High Voltage Input 2-Wire Transmitter TT238

The TT238 is a two-wire transmitter that isolates and convert high level DC voltage input into a proportional 4-20mA control signal. A single unit supports multiple voltage input ranges for extra flexibility.

Power is received from the output loop current or a local DC supply when using a three-wire connection.

The Acromag TT238 is a High Voltage Input 2-Wire Transmitter with loop power.

Firstly, it features a multirange, ±15V, ±75V, or ±150V Inputs. Along with 4-20mA sink/source outputs using a 12-32V loop power.

Secondly, setup and calibration is fast and easy. It has a convenient USB connection to PC and Acromag’s Windows configuration software. The Android App allows setup with mobile devices. Therefore,  high voltage isolation separates inputs, outputs and power from each other. Isolation protects from surges, reduces noise and eliminates ground loop errors. It is highly recommended to use a USB Isolator when configuring.

Finally the advanced signal processing capabilities and variable range of inputs/outputs of this instrument make it versatile. It can withstand hard industrial environments and operate across a wide temperature range. Also features RFI, EMI, ESD, EFT and surge protection plus low radiated emissions.

Features of the High Voltage Input 2-Wire Transmitter TT238 includes:

  • Easy setup and digital calibration via USB with Windows configuration software
  • Single unit supports ±15V, ±75V, and ±150V DC input ranges
  • Space-saving 12.5mm (0.5 inch) unit with pluggable terminals for convenient wiring
  • As well as high accuracy, linearity, stability, and reliability
  • User-selectable filtering (low, medium, high)
  • Supports sink or source output wiring Supports reverse-acting (inverse) output
  • Selectable upscale or downscale operation for sensor errors and lead-break detection
  • Also 1500V input isolation
  • NAMUR-compliant output loop current
  • Shock (50g) and vibration (5g) resistant
  • As well as mounts on Type T DIN-rail
  • Wide ambient operation (-40 to 80°C)
  • CE compliant. UL/cUL Class I Div 2, ATEX / IECEx Zone 2 approvals


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