PR 3111 Isolated Temperature Converter for Thermocouples

The PR 3111 Isolated Temperature Converter for Thermocouples is a precision temperature signal conditioning module that converts standard thermocouple (TC) inputs into isolated, high-integrity analog voltage or current outputs. Ideal for industrial automation, process control, and SCADA systems, this compact DIN-rail mountable module delivers exceptional measurement performance while protecting control equipment from noise, transients, and ground loop interference. The 3111, from PR electronics, supports common thermocouple types J and K with high accuracy, better than 0.05 % of span, across a wide range of calibrated temperature ranges selectable via DIP-switches.

• Excellent accuracy, better than 0.05% of span
• Slimline housing of 6 mm
• Excellent EMC performance and 50/60 Hz noise suppression
• Selectable < 30 ms / 300 ms response time
• Pre-calibrated temperature ranges are selectable via DIP-switches

PR 3111 Isolated Temperature Converter for Thermocouples from PR electronics

Built for demanding environments, the PR 3111 temperature converter features three-port galvanic isolation up to 2.5 kVAC, robust surge suppression, and excellent EMC immunity that meets NAMUR NE21 recommendations. Thus, it ensures stable, noise-free data even in electrically harsh installations. A selectable fast response time (<30 ms) or damped mode (300 ms) provides flexibility for both dynamic and smooth measurements.

• The PR 3111 temperature converter measures standard thermocouple J and K temperature sensors and provides an isolated analog voltage or current output.
• High 3 port isolation provides surge suppression and protects the control system from transients and noise.
• < 30 ms fast response time with simultaneous sensor error detection when selected.
• Selectable 300 ms response time when signal dampening is needed.
• Selectable internal/external CJC.
• High galvanic isolation of 2.5 kVAC.
• Meeting the NAMUR NE21 recommendations, the 3111 provides top measurement performance in harsh EMC environments.
• The device meets the NAMUR NE43 standard defining out of range and sensor error output values.

PR 3111 Isolated TC Temperature Converter

The slim 6.1 mm housing allows high-density DIN-rail mounting, up to 163 units per meter, while a visible green LED indicates unit and sensor status at a glance. Flexible 24 VDC power options and comprehensive terminal protection against over-voltage and polarity errors make the PR3111 isolated temperature converter for thermocouples reliable and easy to install. With approval for safe areas as well as Zone 2/Division 2 hazardous areas and marine applications, it’s a dependable choice for precision temperature measurement in industrial systems.

• Powered by 24 VDC (±30%) via power rail or connectors.
• Excellent conversion accuracy in all available ranges, better than 0.05% of span.
• A visible green LED indicates the operational status of the unit and the input sensor.
• All terminals are protected against overvoltage and polarity error.
  
• Excellent signal/noise ratio of > 60 dB.
• The 3111 can mount in the safe area or in Zone 2 / Division 2 hazardous areas.
• Features approval for marine applications.

Mounting, Installation, and Programming

• Selectable DIP-settings for easy configuration of more than 1000 factory calibrated measurement ranges.
• The narrow 6 mm housing allows up to 165 units to be mounted per meter of DIN rail, without any air gap between units.
• Wide ambient temperature range of -13 to 158˚F (-25 to 70˚C).