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Series RHRS Outside Air Humidity Radiation Shield

Series RHPLC Wall Mount Humidity/Temperature Transmitter

Series RHP-E/N Wall Mount Humidity/Temperature/Dew Point Transmitter

Optional LCD Display

The Series RHP-E/N Wall Mount Humidity/Temperature/Dew Point Transmitter is the most versatile room transmitter on the market. The stylish housing is well vented to provide air flow across the sensor to improve measurement accuracy. The humidity and the dew point are measured using a capacitive polymer sensor that completely recovers from 100% saturation. The humidity and dew point can have either a current or voltage output, while the optional temperature output can be a current, voltage, RTD or thermistor. For models with current or voltage for the temperature output, the temperature range is field selectable.

For models with resistive thermistors or RTD outputs, click here for Resistance vs. Temperature Table.

Product Applications

Air economizers
Room comfort monitoring
Greenhouse monitoring

Ordering

Filter By

European, Wall Mount, 2% Accuracy

European, Wall Mount, 2% Accuracy, LCD

European, Wall Mount, 3% Accuracy

European, Wall Mount, 3% Accuracy, LCD

North American, Wall Mount, 2% Accuracy

North American, Wall Mount, 2% Accuracy, LCD

North American, Wall Mount, 3% Accuracy

North American, Wall Mount, 3% Accuracy, LCD

Grouped product items
Model	Description	Availability*	Price
RHP-2E40	European Wall Mount Humidity Transmitter with 2% accuracy and universal current / voltage output for RH	Less Than 1 Week*	$126.10
RHP-2E40-LCD	European Wall Mount Humidity Transmitter with 2% accuracy and universal current / voltage output for RH with LCD	Less Than 1 Week*	$192.15
RHP-2E44	European Wall Mount Humidity / Temperature Transmitter with 2% accuracy and universal current / voltage output for RH and Temperature	1-3 days*	$137.55
RHP-2E44-LCD	European Wall Mount Humidity / Temperature Transmitter with 2% accuracy and universal current / voltage output for RH and Temperature with LCD	1-3 days*	$203.60
RHP-2E4A	European Wall Mount Humidity / Temperature Transmitter with 2% accuracy and universal current / voltage output for RH and 10K Type III thermistor Temperature Sensor	Less Than 1 Week*	$132.00
RHP-2E4B	European Wall Mount Humidity / Temperature Transmitter with 2% accuracy and universal current / voltage output for RH and 10K Type II thermistor Temperature Sensor	Less Than 1 Week*	$132.00
RHP-2N40	North American Wall Mount Humidity Transmitter with 2% accuracy and universal current / voltage output for RH	1-2 Weeks*	$137.05
RHP-2N40-LCD	North American Wall Mount Humidity Transmitter with 2% accuracy and universal current / voltage output for RH with LCD	1-2 Weeks*	$203.10
RHP-2N44	North American Wall Mount Humidity / Temperature Transmitter with 2% accuracy and universal current / voltage output for RH and Temperature	1-3 days*	$148.50
RHP-2N44-LCD	North American Wall Mount Humidity / Temperature Transmitter with 2% accuracy and universal current / voltage output for RH and Temperature with LCD	1-3 days*	$214.55
RHP-2N4A	North American Wall Mount Humidity / Temperature Transmitter with 2% accuracy and universal current / voltage output for RH and 10K Type III thermistor Temperature Sensor	1-2 Weeks*	$142.95
RHP-2N4B	North American Wall Mount Humidity / Temperature Transmitter with 2% accuracy and universal current / voltage output for RH and 10K Type II thermistor Temperature Sensor	1-3 days*	$142.95
RHP-3E40	European Wall Mount Humidity Transmitter with 3% accuracy and universal current / voltage output for RH	Less Than 1 Week*	$113.85
RHP-3E40-LCD	European Wall Mount Humidity Transmitter with 3% accuracy and universal current / voltage output for RH with LCD	Less Than 1 Week*	$179.90
RHP-3E44	European Wall Mount Humidity / Temperature Transmitter with 3% accuracy and universal current / voltage output for RH and Temperature	1-3 days*	$125.30
RHP-3E44-LCD	European Wall Mount Humidity / Temperature Transmitter with 3% accuracy and universal current / voltage output for RH and Temperature with LCD	1-3 days*	$191.35
RHP-3E4A	European Wall Mount Humidity / Temperature Transmitter with 3% accuracy and universal current / voltage output for RH and 10K Type III thermistor Temperature Sensor	Less Than 1 Week*	$119.75
RHP-3E4B	European Wall Mount Humidity / Temperature Transmitter with 3% accuracy and universal current / voltage output for RH and 10K Type II thermistor Temperature Sensor	Less Than 1 Week*	$119.75
RHP-3N40	North American Wall Mount Humidity Transmitter with 3% accuracy and universal current / voltage output for RH	1-2 Weeks*	$124.80
RHP-3N40-LCD	North American Wall Mount Humidity Transmitter with 3% accuracy and universal current / voltage output for RH with LCD	1-2 Weeks*	$190.85
RHP-3N44	North American Wall Mount Humidity / Temperature Transmitter with 3% accuracy and universal current / voltage output for RH and Temperature	1-3 days*	$136.25
RHP-3N44-LCD	North American Wall Mount Humidity / Temperature Transmitter with 3% accuracy and universal current / voltage output for RH and Temperature with LCD	1-3 days*	$202.30
RHP-3N4A	North American Wall Mount Humidity / Temperature Transmitter with 3% accuracy and universal current / voltage output for RH and 10K Type III thermistor Temperature Sensor	1-2 Weeks*	$130.70
RHP-3N4B	North American Wall Mount Humidity / Temperature Transmitter with 3% accuracy and universal current / voltage output for RH and 10K Type II thermistor Temperature Sensor	1-3 days*	$130.70

