SparkFun SEN-09569

Reference Designs (3)

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Datasheet
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U
Lead Free
???
Octopart Part Number
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1
GND
2
OUT
3
5V

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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.
The HIH-4030/4031 Series delivers instrumentation-quality RH
(Relative Humidity) sensing performance in a competitively
priced, solderable SMD.
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 RH sensor uses 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
condensation, dust, dirt, oils and common environmental
chemicals.
Sample packs are available. See order guide.
FEATURES
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
POTENTIAL APPLICATIONS
Refrigeration equipment
HVAC (Heating, Ventilation and Air Conditioning)
equipment
Medical equipment
Drying
Metrology
Battery-powered systems
OEM assemblies
HIH-4030/31 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 a year)
±1.2
% RH
2
Stability (at 50% RH in a year)
±0.5
% RH
3
Voltage supply 4
5.8 Vdc
4
Current supply
200 500 μA
Voltage output (1
st
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
-4
mV/ºC
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:
1. Can only be achieved with the supplied slope and offset. For
HIH-4030/31-003 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-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
V
OUT
at 0% RH
V
OUT
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
(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)
Humidity Sensors
Honeywell Sensing and Control 3
FIGURE 1. OPERATING ENVIRONMENT (Non-condensing environment for HIH-4030 catalog listings only.)
FIGURE 2. STORAGE ENVIRONMENT (Non-condensing environment for HIH-4030 catalog listings only.)
0%
10%
20%
30%
50%
40%
60%
70%
80%
90%
100%
-40 20-20 0
40 60 80
100
120 140
Temperature ºC
Recommended storage zone
HIH-4030/31 Series
4 www.honeywell.com/sensing
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
Relative Humidity (%)
Output Voltage (Vdc)
0 C
70 C