Oxygen Monitor SGM7 8 Operation
HB_SGM7_eng.docx 23
8.2 Parametrization
8.2.1 Adjustable parameters
Chart 5: Overview of the adjustable parameters
Parameter Range Remarks
Display
O
2
: 0…21 vol% or in ppm
Range up to 100 vol% on
request
Analog output
0-20 mA or 4-20 mA
Alternatively 0-10 V or
2-10 V
Scale of output
Linear
Logarithmic (Basis 10)
Logarithmic scale
recommended if measuring
value exceeds several
decades
Suppressed zero
point
0.00001…21 vol% or
0.1…210000 ppm
For optimal resolution in a
certain range
Max. measuring value
21.0 vol% or 210000 ppm,
higher values on request
This value corresponds to
the terminal value of the
analog signal (e.g. 20 mA)
Response time t
90
1 ... 99 sec
Formed by arithmetical
average of the measured
value
Limit value
0…99.99 vol%
or 0…999999 ppm
Selectable as lower or
upper limit value with the
signs”>” or ”<”
Delay time of the limit
value
1 ... 99 sec
Time to alarm when limit
value is exceeded
Transmission capacity
of RS-232-interface
4800, 9600, 19200 Baud
Measuring gas flow
Internal pump, switch on/off
by keypad
Pumping power is
regulated by internal flow
measurement
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