HM1520

HM1520 Datasheet

HM1520

Part	Datasheet
HM1520	HM1520 (pdf)

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PRELIMINARY DATA SHEET TECHNICAL DATA RELATIVE HUMIDITY MODULE HM1520 Based on the rugged HS1101 humidity sensor, HM1520 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. Main features • Tubular form for through wall mounting. • Not affected by water condensation • Full interchangeability. • Typical 1 to Volt DC output for 0 to 20% RH at 5 V DC supply. • Calibrated, linear voltage for easy electronic interface. • Controlled temperature dependency • Ratiometric to voltage supply Humidity sensor specific features • No affected by long period at low humidity values. • Patented solid polymer structure. • High resistance to chemicals. • Fast response time. Maximum ratings Ratings Supply Voltage Peak Operating Range see graph below Operating Range Dew Point Operating Range in Temperature Symbol Vs RH Td Ta Value 12 0 to 100 -50 to 30 -30 to 60 Unit Vdc % RH °C °C 10,0 8,0 6,0 4,0 2,0,0 -2,0 -4,0 -6,0 -8,0 -10,0 Accuracy of HM1520 when used from 1 to 95% RH Optimized accuracy range +/- 3 to 5% RH accuracy range +/- 5 to 10% RH accuracy range Relative Humidity in % Rh TECHNICAL DATA Characteristics Vs = 5.0Vdc , RL > 1 otherwise stated Characteristics Humidity measuring range / Ta to 60°C Relative Humidity accuracy 1-20%RH at 23°C Relative Humidity accuracy at 55% RH at 23°C Voltage supply Nominal output RH = 10 % / Ta 25°C Current consumption Temperature coefficient 10 to 50 °C and 1 to 20% RH Averaged Sensitivity from 5% to 10 % RH Output Impedance Sink current capability R L = 15 kohm Humidity Hysteresis Long term stability Response time 5 to 10% RH, static, Symbol RH Vs Vout Ic Tcc Min 1 +/-2 +/-5 < +26 70 Max 99 +/- 3 Unit %RH %RH %RH V mA %RH / °C mV/%RH Ohms µA % RH %RH/yr s HM1520 Preliminary Specification when used from 1 to 30% RH 2000 1900 Vout= VS RH + 197 * 1800 1700 RH = Vout / VS - *

PDF Datasheet Preview

PRELIMINARY DATA SHEET

TECHNICAL DATA

RELATIVE HUMIDITY MODULE

HM1520

Based on the rugged HS1101 humidity sensor, HM1520 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.

Main features
• Tubular form for through wall mounting.
• Not affected by water condensation
• Full interchangeability.
• Typical 1 to Volt DC output for 0 to 20% RH at 5 V DC supply.
• Calibrated, linear voltage for easy electronic interface.
• Controlled temperature dependency
• Ratiometric to voltage supply

Humidity sensor specific features
• No affected by long period at low humidity values.
• Patented solid polymer structure.
• High resistance to chemicals.
• Fast response time.

Maximum ratings

Ratings Supply Voltage Peak Operating Range see graph below Operating Range Dew Point Operating Range in Temperature

Symbol Vs RH Td Ta

Value 12
0 to 100 -50 to 30 -30 to 60

Unit Vdc % RH °C °C
10,0 8,0 6,0 4,0 2,0,0
-2,0 -4,0 -6,0 -8,0 -10,0

Accuracy of HM1520 when used from 1 to 95% RH

Optimized
accuracy range
+/- 3 to 5% RH accuracy range
+/- 5 to 10% RH accuracy range

Relative Humidity in % Rh

TECHNICAL DATA

Characteristics Vs = 5.0Vdc , RL > 1 otherwise stated

Characteristics Humidity measuring range / Ta to 60°C Relative Humidity accuracy 1-20%RH at 23°C Relative Humidity accuracy at 55% RH at 23°C

Voltage supply

Nominal output RH = 10 % / Ta 25°C Current consumption Temperature coefficient 10 to 50 °C and 1 to 20% RH Averaged Sensitivity from 5% to 10 % RH Output Impedance Sink current capability R L = 15 kohm Humidity Hysteresis Long term stability Response time 5 to 10% RH, static,

Symbol RH Vs Vout Ic Tcc

Min 1
+/-2 +/-5 < +26 70

Max 99 +/- 3

Unit %RH %RH %RH

V mA %RH / °C mV/%RH Ohms µA % RH %RH/yr s

HM1520 Preliminary Specification when used from 1 to 30% RH
2000
1900

Vout= VS RH + 197 *
1800
1700 RH = Vout / VS - *

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Datasheet ID: HM1520 636588