DIMENSIONS

5-1/8 [3] 3/16 [4.76] HOLES

[130.18] 2-1/4 EQUALLY SPACED ®
[57.15] ON A 4.115 [104.52] BC

3-45/64 55/64
[94.06] [21.83] 2-9/16
[64.96]
SERIES RHP | HUMIDITY/TEMPERATURE TRANSMITTERS
6-25/32 2-11/64 2-11/64
[172.16] [55.17] [55.12]
1/2 NPT
2-41/64
2-41/64 [67.03] 8-61/64
[67.07] 2-9/64 [227.30]
[54.37]
OSA (outside air) with sintered filter 35/64
[13.89]
5-1/8 3-11/64
4-17/32 2-15/64 4-17/32 [130.18] [80.57] A-RHP-FC
[115.09] [56.75] [115.09]

3-1/8 Duct mount

3-1/8 [79.38]
[79.38] OSA (outside air) OSA (outside air) OSA
Duct mount with radiation shield with sintered filter (outside air)
1-13/64
[30.56]

Ø3/16
6-25/32
[172.09]
FEATURES/BENEFITS
[4.76]
MOUNTING • 2%, 3%, or 5% accuracy models to meet project requirements
HOLES
TYP 4 PLCS • Integral temperature sensors reduces number of devices to install
55/64
[21.83] • Radiation shield option protects sensor from radiant heating effects allowing for accurate readings even when mounted in
OSA (outside air) direct sunlight
HOW TO ORDER APPLICATIONS DESCRIPTION
Use the bold characters from the chart below to construct a product code. • Air economizers The Series RHP Humidity/Temperature Transmitters combine the
RHP -2 D 1 A -LCD • Outdoor temperature and relative humidity reference for building systems voltage or current humidity transmitter output with a passive temperature
thermistor or RTD output. The polymer capacitance humidity sensor
reduces longterm affect of condensation, fog, or high humidity. The
SERIES OPTIONS humidity sensors are available with 2%, 3% or 5%­ accuracies. Duct
RHP: RH/passive temperature sensor transmitter -LCD: LCD display mounted transmitters are available with an optional two-line alpha
-NIST: NIST traceable calibration certificate numeric LCD display.
ACCURACY SPECIFICATIONS
-2: 2% accuracy TEMPERATURE SENSOR Relative Humidity Range 0 to 100% RH.
-3: 3% accuracy 0: None Temperature Range -40 to 140°F (-40 to 60°C).
-5: 5% accuracy 1: 4-20 mA
Accuracy, RH RHP-2XXX ±2% 10-90% RH @ 25°C; RHP-3XXX ±3% 20-80% RH @ 25°C; RHP-5XXX ±5% 20-80% RH @ 25°C.
2: 0-10 VDC
Accuracy, Thermistor Temp ±0.2°C @ 25°C (±0.36°F @ 77°F).
HOUSING TYPE 3: 0-5 VDC
Sensor
D: Duct mount with plastic hydrophobic filter A: 10K @ 25°C thermistor type III
