Process Control

The range covers five instrument families: furnace viewing cameras for live combustion and refractory observation, digital panel meters for local indication and alarm duty, flow meters for water, effluent, chemicals and slurries, radar level transmitters for demanding vessels, and ultrasonic level meters for open channels, sumps and clean liquid tanks.

Choose radar when the vessel has vapour, foam, dust, heavy condensation, pressure or high temperature, or when the product density changes between batches, because microwaves travel through these conditions without loss of accuracy. Choose ultrasonic for clean liquids in vented or open vessels, sumps and channels where cost matters more than the extremes of the application. If the vessel is agitated, has internal pipework or sees dust loading, radar is the safer specification.

Yes. The camera head sits inside a water or air cooled jacket with a continuous air purge that keeps the optics clear of ash and particulate, so it remains in position during normal operation. A retraction mechanism withdraws the head automatically if cooling or purge pressure is lost, which protects the assembly during a utility failure.

The meter accepts thermocouple, RTD, 4 to 20 mA, voltage and current transformer inputs, and is scaled in the field so the display reads directly in engineering units. Outputs include programmable alarm relays for annunciation or interlock duty, an isolated analogue retransmission and RS 485 Modbus for PLC and SCADA integration.

Yes. Electromagnetic flow meters have no moving parts and a fully lined bore, so abrasive and coating fluids pass through without wear or pressure drop. For level in sumps and effluent pits, both radar and ultrasonic measure without contact, which removes the floats and probes that foul in these services.

Every instrument is configured for the declared application and supplied with calibration documentation. Flow meters are wet calibrated and issued with a certificate, and level transmitters are pre configured to the vessel profile supplied with the order so commissioning time on site is short.

Standard options are 4 to 20 mA analogue, scaled pulse, volt free relay contacts and RS 485 with Modbus RTU. Furnace camera video is delivered over the plant network to a control room workstation or to a dedicated local monitor with recording.

Yes. Sertel manufactures in Chennai and supports installations across India directly, covering application selection, commissioning assistance, calibration, spares and repair. Support comes from the engineering team that builds the instrument rather than from a third party channel.