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Modbus Temperatur Sensors

What is a MODBUS temperature sensor?

A MODBUS temperature sensor is a temperature sensor paired with a digital transmitter. It can communicate with a master unit by the digital MODBUS protocol.

Why Should You Use MODBUS?

With our MODBUS RTU sensors and transmitter modules, you can connect several devices in a line, occupying only one input of your PLC. In addition, you save the expensive analog input cards for your PLC, since most of them already have a serial RS485 interface. Moreover, you can access multiple measured values per device. This not only enables the use of a combined RS485 temperature humidity sensor; but also the access of valuable service data that can be useful for predictive maintenance.

Modbus RS485 temperature sensors with integrated Modbus RTU converter. Our Modbus RTU temperature sensors include a Modbus temperature transmitter and are available in extremely compact designs

MODBUS Sensors and Converters

Discover Products

MODBUS RTD Pt100/Pt1000 Transmitter Module

MODBUS RTD transmitter module for Pt100/Pt1000

Series: EVO040
Measuring range: -200 to 850 °C
Protocol: MODBUS RTU (RS485)
Connection: 2x M12 connectors
RS485 temperature sensor Pt100 MODBUS RTU

Pt100 MODBUS RTU with threaded process connection

Series: ESTP
Measuring range: -50 to 110 °C
Protocol: MODBUS RTU (RS485)
Connection: M12 connector
MODBUS Pt100 RS485 temperature sensor

Pt100 MODBUS RTU with mineral insulated probe

Series: EOSI
Measuring range: -50 to 500 °C
Protocol: MODBUS RTU (RS485)
Connection: M12 connector

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Jacopo Baronio

Jacopo Baronio

MODBUS RTD Pt100/Pt1000 Transmitter Module

I2C to MODBUS converter module for sensors

Series: EVO032
Measuring range: -/-
Protocol: MODBUS RTU (RS485)
Connection: 2x M12 connectors
I2C temperature humidity sensor for MODBUS converter

I2C temperature humidity sensor (IP67)

Series: EVO033
Temperature: -40 to 125 °C
Humidity: 0 to 100% RH
Protocol: I2C
Connection: M12 connector
12C Ambient light sensor

I2C ambient light sensor

Series: EVO035
Measuring Range: 0 to 167 lx
Protocol: I2C
Connection: M12 connector

Accessories for Modbus sensors

To configure our Modbus RTU temperature sensors and transmitters you need the configuration kit EVOPLATFORM SET. The set contains a USB adapter and software for Windows PC. To connect several devices with each other, we recommend our T-distributor for Modbus RS485 cables.

With MODBUS you can connect multiple modbus temperature sensors with rs485 interface in one single line to a PLC

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Fill out the form and we will get back to you within two business days. Or simply give us a call right away!

Contacts

Jacopo Baronio

Jacopo Baronio

Modbus temperature sensor: Frequently asked questions

Digital communication is less susceptible to noise and signal loss. In addition, several sensors and devices can be connected with only one connection line (RS-485). This simplifies installation and saves costs. By the way, this also applies to PLCs: most PLCs are already equipped with a serial RS485 interface, so you no longer need analogue input cards.

Using Modbus, transmitters and sensors can be configured, monitored and diagnosed remotely. This is a significant advantage over analogue transmitters.

The devices can also transmit additional information such as device status, error codes or any calibration data. And of course a second measured value, such as with our combined temperature and humidity sensor.

Yes, our Modbus RTU sensors and transmitters are equipped with four LEDs so that the status of the devices can be seen at all times.

Our Modbus RTU temperature sensors and transmitters are available in three different designs:

As a pure Modbus RTU transmitter with M12 connectors on both sides. This transmitter is compatible with all Pt100 / Pt1000 temperature sensors with M12 connectors. If you need a matching sensor, we recommend our sheathed resistance thermometers.

As screw-in sensor with integrated Modbus RTU transmitter. The screw-in sensor is a good choice if you want to insert the sensor into the process using an existing thread.

As a sheathed resistance thermometer with integrated Modbus RTU transmitter. The sheathed probe is a good solution for particularly narrow installation spaces because it is flexible. It is also extremely robust and has a very wide temperature range.

The transmitters and probes can be configured using the dedicated configuration kit EVOPLATFORM SET. The kit contains a USB adapter and software for Windows PC.

Generally speaking, you can measure very high temperatures of up to 500 °C. Our most temperature resistant Modbus probe is the version with mineral insulated probe. Bear in mind that you must choose a sufficiently long sensor to keep the electronics and the plastic away from the heat. The PCB as the most temperature-sensitive component can withstand temperatures of up to 85 °C. Our experts are happy to advise you on choosing the right length!

We manufacture our Modbus RTU temperature sensors at our headquarters in Cremona, Italy. For you, this means short distances, uncomplicated logistics and fast delivery times

Regarding the response time of a sensor, the following rule of thumb applies: If you double the diameter, you quadruple the response time. So choose the diameter wisely!

As with all temperature sensors, the immersion length should be at least 5x the diameter of the sensor to avoid thermal bridges.