O: OSA (outside air) B: 10K @ 25°C thermistor type II Accuracy, RTD Temp Sensor DIN Class B; ±0.3°C @ 0°C (±0.54°F @ 32°F).
S: OSA with sintered filter* C: 3K @ 25°C thermistor Accuracy, Solid State Band ±0.9°F @ 77°F (±0.3°C @ 25°C).
R: Radiation shield D: 100 Ω RTD DIN 385 Gap
E: 1K Ω RTD DIN 385 Hysteresis ±1%.
*Use OSA with sintered filter models when purchasing F: 20K Ω @ 25°C thermistor Repeatability ±0.1% typical.
Series RHRS separately. Temperature Limits -40 to 140°F (-40 to 60°C).
RH OUTPUT
Storage Temperature -40 to 176°F (-40 to 80°C).
1: 4-20 mA
2: 0-10 V Compensated Temperature -4 to 140°F (-20 to 60°C).
3: 0-5 VDC Range
ACCESSORIES
4-20 mA Loop Powered Models Power requirements: 10-35 VDC; Output signal: 4-20 mA.
Model Description 0-5/10 V Output Models Power requirements: 15-35 VDC or 15-29 VAC; Output signal: 0-10 V @ 5 mA max.
A-RHP-FC Replacement plastic hydrophobic filter Response Time 15 s.
A-RHP-RT Retrofit tool for fitting O-ring on RHP-D/M models for new filter A-RHP-FC Electrical Connections Removable screw terminal block.
Conduit Connection Duct mount: 1/2˝ NPS; OSA: PG11 or PG16 (1/2˝ conduit) knockouts.
ORDER ONLINE TODAY! Drift
RH Sensor
< 1% RH/year.
Capacitance polymer.
dwyer-inst.com/Product/SeriesRHP Temperature Sensor Types 1, 2, 3: Solid state band gap; Curves A, B, C: Thermistor; Curves D, E: Platinum RTD DIN 385.
Enclosure Duct mount: PBT; OSA: Polycarbonate.
DWYER INSTRUMENTS, INC. Enclosure Rating Duct mount: NEMA 4X (IP66) for housing only; OSA: NEMA 4X (IP66).
Display Duct mount only, optional 2-line alpha numeric, 8 characters/line.
©Copyright 2020 Dwyer Instruments, Inc.
Printed in U.S.A. 4/20 DS-RHP Rev. 4 Display Resolution RH: 0.1%; 0.1°F (0.1°C).
Weight Duct mount: .616 lb (.3 kg); OSA: 1 lb (.45 kg).
Important Notice: Dwyer Instruments, Inc. reserves the right to make changes to or discontinue any product or service identified in this publication without notice. Dwyer advises its customers to obtain the
latest version of the relevant information to verify, before placing any orders, that the information being relied upon is current.
Agency Approvals CE.
DIMENSIONS
5-1/8 [3] 3/16 [4.76] HOLES
[130.18] 2-1/4 EQUALLY SPACED ®
[57.15] ON A 4.115 [104.52] BC

