H61.0.34.6C-01
User’s Manual GMH3181-13
page 3 of 12
_______________________________________________________________________________________________________________________
GREISINGER electronic GmbH
Hans-Sachs-Straße 26
Fon: 0049-9402 / 9383-0
http://www.greisinger.de
D-93128 Regenstauf
Fax: 0049-9402 / 9383-33
e-mail: [email protected]
1.2 Operation And Maintenance Advice
•
Battery Operation
If ´bAt´ are shown in the secondary display the battery has been used up and needs to be replaced. The
device will, however, operate correctly for a certain amount of time. If ´bAt´ is shown in the upper display
the voltage is too low to operate the device; the battery has been completely used up.
Note:
The battery has to be taken out, when storing device above 50°C.
We recommend to take out battery if device is not used for a longer period of time!
•
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.
1.3 Connections
Connection for pressure tubes: „+“ = higher pressure, „-“ = lower pressure
Interface: Connection for el. isolated interface adapter (p.r.t. chapter 4)
The mains adapter socket is located at the left side of the device.
1.4 Display
Units:
an arrow points to the
chosen measuring unit
SL:
no function
Tara:
appears if tara-function
is activated
main display:
shows measuring value
secondary display:
shows min-, max- or hold value
Logg:
appears, if logger function is chosen,
flashes when logger is running
1.5 Basic Operation
When switching on
the device and the logger function is not off the time of the integrated clock will shortly
be displayed. If a
zero point adjustment
was carried out the display shows shortly „nuLL Corr“.
After changing the battery
the clock-setting menu is activated automatically (‚CLOC‘). Check the clock and
adjust, if necessary (p.r.t. chapter 2).
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 resp. calling of logger functions (p.r.t. chap. 3)
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. (only when logger = ‚off‘).
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:
If there is no pressure or zero-pressure (absolute) 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 button 3 for approx. 5 seconds (Auto Null will be displayed shortly).
The adjustment is done via the OFFSET-value of the sensor (referring configuration
menu).
Please note: A zero-point adjustment can only be carried out if the difference between
the value on display is less than 500 digits!
To recall the manufacturer’s calibration press button 3 for approx. 15 seconds.
1
2
3
4
5
6
ON
OFF
max
Tara
Store
min
Set
Menu
Quit
