TECHNICAL
1
DATA
RELATIVE HUMIDITY MODULE
HM 1500
Based on the rugged HS1101 capacitive humidity sensor, HM1500 is a dedicated humidity transducer
designed for OEM applications where a reliable and accurate measurement is needed. Direct interface with a
micro-controller is made possible with the module鈥檚 linear voltage output.
M
AIN FEATURES
G
G
G
G
G
G
G
G
G
Small size
Not affected by water immersion
Full interchangeability
High reliability and long term stability
Typical 1 to 4 Volt DC output for 0 to 100 % RH at 5 V DC supply
Calibrated within +/- 2 % RH @ 55 % RH
Very low temperature dependence
Ratiometric to voltage supply within the specified range
Suitable for 3 to 7 Volts supply voltage
HM 1500
H
UMIDITY SENSOR SPECIFIC FEATURES
G
G
G
G
Instantaneous de-saturation
after long periods in saturation phase.
Patented solid polymer structure.
High resistance to chemicals.
Fast response time.
OPERATING RANGE
100
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2
M
AXIMUM RATINGS
Ratings
Symbol
Value
Unit
RELATIVE HUMIDITY IN %
INTERMITTENT
OPERATION
75
ST
EA
DY
Storage Temperature
Supply Voltage
(Peak)
Humidity Operating Range
T
stg
Vs
RH
-30 to 70
7
0 to 100
-30 to 60
擄C
Vdc
% RH
擄C
50
E
AT
ST
25
Temperature Operating Range
Ta
Peak conditions :
less than 10% of the operational time.
0
-40
-20
0
20
40
60
80
AMBIENT TEMPERATURE IN
擄C
C
HARACTERISTICS
Characteristics
(Ta = 23擄C, Vs = 5Vdc, RL
>
1M
鈩?/div>
otherwise stated)
Symbol
Min.
Typ.
Max.
Unit.
Humidity measuring range
Relative Humidity accuracy (10 to 95 % RH)
Voltage supply
Nominal output @ RH = 55 %
Current consumption
Temperature coefficient (10 to 50 擄C )
Averaged Sensitivity from 33% to 75% RH
Sink current capability (R
L
= 15 k
鈩?/div>
)
Recovery time after 150 hours of condensation
Humidity Hysteresis
Long term stability
Response time (33 to 76 % RH, static, @ 63 %)
Output impedance
RH
RH
V
s
V
out
I
c
T
cc
1
+/- 3
4.75
2.42
5.00
2.48
0.4
+ 0.1
+ 25
99
+/- 5
5.25
2.54
0.8
% RH
% RH
V
V
mA
% RH/擄C
mV /% RH
鈭?/div>
mV /
%
RH
I
s
t
300
10
+/-1.5
0.5
碌A(chǔ)
s
% RH
% RH/yr
s
蟿
Z
10
70
鈩?/div>
HPC009 Rev. H October 2001
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