Temp-485-Pt100, Temp-485-2xPt100

Czech version

English version

Temp-485-Pt100 communicates over 4-conductor busbar. To one busbar it's possible to connect parallely up to 31 sensors. The busbar uses 4 conductors, two with a standard RS-485 line (up to 1200 m), the other two are intended for powering sensors.

• Converter: Signal from Pt100 is transferred to RS-485. Thermal sensor is usually located outside the converter box.
   
• Thermometer: Contains both thermal (Pt100) sensor and converter to RS-485.

The product signature Temp-485-Pt100 covers several device versions, as listed below, that are available. They are mostly converters (Pt100 to RS-485), because a thermal sensor is located outside the device unit. The "Box" version contains the thermal sensor on a box, which means it represents whole thermal sensor.

• Temp-485-Pt100 „Box“ version [600 113]
  The thermometer consists of a box for wall mounting, which contains the RS-485 converter / temperature sensor and the Pt100/A sensor itself. The thermal sensor is assembled on the top of the rod on the plastic box with IP65 shielding protection.
  
  
• Temp-485-Pt100 „Cable“ version [600 114]
  The thermometer consists of a box for wall mounting containing RS-485 converter / thermal sensor. The Pt100/A sensor itself is attached on a 2m long cable and is a part of the shipment.
  
  
• Temp-485-Pt100 „Head“ version [600 110]
  The „Head“ version is a converter unit of the temperature monitored by an external thermal sensor to the RS-485 data bus. The converter's mechanic construction is intended for mounting to a unified "B" thermometer's head. For thermometer's construction it is necessary to connect an external Pt100 thermal sensor - platinum sensor (not part of the shipment) which is connected by two or three conductors.
  
• Temp-485-Pt100 „DIN“ version [600 111]
  The „DIN“ version is a converter unit of the temperature measured by an external thermal sensor, to the RS-485 data busbar. The converters mechanic construction is intended for mounting to a DIN molding.
  For thermometer's construction it is necessary to connect an external Pt100 thermal sensor - platinum linear sensor (not part of the shipment) which is connected by two or three wires.
  
• Temp-485-2xPt100 „DIN“ version [600 112]
  The unit is identical to the Temp-485-Pt100 „DIN“ version but allows connection of two external Pt100 thermal sensors to a single unit. One box therefore responds at two different addresses at the RS-485 line.
  
• Pt100 - the PT30 type [600 115]
  Individual Pt100 thermal sensor for connection to converters. PT30 contains a thermal sensor in a metal rod made of stainless material and is connected by a four-wire cable with a teflon insulation, metal covering with silicone insulation
  
• Temp-485-Pt100 version „Frost“ [600 309]
  Temperature probe for extremely low temperature measurements, equivalent to "Cable" version. The probe for measurements from -190°C and connecting cable are part of the supply.

Temp-485-Pt100 uses for temperature measuring a standard platinum thermal Pt100 sensor. The thermal sensor can by either a mechanical part of a thermometer in a measuring stem or external sensor, connected by two or three wires.

Application

• Industrial measuring systems with accurate temperature measuring.
• Refrigerator measuring systems with embedded thermal sensors
• Accurate temperature measuring in wide range
• Wide measuring systems with lots of measuring points
• Climatization state measuring and measuring of living conditions in intelligent buildings
• Independent measuring in food warehouses and agricultural crops storage buildings
• Grocery storehouses and premises, hard measuring conditions..
• Thermal and humidity monitoring in pharmaceutical storages
• After connection to Poseidon (all models with RS485 bus) – temperature transmission over Ethernet or Internet
• After connection to Poseidon models 2XXX – possible logging of up to 100 000 values into internal Flash memory.
  

Basic properties

• Temperature measuring within the range of -55°C to +640°C
• Measuring accuracy cca ± 0,2°C (± 0,3°C if the „Head“ and „DIN“ versions are not calibrated with actual thermal sensor .
• Possible connection of one or two external Pt100 or Pt1000 sensors (Pt100 / Pt1000 defined by model - ask for more)
• External Pt100 thermal sensors can by connected by two or three conductors.
• Each sensor is tested and calibrated from factory, at extra cost it's possible to supply calibration protocols
• Up to 31 sensors parallely at one busbar
• Suitable for factory environment, RS-485 line communication (up to 1000m distance)
• Minimal power consumption, possible power supply by unstabilized voltage.
• The sensors works with SNMP thermometer Poseidon

Downloads & Datasheets

Temp-485-Pt100 manual - Detailed datasheet + manual     Poseidon / Sensors - Other sensors compatible with Poseidon system

Temp-485-Pt100 „Box“ version

Temp-485-Pt100 in „Box“ version represents thermometer designed for wall mounting. To mount it you can use two holes in the box.

