HIH-4030/31 Series
Humidity Sensors
DESCRIPTION
Honeywell has expanded our HIH Series to include an SMD
(Surface Mount Device) product line: the new HIH 4030/4031.
The HIH 4030/4031 complements our existing line of non-SMD
humidity sensors. SMD packaging on tape and reel allows for
use in high volume, automated pick and place manufacturing,
eliminating lead misalignment to printed circuit board through-
hole.
The HIH-4030/4031 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-4030/4031 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
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Tape and reel packaging allows for use in high volume pick
and place manufacturing (1,000 units per tape and reel)
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
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POTENTIAL APPLICATIONS
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Refrigeration equipment
HVAC (Heating, Ventilation and Air Conditioning)
equipment
Medical equipment
Drying
Metrology
Battery-powered systems
OEM assemblies
Sample packs are available. See order guide.
The sensing element's multilayer construction provides
excellent resistance to most application hazards such as
condensation, dust, dirt, oils and common environmental
chemicals.
The RH sensor uses a laser trimmed, thermoset polymer
capacitive sensing element with on-chip integrated signal
conditioning.
The HIH-4030 is a covered integrated circuit humidity sensor.
The HIH-4031 is a covered, condensation-resistant, integrated
circuit humidity sensor that is factory-fitted with a hydrophobic
filter allowing it to be used in condensing environments
including industrial, medical and commercial applications.
The HIH-4030/4031 Series delivers instrumentation-quality RH
(Relative Humidity) sensing performance in a competitively
priced, solderable SMD.
HIH-4030/31 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)
-3.5
–
+3.5
% RH
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 a year)
±1.2
% RH
–
–
Stability (at 50% RH in a year)
±0.5
% RH
–
–
Voltage supply
4
5.8
Vdc
–
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 temp. coefficient at 50% RH, 5 V
mV/ºC
–
-4
–
–
Operating temperature
-40[-40]
See Figure 1.
85[185]
ºC[ºF]
–
Operating humidity (HIH-4030)
0
See Figure 1.
100
% RH
5
Operating humidity (HIH-4031)
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. Can only be achieved with the supplied slope and offset. For
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Sensor is ratiometric to supply voltage.
HIH-4030/31-003 catalog listings only.
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Extended exposure to >90% RH causes a reversible
2. Includes testing outside of recommended operating zone.
shift of 3% RH.
3. Includes testing for recommended operating zone only.
•
Sensor is light sensitive. For best performance, shield
4. Device is calibrated at 5 Vdc and 25
ºC.
sensor from bright light.
5. Non-condensing environment. When liquid water falls on the
humidity sensor die, output goes to a low rail condition
indicating no humidity.
FACTORY CALIBRATION DATA
HIH-4030/31 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-4030-003
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
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