User manual

H61.0.3X.6C-01 User’s Manual GMH 3181-… page 14 of 16
11 Pressure Connection
2 (or 1) universal pressure connector for 6 x 1 mm (4 mm tube inner diameter) or 8 x 1 mm (6 mm tube inner
diameter ) plastic tubes.
11.1 Device type with absolute pressure (GMH 3181-12)
Connect plastic tube to pressure port.
11.2 Device type with relative pressure
For measurements of overpressure (refer to summary):
Connect plastic tube to pressure port "+".
Port "-" will not be used!
For measurements of underpressure (refer to summary):
Plug the tube to pressure port "-". The measuring range covers then up to max. overpressure range
Note: All values are displayed now as positive values. No minus sign will be shown.
Example: it is possible to measure under pressure down to -25.00 mbar, the display shows then
the value 25.00 (no minus sign).
 For measurements of pressure differences:
Connect both plastic tubes to pressure port "+" and "-"; make sure to apply higher pressure to port "+".
Measure ranges:
device type
over- or under pressure
under pressure
GMH 3181-002
- 500.0 … 500.0 Pa
---
GMH 3181-01
- 1.00 … 25.00 mbar
- 25.00 … 0.00 mbar
GMH 3181-07
- 10.0 … 350.0 mbar
- 350.0 … 0.0 mbar
GMH 3181-07B
- 10.0 … 420.0 mbar
- 420.0 … 0.0 mbar
GMH 3181-07H
- 1.00 … 70.00 mbar
- 70.00 … 0.00 mbar
GMH 3181-13
- 100 … 2000 mbar
- 2000 … 0 mbar
with option: MB -1..2 BAR
- 1000 … 2000 mbar
12 Error And System Messages
Display
Meaning
What to do?
Low battery power, device will only continue
operation for a short period of time
Replace battery
Battery empty
Replace battery
Mains operation without battery: wrong voltage
Check power supply, replace it when
necessary
No display or
confused
characters,
device does
not react on
keypress
Battery empty
Replace battery
Mains operation without battery: wrong voltage
or polarity
Check power supply, replace it when
necessary
System error
Disconnect battery and power supplies,
wait shortly, then reconnect
Device defective
Return to manufacturer for repair
Err.1
Measured value above allowable range
Check: pressure above max. range?
-> measuring value to high
Sensor defective
Return to manufacturer for repair
Err.2
Measured value below allowable range
Check: pressure below min range?
-> measuring value to low
Sensor defective
Return to manufacturer for repair
Err.4
Value is too low to be displayed, tara is set
Check: display below -2000 (tara?)?
Err.9
Measured value far out of allowable range
Check: pressure not within sensor range?
Err.7
System error
Return to manufacturer for repair