3-45/64 55/64
[94.06] [21.83] 2-9/16
[64.96]
SERIES RHP | HUMIDITY/TEMPERATURE TRANSMITTERS
6-25/32 2-11/64 2-11/64
[172.16] [55.17] [55.12]
1/2 NPT
2-41/64
2-41/64 [67.03] 8-61/64
[67.07] 2-9/64 [227.30]
[54.37]
OSA (outside air) with sintered filter 35/64
[13.89]
5-1/8 3-11/64
4-17/32 2-15/64 4-17/32 [130.18] [80.57] A-RHP-FC
[115.09] [56.75] [115.09]

3-1/8 Duct mount

3-1/8 [79.38]
[79.38] OSA (outside air) OSA (outside air) OSA
Duct mount with radiation shield with sintered filter (outside air)
1-13/64
[30.56]

Ø3/16
6-25/32
[172.09]
FEATURES/BENEFITS
[4.76]
MOUNTING • 2%, 3%, or 5% accuracy models to meet project requirements
HOLES
TYP 4 PLCS • Integral temperature sensors reduces number of devices to install
55/64
[21.83] • Radiation shield option protects sensor from radiant heating effects allowing for accurate readings even when mounted in
OSA (outside air) direct sunlight
HOW TO ORDER APPLICATIONS DESCRIPTION
Use the bold characters from the chart below to construct a product code. • Air economizers The Series RHP Humidity/Temperature Transmitters combine the
RHP -2 D 1 A -LCD • Outdoor temperature and relative humidity reference for building systems voltage or current humidity transmitter output with a passive temperature
thermistor or RTD output. The polymer capacitance humidity sensor
reduces longterm affect of condensation, fog, or high humidity. The
SERIES OPTIONS humidity sensors are available with 2%, 3% or 5%­ accuracies. Duct
RHP: RH/passive temperature sensor transmitter -LCD: LCD display mounted transmitters are available with an optional two-line alpha
-NIST: NIST traceable calibration certificate numeric LCD display.
ACCURACY SPECIFICATIONS
-2: 2% accuracy TEMPERATURE SENSOR Relative Humidity Range 0 to 100% RH.
-3: 3% accuracy 0: None Temperature Range -40 to 140°F (-40 to 60°C).
-5: 5% accuracy 1: 4-20 mA
Accuracy, RH RHP-2XXX ±2% 10-90% RH @ 25°C; RHP-3XXX ±3% 20-80% RH @ 25°C; RHP-5XXX ±5% 20-80% RH @ 25°C.
2: 0-10 VDC
Accuracy, Thermistor Temp ±0.2°C @ 25°C (±0.36°F @ 77°F).
HOUSING TYPE 3: 0-5 VDC
Sensor
D: Duct mount with plastic hydrophobic filter A: 10K @ 25°C thermistor type III
O: OSA (outside air) B: 10K @ 25°C thermistor type II Accuracy, RTD Temp Sensor DIN Class B; ±0.3°C @ 0°C (±0.54°F @ 32°F).
S: OSA with sintered filter* C: 3K @ 25°C thermistor Accuracy, Solid State Band ±0.9°F @ 77°F (±0.3°C @ 25°C).
R: Radiation shield D: 100 Ω RTD DIN 385 Gap
E: 1K Ω RTD DIN 385 Hysteresis ±1%.
*Use OSA with sintered filter models when purchasing F: 20K Ω @ 25°C thermistor Repeatability ±0.1% typical.
Series RHRS separately. Temperature Limits -40 to 140°F (-40 to 60°C).
RH OUTPUT
Storage Temperature -40 to 176°F (-40 to 80°C).
1: 4-20 mA
2: 0-10 V Compensated Temperature -4 to 140°F (-20 to 60°C).
3: 0-5 VDC Range
ACCESSORIES
4-20 mA Loop Powered Models Power requirements: 10-35 VDC; Output signal: 4-20 mA.
Model Description 0-5/10 V Output Models Power requirements: 15-35 VDC or 15-29 VAC; Output signal: 0-10 V @ 5 mA max.
A-RHP-FC Replacement plastic hydrophobic filter Response Time 15 s.
A-RHP-RT Retrofit tool for fitting O-ring on RHP-D/M models for new filter A-RHP-FC Electrical Connections Removable screw terminal block.
Conduit Connection Duct mount: 1/2˝ NPS; OSA: PG11 or PG16 (1/2˝ conduit) knockouts.
ORDER ONLINE TODAY! Drift
RH Sensor
< 1% RH/year.
Capacitance polymer.
dwyer-inst.com/Product/SeriesRHP Temperature Sensor Types 1, 2, 3: Solid state band gap; Curves A, B, C: Thermistor; Curves D, E: Platinum RTD DIN 385.
Enclosure Duct mount: PBT; OSA: Polycarbonate.
DWYER INSTRUMENTS, INC. Enclosure Rating Duct mount: NEMA 4X (IP66) for housing only; OSA: NEMA 4X (IP66).
Display Duct mount only, optional 2-line alpha numeric, 8 characters/line.
©Copyright 2020 Dwyer Instruments, Inc.
Printed in U.S.A. 4/20 DS-RHP Rev. 4 Display Resolution RH: 0.1%; 0.1°F (0.1°C).
Weight Duct mount: .616 lb (.3 kg); OSA: 1 lb (.45 kg).
Important Notice: Dwyer Instruments, Inc. reserves the right to make changes to or discontinue any product or service identified in this publication without notice. Dwyer advises its customers to obtain the
latest version of the relevant information to verify, before placing any orders, that the information being relied upon is current.
Agency Approvals CE.