Vaisala HUMICAP HMW90 SERIES Dokumentacja Pobierz pdf (Strona 17)

511

HUMIDITY

WE MAKE IT EASY.

kele.com 888-397-5353 USA

March 2014

2% WALL, DUCT AND OSA HUMIDITY TRANSMITTERS

H_20K SERIES

Accuracy 2% RH @ 73°F (23°C) from 5% to

90% RH; (0-5% & 90%-100%)

add 3%

Stability 0.5% drift per year

Thermal Effect 0.05% per °F

Supply Voltage 9.5-28 VDC

Signal Output 4-20 mA, thermistor, RTD

Maximum Output

Impedance 725Ω @ 24VDC

(Supply voltage - 9.5V) / 0.02

Measurement Range

RH 0-100%

Temperature -20° to 140°F (-29° to 60°C)

(see ordering information)

Sensor Protection

(Duct and OSA) Sintered ﬁlter

Operating Humidity 0-100% RH non-condensing

Operating Temperature -20° to 158°F (-29° to 70°C)

Enclosure

Room White plastic

Duct Weather resistant cast aluminum

Wiring Terminations Terminal block (22 to 16 AWG)

Weight

Room 0.3 lb (0.09 kg)

Duct 1.14 lb (0.52 kg)

OSA 1.2 lb (0.54 kg)

Approvals RoHs

Warranty 1.5 year

DESCRIPTION

The Kele Series H_20K Humidity Transmitters have been

speciﬁcally designed for use in HVAC/BAS applications.

These instruments measure relative humidity from 5% to

90% RH with 2% accuracy and produce a two wire 4-20 mA

linear output. All are available with an optional passive RTD or

thermistor. The duct and OSA versions may also be ﬁtted with

a 4-20mA temperature transmitter.

FEATURES

• 2% accuracy (5% to 90%)

• Two-wire, 4-20 mA RH output

• Optional temperature thermistor

• Optional temperature RTD

• Optional temperature 4-20mA (duct or OSA)

APPLICATION

The temperature compensated circuitry converts the relative

humidity into a 4-20 mA signal. The optional temperature

sensors, RTDs or thermistors, offer direct connection to most

automation systems. On duct and OSA units, an optional 4-20

mA temperature transmitter may also be employed and is

rangeable from -30° to 250°F (-34° to 121°C).

DIMENSIONS

SPECIFICATIONS

HW20K

4.50

(11.43)

3.23

(8.20)

(cm)

2.875

(7.3)

4.625

(11.7)

2.13

(5.4)

7.0

(17.8)

0.25

(0.64)

HD20K

Foam gasket

5.25

(13.3)

4.43

(11.3)

2.88

(7.30)

2.125

(5.4)

1.25

(3.18)

HO20K

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