Series-RHP-E-N

Wall Mount Humidity, Temperature & Dew Point Transmitter - Capacitive Sensor

Reduced installation cost with combined humidity/dew point and temperature sensing
Wide application environments from a large selection of temperature sensors and 2% and 3% accuracies
Reduced inventory with field selectable output

See Product Overview

Series-RHP-E-N

From ^€ 141,90

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3 Variations available

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Data Sheet

Product Overview

Applications HVAC
Current Output Range 4 to 20 mA
Dew Point Temperature Input Range -20 to 140°F, 0 to 100°F, 40 to 90°F, -4 to 140°F, Field-Selectable
Electrical Connection Screw Terminal
Enclosure Ratings IP20
Hysteresis ± 0.8%
Materials Polycarbonate
Operating Temperature, Max 140 °F
Operating Temperature, Min -40 °F
Process Temperature, Max 140 °F
Process Temperature, Min -4 °F
Relative Humidity 0 to 100% RH
Repeatability ± 0.1%
Response Time 8 s
RH Sensor Drift <0.25% RH/year
Series ID Series-RHP-E-N
Storage Temperature, Max 176 °F
Storage Temperature, Min -40 °F
Supply Power Note 4-20 mA loop powered outputs: 10-35 VDC; 0-5/10V outputs: 15-35 VDC or 15-29 VAC
Supply Power Type AC/DC
Supply Voltage 10 to 35 Vdc, 15 to 35 Vdc /15 to 29 Vac
Voltage Output Range 0 to 5 Vdc, 0 to 10 Vdc
Weight 4.4 oz

Supported Applications

The Series RHP-E/N Wall Mount Humidity/Temperature/Dew Point Transmitter is a versatile room transmitter with a well-vented housing that improves measurement accuracy. It measures humidity and dew point with a capacitive polymer sensor and temperature with either a thermistor, an RTD, or a solid-state band-gap sensor, combining several room measurements in one device to reduce installation cost and inventory.

Typical uses include building balancing and LEED validation, air economizer control, room comfort monitoring, and greenhouse monitoring. An optional LCD display shows readings locally, and a remote display is available for installations where the transmitter is not easily seen. Disconnect the power supply before installation or maintenance, and use electrostatic-discharge precautions during handling because the sensor is particularly sensitive to electric shock; avoid locations with severe shock or vibration, excessive moisture, or corrosive fumes.

Operating Conditions & Performance

Relative humidity is measured over 0 to 100% RH. Temperature is measured over -40 to 140°F (-40 to 60°C) for thermistor and RTD sensors and -20 to 140°F (-28.9 to 60°C) for the solid-state band-gap (analog) sensors. Dew point is provided over field-selectable ranges of -20 to 140°F (-28.9 to 60°C), 0 to 100°F (-17.8 to 37.8°C), 40 to 90°F (4.4 to 32.3°C), and -4 to 140°F (-20 to 60°C).

Relative humidity accuracy depends on grade: RHP-2XXX models are ±2% (10 to 90% RH @ 25°C), RHP-3XXX models are ±3% (20 to 80% RH @ 25°C), and RHP-5XXX models are ±5% (20 to 80% RH @ 25°C). Temperature accuracy is ±0.36°F @ 77°F (±0.2°C @ 25°C) with a thermistor, ±0.54°F @ 32°F (±0.3°C @ 0°C) for a DIN Class B RTD, and ±0.9°F @ 77°F (±0.3°C @ 25°C) for the analog output. Hysteresis is ±0.8%, repeatability is ±0.1% typical, and drift is less than 0.25% RH per year. Resolution is 1% RH, 0.1°F (0.1°C) for temperature, and 1°F (1°C) for dew point, with an 8 s response time.

Outputs are switch-selectable and provide two channels for humidity and solid-state temperature models. The 4-20 mA loop-powered outputs deliver 4-20 mA with switch-selectable normal or reverse output, while the voltage outputs deliver 5 mA max with switch-selectable 0-10 V/2-10 V or 0-5 V/1-5 V. Power follows the output type: 10-35 VDC for the 4-20 mA loop-powered outputs and 15-35 VDC or 15-29 VAC for the voltage outputs.

The housing is polycarbonate — white on the European style and warm gray on the North American style — and carries an IP20 rating. The North American style measures 4.50 in (114.30 mm) high, 2.80 in (71.12 mm) wide, and 1.10 in (27.96 mm) deep, while the European style measures 3.65 in (92.72 mm) by 3.56 in (90.42 mm) by 1.08 in (27.33 mm). Wiring lands on a screw terminal block, and the transmitter is CE marked and rated for storage over -40 to 176°F (-40 to 80°C).

Configuration Options

Every model follows the pattern RHP - Accuracy - Mounting Type - RH Output - Temperature Sensor/Output - Options, so a single code sets several capabilities:

Accuracy: the leading digit selects ±2%, ±3%, or ±5% relative-humidity accuracy.
Mounting type: E is a European wall mount and N is a North American wall mount, each with its own housing dimensions and color.
RH output: code 4 provides a combined 4-20 mA / 0-10 V humidity output.
Temperature sensor/output: code 0 is none, code 4 is a combined 4-20 mA / 0-10 V output, and letter codes select a passive sensor — A and B are 10K Ω thermistors (Dwyer curves A and B), C is a 3K Ω curve-C thermistor, D is a 100 Ω RTD, E is a 1K Ω RTD, and F is a 20K Ω thermistor.
Options: the -LCD option adds the local display.

Key Product Differences

This grouping of the Series RHP-E/N includes the following models:

RHP-2E40, RHP-2E40-LCD, RHP-2E44, RHP-2E44-LCD, RHP-2E4A, RHP-2E4B
RHP-2N40, RHP-2N40-LCD, RHP-2N44, RHP-2N44-LCD, RHP-2N4A, RHP-2N4B
RHP-3E40, RHP-3E40-LCD, RHP-3E44, RHP-3E44-LCD, RHP-3E4A, RHP-3E4B
RHP-3N40, RHP-3N40-LCD, RHP-3N44, RHP-3N44-LCD, RHP-3N4A, RHP-3N4B