H31.0.11.6C-11
User’s Manual GMH3110
page 3
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main display:
shows measuring value.
!
: indicates weak battery or other warnings
secondary display:
min-, max- or hold value
Logg:
no function
AL:
no function
Units:
an arrow points to
the chosen measuring unit
Tara:
appears if tara-
function is activated.
SL:
appears if sea-level-
correction is activated
•
Mains Operation With Power Supply
Warning:
When using a power supply please note that operating voltage has to be 10.5 to 12 V DC.
Do not apply overvoltage!! Cheap 12V-power supplies often have excessive no-load voltage.
We, therefore, recommend using regulated voltage power supplies. Trouble-free operation is guaranteed
by our power supply GNG10/3000.
Prior to connecting the power supply to the mains make sure that the operating voltage stated at the
power supply is identical to the mains voltage.
!
Connecting/Changing Sensors
Do not use insuitable sensors. Connecting other devices/sensors as specificated may cause a damage to
the instrument and device/sensor! Switch off device before changing the sensor.
Connect sensor before switching on the device, otherwise the sensor may not be detected correctly.
When connecting the sensor the connector may not lock correctly. In such case take the plug not at the
casing but at the buckling protection at the end of the plug. If plug is entered correctly, it will slide in
smoothly. To disconnect sensor do not pull at the cable but at the plug (to open locking mechanism).
1.3 Connections
Connection for pressure sensors of the GMSD-family (p.r.t. chapter 9)
Interface: Connection for el. isolated interface adapter (p.r.t. chapter 6)
The mains adapter socket is located at the left side of the device.
1.4 Display
1.5 Basic Operation
When switching on the device and a zero point adjustment was carried out it shows shortly „nuLL Corr“.
On-/Off-Switch
Tara:
Calling of tara function, zero point adjustment
min/max:
Showing the min- resp. max-memory in sec. display
Store/Quit:
Calling of hold function
Set/Menu:
Calling of configuration
Max Memory:
Pressing ´max´ (key 2) shows the maximum of the measured values. Pressing it again
hides it. To clear the max memory press key ´max´ for >2 seconds.
Min Memory:
Pressing ´min´ (key 5) shows the minimum of the measured values. Pressing it again
hides it. To clear the min memory press key ´min´ for >2 seconds.
Hold Function:
By pressing ´Store/Quit´ (key 6) the last measuring value will be held in the secondary
display. Pressing it again hides it.
Tare Function:
By pressing ´Tara´ (key 3) the display will be set to 0. All measurings from then on will be
displayed relatively to the set tare value. When tara function is activated, the arrow "Tara"
appears in the display. To deactivate tare function press ´Tara´ for >2 seconds.
Please Note: Activating/deactivating tara clears the max- & min-memories.
Zero-Point Adjustment:
(for rel. pressure sensors only) If there is no pressure applied to the pressure ports
the device will display 0. If there is a permanent deviation (and device is operated under
steady conditions), a permanent zero point adjustment can be carried out.
To carry out the adjustment press key 3 for 5 seconds.
(Please note: A zero-point adjustment can only be carried out if the difference between the
value on display and the value calibrated on site is less than 2%! E.g. for the measuring
range of –1.00 ..+25.00mbar, =>zero-point adjustment up to 0.50mbar possible)
To recall the manufacturer`s calibration press button 3 for approx. 7 seconds.
Note: If a zero-point adjustment was carried out, this will be signalled by the short
displaying of „NuLL Corr“ when switching on the device.
1
2
3
4
5
6
ON
OFF
max
Tara
Store
min
Set
Menu
Quit
