HIH-4010/4020/4021
Series
Humidity Sensors
DESCRIPTION
The HIH-40104020/4021 Series Humidity Sensors are
designed specifically for high volume OEM (Original Equipment
Manufacturer) users.
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-4010/4020/4021 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.
The HIH-4010/4020/4021 Series delivers instrumentation-
quality RH (Relative Humidity) sensing performance in a
competitively priced, solderable SIP (Single In-line Package).
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
•
•
•
•
•
POTENTIAL APPLICATIONS
•
•
Refrigeration equipment
HVAC (Heating, Ventilation and Air Conditioning)
equipment
Medical equipment
Drying
Metrology
Battery-powered systems
OEM assemblies
The RH sensor is 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.
Both products are available in two lead spacing configurations,
as well as with or without calibration and data printouts.
The HIH-4010 is an uncovered integrated humidity sensor, the
HIH-4020 is a covered integrated circuit humidity sensor, and
the HIH-4021 is a covered, condensation-resistant, integrated
circuit humidity sensor. All three products are available in two
lead space configurations.
HIH-4010/4020/4021 Series
TABLE 1. PERFORMANCE SPECIFICATIONS (At 5 Vdc supply and 25
ºC
[77
ºF]
unless otherwise noted.)
Parameter
Minimum
Typical
Maximum
Unit
Specific
Note
–
–
–
1
–
–
–
–
2
3
4
–
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)
% RH
-3.5
–
+3.5
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 in 1 year)
±1.2
% RH
–
–
Stability (at 50 %RH in 1 year)
±0.5
% RH
–
–
Voltage supply
4
5.8
Vdc
–
Current supply
500
µA
–
200
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 temp. coefficient at 50% RH, 5 V
mV/ºC
–
-4
–
–
Operating temperature
-40[-40]
See Figure 1.
85[185]
ºC[ºF]
–
Operating humidity (HIH-4010)
0
See Figure 1.
100
% RH
5
Operating humidity (HIH-4020)
0
See Figure 1.
100
% RH
5
Operating humidity (HIH-4021)
0
See Figure 1.
100
% RH
–
Storage temperature
-50[-58]
125[257]
ºC[ºF]
–
–
Storage humidity
See Figure 2.
% RH
5
Specific Notes:
General Notes:
1. For HIH-4010/20/21-003/004 catalog listings only.
•
Sensor is ratiometric to supply voltage.
2. Includes testing outside of recommended operating zone.
•
Extended exposure to >90% RH causes a reversible
3. Includes testing for recommended operating zone only.
shift of 3% RH.
4. Device is calibrated at 5 Vdc and 25
ºC.
•
Sensor is light sensitive. For best performance, shield
5. Non-condensing environment. When liquid water falls on the
sensor from bright light.
humidity sensor die, output goes to a low rail condition
indicating no humidity.
FACTORY CALIBRATION DATA
HIH-4010/4020/4021 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
HIH-4010-003
Channel
92
Wafer
030996M
MRP
337313
Calculated values at 5 V
0.958 V
V
OUT
at 0% RH
3.268 V
V
OUT
at 75.3% RH
Linear output for 3.5% RH
accuracy at 25 °C
Zero offset
0.958 V
Slope
30.680 mV/%RH
Sensor RH
(V
OUT
- zero offset)/slope
(V
OUT
- 0.958)/0.0307
Ratiometric response for
0% RH to 100% RH
V
OUT
V
SUPPLY
(0.1915 to 0.8130)
2
www.honeywell.com/sensing
For HIH-4010-001/002/003/004 catalog listings only.
For HIH-4020-001/002/003/004 and HIH-4021-001/002/003/
004 catalog listings only.
Humidity Sensors
FIGURE 1. OPERATING ENVIRONMENT (Non-condensing environment for HIH-4010 and HIH-4020 catalog listings only.)
FIGURE 2. STORAGE ENVIRONMENT (Non-condensing environment for HIH-4010 and HIH-4020 catalog listings only.)
Relative Humidity
Honeywell Sensing and Control
3
HIH-4010/4020/4021 Series
FIGURE 3. TYPICAL OUTPUT VOLTAGE VS RELATIVE HUMIDITY (At 25
ºC and 5 V.)
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
2
0C
70 C
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. HIH-4010 MOUNTING DIMENSIONS (For reference only. mm/[in])
FIGURE 6. HIH-4020 MOUNTING DIMENSIONS (For reference only. mm/[in])
Honeywell Sensing and Control
5
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