H36.0.12.6C-09
Operating Manual GMH 3691
page 2 of 12
Index
1
DESIGNATED USE ................................................................................................................................................. 2
2
GENERAL NOTE .................................................................................................................................................... 2
3
OPERATING AND MAINTENANCE ADVICE ........................................................................................................ 3
4
SAFETY REQUIREMENTS .................................................................................................................................... 3
5
DISPLAY AND CONTROL ELEMENTS ................................................................................................................. 4
5.1
D
ISPLAY ELEMENTS
............................................................................................................................................ 4
5.2
P
USHBUTTONS
................................................................................................................................................... 5
5.3
C
ONNECTIONS
.................................................................................................................................................... 5
6
CONFIGURATION .................................................................................................................................................. 5
7
NOTES TO SPECIAL FUNCTIONS ....................................................................................................................... 7
7.1
I
NPUT OF ABSOLUTE PRESSURE
('P.A
BS
') ............................................................................................................. 7
7.2
Z
ERO
D
ISPLACEMENT
(’O
FFSET
’)
TEMPERATURE
.................................................................................................. 7
7.3
A
LARM FUNCTION
............................................................................................................................................... 7
7.4
B
ASE
A
DDRESS
(’A
DR
.’) ...................................................................................................................................... 7
8
OXYGEN MEASURING - PLEASE NOTE ............................................................................................................. 7
8.1
A
PPLICATION OF THE DIFFERENT SENSOR TYPES
GGO
369
/
370
AND
GOO
369
/
370 .......................................... 7
9
CALIBRATION OF THE OXYGEN SENSOR ......................................................................................................... 8
9.1
1-P
OINT AIR CALIBRATION
('CAL
A
IR
') .................................................................................................................. 8
9.2
2-P
OINT CALIBRATION
('CAL
2-P
T
') ..................................................................................................................... 8
9.3
V
ALUATION OF SENSOR STATE
(ELEC) ................................................................................................................ 8
10
ERROR AND SYSTEM MESSAGES .................................................................................................................. 9
10.1
E
RROR AND
S
YSTEM
M
ESSAGES DURING
O
XYGEN
C
ALIBRATION
....................................................................... 9
11
THE SERIAL INTERFACE ................................................................................................................................ 10
11.1
T
HE FOLLOWING INTERFACE FUNCTIONS WILL BE SUPPORTED
:......................................................................... 10
12
SPECIFICATION ............................................................................................................................................... 11
13
DISPOSAL INSTRUCTION: .............................................................................................................................. 11
1
Designated Use
The GMH 3691 measures the oxygen partial pressure and the oxygen concentration in gas mixtures and air.
For the measurement a external sensor of the type GOO ... or GGO ... is required. The measurement takes place at
the opening of the external sensor.
Due to the design of the sensor, the device has to be calibrated at regular intervals (at fresh air =20.95% oxygen) to
get accurate measuring values. If the sensor is used up, this will be detected at calibration and the sensor element
has to be replaced before the next measurement.
2 General Note
Read this document carefully and get used to the operation of the device before you use it. Keep this document
within reach for consulting in case of doubt.
