HM1520 Datasheet, PDF (2/4 Pages) Humirel – RELATIVE HUMIDITY MODULE

TECHNICAL DATA
Characteristics (Vs = 5.0Vdc , R_L > 1 MΩ otherwise stated)
Characteristics
Humidity measuring range / Ta –30 to 60°C
Relative Humidity accuracy(1-20%RH) at 23°C
Relative Humidity accuracy at 55% RH at 23°C
Voltage supply
Nominal output @ RH = 10 % / Ta 25°C
Current consumption
Temperature coefficient(10 to 50 °C and 1 to 20% RH)
Averaged Sensitivity from 5% to 10 % RH
Output Impedance
Sink current capability (R _L = 15 kohm)
Humidity Hysteresis
Long term stability
Response time (5 to 10% RH, static, @63%)
Symbol
RH
RH
RH
V_s
V_out
I_c
T_cc
∆mV/%RH
Z
I_s
τ
Min
1
4.75
1.17
Typ
+/-2
+/-5
5.00
1.24
0.4
< 0.1
+26
70
+/-1.5
0.5
5
Max
99
+/- 3
5.25
1.31
0.8
300
Unit
%RH
%RH
%RH
V
V
mA
%RH / °C
mV/%RH
Ohms
µA
% RH
%RH/yr
s
HM1520 Preliminary Specification when used from 1 to 30% RH
2000
1900
V_out= V_S ( 5.12 RH + 197) ^*
1800
or
1700 ^{RH = 0.195 Vout / VS - 38.5 *}
with
1600
V _out
in
mV,
V_S
in
V
and
RH
in
%
1500
1400
1300
1200
1100
1000
0
5
10
15
20
25
30
35
Relative Humidity in % RH
• Those equations can be used above 30% RH and allow to obtain an over all accuracy as described in page one of this
document in all the humidity measuring range
• Temperature (in the range 0 to 50°C) does not affect HM1520 measurement when used from 1 to 30% RH. No temperature
compensation is required.
•
Signal output from 1 to 20% RH at 23°C :
RH (%)
Vout (mV)
RH (%)
Vout (mV)
0
11
1269
1
1013
12
1294
2
1038
13
1320
3
1064
14
1346
4
1089
15
1371
5
1115
16
1397
6
1141
17
1422
7
1166
18
1448
8
1192
19
1474
9
1217
20
1499
10
1243
With Vs = 5.0 Volts DC
Calibration data are t r a c e a b l e t o N I S T standards through CETIAT laboratory.
Humirel Sensor Device Data / HPC009-20 RevA December 2000
2