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esthd50a – temp rh duct tx current output
Carlo Gavazzi ESTHD50A duct temperature and humidity transmitter with 4-20 mA outputs for HVAC and environmental monitoring applications.
Why Choose the Carlo Gavazzi ESTHD50A Temperature and Humidity Duct Transmitter?
The Carlo Gavazzi ESTHD50A is a precise duct temperature and relative humidity transmitter designed for accurate environmental monitoring in HVAC, ventilation and industrial air management applications. As part of the Carlo Gavazzi ESTHD50 environmental sensor series, it combines temperature and humidity measurement in a compact duct-mounted device with analogue current outputs for seamless integration into automation and building management systems.
This transmitter uses high-quality sensing technology for long-term stability and accurate environmental measurement. The compact duct housing is designed for installation inside HVAC ventilation systems, making it suitable for air conditioning, clean rooms, factories, laboratories and building environmental monitoring applications.
With a 0–50 °C temperature measuring range, 0–100% RH humidity measurement range, 4–20 mA analogue current outputs and a 15–35 V DC / 19–29 V AC supply, the ESTHD50A provides reliable environmental feedback for modern HVAC and automation systems.
Key Advantages
- Combined temperature and humidity transmitter for HVAC and environmental monitoring.
- 4–20 mA current outputs for reliable industrial controller integration.
- 0–50 °C temperature range suitable for building and industrial applications.
- 0–100% RH humidity measurement for comprehensive environmental monitoring.
- Compact duct mounting design for ventilation systems.
- Stable sensing performance for long-term environmental monitoring.
Key Features
- Carlo Gavazzi ESTHD50 environmental sensor series.
- Duct-mounted temperature and humidity transmitter.
- 4–20 mA analogue current output.
- Temperature measurement range: 0–50 °C.
- Humidity measurement range: 0–100% RH.
- Capacitive humidity sensor and PT1000 temperature sensor.
- 15–35 V DC / 19–29 V AC supply.
- IP54 protection rating.
- Screw terminal connection with cable gland.
- Designed for HVAC duct environments.
Accurate Temperature and Humidity Monitoring for HVAC Systems
Environmental transmitters such as the Carlo Gavazzi ESTHD50A provide continuous measurement of temperature and relative humidity conditions within ventilation systems. The 4–20 mA outputs allow reliable signal transmission over longer cable distances for HVAC controllers, PLCs and building management systems.
The ESTHD50 series is designed for professional environmental monitoring applications where accurate air measurement, compact installation and dependable long-term operation are required.
Typical Applications
- HVAC ventilation monitoring.
- Air conditioning control systems.
- Building management systems.
- Clean room environmental monitoring.
- Factory and industrial ventilation systems.
- Laboratory environmental control.
Technical Specifications
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| Coil / Supply Voltage | 15–35 V DC | |
|---|---|---|
| IP Rating | IP20, IP54 | |
| Output Type | Analogue | |
| Sensing Principle | Capacitive | |
| Connection | Terminals | |
| Manufacturer | Carlo Gavazzi | |
| Series | ESTHD50 Environmental Sensors | |
| Model | ESTHD50A | |
| Product type | Temperature and humidity duct transmitter | |
| Mounting type | Duct mounting | |
| Temperature measuring range | 0–50 °C | |
| Humidity measuring range | 0–100% RH | |
| Output Type | 4–20 mA analogue current output | |
| Number of outputs | 2 analogue outputs | |
| Supply voltage | 15–35 V DC / 19–29 V AC | |
| Temperature accuracy | ±0.3 °C at 25 °C | |
| Humidity accuracy | ±3% RH (20–80% RH) | |
| Sensor type | Capacitive humidity sensor and PT1000 temperature sensor | |
| Protection rating | IP54 (Sensor: IP20) | |
| Connection type | Screw terminals | |
| Housing material | PC fire-resistant class PC-110 | |
| Operating temperature | -25 °C to +60 °C |
Frequently Asked Questions
What is the Carlo Gavazzi ESTHD50A used for?
The ESTHD50A is used for measuring temperature and relative humidity inside HVAC ducts and environmental monitoring systems.
What output signal does the ESTHD50A provide?
The transmitter provides 4–20 mA analogue current outputs for temperature and humidity monitoring.
What temperature range can this transmitter measure?
The ESTHD50A measures temperature from 0 to 50 °C.
What humidity range can this transmitter measure?
The transmitter measures relative humidity from 0 to 100% RH.
Where is the ESTHD50A installed?
The transmitter is designed for duct mounting in HVAC systems, ventilation equipment and industrial environmental monitoring applications.
Trusted for Environmental Monitoring Systems
Carlo Gavazzi environmental sensors are used by HVAC engineers and automation professionals to provide accurate temperature and humidity monitoring for modern building and industrial control systems.
