Z-4RTD2 Resistance Thermometer Inlet Module/Modbus RTU

Z-4RTD2 Module 4 inputs from resistance thermometers to Modbus RTU
Atex approval Only safe zone
Signal output Modbus RTU protocol
Inputs RTD (Pt100/500/1000, Ni100)
Mouting 35 mm DIN 46277 guide

The Z-4RTD2 module is a four-channel converter for independent measurement of platinum or nickel thermoresistors of various types (PT100, PT1000, PT500, Ni100) with 2, 3, or 4-wire connections and 6-way isolation up to 1.5 kV.

It supports power supply from 10-40 Vdc/19-28 Vac and has status indicators for power, error, data transmission, and reception. It operates at temperatures from -20 to +70°C, with a resolution of 14 bits and a precision class of 0.05.

It provides connections through removable 4-way screw terminals, a front-facing micro USB, and a rear IDC10 connector for DIN rail mounting. It is compatible with 35 mm DIN rail mounting.

It supports RS485 interface, with communication speeds up to 115,200 bps, and utilizes the ModBUS RTU slave protocol. Communication takes place in less than 10 ms at 38,400 bps and can reach a maximum distance of 1,200 m. It supports up to 32 nodes of connectivity.

Programming can be done through plug-and-play configurator, DIP switch, system software (Z-NET4), and Android app (EASY SETUP APP). Programmable parameters include a programmable filter, rejection at 50 Hz or 60 Hz, various measurement formats, acquisition speed, and compensation for three-wire resistance.

It has 4 input channels for thermoresistors and supports a range of temperatures. It has an IP20 protection rating, weighs approximately 140 g, and has dimensions of 17.5x100x112 mm.

The case is black and made of PA6. It is CE and UL certified and complies with EN 61000-6-4, EN 61000-6-2, and EN 61010-1 standards.


Price per Unit

€287.00(Vat excluded)
€350.14(Vat included)
Qty Unit price
(Vat excluded)
Unit price
(Vat included)
1 €287.00 €350.14
15 working days
Measurement techniques

Food industry

With hygienic sensor solutions made of stainless steel, Riels® Instruments meets the high hygiene requirements in the food industry. We ensure continuous and lasting safety, solving chemical and thermal resistance challenges to protect products and processes.

Read more

Water & Wastewater

Water is a precious commodity. Monitoring of water resources is very important and Riels® Instruments supplies sensors for measuring flow, level, pressure in the water and wastewater treatment sector.

Read more

Chemical & Pharmaceutical Industry

In the chemical and pharmaceutical industry, excellence requires cutting-edge technologies. Riels® Instruments, with its wide range of instruments for industrial automation, satisfies every need, guaranteeing rigorous safety and precision standards.

Read more

Oil & Gas | Offshore

Oil and gas fuel industry and the progress of civilization. In the mining and refining sector, with tankers and pipelines, safety is paramount. We are committed to ensuring high safety standards to support the oil industry and its vital role in modern society.

Read more