Flange-mounted sensing probe with an aluminum junction box and RS485 communication interface.
Measure air temperature and relative humidity and communicate the readings through RS485. FG7485 combines a flange-mounted probe with an aluminum junction box and a 12–36V DC supply for integration with compatible controllers, gateways and data acquisition equipment.
Check the communication protocol and settings against your receiving equipment. Include the controller or gateway model if you need help confirming compatibility.
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Check the measuring ranges, supply requirements and RS485 settings, then review the probe, flange and junction box dimensions.
| Specification | FG7485 |
|---|---|
| Measured parameters | Air temperature and relative humidity |
| Communication interface | RS485 |
| Power supply | 12–36V DC |
| Temperature measuring range | −40 to 120°C |
| Humidity measuring range | 0–99.9% RH |
| Temperature accuracy | ±0.3°C at 25°C |
| Humidity accuracy | ±3% RH |
| Temperature resolution | 0.1°C |
| Default baud rate | 9600 bps |
| Sampling interval | 3 seconds |
| Junction box | Aluminum-alloy housing |
| Installation | Flange mounting |
Temperature accuracy is specified at 25°C. Typical temperature error near the measuring range extremes is ±0.5°C. Confirm the communication protocol and serial settings against your receiving equipment.
Check the probe insertion space, mounting position and clearance around the junction box.
Leave access to the box cover and space for cable routing. Position the sensing end in representative airflow; do not immerse the probe in liquids.
Connect the DC supply and RS485 communication pair, then match the receiving equipment's settings to the transmitter.
Open full-size wiring diagram ↗
01 / Power & Communication Wires
Use a 12–36V DC supply. The red and black wires provide power connections; the yellow and white wires form the RS485 communication pair.
02 / Receiving Equipment
The receiving controller, gateway or acquisition device must support the transmitter's communication protocol and data format.
Connecting multiple transmitters? Assign distinct device addresses on the same bus and follow the system wiring requirements. Share your host or gateway model if you need help checking the communication match.
Communicate air temperature and relative humidity readings to compatible controllers, gateways and acquisition systems serving ventilation and production facilities.
Measure air temperature and humidity in ducts serving production or storage areas. Send the readings through RS485 to a compatible facility controller or gateway for the site's monitoring requirements.
Position the probe at a suitable air measuring point near equipment or within ventilation ductwork. Check the expected temperature and humidity conditions, mounting space and cable route before selecting the installation position.
Integrate readings from suitable ventilation or equipment air locations into a compatible receiving system. Confirm the communication protocol and host settings, and describe the air composition and site requirements when checking product suitability.
Answers about RS485 compatibility, model selection, measurement accuracy and installation.
It can connect to receiving equipment with a compatible RS485 interface and communication protocol. The host must also support the transmitter's serial settings and instructions for reading and interpreting the data.
Share the controller, communication module or gateway model if you need help checking the match. Wiring and available communication information can be provided for review.
FG7485 combines RS485 communication with an aluminum junction box. FG6485 also uses RS485, with a compact probe-style body and attached cable.
In the junction-box series, FG7010 provides analog voltage outputs, while FG7020 provides 4–20mA current outputs. Compare the interface, supply requirements and installation dimensions when selecting.
Multiple compatible devices can share an RS485 bus when the system is configured appropriately. Assign distinct device addresses and configure the host to request readings from the corresponding address.
The default baud rate is 9600 bps. Confirm the address-setting method, remaining serial settings and bus wiring against the FG7485 communication instructions and receiving equipment documentation.
The ±0.3°C accuracy is specified at 25°C. It should not be interpreted as the same accuracy across the entire −40 to 120°C measuring range.
Typical temperature error near the range extremes is ±0.5°C. Include your expected operating temperatures and accuracy requirements when checking suitability.
FG7485 measures air temperature and relative humidity. Position the sensing end in the air being measured; do not immerse the probe in water or other liquids.
Describe any condensation, direct spray, dust or unusual air composition so we can check suitability for the proposed location.
This page shows the flange-mounted configuration, powered by a 12–36V DC supply. Check the probe insertion space, duct opening and flange position against the dimensional drawing.
Leave clearance around the junction box for the cover and cable routing. Follow the wiring diagram for the supply and RS485 connections.
Need an RS485 temperature and humidity transmitter with an aluminum junction box? Tell us about your application and receiving equipment so we can confirm the configuration, pricing and shipping options.
Still checking compatibility? Share the receiving equipment's specifications or describe your setup. We can provide the available product, wiring and communication information and confirm suitable options with the supplier.