Oxygen Monitor SGM7.2 8 Operation
8.2 Parameter
Setting
8.2.1 Adjustable
Parameter
Table 7: 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
alternative 0-10 V or 2-10 V
Scale of output
Linear
Logarithmic (Basis 10)
Logarithmic scale
recommended, if the
measurement goes over
any decades.
Suppressed zero at
logarithmic indication
0,00001…21 Vol.-% or
0,1…21000,0 ppm
For optimal resolution at a
special range
max. measuring value
20,000…21,000 Vol.-% or
200000…210000 ppm,
greater values on request
This value corresponds to
the final value of the analog
signal (e.g. 20 mA)
Response time t
90
1 ... 99 s
Formed by arithmetical
average of the measured
value
Limit value
0…99,99 Vol.-%
or 0…999999 ppm
selectable as lower or
upper limiting value with
the signs”>” or ”<”
Delay time of the
limiting value
1 ... 99 s
The limiting value must be
exceeded for this time
before alarm is signalled.
transmission capacity
of RS-232-interface
4800, 9600, 19200 Baud
Measuring gas flow
Internal pump, switch on/off
by soft key, switch at the
rear side or RS232
pump performance
High/Low via keyboard or
external controlling
(RS232) adjustable
HB_SGM72_Rehm_eng.DOC
24
