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Intech LPI-pH - Isolating pH Loop Powered Transmitter

lpi ph  

The LPI-pH is a loop powered, isolated, pH Cell input, to 4~20mA output transmitter, with integral Pt100 RTD temperaturke compensation, and LCD display of 0~14.00pH.

The LPI-pH is the device to choose when a pH probe is installed in a corrosive, damp, high earth current or electrically noisy environment. The IP67 rating of the transmitter enclosure, together with the corrosion proofed circuit board, give the LPI-pH high immunity to damp and corrosion, allowing it to be mounted close to the pH probe. Having the transmitter close to the pH probe means that the highly sensitive pH probe output signal is amplified and turned into a robust 4~20mA signal before noise exposure from long cable runs can effect it.

The unit also features internally accessible, finger adjustable, 15 turn slope and offset adjustments, for easy calibration of the pH sensor, in conjunction with the LCD Display.

The 4~20mA output from the LPI-pH can be run for long distances to better environments where standard process controllers can be used safely. The LPI-pH fills a niche where it has often been necessary to install low IP rated, dedicated pH instruments in an aggressive environment.

LPI-pH Features
LPI-pH Ordering Info

  • Isolated Input to Output 2.0kV.
  • Bi-Polar pH Cell Input.
  • IP67 Rated Enclosure.
  • Liquid Crystal Display (LCD) 0~14.00pH.
  • High Accuracy.
  • 40~200mV Output Test Signal.
  • LED Indication of Loop Current.
  • Low Cost.
  • Easy to Install.
  • Reverse Polarity Protection.
  • Internally Accessible, finger adjustable, SLOPE & OFFSET adjustments.
  • Selectable Automatic or fixed Probe Temperature Compensation.
  • Corrosion proofed Circuit Board and Components by Isonel 642. (Except Terminals and Dip Switches)

Order code   Description
  Standard Unit: 0~14pH In, 4~20mA Out, with LCD.

pH probes for use with the LPI-pH can also be ordered (for the best possible accuracy with the LPI-pH, we recommend using a probe that includes the -Pt100 sensor option).

Aegis Sales & Service is Australia's leading supplier of Portable and Fixed Gas Detection, Lone Worker, Height Safety, Confined Space Equipment and process Instrumentation. We also specialise in the sale of breathalysers, drug testing kits and general safety equipment including fire safety, first aid, rescue equipment plus plenty more. Our versatile service team can carry out calibrations, inspection and maintenance of portable and fixed gas detectors, height and roof safety equipment, confined spaces rescue equipment, breathalysers, temperature/process control equipment and many other items in either our workshop or onsite by arrangement. If you're in need for something temporary we hire out a range of equipment for short and long term use. Need something built? We create and design custom fabrications in our workshop to help with all your safety needs.


Aegis Sales & Service are excited to announce the purchase of Procon Instrument Technology through its parent company Aegis Safety Pty Ltd. This transaction will be completed by the 30th June 2017.

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Aegis Sales and Service (sml)   Aegis Safety Pty Ltd trading as Procon Instrument Technology   Aegis Safety Pty Ltd trading as Techinspect   Aegis Safety Pty Ltd trading as Breathalyser Shop   Aegis Safety Pty Ltd trading as Aegis Fabrication & Maintenance


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