Automatic Offset Setting - S+S Regeltechnik PREMASGARD 711 VA Série Notice D'instruction

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PREMASGARD

Automatic offset setting:

SET-Setting Cycle time
(autom. zero point calibration)
ON DIP
1 2 3 4 5 6
Plug for
display
1. For zero point setting, the device must be in operation for
at least 60 minutes.
2. Connect pressure inputs P (+) and P (–) with a hose.
(Pressure difference between the inputs = 0 Pa).
3. For zero point setting, press pushbutton uninterrupted for 10 seconds.
By pressing the pushbutton, a countdown of ca. 10 seconds is started.
The yellow LED is blinking and the countdown is shown on the display
(optional).
Zero point calibration takes place after the countdown period.
This is indicated by continuous LED light and at the display (optional) by
switching from "AUTO 0" to "PROG 0".
Note: By releasing the pushbutton during the countdown
(counter > 0), zero point setting is immediately cancelled!
DIP switches for
pressure range setting, output attenuation and zero compensation:
Pressure range
(selectable) – max. measuring range (default) is depending to the type of device
0...25 Pa 0...50 Pa 0...100 Pa
– – 0...300 Pa
– – 0...500 Pa
0...25 Pa 0...100 Pa 0...1000 Pa 0...5000 Pa –25...+25 Pa –100...+100 Pa
Measuring range mode
(Mode selectable)
Unidirectional ( 0 ...+MR ) (default)
Bidirectional (–MR ...+MR )
711x - VA
Pushbutton
Zero point setting
SET AUTO
ZERO
Offset correction
ca. ±10 % of final value
OFFSET
min. max.
1
2
3
0...1000 Pa –25...+25 Pa
0...2000 Pa
0...3000 Pa
DIP Measurement signal filtering
3 (Time interval selectable)
OFF 10 s (default)
O N 1 s
Manual offset adjustment:
The offset potentiometer functions additionally and
independently for automatically setting the zero point.
With the OFFSET potentiometer, a deviation outside of the zero
point can be aligned.
The range for adjustment is ca. ± 10 % of the pressure range.
Automatic zero point calibration (optional):
A zero point calibration is carried out cyclically via an internal
valve.
The cycle time can be set between 15 minutes and 24 hours
using the „SET" potentiometer.
During the automatic calibration, the output value remains at
its last pressure value.
Display readout:
The 1st line in the display shows the actual pressure.
In the 2nd line, the unit pascal (Pa) is shown.
–50...+50 Pa –100...+100 Pa
– – –300...+300 Pa
– – –500...+500 Pa
–1000...+1000 Pa
14
Standard
Actual pressure (in Pa)
Calibration interval (arrows)
Zero point calibration active
remaining calibration time
(in seconds)
Adjustment of
zero point calibration
Cycle time (15 min to 24 hours)
adjustable by potentiometer
–1000...+1000 Pa
–2000...+2000 Pa
–3000...+3000 Pa
–5000...+5000 Pa
DIP
5
OFF
O N
DIP DIP
1 2
OFF OFF
O N OFF
OFF O N
O N O N