Case Study

Pune Techtrol installs transmitters at Transworld Furtichem


Provided G-TROL transmitters and IN-TROL transmitters which have successfully been used for continuous level measurements of 33 per cent HCl.

Pune Techtrol had recently been approached by Transworld Furtichem Pvt Ltd to provide level measurement solution for storage tanks of various chemicals including 33 per cent Hydrochloric Acid (HCl). Transworld Furtichem Pvt Ltd is the manufacturer and supplier of wide range of chemical and fertilisers. Pune Techtrol had this challenging assignment as it had to offer an optimum and durable solution for level measurement for 33 per cent HCl which is reliable and cost effective.


The HCl acid is highly corrosive and toxic. Concentrated HCl releases dangerous fumes also called as acidic mists which can cause damage and cause irreparable harm to human skin, eyes, tissues or internal organs. Upon oxidising of HCl, it produces toxic chlorine gas.

Handling of HCl requires extra precautions and care. The acid and its fumes corrode most of the engineering MOCs in a very short duration of time. This dangerous substance is generally used for steel pickling (removing rust or iron oxide scale from iron or steel before further processing), producing organic compounds, water treatment chemical, oil well acidising, salt purification, household cleaner and leather processing. While handling it, one has to use protective gears like rubber gloves, boots, face shield, full suit, and vapour respirator. As such, handling and storing HCl acid presents many problems and difficulties.


Pune Techtrol provided G-TROL transmitters and IN-TROL transmitters which have successfully been used for continuous level measurements of 33 per cent HCl.

G-TROL and IN-TROL are the transmitters based on radar principle, used for measurement of the level of liquids and solids. G-TROL is a contact type of transmitter which consists of a probe connected to an enclosure containing signal converting electronics; whereas IN-TROL is a non-contact type of transmitter, unaffected by conductivity and density of the liquid, enabling level measurement up to 30 metres depth.

The tanks were of varying depths from small to large. Pune Techtrol provided them G-TROL, a contact type transmitter, fitted with PTFE coated suspended probe for small tanks having a depth of 2 metres. However, for large tanks having the depth of 10 metres, the cost of G-TROL was becoming prohibitive as Pune Techtrol had to provide a very long sensor in PTFE.

Alternatively, Pune Techtrol installed a non-contact type radar transmitter IN-TROL for large tanks. Being a non-contact type it was easy to handle and also there are no chances of corrosion damage of the instrument, hence it will serve for a long period of time.

Both types of transmitters have been successfully installed and commissioned. All these devices provided, are closely monitored by the employees of Transworld Furtichem Pvt Ltd.

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