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OdaLog
®
Gas Logger User Manual
P/N: 10-1000
Revision: F, Issued: October 2019
Page: 24
Figure 6 - Calibration Mixture Connections
Figure 7 - Magnetic switches
(RMS/LMS, SPAN/ NULL)
9.4 Calibration Mixture Application Times & Rates
This table shows the minimum calibration mixture flow time & rate necessary for calibration. Be sure
that the correct flow rate and time is used.
Table 5 Cal Gas Times & Rates
Calibration Mixture
kind
Recommended
Gas Level
Sensor Type
Minimum Flow Rate
(ml/min)
Gas flow
time
Hydrogen sulphide
50 ppm
H
2
S
250-500
5 Minutes
H
2
S*
250-500
15 Minutes
Carbon monoxide
500 ppm
CO
250 – 500
3 Minutes
Sulphur dioxide
20 ppm
SO
2
500
5 Minutes
Nitric oxide
50 ppm
NO
250 – 500
10 Minutes
Nitrogen dioxide
10 ppm
NO
2
500
10 Minutes
Hydrogen cyanide
10 ppm
HCN
500
10 Minutes
Ammonia
50 ppm
NH
3
250 – 500
10 Minutes
Ozone
1 ppm
O
3
1000
10 Minutes
Chlorine
5 ppm
CL
2
1000
10 Minutes
Nitrogen
0.0 %VOL
O
2
250 – 500
3 Minutes
H
2
S* - LONG TERM LOGGER (LL MODEL) & 0-2000PPM STANDARD (SL) LOGGER
N.B. Seek advice from calibration mixture supplier as to safe storage and handling procedures for
calibration mixtures.