DESCRIPTION
The HIH-4000 Series Humidity Sensors are designed
specifically for high volume OEM (Original Equipment
Manufacturer) users.
The HIH-4000 Series delivers instrumentation-quality RH
(Relative Humidity) sensing performance in a competitively
priced, solderable SIP (Single In-line Package).
Available in two lead spacing configurations, the RH sensor is
Direct input to a controller or other device is made possible by
this sensor’s near linear voltage output. With a typical current
draw of only 200 µA, the HIH-4000 Series is often ideally
suited for low drain, battery operated systems.
Tight sensor interchangeability reduces or eliminates OEM
production calibration costs. Individual sensor calibration data
is available.
FEATURES
Molded thermoset plastic housing
Near linear voltage output vs % RH
Laser trimmed interchangeability
Low power design
Enhanced accuracy
Fast response time
Stable, low drift performance
Chemically resistant
a laser trimmed, thermoset polymer capacitive sensing
element with on-chip integrated signal conditioning.
The sensing element's multilayer construction provides
excellent resistance to most application hazards such as
wetting, dust, dirt, oils and common environmental chemicals.
POTENTIAL APPLICATIONS
Refrigeration equipment
HVAC (Heating, Ventilation and Air Conditioning)
equipment
Medical equipment
Drying
Metrology
Battery-powered systems
OEM assemblies
Table 1. Performance Specifications (At 5 Vdc supply and 25 ºC [77 ºF] unless otherwise noted.)
Parameter
Minimum
Typical
Maximum
Unit
Specific Note
Interchangeability (first order curve)
–
–
–
–
–
0% RH to 59% RH
-5
–
5
% RH
–
60% RH to 100% RH
-8
–
8
% RH
–
Accuracy (best fit straight line)
-3.5
–
+3.5
% RH
1
Hysterisis
–
3
–
% RH
–
Repeatability
–
±0.5
–
% RH
–
Settling time
–
–
70
ms
–
Response time (1/e in slow moving air)
–
5
–
s
–
Stability (at 50% RH)
–
1.2
–
% RH
–
Voltage supply
4
–
5.8
Vdc
2
Current supply
–
200
500
µA
–
st
Voltage output (1 order curve fit)
V
OUT
=(V
SUPPLY
)(0.0062(sensor RH) + 0.16), typical at 25 ºC
Temperature compensation
True RH = (Sensor RH)/(1.0546 – 0.00216T), T in ºC
Output voltage temperature, coefficient at
-4
mV/ºC
–
–
50% RH, 5 V
Operating temperature
-40[-40]
See Figure 1.
85[185]
ºC[ºF]
–
Operating humidity
0
See Figure 1.
100
% RH
3
Storage temperature
-50[-58]
125[257]
ºC[ºF]
–
–
Storage humidity
See Figure 2.
% RH
3
Specific Notes:
General Notes:
1. Can only be achieved with the supplied slope and offset.
Sensor is ratiometric to supply voltage.
For HIH-4000-003 and HIH-4000-004 catalog listings only.
Extended exposure to >90% RH causes a reversible shift
2. Device is calibrated at 5 Vdc and 25 ºC.
of 3% RH.
3. Non-condensing environment.
Sensor is light sensitive. For best performance, shield
sensor from bright light.
FACTORY CALIBRATION DATA
HIH-4000 Sensors may be ordered with a calibration and data
printout. See Table 2 and the order guide on the back page.
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-4000-003
92
030996M
337313
0.826 V
3.198 V
0.826 V
31.483 mV/%RH
(V
OUT
- zero offset)/slope
(V
OUT
- 0.826)/0.0315
V
SUPPLY
(0.1652 to 0.7952)
2
www.honeywell.com/sensing
Figure 1. Operating Environment (Non-condensing environment.)
100%
90%
80%
Relative Humidity
70%
60%
50%
40%
30%
20%
10%
0%
-40
-20
0
20
40
60
80
100
Recommended operating zone
Operating zone limited to <50 hours
No specification zone
Temperature ºC
Figure 2. Storage Environment (Non-condensing environment.)
100%
90%
80%
Relative Humidity
70%
60%
50%
40%
30%
20%
10%
0%
-40
-20
0
20
40
60
80
100
120
140
Recommended storage zone
Temperature ºC
Honeywell Sensing and Control
3
Figure 3. Typical Output Voltage vs Relative Humidity (At 25 ºC and 5 V.)
4
TYPICAL OUTPUT VOLTAGE VS RELATIVE HUMIDITY (at 25 ºC and 5 V)
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)
TYPICAL OUTPUT VOLTAGE (BFSL) VS RELATIVE HUMIDITY (at 0 ºC
Figure 4. Typical Output Voltage (BFSL) vs Relative
and 70 ºC,
(At 0 ºC, 70 ºC and 5 V.)
Humidity
5 V)
4.5
4
3.5
Output Voltage (Vdc)
3
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
Figure 5. Mounting Dimensions (For reference only. mm/[in])
HIH-4000-002
HIH-4000-004
4,17
[0.164]
HIH-4000-001
HIH-4000-003
HIH-4000-005
4,17
[0.164]
2,03
[0.080]
8,59
[0.338]
8,59
[0.338]
1,91
[0.075]
12,7 MIN.
[0.50]
-ve
OUT
1,27
[0.050]
3X 0,38
[0.015]
2,54
[0.100]
+ve
12,2 MIN.
[0.48]
-ve
OUT
2,54
[0.100]
+ve
0,89
[0.035]
3X 0,38
[0.015]
2,54
[0.100]
Figure 6. Typical Application Circuit
+ Ve
Supply Voltage (5 V)
VOLTAGE OUT
80
kOhm
HIH-40XX
OUT
- Ve
Minimum
Load
0V
ORDER GUIDE
Catalog Listing
HIH-4000-001
HIH-4000-002
HIH-4000-003
HIH-4000-004
HIH-4000-005
Description
Integrated circuit humidity sensor, 2,54 mm [0.100 in] lead pitch SIP
Integrated circuit humidity sensor, 1,27 mm [0.050 in] lead pitch SIP
Integrated circuit humidity sensor, 2,54 mm [0.100 in] lead pitch SIP, calibration and data printout
Integrated circuit humidity sensor, 1,27 mm [0.050 in] lead pitch SIP, calibration and data printout
Equivalent to HIH-4000-001
ADDITIONAL HUMIDITY SENSOR INFORMATION
See the following associated literature at
www.honeywell.com/sensing:
Product installation instructions
Application sheets:
– Humidity Sensor Performance Characteristics
– Humidity Sensor Theory and Behavior
– Humidity Sensor Moisture and Psychrometrics
– Thermoset Polymer-based Capacitive Sensors
Honeywell Sensing and Control
5
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