RHT-2-I-7-O/A [AMPHENOL]

Space, Duct, and Outside Air Configurations;


型号：	RHT-2-I-7-O/A
厂家：	Amphenol
描述：	Space, Duct, and Outside Air Configurations
文件：	总8页 (文件大小：183K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

RH/RHT Series

Relative Humidity and

Temperature Transmitters

The Relative Humidity (RH) and Temperature

Features

transmitters are designed for continuous

monitoring of relative humidity (RH) or relative

humidity and temperature (RHT). They provide

accurate and reliable measurement for building

automation and environmental control systems.

The units feature very low proﬁle sensor

enclosures that are virtually unnoticeable in most

installations.

•ꢀ Space% Duct% and Outside Air Conﬁgurations

•ꢀ Durable Industrial Enclosures

•ꢀ Low Proﬁle

•ꢀ Compact

The RH and RHT transmitters are available

with ±±2% ±ꢀ2% and ±ꢁ2 RH accuracy (±ꢂ2

to 9ꢁ2 RH). For monitoring and controlling in

critical environments% the units can be precision

calibrated to 12 accuracy within a speciﬁed RH

range.

•ꢀ Replaceable% Plug-in Bulk Polymer Resistance

RH Sensor

•ꢀ Resistant to Contamination

•ꢀ Temperature Compensation

The RH and RHT transmitters provide a linear

output of 4-±ꢂ mA corresponding to ꢂ to 1ꢂꢂ2RH.

The RHT transmitter also provides a 4-±ꢂ mA

signal corresponding to any of the selected

standard temperature ranges speciﬁed.

Amphenol

Advanced Sensors

RH/RHT Series Specifications

Sensor Enclosure

The relative humidity and temperature sensors are

housed in heavy duty% compact% locking enclosures.

Enclosures may be removed and painted% which further

helps blend them into any environment.

Sensor

The RH sensor incorporates a bulk polymer resistive

element. The polymer is impervious to most

contaminants and% since it is a bulk resistance device%

surface contamination such as dust will not alter the

accuracy of the readings. Imbedded in the polymer is

an interdigitated grid which senses resistance change

as the polymer absorbs or emits molecules of water.

Transmitter

The electronics are contained in a rugged pressure-

Mounting Template

cast aluminum weatherproof housing designed

for maximum protection. Continuous temperature

compensation adjusts for temperature-induced change

in the RH sensor output. The compensation provides

high measurement accuracy over the entire operating

range of the instrument.

RH and RHT Duct Mount

RH/RHT Series Specifications

Dimensions and Mounting

Mounting Template

(Side View)

RH and RHT Outside Air Mount

Mounting Template

RH Space Mount

RH/RHT Series Wiring

Wiring Guidelines

Output: Temperature (Optional)

Outputs: Relative Humidity

The temperature option (if ordered) is a separate circuit

board but mounted in the same housing along with the

relative humidity transmitter.

4·20 mA Current Output

The 4-±ꢂ mA transmitters will provide a linear

proportional signal with 4 mA corresponding to ꢂ2

RH and ±ꢂ mA to 1ꢂꢂ2 RH. These are loop powered

devices; therefore% only two wires are required.

The 4·±ꢂ mA transmitters output is linear and

proportional to the range speciﬁed when the

transmitter was ordered. The low range temperature

(4 mA) is marked on the ZERO pot and the high range

temperature (±ꢂ mA) is marked on the SPAN pot.

Standard range is - ±ꢂ° to 14ꢂ°F (this range is supplied

when no range is speciﬁed at time of ordering).

0-5 Volt Voltage Output

The ꢂ to ꢁ volt transmitters provide a linear proportional

output at terminal “O” with ꢂ volts equivalent to ꢂ2 RH

and ꢁ volts to 1ꢂꢂ2 RH.

The voltage output transmitters can be wired as a

three wire transmitter or as a four wire transmitter to

eliminate the effects of wire length. The output voltage

is with respect to Terminals “N” (power supply return)

and/or “G” (signal ground) which are common at the

transmitter.

The temperature transmitters are entirely separate

circuits from the RH transmitters. Transmitters are

loop powered devices. Therefore% only two wires are

required. One wire may be common with the RH

transmitter.

Wiring

Wiring for the transmitter should be twisted pair(s)

16·±± AWG approximately ± turns per inch. In

installations near electric motors or sensitive electronic

equipment% use shielded cable. Wiring should be run

through conduit using the 1/±” EMT compression ﬁtting

supplied on the unit.

RH/RHT Series Wiring

Wiring Diagram Current Unit

Wiring Diagram Voltage Unit

RH/RHT Series Specifications

Humidity

Sensing Element

Operating Range

Resistance change of bulk polymer sensor

RH Sensor: ꢂ2-992% RH% non·condensing.

