Dwyer Instruments RHPX-2SDAB-00 Humidity and Temperature Transmitter, 0-100% RH, 10kohm Type II Thermistor, Duct Mount, Small Enclosure
Dwyer Instruments RHPX-2SDAB-00 Humidity and Temperature Transmitter, 0-100% RH, 10kohm Type II Thermistor, Duct Mount, Small Enclosure - Image 2
SKU: SENS-3351
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Dwyer Instruments RHPX-2SDAB-00 Humidity and Temperature Transmitter, 0-100% RH, 10kohm Type II Thermistor, Duct Mount, Small Enclosure

₹28,309.00 (Inclusive of all taxes)
Out of Stock

The Dwyer Instruments RHPX-2SDAB-00 is a duct-mount humidity and temperature transmitter designed for commercial HVAC and building automation systems. It provides selectable 4-20mA, 0-5V, or 0-10V analog outputs for flexible integration with PLCs, BMS controllers, and data loggers.

Features

  • Dual-measurement transmitter for 0-100% RH and -40°C to 60°C temperature.
  • Selectable analog output: 4-20 mA, 0-5 V, or 0-10 V for versatile system integration.
  • High-accuracy capacitive polymer sensor with ±2% RH accuracy (10-90% RH @25°C).
  • IP66-rated, UL 94 V-0 enclosure with UL 2043 plenum compliance for demanding air-handling environments.
  • Features a 10kΩ Type II thermistor for precise temperature measurement and a duct-mount probe with hydrophobic filter.

Out of stock

Description

The Dwyer Instruments RHPX-2SDAB-00 transmitter utilizes a stable capacitive polymer sensing element for humidity measurement and a precision 10kΩ Type II thermistor for temperature. This combination ensures reliable, long-term performance in variable air stream conditions typical of HVAC ducts and plenums. The sensor’s hydrophobic filter protects the sensing element from contaminants and condensation.

Housed in a compact, IP66-rated enclosure compliant with UL 94 V-0 flammability standards and UL 2043 for plenum spaces, this transmitter is built for durability. It operates from a wide 10-35 VDC or 15-29 VAC supply, drawing minimal current, and outputs a clean, industry-standard analog signal for direct connection to building management systems, energy monitors, and data acquisition units.

Key Features

  • Dual-Parameter Sensing: Simultaneously monitors relative humidity and ambient temperature within a single, compact duct-mounted assembly.
  • Configurable Analog Output: User-selectable 4-20 mA (2-wire), 0-5 VDC, or 0-10 VDC output signals to match existing control system inputs.
  • Industrial-Grade Enclosure: IP66 rating provides protection against dust ingress and powerful water jets; UL 94 V-0 flame-retardant material and UL 2043 plenum rating ensure safe operation in air-handling spaces.
  • Precision Sensing Core: Employs a high-stability capacitive polymer humidity sensor and an interchangeable 10kΩ Type II thermistor for accurate environmental profiling.
  • Simplified Installation: Features a removable terminal block and an integrated cable gland for secure, tool-free wiring and probe replacement.
  • Wide Operating Range: Functions reliably across a broad temperature spectrum from -40°C to 60°C, suitable for both supply and return air monitoring.

Applications

  • Commercial HVAC system supply/return air monitoring and economizer control.
  • Building Automation System (BAS) integration for museum, archive, and data center climate control.
  • Energy management and indoor air quality (IAQ) monitoring in office buildings and schools.
  • Laboratory and cleanroom environmental condition logging and alarm triggering.
  • Industrial process control where ducted air humidity and temperature are critical parameters.

Technical Specifications

Manufacturer Part NumberRHPX-2SDAB-00
Product TypeHumidity & Temperature Transmitter
Humidity Measurement Range0 to 100 % RH
Humidity Accuracy±2 % RH (10–90 % RH @25°C)
Temperature Measurement Range-40°C to 60°C
Temperature Sensor Type10kΩ Type II Thermistor
Temperature Accuracy±0.2°C @ 25°C
Analog Output Options4–20 mA / 0–5 VDC / 0–10 VDC (Selectable)
Supply Voltage10–35 VDC / 15–29 VAC
Maximum Operating Current5 mA
Enclosure RatingIP66
Flammability RatingUL 94 V-0
Plenum ComplianceUL 2043
Mounting TypeDuct Mount
Probe FeaturesHydrophobic Filter
Dimensions (L x W x H)170 x 130 x 130 mm
Weight199 g

Frequently Asked Questions

What are the available output signal options for the RHPX-2SDAB-00 transmitter?

The transmitter offers three user-selectable analog output options: a 2-wire 4-20 mA current loop, a 0-5 VDC voltage signal, or a 0-10 VDC voltage signal. The selection is typically made via internal DIP switches or wiring configuration, allowing direct compatibility with PLC analog input modules, BMS controllers, and chart recorders.

What is the power supply requirement for this analog transmitter?

This transmitter requires a 10-35 VDC or 15-29 VAC power supply. For the 4-20 mA 2-wire loop-powered configuration, the supply voltage is applied across the signal loop. For voltage output models (0-5V or 0-10V), a separate power supply is needed, with a maximum current draw of 5 mA.

Is this sensor suitable for installation inside an HVAC duct or plenum space?

Yes, it is specifically designed for duct mounting. Its enclosure is rated IP66 for dust and moisture resistance and is constructed from UL 94 V-0 flame-retardant material. Furthermore, it is UL 2043 compliant, which certifies it for safe use in plenum (air-handling) spaces without contributing to smoke or flame spread.

How accurate is the humidity measurement, and what does the accuracy specification cover?

The humidity sensor provides an accuracy of ±2% RH, which is valid across the 10% to 90% RH range at a stable temperature of 25°C. This specification is typical for a high-quality capacitive polymer sensor and ensures reliable performance for most commercial HVAC control and monitoring applications.

Package Includes

  • 1 x Dwyer Instruments RHPX-2SDAB-00 Humidity and Temperature Transmitter

Additional Information

Weight 0.199 kg
Dimensions 17 × 13 × 13 cm

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