Honeywell VA201T Calibration Handbook page 11

Then adjust the span potentiometer to read the following value:
Span Gas Value x Factor x 2.5 = Calibration value (in VDC) (+/- 3 % of the scale)
Gas (Q1) Sensor
SCL2-7CLH
CL2
SCL2-S7
CO
SCO-4BW
Combustible SCH4-VQ21TB
ETO
SETO-7ETO
H2
SH2-3HYE
H2S
SH2S-7HH
HCL
SHCL-7HL
HCN
SHCN-7HCN
NH3
SNH3-1000S
NO
SNO-7NT
NO2
SNO2-B1
O2
SO2-4OX
SO2
SSO2-7SH
Smoke
SCO-7EF
Gas (Q2) Sensor
C3H8
SQ2-COMB
CH4
SQ2-COMB
CO
SCO-MONOXC
SQ2-FIG
24 hours
H2
SQ2-COMB
Refrigerant
SQ2-FREON
500 ml/min = 30 l/h on regulator
VA201T / VA201M
Full scale
VA201T/M CALIBRATION INFORMATION - Q1 Sensor
VA201T VA201M
Scale Scale
15.3 ppm 15 ppm
0 - 255 ppm 0 -250 ppm
0 - 102% 0 -100%
0 – 20.4 ppm 0 – 20ppm
0 - 2.5 % 0 - 2.5 %
0 - 51 ppm 0 - 50 ppm
0 -51 ppm 0 - 50 ppm
0 - 51 ppm 0 - 50 ppm
0 - 102 ppm 0 -100 ppm
0 - 102 ppm 0 -100 ppm
0 – 10.2 ppm 0 – 10 ppm
0 – 25.5% 0 – 25%
0 – 10.2 ppm 0 – 10 ppm
0 -35.7 ppm 0 - 35.7 ppm
VA201T/M CALIBRATION INFORMATION - Q2 Sensor
VA201T VA201M
Scale Scale
0 -102% 0 - 100%
0 -102% 0 - 100%
0 - 255 ppm 0 - 250 ppm
2 1
0 -102% 0 - 100%
0 - 1020 ppm 0 -1000 ppm
Calibration Handbook
Zero
Warm-Up Factor
Pot
5 min. - -
5 min. - -
Table
5 min. 3
13
5 min. * - 3
5 min. - -
5 min. - -
5 min. * - 3
5 min. - -
1 hour - 3
5 min. * - 3
5 min. - 3
5 min. ** - -
5 min. - -
5 min. - -
Zero
Warm-Up Factor
Pot
15 min. - 2
15 min. - 2
5 min. - -
0.04
15 min. - 2
24 hours 1.2 2
11
Span Flow Rate
Notes
Pot L/min
2 0.5
2 0.5
1% Volume CH4 =
2 0.5
20% LEL CH4
* If no backup
circuit for the
2 1
sensor, 7 day
warm up required
2 0.5
2 1
* If no backup
circuit for the
2 1
sensor, 7 day
warm up required
2 1
2 0.5
* If no backup
circuit for the
2 1
sensor, 7 day
warm up required
2 1
** If no backup
circuit for the
2 0.5
sensor, 24 hour
warm up required
2 1
2 0.5
Span Flow Rate
Notes
Pot L/min
1 0.04
1% Volume CH4 =
1 0.04
20% LEL CH4
2 0.5
1% Volume H2 =
1 0.04
25% LEL H2
1 0.04