normally calibrated for measurements in nitrogen or air. With the aid
of the parameter


the operator can set up the measurement channel to other types of
gas.

For this proceed as follows:

Select the parameter


.

Press the pushbutton (PARA).

The setup characteristic is displayed.

Use the arrow pushbuttons to change the characteristic.

The value of the parameter is changed.
The correction factor for a gauge head can be set up in the range of 0.2 - 1.0 - 8.0. A setting
of 1.0 returns the uncorrected value.
Sensor switch-on type (

)
This parameter defines how the IG gauge head is switched on.
The switch-on time can be set to the following values:

Manual. The gauge head can be switched on by pressing the pushbutton (UP)
(see
Switching on ).

Externally through optocoupler (PLC compatible high-level > 13 V d.c.; 7 mA at
24 V d.c.).

Warm start. The sensor is switched on automatically upon switching on the
instrument. After a power failure the measurement is started automatically.

Through measurement channel PRG 1. With the aid of the next parameter t-on
the operator can define a switch-on value. When the pressure in the
measurement channel PRG 1 drops below the switch-on value, the sensor is
switched on.

Through measurement channel PRG 2. With the aid of the next parameter

the operator can define a switch-on value. When the pressure in the
measurement channel PRG 2 drops below the switch-on value, the sensor is
switched on.