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- Helen@tempandhumidity.com
Online temperature and humidity transmitter
Our online temperature and humidity transmitter has been calibrated by the Provincial Metrology Institute and has passed national explosion-proof quality inspections. Its explosion-proof markings are: Ex db IIC T6 Gb; Ex tb IIIC T80℃Db. It enables users to remotely monitor temperature and humidity changes over the long term and can be connected to a relay to control fans, alarms, or solenoid valves.
- Model: RS-FPC-WS-*-A-EX
- MOQ: 1 PCS
- Delivery date: within 24 hours
- Price: $84
About - Online Temperature and Humidity Transmitter
This explosion-proof temperature and humidity transmitter, designed by our company, is used to monitor temperature and humidity in the air. When the temperature or humidity exceeds the preset alarm threshold, it emits an audible and visual alarm signal to alert users to take safety measures promptly. The transmitter has passed national explosion-proof quality inspection. Its explosion-proof marking is: Ex db IIC T6 Gb; Ex tb IIIC T80℃Db (a flexible explosion-proof conduit must be provided separately for the cable outlet).
Features
1. This online temperature and humidity transmitter uses genuine, high quality temperature and humidity sensors, featuring high measurement accuracy and strong resistance to interference, ensuring the product’s superior performance.
2. It employs remote infrared control technology to manage alarms and modify parameters from a distance. This eliminates the risks of sparks and static electricity associated with opening the unit on-site.
3. A high quality LCD display is available as an option, allowing users to view data in real time on-site. The die-cast aluminum housing is waterproof, dustproof, and corrosion-resistant, protecting internal components from damage. With an IP66 protection rating, it is suitable for use in harsh outdoor environments.
4. Multiple signal output options are available, including RS485, 4-20 mA, 0-5 V, and 0-10 V.
5. On-site power is supplied via a wide-range 10-30 V DC power supply, making it compatible with a variety of on-site DC power sources.
Parameters
| Power supply | DC 10-30V |
|---|---|
| Average power consumption | RS485: 0.35W (1W when alarm is triggered); Analog: 3.05W (4~20mA full scale with alarm light on) |
| Operating environment | With display: -20℃~+60℃, 0%RH~95%RH (non-condensing); Without display: -40℃~+80℃, 0%RH~95%RH (non-condensing) |
| Measuring range | With display: -20℃~+60℃, 0%RH~100%RH; Without display: -40℃~+80℃, 0%RH~100%RH |
| Accuracy | ±0.5℃ (25℃), ±3%RH (60%RH, 25℃) |
| Resolution | 0.1℃, 0.1RH% |
| Long-term stability | Temperature: ≤0.1℃/y, Humidity: ≤1%RH/y |
| Signal output | RS485/4-20mA/0-5V/0-10V |
| Explosion-proof marking | Ex db IIC T6 Gb; Ex tb IIIC T80℃Db |
| Relay load capacity | 250VAC 1A/30VDC 1A |
Application
Our company’s explosion-proof temperature and humidity transmitter is designed for special monitoring environments such as confined spaces on construction sites, damp and enclosed areas, and flammable and explosive environments. It is installed at critical locations—such as underground utility tunnels, excavation pits, and equipment rooms—to provide round-the-clock, uninterrupted dynamic monitoring of temperature and humidity.
Wiring
RS485 signal output wiring:
| Description | Line color | Explanation |
|---|---|---|
| Power supply (cable exiting from left) | Brown (Red) | Power positive (10~30V DC) |
| Black | Power negative | |
| Communication (cable exiting from left) | Yellow | 485-A |
| Blue (Green) | 485-B | |
| Passive relay type (cable exiting from right) | Yellow | Relay normally open contacts (yellow, blue) |
| Blue |
4-20mA, 0-5V, 0-10V signal output wiring:
| Description | Line color | Explanation |
|---|---|---|
| Power supply (cable exiting from left) | Brown | Power positive (10~30V DC) |
| Black | Power negative | |
| Output (cable exiting from left) | Blue | Temperature signal positive |
| Green | Temperature signal negative | |
| Yellow | Humidity signal positive | |
| White | Humidity signal negative | |
| Output (cable exiting from left without display or alarm light) | Blue | Temperature signal positive |
| Yellow | Humidity signal positive | |
| Passive relay type (cable exiting from right) | Yellow | Relay normally open contacts (yellow, blue) |
| Blue |
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