HM1500LF – Relative Humidity Module
HM1500LF HPC062_E www.meas-spec.com April 2008
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• Small size product
• Product free from Lead, Cr(6+), Cd and Hg
• Humidity calibrated within +/-2% @55%RH
• Typical 1 to 3.6 V olt DC output for 0 to 100% RH at
5Vdc supply
• Ratiometric to voltage supply from 4.75Vdc to 5Vdc
• Patented solid polymer structure
DESCRIPTION
Based on the rugged HS1101LF capacitive humidity sensor, HM1500LF is a dedicated humidity transducer
designed for OEM applications where a reliable and accurate measurement is needed. Direct interface with a
micro-controller is made possible with the module’s linear voltage output.
FEATURES APPLICATIONS
• Full interchangeability
•
Industrial
• High reliability and long term stability
•
Process control
• Not affected by water immersion • …
• Very low temperature dependence
• Suitable for 3 to 10 Vdc supply voltage
Humidity Sensor Specific features
Instantaneous de-saturation after long periods in
saturation phase
Fast response time
Part could be washed with distilled water
(1) Soldering temperature profiles available on request / contact us at humidity.application@meas-spec.com
PERFORMANCE SPECS
MAXIMUM RATINGS
Ratings Symbol Value Unit
Storage Temperature Tstg -30 to 70 °C
Storage Humidity RHstg 0 to 100 % RH
Supply Voltage (Peak) Vs 10 Vdc
Humidity Operating Range RH 0 to 100 % RH
Temperature Operating Range Ta -40 to 60 °C
HM1500LF – Relative Humidity Module
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ELECTRICAL CHARACTERISTICS
(Ta=23°C, Vs=5Vdc +/-5%, RL>1MΩ unless otherwise stated)
*Maximum power supply ramp up time to Vcc should be less than 4ms.
TYPICAL PERFORMANCE CURVES
HUMIDITY SENSOR
• Measurement conditions
HM1500LF is specified for accurate measurements within 10 to
95% RH.
Excursion out of this range (<10% or >95% RH, including
condensation) does not affect the reliability of HM1500LF
characteristics.
Dedicated HM15XX products are available for extreme RH
conditions (as HM1520 for low dewpoints). Consult MEAS-
France for further information.
• Modeled Signal Output
Humidity Characteristics Symbol Min Typ Max Unit
Humidity Measuring Range RH 0 100 %RH
Relative Humidity Accuracy (10 to 95% RH) RH +/-3 +/-5 %RH
Supply Voltage (regulated at 5Vdc*) Vs 5 Vdc
Nominal Output @55%RH (at 5Vdc) Vout 2.42 2.48 2.54 V
Current consumption Ic 1.4 2 mA
Temperature Coefficient (10 to 50°C) Tcc - 0.05 -0.1 %RH/°C
Average Sensitivity from 33% to 75%RH ΔVout/ΔRH +26 mV/%RH
Sink Current Capability (RL=33kΩ) Is 150 µA
Humidity Hysteresis +/-1 %RH
Time Constant (at 63% of signal, static) 33% to 75%RH τ 10 s
Warm up time (electronic) tw 150 ms
Humidity resolution 0.4 %RH
Output Impedance Z 70 Ω
RH (%) Vout (mV) RH (%) Vout (mV)
10 1325 55 2480
15 1465 60 2605
20 1600 65 2730
25 1735 70 2860
30 1860 75 2990
35 1990 80 3125
40 2110 85 3260
45 2235 90 3405
50 2360 95 3555
HM1500LF – Relative Humidity Module
HM1500LF HPC062_E www.meas-spec.com April 2008
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LINEAR EQUATION:
Vout = 25.68RH + 1079
RH = 0.03892 Vout - 42.017
(With Vout in mV and RH in %)
POLYNOMIAL EQUATION:
Vout = 9E-4 RH3- 1.3E-1 RH2 + 30.8 15 R H + 1030
RH = -1,91E-9 Vout 3 + 1,33E-5 Vout 2 + 9,56E-3 Vout - 2,16E+1
(With V out in mV and RH in %)
• Error Budget at 23°C
TEMPERATURE COMPENSATION:
(With T : Temperature in °C and RH: Relative Humidity in %)
QUALIFICATION PROCESS
RESISTANCE TO PHYSICAL AND CHEMICAL STRESSES
• HM1500LF has passed through qualification processes of MEAS-France including vibration, shock, storage,
high temperature and humidity, ESD.
• Additional tests under harsh chemical conditions demonstrate good operation in presence of salt
atmosphere, SO2 (0.5%, H2S (0.5%), 03, NOx, NO, CO, CO2, Softener, Soap, Toluene, acids (H2SO4,
HNO3, HCI), HMDS, Insecticide, Cigarette smoke, this is not an exhaustive list.
• HM1500LF is not light sensitive.
SPECIFIC PRECAUTIONS
• HM1500LF is protected against reversed polarity.
• If you wish to use HM1500LF in a chemical atmosphere not listed above, consult us.
(
)
05.023
×
−
+
=
T
RH
RH
actualatTcompensaed
HM1500LF – Relative Humidity Module
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PACKAGE OUTLINE
ORDERING INFORMATION
HPP805A031 (MULTIPLE PACKAGE QUANTITY OF 10 PIECES)
HM1500LF – HUMIDITY ANALOG VOLTAGE OUTPUT
Sample kit of HM1500LF is available through MEAS-France web site:
www.meas-spec.com
Customer Service contact details
Measurement Specialties, Inc.
105 av. du Général Eisenhower
BP 23705 31037 TOULOUSE CEDEX 1
FRANCE
Tél: +33 (0) 561 194 848
Fax:+33 (0) 561 194 553
Sales: humidity.sales@meas-spec.com
Dim Min (mm) Max (mm)
A 9.75 10.25
B 4.00 4.50
C 53 55
D 10.9 11.4
E* 200 250
Wire Color Function
W1 White Ground
W2 Blue Supply Voltage
W3 Yellow Humidity Output Voltage
* Specific lenght available on request
HM1500LF – Relative Humidity Module
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Revision Comments Who Date
C Power supply ramp up time specification added C.EISMANN September 06
D HPP Number updated, RoHS logo added D. LE GALL September 07
E Standardized datasheet format and Current consumption
lowering updated D. LE GALL April 08
The information in this sheet has been carefully reviewed and is believed to be accurate; however, no responsibility is assumed for
inaccuracies. Furthermore, this information does not convey to the purchaser of such devices any license under the patent rights to the
manufacturer. Measurement Specialties, Inc. reserves the right to make changes without further notice to any product herein. Measurement
Specialties, Inc. makes no warranty, representation or guarantee regarding the suitability of its product for any particular purpose, nor does
Measurement Specialties, Inc. assume any liability arising out of the application or use of any product or circuit and specifically disclaims
any and all liability, including without limitation consequential or incidental damages. Typical parameters can and do vary in different
applications. All operating parameters must be validated for each customer application by customer’s technical experts. Measurement
Specialties, Inc. does not convey any license under its patent rights nor the rights of others.
