COMET H4431 Temperature Controller Pt1000 RS485 2 Relays
€275.00
COMET H4431 Temperature Controller Pt1000 RS485 2 Relays
The COMET H4431 is a powerful and versatile temperature controller with RS485 output for external Pt1000 sensors, featuring an extremely wide measuring range from –200 °C to +600 °C. Whether for cryogenic systems, refrigeration, industrial furnaces, drying processes, or laboratories – this single device covers virtually any temperature control task.
Two potential‑free relay outputs (2 A / 50 V / 60 VA) allow direct switching of heaters, coolers, solenoid valves, fans, or alarms. If the temperature exceeds set limits, a loud built‑in acoustic alarm sounds – providing maximum safety even without network connection. Three binary inputs detect external conditions such as door/window open, overheating protection, or emergency stop.
The RS485 interface with Modbus RTU (factory default) makes the H4431 an ideal component in building automation, SCADA, and Industry 4.0 systems. Alternatively, ARION and Advantech ADAM protocols are supported. Configuration takes just minutes via the free TSensor software or directly on the large dual‑line display.
A robust IP65 enclosure, operating temperature range –30 to +80 °C, and compatibility with any Pt1000 sensor (e.g., cryogenic, immersion, penetration, or surface probes) make the H4431 a true all‑rounder for professional temperature control applications.
Your benefits with the COMET H4431:
- Huge measuring range –200 to +600 °C with external Pt1000 sensor
- 2 potential‑free relays – direct load switching up to 60 VA
- Integrated acoustic alarm – audible on site immediately
- 3 binary inputs for external signals
- RS485 Modbus RTU – seamless integration into any automation system
- Accuracy ±0.2 °C, resolution 0.1 °C
- Large dual‑line display – switchable on/off
- IP65 housing – suitable for harsh environments
- Free TSensor software for configuration and calibration
- 3‑year warranty
Technical data:
- Measuring range: –200 to +600 °C (depending on the Pt1000 sensor)
- Accuracy: ±0.2 °C (without probe)
- Resolution: 0.1 °C
- Input: External Pt1000 / 3850 ppm sensor
- Relay outputs: 2 × potential‑free, max. 50 V / 2 A / 60 VA
- Binary inputs: 3 × dry contact / open collector (not galvanically isolated)
- Communication: RS485 (Modbus RTU, ARION, Advantech ADAM)
- Acoustic alarm: Built‑in buzzer, switchable
- Power supply: 9–30 V DC
- Protection class: IP65 (electronics), IP40 (sensors)
- Operating temperature: –30 to +80 °C
- Warranty: 3 years
Perfect for use in:
- Cryogenic and refrigeration systems
- Industrial furnaces and drying processes
- Laboratory and test bench applications
- Cooling, air conditioning and ventilation systems
- Pharmaceutical production and clean rooms
- Food processing (ovens, freezing systems)
- Machine and equipment monitoring
- Process control under extreme temperatures
Easy installation & commissioning:
Connect the Pt1000 probe, wire the relays and binary inputs, supply power and RS485 – done. Switching points, hysteresis and alarm delay can be set within minutes via TSensor software or directly on the device.
Summary:
- Temperature transmitter for Pt1000 sensors with two relay outputs
- For indoor and outdoor installation
- Designed for external Pt1000 temperature probes
- Three bidirectional inputs
Scope of delivery:
- H4431 – without external probe
- User manual
- Traceable calibration certificate
- Free TSensor software for transmitter configuration
Temperature Transmitter with RS485 Output
Sensor data
- Measured quantity: Temperature
- Sensor type (external): Pt1000
- Measuring range: −200 to +600 °C
- Accuracy: ±0.2 °C
- Resolution: 0.1 °C
- Number of channels: 1 × external temperature sensor (not included)
- Temperature compensation of humidity sensor: Entire temperature range
- Available temperature units: °C, °F
Relay outputs
- Quantity: 2
- Maximum voltage: 50 V
- Maximum current: 2 A
- Maximum power: 60 VA
Binary inputs
- Quantity: 3
- Signal types: Potential-free contact, open collector, or two-state voltage signal
- Note: Inputs are not galvanically isolated
- Minimum pulse duration: 500 ms
- Voltage on open contact: < 3.3 V
- Low level: 0 to +0.5 V
- High level: +3.0 to +30 V
General technical data
- Operating temperature: −30 to +80 °C
- Acoustic alarm: Built-in buzzer, switchable
- Communication interface: RS485
- Communication protocols: ModBus RTU, ARION, Advantech ADAM
- Power supply: 9–30 VDC
- Protection class: IP65 (electronics), IP40 (sensors)
- Dimensions: 136 × 160 × 45 mm
- Weight: approx. 350 g
- Warranty: 3 years
Available temperature sensors
Manufacturer Information:
COMET SYSTEM, s.r.o.
Bezručova 2901
756 61 Rožnov pod Radhoštěm
Czech Republic
Phone: +420 571 653 990
Email: info@cometsystem.com
Responsible person:
Didactum® Security GmbH
Marsweg 17
48163 Münster
Deutschland
Fon: +49 - 2501 - 9 78 58 80
Email: info@didactum-security.de
