Latest News from Pi

Keep up to date with the latest news from Process Instruments – your specialist supplier of analyzers and controllers for the water and related industries.

Process Instruments Grows Again by 19.4%

novembre 28th, 2017|0 Comments

Pi's turnover over the past decade Process Instruments (UK) Ltd. Is proud to announce that with the ongoing support [...]

CRONOS® Controller gets an Upgrade

settembre 19th, 2017|0 Comments

The CRONOS® controller from Process Instruments has just got even better! Not only is it an affordable, flexible analyzer and water [...]

Dissolved Oxygen Meters from Pi get new Airflush

settembre 6th, 2017|0 Comments

Inside layout of Airflush, A - Power supply, B - Air receiver, C – Air pump, D – Valve, E [...]

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Tel: +44 (0)7908 765113

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Karen Thirlwell

Head Office Contact

Pi Featured Products

Our most popular analyzers and controllers for water and related industries

Chlorine Analyser


The HaloSense range is suitable for total or free residual chlorine monitoring or control applications in potable water, seawater, process water, swimming pool water, waste water, food washing, paper and pulp, etc.

Suspended Solids Monitor

New SoliSense® 2017

Whatever level of suspended solids from 2 NTU all the way up to >8% solids, the New SoliSense® is the solution and is unique in its ability to measure from low NTU to percent solids in one sensor.

Dissolved Oxygen Analyzer


The OxySense range of online DO meters utilize the very latest and best optical DO sensor available in the world today.

Conductivity Meter


Pi’s ConductiSense range of online conductivity meters utilize the very latest and best conductivity sensors available in the world today for measuring the online conductivity of any aqueous solution.

Automatic Cleaning System

Automatic Sensor Cleaning System

Process Instruments were approached in 2008 by a customer who was having to change their pH sensor every week at massive cost due to the fouling of the sensor. In response Pi developed the Autoflush.