HIH-4602-L Series
Humidity Sensors
DESCRIPTION
HIH-4602-L Series Relative Humidity (RH) sensors are
designed to deliver RH sensing in a rugged, low-cost slotted
TO-5 can.
The laser-trimmed, thermoset polymer capacitive sensing
elements have on-chip integrated signal conditioning, helping
to reduce product development times.
FEATURES
•
•
•
•
•
•
•
Near linear voltage output vs %RH
Laser-trimmed interchangeability
Enhanced accuracy, fast response
Chemically resistant
Stable, low drift performance
Built-in static protection
TO-5 can
POTENTIAL APPLICATIONS
•
•
•
•
•
Refrigeration
Drying
Meteorology
Battery-powered systems
OEM (Original Equipment Manufacturer) assemblies
HIH-4602-L-CP sensors include a calibration and data printout
to allow individually matched downstream electronics and
±3.5 %RH total accuracy.
A typical current draw of only 200 µA allows use in battery-
powered systems.
HIH-4602-L Series
Table 1. Performance Specifications (At 5 Vdc supply and 25
ºC
[77
ºF]
unless otherwise noted.)
Parameter
Interchangeability (first order curve)
0% RH to 59% RH
60% RH to 100% RH
Accuracy (best fit straight line)
Hysterisis
Repeatability
Settling time
Response time (1/e in slow moving air)
Stability (at 50% RH in one year)
Voltage supply
Current supply
Output voltage temp. coefficient at 50% RH, 5 V
Voltage output (1st order curve fit)
Temperature compensation
Operating temperature
Operating humidity
Storage temperature
Storage humidity
Specific Notes:
1. Applies to HIH-4602-L-CP only.
2. Device is calibrated at 5 Vdc and 25
ºC.
3. Non-condensing environment.
Minimum
Typical
Maximum
Unit
Specific
Note
–
–
–
1
–
–
–
–
–
–
–
–
2
–
–
–
–
-5
–
5
% RH
-8
–
8
% RH
-3.5
–
+3.5
% RH
–
3
–
% RH
–
±0.5
–
% RH
–
–
70
ms
–
30
–
s
–
1.2
–
% RH
4
–
5.8
Vdc
–
200
500
µA
–
-4
–
mV/°C
V
OUT
= (V
SUPPLY
)(0.0062(sensor RH) + 0.16), typical at 25
°C
True RH = (sensor RH)/(1.0546-0.00216T), T in
°C
-40[-40]
See Figure 1.
85[185]
°C[°F]
–
0
See Figure 1.
100
% RH
3
-40[-40]
See Figure 2.
125[257]
°C[°F]
–
See Figure 2.
% RH
3
General Notes:
•
Sensor is ratiometric to supply voltage.
•
Extended exposure to >90% RH causes a reversible shift of
3% RH.
•
Sensor is light sensitive. For best performance, shield sensor
from bright light.
Factory Calibration Data
HIH-4602-L-CP Sensors include a calibration and data
printout. See Table 2.
Table 2. Example Data Printout
Model
Channel
Wafer
MRP
Calculated values at 5 V
V
OUT
at 0% RH
V
OUT
at 75.3% RH
Linear output for 3.5% RH
accuracy at 25 °C
Zero offset
Slope
RH
Ratiometric response for
0% RH to 100% RH
V
OUT
HIH-4602-L-CP
92
030996M
337313
0.958 V
3.268 V
0.958 V
30.680 mV/%RH
(V
OUT
- zero offset)/slope
(V
OUT
- 0.958)/0.0307
V
SUPPLY
(0.1915 to 0.8130)
2
www.honeywell.com/sensing
Humidity Sensors
Figure 1. Operating Environment (Non-condensing environment.)
Figure 2. Storage Environment (Non-condensing environment.)
Honeywell Sensing and Control
3
HIH-4602-L Series
Figure 3. Typical Output Voltage vs Relative Humidity (At 5 V and 25
°C.)
4
3.5
3
Output Voltage (Vdc)
2.5
Sensor Response
Sensor Response
Best Linear Fit
2
1.5
1
0.5
0
20
40
60
80
100
Relative Humidity (%RH)
Figure 4. Typical Output Voltage (BFSL) vs Relative Humidity (At 0
ºC, 70 ºC and 5 V.)
4.5
4
3.5
3
Output Voltage (Vdc)
2.5
0C
70 C
2
1.5
1
0.5
0
0
10
20
30
40
50
60
70
80
90
100
Relative Humidity (%)
4
www.honeywell.com/sensing
Humidity Sensors
Figure 5. Mounting Dimensions (For reference only. mm/[in])
1. Case ground
2. Vdc out
3. (-) Power or ground
4. (+) Vdc supply
5. No connection
6. No connection
Figure 7. Typical Application Circuit
Figure 6. RH Sensor Construction
Sensor construction consists of a planar capacitor
with a second polymer layer to protect against most
dirt/dust particles, oils and other hazards.
Honeywell Sensing and Control
5
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