High Temperature and Humidity Transmitter with RS-485 (Duct Mount) – HTX-800-DM
High Temperature and Humidity Transmitter with RS-485 (Duct Mount) – HTX-800-DM
HTX-800 – Duct Mount Humidity + Temperature Sensor cum Transmitter (SS Stem Size = 12.5 Dia. x 200 mm)
Size – 70 x 100 x 50 (H x W x D).
Libratherm offers rugged and reliable T + RH sensor cum Transmitter Model HTX-800 for sensing Temperature and RH simultaneously in the environment and transmitting the proportional analogue value in the form of (4-20) mA or (0-10) VDC or MODBUS RTU over RS-485 bus.
The transmitter featured here converts the digital signal generated from the sensor to the equivalent signal of 4-20mA/0-10VDC, which can be transmitted over a very long distance without losing measurement accuracy. Dual 4-20mA proportional to T and %RH can be used for remote measurement and control.
This transmitter typically operates on a 24Vdc power supply (offers a wide range of 18 to 36VDC) and is housed in an IP-65 ABS plastic enclosure with a suitable length of the SS stem for inserting the sensor in the duct area. The 24VDC supply and 4-20mA are electrically isolated from each other. They prevent ground line interferences or loading effects while connecting to external measuring/controlling devices like DCS, PLC, or BMS controller DDC, PID or On/Off controllers. A standard 2-meter cable with end terminal lugs is attached to the transmitter for ease of connection and wiring.
Key Features:
- Designed using 32-bit microcontroller.
- Highly accurate T+RH integrated sensor.
- Sensing range (-40 to 120) oC and (0 to 100) %RH
- Operates on 18-36VDC.
- Duct type and Wall mount models.
- 4-20mA / 0-10V output proportional to Temperature and RH measurement range
- 4-20mA / 0-10V output and power supply grounds are electrically isolated
- RS-485 serial interface over MODBUS RTU protocol (optional)
- IP-65 ABS plastic enclosure with SS Stem and micro-porous Bronze Sintered Air Filter
- Standard 2-meter cable
Application:
- HVAC / AHU / Humidifiers /Foggers and De-humidifiers
- Pharma Labs / Manufacturing Plants / Textile Industries
- Data Center / Server rooms, Green Houses, Ware Houses etc.
| Parameters | Description |
|---|---|
| Item | T + RH sensor cum Transmitter / RH sensor cum Transmitter |
| Models | HTX-800 and HTX-800-DM |
| Built-in Digital Sensors | 4th Gen., High-Accuracy, 16-bit, Industrial Grade, Relative Humidity and Temperature Sensor – embedded inside the bronze sintered filter |
| Operating Temp. Range | -40 to 120°C |
| Temp. Output | (4-20) mA / (0-10) VDC is proportional to 0 to 100°C. RL max = 500 Ohms for (4-20) mA, RL min = 100K for (0-10) VDC |
| Temp. Accuracy | ± 0.3°C |
| Operating RH Range | 0 to 100% |
| %RH Output | (4-20) mA / (0-10) VDC proportional to 0 to 100%Rh RL max = 500 Ohms for (4-20) mA, RL min = 100K for (0-10) VDC |
| RH Accuracy | +/- 2% @ 25°C and 50% Rh (Better than +/-1% within 20 to 70%RH) |
| Response Time | Max. 2 seconds |
| Digital Interface | MODBUS RTU over RS-485 (Optional) |
| Isolation Voltage | Greater than 1.5KV (4-20mA/0-10VDC Output and 24VDC Supply voltage are electrically isolated) |
| Supply Voltage | Typical 24VDC @ 100mA max. (Wide range of 18 to 36VDC @ 100mA) |
| Mounting Type | Duct mounted. Hole diameter of 15 mm. +/- 1.0 mm. |
