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Temp-485-Pt100: Industrial temperature sensors

Temp-485-Pt100 is a family of several thermometers for various conditions and temperature ranges. Temperature is measured using an accurate Pt100 or Pt1000 probe. Connects to the RS-485 bus. Temperature sensor is designed for connection to a Poseidon2 LAN measuring unit but can be used stand-alone as well.

Temp-485-Pt100 communicates over a 4-wire bus (RS-485 + power). Up to 24 sensors can be connected to a single bus with a total length of up to 1000 meters (Poseidon2 4002). The measured temperature is communicated over RS-485 in °C using a simple text-based protocol.

Temp-485-Pt100 is available in several versions. The “Box2” temperature sensor includes the temperature probe in a sensing rod. Other versions use a wall-mountable RS-485 converter and an external temperature probe on a cable.

The temperature probe is always included.

 


  • Temp-485-Pt100  Box2 
    Wall-mountable thermometer. The probe is in the tip of the rod protruding from the plastic box.

  • Temp-485-Pt100 Cable3
    Wall-mountable box with the RS-485 / temperature probe converter. A Pt100/A probe (included) is connected with a 2m cable.

  • Temp-485-Pt100 Frost2
    Thermometer for measuring low temperatures, consists of a wall-mountable box with the RS-485 / temperature sensor converter.
    A Pt100/B probe (included) is connected with a 2m cable.

 

Basic features

  • Accurate temperature measurement using a Pt100 temperature probe
  • Measured temperature range is –190 to +150°C / –310 to +300 °F (Frost2 version)
  • Up to 24 sensors in parallel on a single bus.
  • Easy to use, with a Poseidon2 system or stand-alone
  • Each probe is factory-tested and calibrated, calibration protocols can be supplied for a supplement.
  • Suitable for use in industrial environments, communication over the RS-485 bus (up to 1000m).

Applications

  • Industrial systems involving accurate temperature measurement
  • Cooling plants with built-in temperature probes
  • Accurate measurement of temperature in a wide range
  • Large-scale measurement systems with many measuring points
  • Measuring HVAC and environment conditions in smart buildings
  • Independent measurements in food and crop storages
  • Food plants and warehouses, difficult measurement conditions
  • Temperature measurements in pharmaceutical storages
     
  • Designed to work with Poseidon2 (only RS-485 enabled models) – temperature data transferred over LAN or Internet
    • Option to store the readings (data logger) and read them over LAN (SNMP, Modbus/TCP)
    • Works with the SensDesk.com online portal
    • Works with the HWg-Trigger monitoring application and the HWg-PDMS data logging application


Temp-485-Pt100 Box2

Designed for wall mounting. The probe is in the tip of the rod protruding from the plastic box. The thermometer can be wall-mounted while maintaining IP65 protection.
Main parameters
Probe temperature range –30°C to +70°C (–22 to 160°F)
Measuring element    Pt100/A
External dimensions 62 x 144 x 35 mm
Cover IP65 (EN 60 529)
Output RS-485  (recommended for Poseidon2 4002)
Note: For other parameters, see the manual

 

Temp-485-Pt100 Cable3

Temperature probe on a cable with a RS-485 converter in a wall-mountable box.

The external temperature probe (included) is on a 2m cable in a stainless-steel rod.

Main parameters
Probe temperature range –50°C to +200°C (–58°F to +390°F)
Measuring element    Pt100/A (IP67 protection)
External dimensions 62 x 95 x 35 mm
Cover IP65 (EN 60 529)
Converter operating conditions –30 to +70°C (–22 to +160°F)
Output RS-485  (recommended for Poseidon2 4002)
Note: For other parameters, see the manual

Temp-485-Pt100 Frost2

Temperature sensor for very low temperatures.
The RS-485 converter in a plastic box can be wall-mounted. The external temperature probe (included) is in a stainless-steel enclosure on a 2m Teflon cable.

Main parameters
Probe temperature range –190°C to +150°C (–310°F to +300°F)
Measuring element    Pt100/A (IP67 protection)
External dimensions 62 x 95 x 35 mm
Cover IP65 (EN 60 529)
Converter operating conditions –30 to +70°C (–22 to +160°F)
Output RS-485  (recommended for Poseidon2 4002)
Note: For other parameters, see the manual

 

FAQ & Support

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  • Is it possible to use these sensors stand-alone, or is a Poseidon unit necessary?
    Yes, the sensors can be used even without a Poseidon unit. The protocol is described in the manual. The sensors can be connected to a PLC or another device.
     
  • What software should I use to read out the values, store them in a database and plot charts?
    If you connect your sensors to Poseidon unit(s), we recommend for instance HWg-PDMS. In other cases, we will be happy to help – please fill in the form to submit your question.
     
  • Can I obtain calibration protocols for the probes?
    Yes, please ask for details.
     
  • Can I connect another version of Pt100 or Pt1000 to these sensors?
    Yes; however, please ask for details first. We recommend to use the included temperature probes.
     
  • How far can I connect these sensors?
    Total bus length is limited to 1000m. The bus must be correctly terminated – see the “Connecting the sensors (RS-485 & 1Wire)” manual.
     
  • What is the warranty?
    The standard warranty is 2 years, can be extended upon request.
  • Where can I find the prices of your devices?
    Ask our distributors, or request a quote from us (by e-mail or by filling out this form).

Ordering

 

Product Description
Temp-485-Pt100 Box2 Box2 is a temperature sensor for wall-mounting with RS-485 output. Temperature is measured by an accurate Pt100/A external probe. Temperature range is –30 to +70°C (–22 to +160°F), IP65 protection. Can be used with Poseidon2 4002. - product photo
Temp-485-Pt100 Cable3 Cable3 is a temperature sensor with a RS-485 output. The temperature probe is external, on a cable. The converter can be wall-mounted. Temperature is measured by an accurate Pt100/A external probe on a 2m silicon cable. Temperature range is –50 to +200°C (–58 to +390°F), IP67 protection. Can be used with Poseidon2 4002. - product photo
Temp-485-Pt100  Frost2 Frost2 is a temperature sensor with an external probe on a cable for very low temperatures. The converter to RS-485 can be wall-mounted. Temperature is measured by a Pt100/B external probe on a 2m PTFE cable. Temperature range is –190 to +150°C (–310 to +300°F). Can be used with Poseidon2 4002. - item photo

 

Poseidon2 – RS-485 accessories


Product Description
Sensor RJ45 MIDDLE cable RS-485 connecting cable, 0.5m. RJ45/4 terminal block pins (A, B, +, - ). (3 pairs) - photo
Sensor RJ45 LAST cable RS-485 connecting cable, 0.5m. Use for the last (or the only) sensor on the bus (2 pairs). RJ45/4 terminal block pins (A, B, +, - ).
Poseidon S-Hub Hub to connect up to 8 sensors to the RS-485 bus (8x RJ45) – photo

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Keywords

Temp-485-Pt100, Pt100, Pt1000, RS-485, temperature sensor, low temperatures

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