HTG3500 Datasheet, PDF (1/10 Pages) Humirel – RELATIVE HUMIDITY AND TEMPERATURE MODULE

HTG3500 Series
Compliant with RoHS regulations
RELATIVE HUMIDITY AND TEMPERATURE MODULE
Based on the rugged HUMIREL humidity sensor, the HTG3500 series are dedicated humidity and temperature plug and
play transducers designed for OEM applications where reliable and accurate measurements are needed. Direct interface
with a micro-controller is made possible with the modules humidity linear voltage and direct NTC outputs. The
HTG3500 series are designed for high volume and demanding applications where power consumption is critical.
• HTG3500 SERIES GENERAL CHARACTERISTICS
Main Features
Suitable for small bulk assembly
Product free from Lead, Cr (6+), Cd and Hg. Compliant with RoHS
Reliability not affected by repeated condensation
Full interchangeability. Better than +/-3%RH and +/-0.25°C
Demonstrated reliability and long term stability
Humidity calibrated within +/- 3% RH @ 55% RH
Temperature measurement through NTC direct output
Ratiometric to voltage supply within the specified range
HTG3500 Series are also available with a Humidity Linear Frequency Output: HTG3400 Series (HPC124_0)
Maximum Ratings
Storage Temperature
T_stg
Supply Voltage (Peak)
V_cc
Humidity Operating Range
RH
Temperature Operating Range
T_a
Maximum Output Current (Peak) I _peak
Maximum Power
Pd
Peak conditions: less than 10% of the operating time.
Electrical Characteristics
(@T=23°C, R_L>1MΩ unless otherwise noted)
- 40 to +125
20
0 to 100
-40 to +110
3
10
°C
V_dc
%RH
°C
mA
mW
100
75
50
25
0
-40
-20
OPERATING RANGE
Peak Condition
at 450g/kg
Maximum Humidity
of 250g/kg
0
20
40
60
80
100
TEMPERATURE IN °C
Humidity Measuring Range
RH
0
Relative Humidity Accuracy (10% to 95%RH)
Temperature coefficient (10°C to 50°C)
T_cc
Recovery time after 150 hours of condensation
t
Humidity hysteresis
Output impedance
Z
Sink current capability (R_{L_Min} = 8 kOhms) ⁽¹⁾
I
Warm up time
t_w
Time Constant (at 63% of signal) 33%RH to 75%RH ⁽²⁾
τ
(1) Conditions of sink current: Vout + 0.054V (3%RH) at Vout = 0.600 V (Vout min)
(2) At 1m/s air flow
±3
-0.05
10
+/-1
150
5
100
%RH
±5
%RH
-0.1 %RH/°C
s
%RH
50
Ω
1
mA
ms
10
s
*
Nominal resistance @ 25°C
R
9.9
10
10.1
Beta value : B25/50
B
3346
3380
3414
Temperature measuring range
Nominal Resistance Tolerance at 25°C
B value tolerance
T_a
-40
85
R_n
1
B
1
Time Constant
10
* Except for low temperatures
________________________________________________________________________________________
Humirel HTG3500 Series Datasheet / HPC123 Rev B November 2007
k
K
°C
%
%
s
1