Oxygen Monitor SGM7 5 Technical data
HB_SGM7_eng.docx 12
5 Technical data
5.1 Characteristics
Description............................................. Protective gas monitor SGM7
Application ............................................. Measuring of oxygen concentration
in gases
Measuring range .................................... 1 vol-ppm…20.6 vol% O
2
, down to
10-20 vol-ppm possible (reducing
conditions, see chapter 4.2),
up to 100 vol% on request
Accuracy at normal pressure ................. Relative measuring error < 5%
Measuring gas flow rate ......................... 5…10 l/h
Max. permitted pressure of the gas ........ 20 mbar over pressure
Max. permitted temp. of the gas ............. 80 ° C
∆p over measuring cell........................... Approx. 1 kPa (100 mm WS) at 10 l/h
Working conditions ................................ 10…45 °C, rH < 80 % at 20 °C
Storage conditions ................................. -20…60 °C, rH < 95 % at 20 °C
Degree of protection .............................. IP40
5.2 Mechanical data
Dimensions ............................................ 135 x 100 x 240 mm
Weight ................................................... 3 kg
Gas inlet ................................................ Swagelok
®
3 mm (at carbon filter
Swagelok
®
6 mm)
Gas outlet .............................................. Tube nipple 4 mm
5.3 Electrical engineering / electronics
5.3.1 General data
Current supply
Voltage ....................................... 100…240 V AC, 47…63 Hz
Current consumption .................. 20 VA
Heater measuring cell................. 24 V DC, approx. 10 W
(controlled internally)
Keypad and display
Keypad .................................................. 3 keys
Text display ........................................... LCD dot-matrix
5.3.2 Interface data
Serial interface RS-232
Transfer rate .................................. Max. 19200 Baud, adjustable
Stop bits ........................................ 1
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