| Enclosure / SS Stem Size | 70(h) x 100(w) x 50(d) mm / 12.5 Dia. x 200 mm |
| Enclosure / Box type | IP-65 ABS Plastic with wall mounting clamps |
| Cable | 6-core PVC/PVC insulated 2 meters long with standard colour code for supply and analogue/digital interface. An extra length of cable can be provided against the requirement. |
| Sensor Cable (optional) | An extra 2-meter cable with the sensor can be provided, where the sensor is installed inside the chamber/room, and the electronics box is outside the chamber/room. |
| Precautions for use | Avoid condensation and drenching. Avoid exposure to saline, inorganic and organic gas. |
| Sr. No. | Model | Product Description | Part no. |
|---|---|---|---|
| 1.1 | HTX-800-DM | Duct Mount Humidity + Temperature Sensor cum Transmitter + 2 x 4-20mA output + 2-meter supply and signal cable (Sensor SS stem size 12.5mm x 200mm) | 3304-1 |
| 1.2 | HTX-800-DM | Duct Mount Humidity + Temperature Sensor cum Transmitter + 2 x 0-10V output + 2-meter supply and signal cable (Sensor SS stem size 12.5mm x 200mm) | 3304-2 |
| 1.3 | HTX-800-DM | Duct Mount Humidity + Temperature Sensor cum Transmitter + 2 x 4-20mA output + RS-485 port + 2-meter supply and signal cable (Sensor SS stem size 12.5mm x 200mm) | 3304-3 |
| 1.4 | HTX-800-DM | Duct Mount Humidity + Temperature Sensor cum Transmitter + only RS-485 port + 2-meter supply and signal cable (Sensor SS stem size 12.5mm x 200mm) | 3304-4 |
Product Category
Digital Indicators
- Temperature Indicators
- Large Display Temperature Indicators
- Portable Thermometers
Temperature Controllers
- Ramp/Soak Temperature Controllers
- Multi Zone Ramp/Soak Controllers
- PWHT/SR Controllers
- PID Temperature Controllers
- On-Off Temperature Controllers
Data Loggers & Scanners
- Temperature Data Loggers
- Temperature Scanners
Temperature & Humidity Instruments
- Temperature and Humidity Sensors
- Temperature and Humidity Transmitters
- Temperature and Humidity Indicators
- Temperature and Humidity Controllers
- Clean Room Monitoring Systems
Thyristor Triggering Cards
- Thyristor Triggering Cards
- Zero Cross Over Triggering Cards
- Capacitor Bank Switch Cards (RTPFC)
Thyristor Power Controllers
Phase Angle Controllers
- Single Phase Thyristor Power Controllers
- Two Phase Thyristor Power Controllers
- Three Phase Thyristor Power Controllers
Zero Cross Over Switches
- Single Phase Thyristor Power Switches
- Three Phase Thyristor Power Switches
- Three Phase SSR
DC Rectifiers
- Single Phase Thyristor DC Rectifier
- Two Phase Thyristor DC Rectifier
- Three Phase Thyristor DC Rectifier
- Capacitor Bank Switches (RTPFC)
Signal Isolators & Conditioners
Signal Isolator DC to DC Signal
- Signal Isolator DC to DC – AC Operated
- Signal Isolator DC to DC – 24 VDC Operated
Signal Isolator AC to DC Signal
- Signal Isolator AC to DC – AC Operated
- Signal Isolator AC to DC – 24 VDC Operated
Signal Isolator Temperature to DC Signal
- Signal Isolator Temp to DC – AC Operated
- Signal Isolator Temp to DC – 24 VDC Operated
- Signal Isolator Frequency to DC Signal
- Signal Isolator with Display
- Load Cell Signal Conditioners
Transmitters
- Temperature Transmitters
- Process Transmitters
Motor Controllers
- DC Motor Controllers
- Motor Soft Starters
- Molten Metal Pyrometers
- IoT Modules
- Instrumentation Control Panels
- Product Accessories