HM1520LF – Relative Humidity Module
•
•
•
•
•
•
Tubular form for through wall mounting
Product free from Lead, Cr(6+), Cd and Hg
Calibrated, linear voltage for easy electronic interface
Typical 1 to 1.6 Volt DC output for 0 to 20% RH at
5Vdc supply
Ratiometric to voltage supply
Patented solid polymer structure
DESCRIPTION
Based on the rugged HS1101LF capacitive humidity sensor, HM1520LF is a dedicated humidity transducer
designed for measurements at low humidity. Direct measurement of dew point or water concentration can be
easily obtained in really cost effective conditions. Direct interface with a micro-controller is made possible with
the module’s linear voltage output.
FEATURES
•
•
•
Full interchangeability
Not affected by water immersion
Controlled temperature dependency
APPLICATIONS
•
•
…
Low Humidity
Meteorology
Humidity Sensor Specific features
Not affected by long period at low humidity values
High resistance to chemical
Fast response time
PERFORMANCE SPECS
MAXIMUM RATINGS
Ratings
Storage Temperature
Storage Humidity
Supply Voltage (Peak)
Humidity Operating Range
Temperature Operating Range
Symbol
Tstg
RHstg
Vs
RH
Ta
Value
-30 to 70
0 to 100
10
0 to 100
-40 to 60
Unit
°
C
% RH
Vdc
% RH
°
C
Peak conditions:
less than 10% of the operating time.
HM1520LF HPC091_C
www.meas-spec.com
1/6
October 2012
HM1520LF – Relative Humidity Module
ELECTRICAL CHARACTERISTICS
(Ta=23° Vs=5Vdc +/-5%, R
L
>1M
C,
unless otherwise stated)
Humidity Characteristics
Humidity Measuring Range / Ta -40 to 60°
C
Relative Humidity Accuracy (1 to 20% RH) at 23°
C
Relative Humidity Accuracy @55% RH at 23°
C
Supply Voltage (regulated at 5Vdc*)
Nominal Output @10%RH (Ta = 25°
C)
Current Consumption
Temperature Coefficient (10 to 50° and 1 to 20% RH )
C
Humidity Average Sensitivity from 5% to 10%RH
Sink Current Capability (R
L
=33k )
Humidity Hysteresis
Time Constant (at 63% of signal, static) 5% to 10%RH
Warm Up Time (electronic)
Humidity Resolution
Long Term Stability
Output Impedance
*Maximum power supply ramp up time to Vcc should be less than 4ms.
Symbol
RH
RH
RH
Vs
Vout
Ic
Tcc
∆Vout/∆RH
Is
τ
tw
Min
0
Typ
+/-2
+/-5
5
1.24
1.4
- 0.05
+26
Max
100
+/-3
5.25
1. 31
2
-0.1
150
+/-1
10
4.75
1.17
Z
150
0.4
0.5
70
Unit
%RH
%RH
%RH
Vdc
V
mA
%RH/°
C
mV/%RH
µA
%RH
s
ms
%RH
%RH/yr
TYPICAL PERFORMANCE CURVES
HUMIDITY SENSOR
•
HM1520LF Preliminary Specification when used from 1 to 30% RH
•
•
Those equations can be used above 30% RH and allow to obtain an over all accuracy as described in page
4 of this document in all humidity measuring range.
Temperature (in the range 0 to 50° does not affec t HM1520LF measurement when used from 1% to 30%
C)
RH. No temperature compensation is required.
www.meas-spec.com
2/6
October 2012
HM1520LF HPC091_C
HM1520LF – Relative Humidity Module
•
Signal output from 1% to 20% RH at 23°
C
RH (%)
Vout (mV)
RH (%)
Vout (mV)
1
2
3
4
5
6
7
8
9
10
1013
11
1269
1038
12
1294
1064
13
1320
1089
14
1346
1115
15
1371
1141
16
1397
1166
17
1422
1192
18
1448
1217
19
1474
1243
20
1499
With Vs = 5.0 Volts DC
Calibration data are
traceable to NIST
standards through CETIAT laboratory.
IMPORTANT NOTICE : HM1520LF is based on HS1101LF capacitive sensor and thus is fully useable on a
large range of relative humidity (1% to 99% RH). In that range, HM1520LF presents a typical accuracy of
+/-5% RH at 55% RH.)
However HM1520LF is a dedicated module for humidity measurements at low Relative Humidity levels.
Thus, HM1520LF is also well adapted to measure water concentrations (ppm) or low dew points when
associated with an ambient temperature probe.
HM1520LF features an optimized accuracy for
water concentration below 6000 ppm water or 0°C dew point
at 23°
(equivalent to 20% RH).
C
•
Typical Output of HM1520LF when measuring water concentration at ambient temperature of 23°C
ppm
Vout (mV)
ppm
Vout (mV)
275
1013
3025
1269
550
1038
3300
1294
825
1064
3570
1320
1100
1089
3850
1346
1375
1115
4120
1371
1650
1141
4395
1397
1925
1166
4670
1422
2200
1192
4945
1448
2470
1217
5220
1474
2750
1243
5495
1499
ppm
water
= 10.75 V
out
- 10615 with V
out
in mV
•
Typical Output of HM1520LF when measuring dew point at ambient temperature of 23°
C
DP (°
C)
Vout (mV)
DP (°
C)
Vout (mV)
-36
1013
-9
1269
-29
1038
-7.8
1294
-24
1064
-6.8
1320
-21
1089
-5.8
1346
-18.5
1115
-4.9
1371
-16
1141
-4.1
1397
-14.5
1166
-3.2
1422
-13
1192
-2.5
1448
-11.5
1217
-1.6
1474
- 10
1243
-1.1
1499
HM1520LF HPC091_C
www.meas-spec.com
3/6
October 2012
HM1520LF – Relative Humidity Module
•
Accuracy of HM1520LF when used from 1% to 95% RH
QUALIFICATION PROCESS
RESISTANCE TO PHYSICAL AND CHEMICAL STRESSES
•
•
•
HM1520LF 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.
HM1520LF is not light sensitive.
SPECIFIC PRECAUTIONS
•
•
HM1520LF is protected against reversed polarity.
If you wish to use HM1520LF in a chemical atmosphere not listed above, consult us.
HM1520LF HPC091_C
www.meas-spec.com
4/6
October 2012
HM1520LF – Relative Humidity Module
PACKAGE OUTLINE
Dim
A
B
C
D
Min (mm)
9.75
4.00
53
10.9
200
Max (mm)
10.25
4.50
55
11.4
250
E*
* Specific lenght available on request
Wire
W1
W2
W3
Color
White
Blue
Yellow
Function
Ground
Supply Voltage
Humidity Output Voltage
ORDERING INFORMATION
HPP805C031 (MULTIPLE PACKAGE QUANTITY OF 10 PIECES)
HM1520LF – HUMIDITY ANALOG VOLTAGE OUTPUT MODULE
Sample kit of HM1520LF is available through MEASUREMENT SPECIALTIES web site:
http://www.meas-spec.com/humidity-sensors.aspx
Customer Service contact details
Measurement Specialties, Inc - MEAS France
Impasse Jeanne Benozzi
CS 83 163
31027 Toulouse Cedex 3
FRANCE
Tél: +33 (0)5 820 822 02
Fax: +33(0)5 820 821 51
Sales:
humidity.sales@meas-spec.com
HM1520LF HPC091_C
www.meas-spec.com
5/6
October 2012
京公网安备 11010802033920号
EEWORLD
