HPP800A001 Ver la hoja de datos (PDF) - Humirel

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componentes Descripción

Fabricante

HPP800A001

RELATIVE HUMIDITY SENSOR

Humirel 

2 TECHNICAL DATA

CHARACTERISTICS (CONT’D)

Typical response curve

of HS 1100/HS 1101 in humidity

205

200

195

190

Calibration data are traceable to NIST

185

standards through CETIAT laboratory.

180

Measurement frequency : 10kHz

Ta = 25°C

175

170

165

160

0

10

20

30

40

50

60

70

% RH

80

90

100

Polynomial response : C(pf)=C@55%*(1.2510-7RH3-1.3610-5RH2+2.1910-3RH+9.010-1)

Measurement frequency influence

RH in % RH

In this data sheet, all capacitance measurements are @ 10kHz. However, the sensor can operate without restriction from

5kHz to 100kHz. To calculate the influence of frequency on capacitance measurements :

C@fkHz=C@10kHz(1.027-0.01185Ln(fkHz))

Polarization

In order to get a better reproducibility during measurements, always connect the case of the header (pin 2) to the ground

of the circuit.

The case of the header is located on the opposite side of the tab.

Soldering instructions : see the Application Note HPC007

PROPORTIONAL VOLTAGE OUTPUT CIRCUIT

Internal Block Diagram

Reference Oscillator

Sensor Oscillator

L.P. Filter

Gain

Vout

Vout=Vcc*(0.00474*%RH+0.2354)

for 5 - 99% RH

Typical temperature coefficient :

+0.1% RH/°C - From 10 to 60°C

RH

0

Voltage (V)

-

HPC001 Rev. 7 June 2002

DEMO BOARD AVAILABLE ON REQUEST (REF HM1510)

Typical Characteristics for Voltage Output Circuit

At Vcc 5V - 25°C

10

20

30

40

50

60

70

80

90

100

1.41

1.65

1.89

2.12

2.36

2.60

2.83

3.07

3.31

3.55

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