Thermometer with measuring range -40 °C to 125 °C. Bare board suitable for embedding it to larger devices. Power voltage up to 36 V. Communication via RS485 bus using ModBus RTU or spinel protocol. Bare board suitable for embedding it to larger devices. Temperature sensor is mounted directly on the PCB.
TQS4 E is an intelligent digital thermometer communicating via standard industrial bus RS485 (two wires). It can measure temperatures ranging from -40 °C to 125 °C with resolution of 0.1 °C. Measured value is sent directly in °C, so the value does not have to be converted. Thermometer does not need to be calibrated, it is ready to measure right upon connecting.
Thermometer communicates on the RS485 using ModBus RTU or Spinel protocol. It can be on the same bus with other RS485 devices. One RS485 bus can have up to 32 deices (it can be even more). Both protocols are described in the documentation including examples. Spinel also has a simple ASCII format suitable for educational purposes.
Protocols can be switched easily using the ModBus Configurator software.
Features
Thermometer with range from -40 °C to +125 °C
Resolution 0.1 °C
Accuracy ±0,5 °C within 0 to 65 °C, otherwise ±1 °C
Power voltage input 4.5 to 36 V DC
Low consumption - only 1.2 mA @ 12 V DC
RS485 communication with up to 32 devices on a single bus (more available using a repeater)
Bare electronics (PCB) to be embedded to Your device
Terminal connections using Wago 236 terminals
Wago 236 lever included in the package
Communication options
Communication using ModBus RTU or Spinel protocols (spinel is default, complete documentation is available)
Easy integration to Your systems thanks to complete documentation of protocols and standard ModBus RTU implementation
Free Wix measuring software
TDS Therm display can show temperature from three TQS4 thermometers
Measurement using TME multi allows for Ethernet access of the data
Connections
TQS4 thermometers are easily connected to various systems. Either to most industrial systems using RS485 bus or using an Ethernet, WiFi, USB, RS232 or other converter. We are happy to help you choosing other components of your system.
Converter Connection to the PC's COM port (RS232) is carried out using TC485 converter. USB connection can be made using SB485L converter. Ethernet can be connected to your system using convertors GNOME485 or Edgar (with power output to power your thermometers).
Power: One 12V DC power supply is suitable to power all thermometers.
Wiring: We recommend using a standard UTP cabling to connect RS485. Use one twisted pair for the RS485 and others for power to minimize the power losses.
Software: We supply Wix measuring software to measure, save and supervise all measured data from your thermometers. You can also easily embed TQS4 thermometers to your system - more options are described in the manual. We also supply Spinel.NET - Windows SDK for .NET environment (only with czech documentation).
Other option is to measure directly via the Ethernet converter / concentrator: TME Multi.
Differences between TQS3 and TQS4 thermometers
If you already use TQS3 thermometers, here are the key differences between the old and the new:
TQS4 has a jumper to select ModBus easily without using any software
TQS4 uses a more modern sensor with better accuracy
TQS4 has a fully backwards compatible communication protocol. The only missing part is the Dallas sensor ID (since the sensor is no longer Dallas)
TQS4 has a broader power range (4.5 to 36 V DC) as opposed to the TQS3 (7 to 20 V DC)
TQS4 has a lower consumption at 12 V (1.2 mA) than TQS3 (2-3 mA)
TQS4 has a slightly different measurement range (-40 °C to +125 °C) from the TQS3 (55 °C to 125 °C)
TQS4 has a better accuracy (±0.5 °C ranging from 0 to 65 °C, otherwise ±1 °C) than TQS3 (±0.5 °C ranging from -10 to 85 °C, otherwise ±2 °C)
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