User manual

H82.0.02.6C-05 Operating Manual GMH 5150 page 17 of 22
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9.2 Analog output
An analog voltage 0-1V can be tapped at the universal output connector 
The analog output can be easily scaled with DAC.0 and DAC.1.
Please take care not to load the analog output too heavily, otherwise the output value will be distorted and
the power consumption will rise. Loads up to approx. 100 kOhm are unproblematic.
If the displayed value goes beyond DAC.1 the output voltage will be 1V.
If the displayed value falls below DAC.0 the output voltage will be 0V.
In error case (Err.1, Err.2, ----, etc.) the output voltage will be slightly higher than 1V.
The interface converter USB 5100 has a screw/plug connection; therefore no further cable is necessary if
USB 5100 is used.
10 Input Adjustment
The zero point and slope of each measuring inputs 

A reasonable adjustment presumes reliable references (e.g. ice water, controlled precision water bath, etc.).
If the inputs are adjusted (i.e. offset and scale are different from default settings) the device will shortly

Default setting 
Zero point correction:
Displayed value = measured value – OFFS
Zero point and slope correction:
Displayed value = (measured value – OFFS) * (1 + SCAL / 100 )
11 Pressure Connection to the Sensors
The device is designed to be connected to the sensors of the GMSD/GMXD...-series without a new
calibration being necessary. Therefore a great variety of replaceable sensors of e.g. -1.999 ... 2.500 mbar
relative up to 0 ... 1000 bar absolute pressure can be connected to the device.
Relative pressure sensors (types: GMSD ... MR - K51, GMSD ... BR - K51)
For measurements of over- or under pressure:
Pressure sensors GMSD 2,5 MR - K51, GMSD 25 MR - K51 and GMSD 350 MR - K51 allow for
measurements of under pressure up to the entire over pressure measuring range by re-plugging the tube
to pressure port A.
Please note that all values are displayed as positive values. No minus sign will be shown. (Example for
GMSD 25 MR - K51: For tube connection B -19.99 to 25.00 mbar. If you
A under pressure measurements down to -25.00 mbar could be carried out with the
display showing the value 25.00 (no minus sign).
For measurements of pressure differences:
Connect both plastic tubes with an internal diameter B and A; make sure to
.
Absolute pressure sensors (types: GMSD ... BA - K51)
Connect plastic tube with an inner diameter of 4 mm A. (Port B is not used.)
Stainless steel sensors (types: MSD ... MRE, MSD ... BRE, MSD ... BAE)
For measurements of over-, under- or absolute pressure screw sensor to G1/2" pressure terminal or plug
plastic tube to a suitable adapter. Connection to instrument: Use cable MSD-K51.