PR 3112 Isolated Pt100 Temperature Converter

The PR 3112 Isolated Pt100 Temperature Converter is a precision temperature signal conditioning module. It converts resistance-based Pt100 RTD inputs into high-integrity isolated analog voltage or current outputs for industrial automation and process control systems. Designed for reliable operation in demanding environments, this slim DIN-rail-mounted module, from PR electronics, delivers excellent accuracy, better than 0.05 % of span, across a wide range of factory-calibrated temperature intervals selectable via DIP-switches.

• Slimline housing of 6.1 mm
• Excellent EMC performance and 50/60 Hz noise suppression
• Selectable < 30 ms / 300 ms response time
• Pre-calibrated temperature ranges selectable via DIP-switches
• Excellent accuracy, better than 0.05% of span

PR 3112 Isolated Pt100 Temperature Converter from PR electronics

The 3112 isolated Pt100 temperature converter supports 2-, 3-, or 4-wire Pt100 sensors, thus providing a true representation of the measured temperature. Furthermore, it eliminates ground loops and protects control systems from noise, transients, and surges through high three-port galvanic isolation up to 2.5 kVAC. Its selectable fast (<30 ms) or damped (300 ms) response times offer flexibility for both dynamic and stable measurement requirements. In addition, a green front LED clearly indicates operational and sensor status.

• The 3112 isolated Pt100 temperature converter measures a standard 2-, 3- or 4-wire Pt100 temperature sensor, 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.
• A visible green LED indicates the operational status of the unit and the input sensor.
• High galvanic isolation of 2.5 kVAC.
• Excellent signal/noise ratio of > 60 dB.
• Selectable 300 ms response time when signal dampening is necessary.

Isolated Signal Converter for Pt100 RTD Inputs

Compact yet robust, the 6.1 mm housing of the 3112 allows high-density installation, up to 163 units per meter of DIN rail. Furthermore, it is suitable for safe areas as well as Zone 2 / Division 2 hazardous area installations, including marine applications. All terminals include over-voltage and polarity protection, and compliance with NAMUR NE21 and NE43 standards ensures dependable performance even in harsh electromagnetic environments.

• Flexibly powered by 24 VDC (±30%) via power rail or connectors.
• < 30 ms fast response time with simultaneous sensor error detection when selected.
  
• Excellent conversion accuracy in all available ranges, better than 0.05% of span.
• Meeting the NAMUR NE21 recommendations, the 3112 isolated Pt100 temperature converter provides top measurement performance in harsh EMC environments.
• The device meets the NAMUR NE43 standard defining out of range and sensor error output values.
  
• All terminals are protected against overvoltage and polarity error.
• The 3112 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).