Networked PT100 Temperature Sensor

A PT100 is a resistance thermometer with a platinum element reading 100 Ω at 0 °C. Platinum's resistance-versus-temperature curve is unusually linear, repeatable, and near-unchanged over years, which is why PT100 is the de facto standard wherever accuracy and long-term stability decide the process — pharmaceuticals, food, oil and gas. The 3-wire connection compensates for lead resistance, so the probe can sit far from the device and right at the process point without the cable length turning into a temperature error.

Key features

• −50 to 250 °C measuring range

• Platinum element with high accuracy and long-term stability

• 3-wire hook-up compensates for lead resistance

• Own IP address and built-in web page

• Powered by PoE or a 48 V adapter

• DHCP or a static IP address

• SNMP monitoring in PRTG and SolarWinds

• Alerts by email, internal relay and external siren

Connectivity

• Own IP, built-in web page, HTTP/HTTPS

• PoE or 48 V adapter over a single network cable

• SNMP output for PRTG, Zabbix and SolarWinds

Where it is used

• Process temperature in oil, gas and petrochemicals

• Production and storage temperature in pharma and food

• Boilers, heat exchangers and turbines in power plants

• Furnaces and heat-treatment lines

• Cold stores and clean rooms that need calibration records

• Oil and bearing temperature on rotating equipment

Installation

Give the probe solid thermal contact with the measuring point and route its cable away from power runs — a resistive signal picks up noise easily.