Specifications

Relative Humidity Range:: 0 to 100% RH.
Temperature Range:: -40 to 140°F (-40 to 60°C) for thermistor and RTD sensors. -20 to 140°F (-28.9 to 60°C) for solid state band gap temperature sensors.
Dew Point Temperature Range:: -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); -4 to 140°F (-20 to 60°C) field selectable ranges.
Accuracy:: RH: Model RHP-2XXX ±2% 10 to 90% RH @ 25°C; Model RHP-3XXX ±3% 20 to 80% RH @ 25°C; Model RHP-5XXX ±5% 20 to 80% RH @ 25°C; Thermistor temperature sensor: ±0.36°F @ 77°F (±0.2°C @ 25°C); RTD temperature sensor: DIN Class B; ±0.54°F @ 32°F (±0.3°C @ 0°C); Solid state band gap temperature sensor: ±0.9°F @ 77°F (±0.3°C @ 25°C).
Hysteresis:: ±.8%.
Repeatability:: ±0.1% typical.
Temperature Limits:: Operating: -40 to 140°F (-40 to 60°C); Storage: -40 to 176°F (-40 to 80°C).
Compensated Temperature Range:: -4 to 140°F (-20 to 60°C).
Power Requirements:: 4-20 mA loop powered outputs: 10-35 VDC; 0-5/10V outputs: 15-35 VDC or 15-29 VAC.
Output Signals:: 4-20 mA loop powered outputs: 4-20 mA, 2 channels for humidity/ solid state temperature sensor models (loop powered on RH). Switch selectable RH/dew point. Switch selectable normal or reverse output; 0-5/10V outputs: 5 mA max., 2 channels for humidity/solid state temperature sensor models. Switch selectable 0-10 V/2-10 V or 0-5 V/1-5 V output. Switch selectable RH/dew point. Switch selectable normal or reverse output.
Solid State Band Gap Temp Sensor Output Ranges:: Switch selectable, -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); -4 to 140°F (-20 to 60°C).
Response Time:: 8 s.
Electrical Connections:: Screw terminal block.
Drift:: <.25% RH/year.
RH Sensor:: Capacitance polymer.
Enclosure Material:: Polycarbonate.
Enclosure Rating:: IP20.
Display:: Optional LCD; Switch selectable %RH or dew point, °F/°C.
Display Resolution:: RH: 1%; Temperature: 0.1°F (0.1°C); Dew Point: 1°F (1°C).
Weight:: 4.4 oz (125 g).
Compliance:: CE.

Features

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

Support Library

Product Literature

Manuals

Instruction Manual

Catalog Pages

Series RHP-E/N Catalog Page

Product Data Sheet

RHP-E/N

SlideShare

Approvals

CE Approval

Drawings

Videos

FAQ

Questions

Question

I'm looking for a dual temp. and humidity gauge for an 8" duct. I'm wanting to remote read the temp and humidity on the incoming and outgoing air to an ERV unit. The RHP-3M11-LCD was recommended to me, however, it is a direct read. What would be the correct instrument to remote read the temperature and humidity from a distance of 8 feet. The 8" duct is in the attic and I want to read the result in the down-stair hall. I don't want to record nor program the unit, just read the performance.

Answer

The sensor recommended would be the best option we have for sensing temperature and relative humidity for your application. We do not have any options with a remote display that could stretch as far as you are asking, nor are there any on the market to my knowledge. In every case, you would need to utilize a process output, in this case 4-20 mA, to transmit the readings to a remote display(s) which would accept the process signal(s). If you are just looking for a remote readout to go with the RHP sensor with no control functionality, then you could look at one of our panel meters, possibly the SPPM, DPMA, DPMW, or DPMP & DPML series panel meters. For assistance selecting an appropriate panel meter, please contact our technical support group at 219-879-8000.

Related

Series RH-R

Series WHT

Series RHP

Model 657-1

Series RHP-E/N

Series HHT

Model 657C-1

Question

P/N: RHP-2W44-LCD Documentation (https://dwyer-inst.com/PDF_files/AQ_RHP_E_N.pdf) on p. 4 indicates that sensor can be replaced, but unable to identify P/N of replacement sensor and if to be source from Dwyer or others

Answer

The replacement sensors are no longer available. RHP-2W44-LCD is now an obsolete unit that has been replaced with the RHP-2N44-LCD series. The sensors in this unit are not field replaceable.

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