-4ꢂ°F to +17ꢂ°F (-4ꢂ°C to +76°C)

Electronics: ꢂ2-9ꢁ2 RH% non.condensing.

-4ꢂ°F to +1ꢀꢂ°F (-4ꢂ°C to +ꢁ4°C)

Performance

Accuracy at 77°F (25°C)

±±2 RH% ±ꢂ-9ꢁ2 RH

±ꢀ2 RH%% ±ꢂ-9ꢁ2 RH

Max. Air Velocity

1ꢂ%ꢂꢂꢂ ft/min

±ꢁ2 RH% ±ꢂ -9ꢁ2 RH

including hysteresis% linearity and repeatability

Output Range

±·wire. isolated loop% powered 4-±ꢂ mA% ꢂ-1ꢂꢂ2 RH

(standard)

Mechanical: Case Material

Space: ABS Flame Retardant

Duct: Galvanized Steel

Outside Air: Pressure Cast Aluminum and Galvanized

Steel

Adjustment

Zero: ±±ꢂ2. non·interactive

Span: ±1ꢂ2% non·interactive

Long Term Stability: Less than 1 2 drift/year typical

Mounting Conﬁgurations

Space% Duct% Outside Air

Power

Temperature Effect

Less than ꢂ.ꢂ62 per °F (ꢂ.112 per °C)

Supply Voltage

1±-ꢀ6 VDC

Sensitivity

ꢂ.12 RH

Max Load

W = Supply · 1ꢂ VDC

ꢂ.ꢂ± A

Repeatability

ꢂ.ꢁ2 RH

Storage Temperature

-8ꢁ°F to +1ꢁ8°F (-6ꢁ°C to +7ꢂ°C)

Linearity

See Accuracy

Hysteresis

Less than 12

Sensor Interchangeability

±ꢀ2 nominal

RH/RHT Series Specifications

Temperature

Sensing Element

Optional

Platinum RTD% 4 wire measurement

ꢂ°F to +1ꢁꢂ°F (-18°C to +66°C)

ꢂ°F to +1ꢂꢂ°F (-18”C to +ꢀ8°C)

+ꢀ±°F to +1ꢀ±°F (ꢂ°C to +ꢁꢁ°C)

+ꢁꢂ°F to +1ꢀꢂ°F (+7°C to +ꢁ4°C)

-4ꢂ°F to + 14ꢂ°F (-4ꢂ”C to +6ꢂ°C)

Custom range

Performance

Accuracy at 77°F (25”C)

±ꢂ.ꢁ°F (±ꢂ.ꢀ°C)

Adjustment

Temperature Effect

Less than ꢂ.ꢂ12 per °F (ꢂ.ꢂ±2 per°C)

Zero: ±1ꢂ2. non·interactive

Span: ±1ꢂ2. non-interactive

Long Term Stability: Less than 12 drift per year% typical

Sensitivity

Humidity affects you and your operations. Our local

representative Is ready to help in your application. Call

to discuss the proper selection of a humidity device

from the world’s largest selection.

ꢂ.12 RH

Repeatability:

ꢂ.12 RH

Speciﬁcations are subject to change without notice.

Linearity

Better than ꢂ.1 2

Hysteresis

Less than ꢂ.ꢂ12

Sensor Interchangeability

±ꢂ.ꢁ°F (±ꢂ.ꢂꢀ°C)

Output Ranges

4·±ꢂ mA

- ±ꢂ°F to + 14ꢂ°F (-±9°C to +6ꢂ°C)

Ordering Information

Model RH

Code

with Temperature

Code Accuracy

±2

ꢀ2

ꢁ2

Code Output

4 - ±ꢂ mA Current

ꢂ-ꢁ Volltage DC

Code

Temperature Channel Range (optional)

-±ꢂ°F to 14ꢂ°F (Standard)

ꢂ°F to 1ꢁꢂ°F

ꢂ°F to 1ꢂꢂ°F

+ꢀ±°F to +1ꢀ±°F

+ꢁꢂ°F to +1ꢀꢂ°F

-4ꢂ°F to +14ꢂ°F

Custom Range

Code Mounting Conﬁguration

Space

Duct

O/A

Outside Air

Model RH

Example 1: To specify an RH transmitter. order: RH-2-I-S.

Exomple ±: To specify an RH transmitter with optional temperature

sensor with standard range (-±ꢂ°F to + 14ꢂ°F)% order: RHT-2-I-S.

Options

Special calibration to ± 12 accuracy (±ꢂ2 RH span in ±ꢂ2·- 9ꢁ2 RH range)

www.telaire.com

www.amphenol-sensors.com

Other company names and product names used in this document are the registered trademarks or

trademarks of their respective owners.

Amphenol

Advanced Sensors

AAS-920-509A-05/2014

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