TECHNICAL DATA
RELATIVE HUMIDITY/ TEMPERATURE MODULE
HTM2500
Based on the rugged HTS2010 humidity / temperature sensor , HTM2500 is a dedicated
humidity and temperature 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’s humidity linear voltage output.
1
M
AIN
FEATURES
q
Small size
q
Not affected by water immersion
q
Full interchangeability
q
High reliability and long term stability
q
Typical 1 to 4 Volt DC output for 0 to 100% RH at 5 V DC supply
q
Humidity calibrated within +/- 2% RH @ 55% RH
q
Temperature measurement through NTC 10kohm +/- 3% direct output
q
Ratiometric to voltage supply
q
Suitable for 3 to 10 Volts supply voltage
H
UMIDITY
q
q
q
q
SENSOR SPECIFIC FEATURES
Instantaneous de-saturation
after long periods in saturation phase.
Patented solid polymer structure.
High resistance to chemicals.
Fast response time.
M
AXIMUM
Ratings
RATINGS
Symbol
Tstg
Vs
RH
Value
-40 to 85
12
0 to 100
-30 to 70
Unit
°C
Vdc
% RH
°C
RELATIVE HUMIDITY IN %
OPERATING RANGE
100
90
80
70
60
50
40
30
20
10
0
Int
erm
Storage Temperature
Supply Voltage
(peak)
Humidity Operating Range
itte
O
nt
ra
pe
STEADY
STATE
n
tio
Temperature Operating Range
Ta
Peak conditions:
less than 10% of the operational time.
C
HARACTERISTICS
(Ta = 23°C, Vs = 5Vdc, R
L
> 1M
otherwise stated)
-40
-20
0
20
40
60
80
AMBIENT TEMPERATURE IN
¡C
Characteristics
Humidity measuring range
Relative Humidity accuracy (10 to 95% RH)
Voltage supply
Nominal output @ RH = 55%
Current consumption
Temperature coefficient (10 to 50 °C )
Averaged Sensitivity from 33% to 75% RH
Sink current capability (R
L
Humidity Hysteresis
Long term stability
Response time (33 to 76% RH, static, @ 63%)
Output impedance
15 k )
Recovery time after 150 hours of condensation
Symbol
RH
RH
V
s
V
out
I
c
T
cc
mV/% RH
I
s
t
Min
1
Typ
+/-3
Max
99
+/- 5
5.25
2.54
0.8
Unit
% RH
% RH
V
V
mA
% RH/°C
mV/% RH
4.75
2.42
5.00
2.48
0.4
+ 0.1
+25
300
10
+/-1.5
0.5
5
A
s
% RH
%RH/yr
s
Z
70
HUMIREL [ Humirel ]
