Trigger relays reaction time
30 ms approx.
for a pressure change exceeding
1 measurement decade
Trigger relays thresholds
2 per measurement channel; changeover contact
Modes
level / interval
Ready indicator electrically
1 per measurement channel
floating n.o. contact
1 contact closed in ready mode
Error display FAIL
optically, 1 per meas. channel
1.2.3 PM measurement channel
Measurement range
1·10
-9
mbar/Torr to 1·10
-2
mbar/Torr
Measurement uncertainty in the range
1·10
-8
mbar/Torr to 1·10
-4
mbar/Torr
± 30 % of the meas. value
Sensors
PR 25; DN 25 KF
PR 35; DN 40 KF
PR 36; DN 40 CF
PR 31 and 32 (limited measurement range)
Length of gauge head cable
up to 100 m for the
pressure range 1·10
-8
to 1·10
-2
mbar / Torr
Trigger relays reaction time
40 ms approx.
for a pressure change exceeding
1 measurement decade
Triggers thresholds
2; changeover contact
Modes
single / interval
Ready indicator
electrically floating n.o. contact
1 contact closed in ready mode
Error display FAIL
optically
1.2.4 Relay outputs
Two variable thresholds per channel with one relay
changeover contact each and one ready indicating cir-
cuit with n.o. contact.
Max. switching voltage
250 V AC / 60 V DC
Max. switching capacity
5 A (AC, resistive load)
0.7 A (DC)
Contact life
60,000 cycles
Setting range of the variable thresholds
PM channel
1·10
-8
to 1·10
-2
mbar
TM channel
5·10
-3
to 500 mbar
3.7·10
-3
to 370 Torr
Note
The relay outputs also have been designed to handle
signals for programmable controls.
1.2.5 Chart recorder outputs
Each measurement channel has its own chart recorder
output.
Voltage range
0 to 10 V (nominal)
(Limits - 0.6 V to + 10.6 V)
Load resistance
R
ext
≥
2.5 k
Ω
Output voltage in the
event of a fault
10.2 V to 10.6 V
Characteristic
linear / logatithmic
PENNING
log.
1.43 V / decade
(0 V
;
1·10
-9
mbar)
linear:
0 - 10 V
;
0 - 1·10
-7
mbar
0 - 10 V
;
0 - 1·10
-6
mbar
0 - 10 V
;
0 - 1·10
-5
mbar
:
:
0 - 10 V
;
0 - 1·10
-2
mbar
THERMOVAC
log.
1.67 V / decade; (0 V
;
1·10
-3
mbar)
0-10 V
;
5·10
-4
- 1000 mbar (1,587 V / decade)
linear:
0 - 10 V
;
0 - 1·10
-2
mbar
0 - 10 V
;
0 - 1·10
-1
mbar
0 - 10 V
;
0 - 1·10
0
mbar
:
:
0 - 10 V
;
0 - 1000 mbar
Reaction time
100 ms approx.
Resolution
2.5 mV (12 bit)
Deviation of the displayed value
± 2 %
1.2.6 AC power requirements
Line voltage (selectable)
100 V, 120 V
200 V, 230 V
+10 % / -15 %
Line frequency
50 to 60 Hz
Power consumption
35 VA
1.2.7 High voltage control input
(only for PENNINGVAC)
Input voltage
0 to 24 V DC
Max. input voltage range
- 33 V to + 33 V
5
Summary of Contents for 157 89
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