79
8014084/ZWT7/V3-1/2020-06 | SICK
O P E R A T I N G I N S T R U C T I O N S | TRANSIC111LP
Subject to change without notice
ADJUSTMENT
6
6.4.2
Calibration
6.4.2.1
Using ambient air
For information on calibration with ambient air,
see “Using ambient air”, page 69
6.4.2.2
Using calibration gas
SICK recommends using normal ambient air for calibrating the TRANSIC111LP version for
ambient gas measurement.
If a calibration gas (such as synthetic air or a gas with precise O
2
concentration) is used,
see “Setting up the gas supply”, page 78
cont.
The TRANSIC111LP does not show the calibration gas concentration correctly because
only the probe is in the calibration gas. The correct measured value can be taken from the
diagram below (Fig. 40).
The Figure shows the measured value when only the sample gas cell (and not the
measuring device enclosure) is exposed to the calibration gas.
Fig. 37: TRANSIC111LP measured values depending on the O
2
concentration in the calibration gas
6.4.2.3
Information on calibration gases
●
Factory calibration: Mixtures of dry N
2
and O
2
●
Humidity / CO
2
concentrations: 0%.
●
Gases recommend for adjustment: Nitrogen gas mixtures.
●
When using the sample gas cell: Volume flow for calibration and adjustment about
0.5 l/min higher volume flow for shorter response times. The higher the gas volume, the
higher the gas pressure. Select an adequate tubing size for the escaping gas.
0
2
4
6
8
10
12
14
16
18
20
22
24
0
2
4
6
8
10
12
14
16
18
20
22
24
O
2
concentration of the calibration gas (% O
2
)
M
eas
ur
ing
d
evi
ce d
isp
lay
(% O
2
)
NOTICE:
Allow enough time for the gas concentration to stabilize when doing calibrations/
adjustments.
