Omega Speaker Systems RH/Temperature Transmitter HX93A User Manual
Page 10
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9. RH Measured Vs Output Reading
10. Temperature Output Calculations
To calculate Temperature by measuring the current or voltage output
use the following formulas.
For Current output in ºC (-20 to 75ºC)
ºC = (Output measured in miliamps – 4) ÷ .1684 - 20 = ºC
EXAMPLE:
(12.0 mA – 4) ÷ .1684 - 20 = 27.5ºC
For Current output ºF (-4 to 167ºF)
ºF = (Output measured in miliamps – 4) ÷ .0935 - 4 = ºF
EXAMPLE:
(12.0 mA – 4) ÷ .0935 - 4 = 81.6ºF
For Voltage output in ºC (-20 to 75ºC)
ºC = (Output measured in volts ÷ .010526) - 20 = ºC
EXAMPLE:
(0.50 Vdc ÷ .010526) - 20 = 27.5ºC
For Voltage output ºF (-4 to 167ºF)
ºF = (Output measured in volts ÷ .005848) - 4 = ºF
EXAMPLE:
(0.50 Vdc ÷ .005848) - 4 = 81.5ºF
% Relative
Output
Humidity
Current (mA)
Voltage (Vdc)
5 4
0.8
.05
10
5.6
.10
15
6.4
.15
20
7.2
.20
25
8.0
.25
30
8.8
.30
35
9.6
.35
40
10.4
.40
45
11.2
.45
50
12.0
.50
55
12.8
.55
60
13.6
.60
65
14.4
.65
70
15.2
.70
75
16.0
.75
80
16.8
.80
85
17.6
.85
90
18.4
.90
95
19.2
.95
9
HX93A, HX93DA SERIES
RH/Temperature Transmitter