Calibration; General; Cross Interference From Other Gases; Sensor Life - Honeywell 705 Series Operating Instructions Manual

MAN0362.P65 Issue 03, Mar 01
00705M5001

5.1 GENERAL

When testing and calibrating a gas detection system, the
sensors must be gassed in accordance with the practice
recommended for the particular installation. The sensor
should be calibrated with hydrogen sulphide using the
procedures detailed in Section 6.
5.2 CROSS INTERFERENCE FROM OTHER
Some gases other than hydrogen sulphide can produce an
output current. Those which may be encountered and typical
examples of their effect (if any) at 20ºC are as follows:

5.3 SENSOR LIFE

The expected life of the detector assembly is greater than
two years. The guaranteed life is 12 months in use, plus six
months storage, subject to storage at a stable temperature
of between -10 to +20ºC. This guarantee will not apply to
extended use in harsh environments.

5. CALIBRATION

GASES
Gas
Carbon Dioxide
Carbon Monoxide
Ethylene
Hydrogen
Methane
Sulfur Dioxide
Concentration
25%
100ppm
500ppm
100ppm
5%
100ppm
19
705 Sensor
Indication
in ppm H S
2
0
0
0
0
1
0