Basic parameters + Outside dimensions 58 x 165 x 35 mm + Shielding level whole thermometer: IP68 / busbar: IP10 + Operating temperature range of the converter -25...+ 80°C + Input signal range -30 .. 200 °C + Input sensor connection 2 conductors, calibrated from production + Error in measurement: ±0,2°C   Communication + Communication parameters 9600 8N1 + Communication line RS-485 without termination + Temperature measuring period 1x / 810 ms   Others + Voltage 8V to 28V DC, protection against reversing of polarity + Power consumption - consumption during measuring typically 2 mA - consumption during transmission to RS-485 typically 60 mA + Conductor connection connection block, CUU 2,5 mm2   Type tests - Main type test according to ČSN EN 770 - EMC examined according to ČSN EN 61326-1 - Safety examined according to ČSN EN 61010-1

Temp-485-Pt100 „Cable“ version [600 114]

The mechanic dimensions of this converter box version are the same as those of "Box" version. The Pt100 thermal sensor in the "Cable" version is not located on the box, but it is placed on a 2 meter long cable outside the box.

The cable for power supply, cable with the RS-485 line and the sensor are thus connected through one cable grommet. The sensor is connected at a 2 meter long Pt30 cable, which is part of the shipment.

Note: technical parameters are fully identical with used "Head" version.

Temp-485-Pt100 in „Head“ version

Temp-485-Pt100 in the „Head“ version represents a converter from Pt100 to a RS-485 line, designed for mounting to a unified thermometer's head "B".

For creating a thermometer it's necessary to connect to the converter an external thermal Pt100 sensor - a platinum sensor connected over two or three conductors. A converter communicates over RS-485 line with a superior station with baud rate of 9.600 Bd and 8N1 parameters. The Pt100 sensor is not part of the shipment.

The converter is suitable for usage in industrial environment.

Basic parameters + Outside dimensions ø 42 / height 29 mm + Shielding level Case: IP68 / Busbar: IP10 + Converter's operating temperatures -25...+ 80°C + Input signal range range –55 .. 640 °C + Supported sensors Pt100 and Pt1000 according to IEC 751 + Connection of input sensor 3 or 2 conductors  - effect of supply resistance < ± 0,1°C + Error in measurement 0,03% of the range   Communication + Communication parameters 9600 8N1 + Communication line RS-485 without termination + Temperature measuring period 1x / 810 ms   Others + Power supply 8V - 28V DC, protection from reversing polarity + Voltage consumption - consumption during measuring typically 2 mA - consumption during transmission to RS-485 typically 60 mA + Conductor connection connection block, CUU 2,5 mm2   Type tests - Main type test according to ČSN EN 770 - EMC tested according to ČSN EN 61326-1 - Safety tested according to ČSN EN 61010-1

Temp-485-Pt100 in „DIN“ version

The „DIN“ version represents a converter of the temperature, measured by external thermal sensor, to RS-485 data busbar. The converter mechanic construction is designed for mounting to a standard DIN molding.

For creating a thermometer it's necessary to connect an external thermal Pt100 sensor to the converter - a platinum sensor (not part of the shipment) connected over two or three conductors. A converter communicates over RS-485 line with a superior station with baud rate of 9.600 Bd and 8N1 parameters. The Pt100 sensor is not part of the shipment.

The converter is suitable for usage in industrial environment.

Basic parameters + Outside dimensions 22,5 x 85 x 70 mm + Shielding level Case: IP40 / Busbar: IP10 + Operating temperatures of the converter -25...+ 80°C + Input signal range range –55 .. 640 °C + Supported sensors Pt100 and Pt1000 according to IEC 751 + Input sensor connection 3 or 2 conductors  - Effect of supply resistance < ± 0,1°C + Error in measurement 0,03% of range   Communication + Communication parameters 9600 8N1 + Communication line RS-485 without termination + Temperature measuring period 1x / 810 ms   Others + Power supply 8V - 28V DC, protection from reversing of polarity + Power consumption - consumption during measuring typically 2 mA - consumption during transmission to RS-485 typically 60 mA + Conductor connection connection block, CUU 2,5 mm2   Type tests - Basic type tests according to ČSN EN 770 - EMC tested according to ČSN EN 61326-1 - Safety tested according to ČSN EN 61010-1

Temp-485-2xPt100

The „Temp-485-2xPt100“ type is a converter of the temperature, measured by two external thermal sensors, to RS-485 data busbar. The converter mechanic construction is designed for mounting to a standard DIN molding.

For creating a thermometer it's necessary to connect to the converter two external thermal Pt100 sensors - a platinum sensor (not part of the shipment) connected over two or three conductors. A converter communicates over RS-485 line with a superior station with baud rate of 9.600 Bd and 8N1 parameters. The Pt100 sensor is not part of the shipment. The converter is suitable for usage in industrial environment.

