Dracal USB-TRH420 Enhanced precision USB temperature and humidity sensor (with filter)
Dracal USB-TRH420 Enhanced precision USB temperature and humidity sensor (with filter)
- Brand: Dracal
- MPN: USB-TRH420
- Part #: IPCDAL20005
- UPC:
- Brand: Dracal
- MPN: USB-TRH420
- Part #: IPCDAL20005
- UPC:
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Dracal USB-TRH420 Enhanced precision USB temperature and humidity sensor (with filter)
- Brand: Dracal
- MPN: USB-TRH420
- Part #: IPCDAL20005

Product URL: https://www.pbtech.co.nz/product/IPCDAL20005/Dracal-USB-TRH420-Enhanced-precision-USB-temperatu?srsltid=AfmBOooBlwGwiUhpXwBfDMPysyZ9LjXg7YA1PFbQ4up1eek1rXAPv717
Branch | New Stock | On Display |
---|---|---|
Auckland - Albany | - | |
Auckland - Glenfield | - | |
Auckland - Queen Street | - | |
Auckland - Auckland Uni | - | |
Auckland - Newmarket | - | |
Auckland - Westgate | - | |
Auckland - Penrose | - | |
Auckland - Henderson (Express) | - | |
Auckland - St Lukes | - | |
Auckland - Manukau | - | |
Hamilton | - | |
Tauranga | - | |
New Plymouth | - | |
Palmerston North | - | |
Petone | - | |
Wellington | - | |
Auckland - Head Office | - | |
Auckland - East Tamaki Warehouse | - | |
Christchurch - Hornby | - | |
Christchurch - Christchurch Central | - | |
Dunedin | - |
Features
TRH420: High-Precision USB Temperature and Relative Humidity Sensor.
The TRH420, a member of the TRH series, is a USB sensor designed for environmental temperature and relative humidity measurements, offering improved precision of ±0.1°C for temperature and ±1.5%RH for relative humidity. Its digitally calibrated, linearized, and factory-compensated sensor allows precise and interchangeable measurements, with a probe operating range of -40°C to 70°C. With a resolution of 0.015°C for temperature and 0.01%RH for relative humidity, it is ideally suited for applications requiring precise monitoring of these parameters. Its 1-meter USB cable and USB-powered operation provide excellent installation flexibility, while its robust design protects it against challenging environmental conditions.
Easy to use in your applications
- Virtual COM option (VCP)
- dracal-usb-get: command-line data integration tool
- dracal-sensgate-get: command-line tool for wireless access to sensors connected to a SensGate
- RVCP: REST API for wireless access to VCP instruments connected to a SensGate
Multiple integration and code examples, including Python, C, C++, Java, Node.js, C#, Grafana and LabVIEW.
Application examples
- Use as a working reference
- Integration into a quality control system in production (Lumotive)
Probe filters
- First filter material: Polyethylene terephthalate (PET) mesh
- Second filter material: PTFE membrane
Free data monitoring and calibration software
Like all Dracal measurement instruments, the TRH420 is compatible with free software tools, making it an essential component of a DAQ solution. For those who wish to integrate the TRH420 into their system, there are two options available: command line tools and VCP mode. If you prefer a graphical interface, DracalView is the appropriate choice.
Be instantly operational with DracalView: Dracal's free data visualization, logging and calibration software
- Works under Windows (Win7/8/10/11 64&32-bit), Mac OS X and Linux
- Simultaneous visualization and logging of an unlimited number of sensors
- Automatic synchronization with Dracal's Wi-Fi gateway
- Easy calibration mechanism open to the end-user
Note
1 This product can operate at 100 %RH but is not waterproof. Protect the sensor and CPU against direct exposure to water or snow. Extra housing may be required depending on the application.
2 It is recommended that the probe be installed pointing down to reduce the risk of water infiltration or build-up in the probe.
Specifications
Temperature (probe)
Probe operating range
-40°C to 70°C
Accuracy (typical)
±0.1°C (20°C to 60°C)
±0.2°C (-40°C to 70°C)
Resolution (typical)
0.015°C
Repeatability (typical)
0.06°C
Relative humidity (probe)
Operating range
0 to 100 %RH
Accuracy at 25°C (typical)
±2.0 %RH (0 to 80 %RH)
±3.0 %RH (90 to 100 %RH)
Accuracy at 0 to 70°C (typical)
±1.5 %RH from 0 to 70 %RH
Resolution (typical)
0.01 %RH
Repeatability
0.1 %RH
Probe filters
First filter material
Polyethylene terephthalate (PET) mesh
Second filter material
PTFE membrane
Efficiency
>99.99% for particles of 200 nm
Miscellaneous
USB cable length
1 m (3 ft)
Operating temperature range (USB interface)
0°C-70°C
Power source
USB powered
Certification
RoHS3, CE compliant
Note
1 This product can operate at 100 %RH but is not waterproof. Protect the sensor and CPU against direct exposure to water or snow. Extra housing may be required depending on the application.
2 It is recommended that the probe be installed pointing down to reduce the risk of water infiltration or build-up in the probe.