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).
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.
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.
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
HIH-4010/4020/4021 Series
2 www.honeywell.com/sensing
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 in 1 year) – ±1.2 – % RH 2
Stability (at 50 %RH in 1 year) – ±0.5 – % RH 3
Voltage supply 4 – 5.8 Vdc 4
Current supply – 200 500 µA –
Voltage output (1st order curve fit) VOUT=(VSUPPLY)(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 – -4 – mV/ºC –
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:
1. For HIH-4010/20/21-003/004 catalog listings only.
2. Includes testing outside of recommended operating zone.
3. Includes testing for recommended operating zone only.
4. Device is calibrated at 5 Vdc and 25 ºC.
5. Non-condensing environment. When liquid water falls on the
humidity sensor die, output goes to a low rail condition
indicating no humidity.
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-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
VOUT at 0% RH
VOUT at 75.3% RH
0.958 V
3.268 V
Linear output for 3.5% RH
accuracy at 25 °C
Zero offset
Slope
Sensor RH
0.958 V
30.680 mV/%RH
(VOUT - zero offset)/slope
(VOUT - 0.958)/0.0307
Ratiometric response for
0% RH to 100% RH
VOUT
VSUPPLY (0.1915 to 0.8130)
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
Honeywell Sensing and Control 3
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
HIH-4010/4020/4021 Series
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FIGURE 3. TYPICAL OUTPUT VOLTAGE VS RELATIVE HUMIDITY (At 25 ºC and 5 V.)
0.5
1
1.5
2
2.5
3
3.5
4
0 20406080100
Relative Humidity (%RH)
Output Voltage (Vdc)
Sensor Response
Sensor Response
Best Linear Fit
FIGURE 4. TYPICAL OUTPUT VOLTAGE (BFSL) VS RELATIVE HUMIDITY (At 0 ºC, 70 ºC and 5 V.)
0
0.5
1
1.5
2
2.5
3
3.5
4
4.5
0 102030405060708090100
Rela tive Humidity (%)
Output Voltage (Vdc)
0 C
70 C
Humidity Sensors
Honeywell Sensing and Control 5
FIGURE 5. HIH-4010 MOUNTING DIMENSIONS (For reference only. mm/[in])
FIGURE 6. HIH-4020 MOUNTING DIMENSIONS (For reference only. mm/[in])
HIH-4010/4020/4021 Series
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FIGURE 7. HIH-4021 MOUNTING DIMENSIONS (For reference only. mm/[in])
Humidity Sensors
Honeywell Sensing and Control 7
FIGURE 8. TYPICAL APPLICATION CIRCUIT
ORDER GUIDE
Catalog
Listing
Description
HIH-4010-001 Integrated circuit humidity sensor, 2,45 mm [0.100 in] lead pitch SIP
HIH-4010-002 Integrated circuit humidity sensor, 1.27 mm [0.050 in] lead pitch SIP
HIH-4010-003 Integrated circuit humidity sensor, 2,45 mm [0.100 in] lead pitch SIP, calibration and data printout
HIH-4010-004 Integrated circuit humidity sensor, 1.27 mm [0.050 in] lead pitch SIP, calibration and data printout
HIH-4020-001 Covered integrated circuit humidity sensor, 2,45 mm [0.100 in] lead pitch SIP
HIH-4020-002 Covered integrated circuit humidity sensor, 1.27 mm [0.050 in] lead pitch SIP
HIH-4020-003 Covered integrated circuit humidity sensor, 2,45 mm [0.100 in] lead pitch SIP, calibration and data printout
HIH-4020-004 Covered integrated circuit humidity sensor, 1.27 mm [0.050 in] lead pitch SIP, calibration and data printout
HIH-4021-001 Covered, filtered integrated circuit humidity sensor, 2,45 mm [0.100 in]lead pitch SIP
HIH-4021-002 Covered, filtered integrated circuit humidity sensor, 1.27 mm [0.050 in] lead pitch SIP
HIH-4021-003 Covered, filtered integrated circuit humidity sensor, 2,45 mm [0.100 in] lead pitch SIP, calibration and data
printout
HIH-4021-004 Covered, filtered integrated circuit humidity sensor, 1.27 mm [0.050 in] lead pitch SIP, calibration and data
printout
FURTHER 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
Automation and Control Solutions
Sensing and Control
Honeywell
1985 Douglas Drive North
Minneapolis, MN 55422
www.honeywell.com/sensing
009020-1-EN IL50 GLO Printed in USA
January 2007
© 2007 Honeywell International Inc. All rights reserved.
WARNING
MISUSE OF DOCUMENTATION
• The information presented in this product sheet is for
reference only. Do not use this document as a product
installation guide.
• Complete installation, operation, and maintenance
information is provided in the instructions supplied with
each product.
Failure to comply with these instructions could result
in death or serious injury.
WARRANTY/REMEDY
Honeywell warrants goods of its manufacture as being free of
defective materials and faulty workmanship. Honeywell’s
standard product warranty applies unless agreed to otherwise
by Honeywell in writing; please refer to your order
acknowledgement or consult your local sales office for specific
warranty details. If warranted goods are returned to Honeywell
during the period of coverage, Honeywell will repair or replace,
at its option, without charge those items it finds defective. The
foregoing is buyer’s sole remedy and is in lieu of all other
warranties, expressed or implied, including those of
merchantability and fitness for a particular purpose. In no
event shall Honeywell be liable for consequential, special,
or indirect damages.
While we provide application assistance personally, through
our literature and the Honeywell web site, it is up to the
customer to determine the suitability of the product in the
application.
Specifications may change without notice. The information we
supply is believed to be accurate and reliable as of this
printing. However, we assume no responsibility for its use.
WARNING
PERSONAL INJURY
DO NOT USE these products as safety or emergency stop
devices or in any other application where failure of the
product could result in personal injury.
Failure to comply with these instructions could result
in death or serious injury.
SALES AND SERVICE
Honeywell serves its customers through a worldwide network
of sales offices, representatives and distributors. For
application assistance, current specifications, pricing or name
of the nearest Authorized Distributor, contact your local sales
office or:
E-mail: info.sc@honeywell.com
Internet: www.honeywell.com/sensing
Phone and Fax:
Asia Pacific +65 6355-2828
+65 6445-3033 Fax
Europe +44 (0) 1698 481481
+44 (0) 1698 481676 Fax
Latin America +1-305-805-8188
+1-305-883-8257 Fax
USA/Canada +1-800-537-6945
+1-815-235-6847
+1-815-235-6545 Fax