The converter uses two communication addresses represented by two alphabetic letters. The first thermal sensor is always connected to address given by a capital (e.g. „A“), the second thermal sensor is connected to the address given by a lower letter (e.g. „a“). Both addresses are assigned at the time by a command over RS-485. As a SW the converter behaves as two converters for one thermal sensor.

Basic parameters + Outside dimensions 22,5 x 85 x 70 mm + Shielding level Case: IP40 / Busbar: IP10 + Converter operation temperatures -25...+ 80°C + Input signal range range –55 .. 640 °C + Supported sensors 2x Pt100 according to IEC 751 - channels are not mutually optoisolated + Input sensor connection 3 or 2 conductors  - Effect of supply resistance < ± 0,1°C + Error in measurement 0,03% of range   Communication + Communication parameters 9600 8N1 + Communication line RS-485 without termination + Temperature measuring period 1x / 810 ms   Others + Power supply 8V - 28V DC, protection from reversing polarity + Voltage consumption - consumption during measuring typically 2 mA - consumption during transmission to RS-485 typically 60 mA + Conductor connection connection block, CUU 2,5 mm2   Type tests - Main type test according to ČSN EN 770 - EMC tested according to ČSN EN 61326-1 - Safety tested according to ČSN EN 61010-1

Pt100 temperature sensor - PT30 type

PT30 is a resistance thermal sensor of Pt100 type, recommended for connection to thermometers listed above. The thermal sensor is situated in the metal rod made of stainless material and connected by 4-conductor cable. Original cable contains 4 conductors for 2,3 or 4 conductor sensor connection.

The sensor is typically attached to the measured system by a tightening belt.

Temp-485-Pt100 "Frost"

Special-purpose set consisting of a converter + temperature sensor mounted on a 3m cable, intended for measuring extreme negative temperatures. The converter is fitted in a box with mechanical dimensions corresponding to the "Box" version. The temperature sensor is located outside of the box. The sensor cable and the RS-485 bus lead through a single cable gland.

The sensor is mounted on a cable 3m long for placing in the low-temperature environment.

• Sensor: 1 x Pt100 / 2-wire connection
• Cable and sensor temperature range:
  • General Pt100 probe: -200...+400 °C
  • General Pt1000 probe: -150...+400 °C
  • Delivered probe & cable: -190...+200 °C
• Sensor assembly dimensions: diameter 7 mm, length 60 mm
• Cable: 2 wires + shielding, length 3.5 m, PTFE insulation / shielding / PTFE

Note: Technical specifications not listed above are equivalent to those of the "Head" version of the converter.

Basic characteristics of the PT100

• When using longer wire to the thermal sensor (more than 1-2 meters) you can improve the accuracy by using higher wire diameter of the connecting wires.
• When using 3 wire connection, its necessary to provide connection via three wires of the same diameter and connection type.
   
• What to choose, Pt100 or Pt1000?
  Through the Pt100 sensor flows more measure current so we recommend it for using in industrial environments. If you need to connect a measuring sensor over thin wiring, better use Pt1000 sensor.
  

Communication protocol

Sensors work in the query - respond mode, the command response time on the RS-485 line is 20ms at maximum. Communication proceeds in the Master - Slave mode by default. Poseidon contains a native support for assigning address to these sensors.

• Communication busbar: RS-485
• Address range: “A” .. “Z” a “a” ..“z” - (except „T/t“, 25 addresses)
• Address setting: Over RS-485 line, only one sensor on a line while setting the address..
• Communication: ASCII, detailed description in the datasheet..
• Serial transfer parameters: 9600 baud, 8N1

All protocol commands can are described in the datasheet..

FAQ & Support

Q: Can these sensors be used separately or they must be used only with Poseidon?
A: No, the sensors can be used for any application, the manual contains the description of the protocol which they are based on and they can be used separately from the Ethernet converter Poseidon.

Q: Which SW should I use?
A:  On request, we will advice you, which program to use if using sensors separately. There are several PC programs using compatible communication protocol.

Q: Are or will be available more sensors with this protocol?
A: Yes, we work on more sensors. There is already available converter for connection of general current loop 4-20 mA, voltage 0..10V etc.

Q: Is there any SW solution to log data from these sensors independently of PC?
A: Yes, the sensors can be connected to the Poseidon2 system, which manages logging values. Log files are then available over Ethernet network via HTTP protocol in CSV format.

Q: Can you supply calibration protocols for the sensors as well?
A:  Yes, but details are dependent on concrete sensor, amount etc.

Q: Can you supply the sensor mentioned in some modification?
A: Yes, but this service is available for our current customers. Our main product is the Poseidon system, not different mounting methods for the sensors and such..

Ordering sensors

Sensor samples are already available! Products are in stock in several pieces most of the time. The price can be found on the Pricelist page.

Certificate of calibration

Sensor sample was calibrated in several certification laboratories. .
All calibration protocols are stored in file: Temp-485-Pt100-Box_calibration_sheet.pdf

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