48
8015383/ZUQ7/V1-3/2020-06 | SICK
O P E R A T I N G I N S T R U C T I O N S | TRANSIC151LP
Subject to change without notice
6
ADJUSTMENT
6.2
Calibration
The analog output can be frozen for calibration. Use function
Cal.C
,
actual value (CAL.C)”, page 36
with the keypad.
6.2.1
Using ambient air
●
Normal ambient air provides a convenient way to calibrate the TRANSIC151LP because
the oxygen concentration of dry ambient air is constant at 20.95% O
2
.
▸
Ensure the sensor is completely in the ambient air. Important: Pay attention to
measured oxygen value of 21.0% O
2
±0.2% O
2
.
▸
Correct the humidity.
shows the calibration display expected for the ambient air as function of the
temperature (ºC) and relative humidity (% r.h.)..
The following Table shows the measured oxygen values (in % O
2
) for a gas concentration of
20.95% O
2
with varying humidity values. The Table shows examples for measured values
when measuring wet gases without r.h. corrections having been entered in the
TRANSIC151LP measuring device (i.e., the relative humidity is set to 0% r.h.). Both gas
dilution effect and r.h. dependency effect are included in the Table.
(% r.h.)
Temp (ºC)
0
10
20
30
40
50
60
70
80
90
100
0
21.0
21.0
21.0
21.0
20.9
20.9
20.9
20.9
20.9
20.9
20.8
5
21.0
21.0
21.0
20.9
20.9
20.9
20.9
20.8
20.8
20.8
20.8
10
21.0
21.0
20.9
20.9
20.9
20.8
20.8
20.8
20.7
20.7
20.7
15
21.0
21.0
20.9
20.9
20.8
20.8
20.7
20.7
20.6
20.6
20.6
20
21.0
20.9
20.9
20.8
20.8
20.7
20.6
20.6
20.5
20.4
20.4
25
21.0
20.9
20.8
20.8
20.7
20.6
20.5
20.4
20.3
20.3
20.2
30
21.0
20.9
20.8
20.7
20.6
20.4
20.3
20.2
20.1
20.0
19.9
35
21.0
20.9
20.7
20.6
20.4
20.3
20.1
20.0
19.8
19.7
19.6
40
21.0
20.8
20.6
20.4
20.2
20.1
19.9
19.7
19.5
19.3
19.1
45
21.0
20.8
20.5
20.3
20.0
19.8
19.5
19.3
19.1
18.8
18.6
50
21.0
20.7
20.4
20.1
19.7
19.4
19.1
18.8
18.5
18.2
17.9
55
21.0
20.6
20.2
19.8
19.4
19.0
18.6
18.3
17.9
17.5
17.2
60
21.0
20.5
20.0
19.5
19.0
18.5
18.1
17.6
17.1
16.7
16.2
65
21.0
20.4
19.7
19.1
18.5
17.9
17.3
16.8
16.2
15.6
15.1
70
21.0
20.2
19.4
18.7
17.9
17.2
16.5
15.8
15.1
14.4
13.8
75
21.0
20.0
19.1
18.2
17.3
16.4
15.5
14.7
13.8
13.0
12.2
80
21.0
19.8
18.7
17.5
16.5
15.4
14.4
13.4
12.4
11.4
10.4
Table 3: Oxygen measured values for relative humidity