Liquid Level Indicator and Its Technical Specs

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Coltraco Ultrasonics has been in this field for more than 27 years whereas they are known to be the supervisor of this relevant field. The Portalevel® Standard uses ultrasonic technology to identify the interface between liquid and air in any single skinned container. It therefore has none of the user problems associated with radioactive liquid level indicators which require dedicated training, storage, Health & Safety documentation, and transportation. It also replaces the traditional means of verifying liquid levels by dismantling and weighing in which the system may be closed down or disconnected, risking potential damage in so doing and involving considerable time, expense and inconvenience.

Technical Specifications of Liquid Level Indicator

Here, we have given some quick glance of the technical specifications you will get with ultrasonic liquid level indicator:

Manufacturer: 46 Mount Street, Mayfair, London, W1K 2SA, United Kingdom

Type: Portalevel® Standard, Digital, 7th Generation Ultrasonic Liquid Level Indicator

Liquids/Gases Locatable: CO2, FM-200™, Novec, Halon and Halon substitutes, NAF S III, FE-13 FE-25, water, oils, amongst others

Function: To indicate liquid gaseous extinguishants and other liquids in high or low pressure, single-skinned steel containers up to 89 mm / 3.5” thick; also functions on most types of single skinned industrial fluid containers

Accuracy: +/- 1.5 mm (1/16”)

Sensor: Ultrasonic single crystal sensor fitted with a magnetic head for handsfree operation, 16 mm x 16 mm

Controls: On/Off – Power Controls SPA – Increases Transmitter power output and increases sensitivity of receivers CAL – Self-Calibration Control

Power Supply: 4 x AA 1.5V batteries, consumption 230mA, battery life 10 hours

Display: Digital, LED and LCD digital display

Weight: 500g (1lb, 1oz)

Operating Temperatures:  The unit will work effectively in temperatures between -10C to +70C. (The ability to operate is dependent on the chemical properties of the liquids/gases being monitored.)

Dimensions: Instrument – 155 mm x 95 mm x 45 mm (6 2/3“ x 3 ¾“ x 1 25/32”) (packed ex works for shipping including carrying case – 34 cm x 31cm x 18 cm, weight 3.5 kg)

Approvals: This liquid level indicator ISO 9001, CE Mark, Classification Society Approved by RINA NATO Stock Number: 6680 99 275-5292, Det Norske Veritas (DNV) accepted, winner of Safety at Sea Award, US Department of Defence Ozone Depleting Substances Reserve Program Office Approved and selected, supplied to US Govt MIL-STD and British Navy, manufactured to BS5750 / ISO9001, UK Patent Office Trade Mark Reg No 2290334.

Warranty: The sensor is covered by a one year warranty, the unit is covered by a 3 year warranty provided that it has not been opened, tampered with or subjected to intentional or accidental damage

Calibration: Digitally self Calibrating but we recommend annual servicing and Calibration re-calibration as per the common requirements of company certifications.

Accessories: “Wet” and “Dry” sensors for poor condition and good condition cylinder surfaces respectively, extension rod for 2-3-4 multi-banked cylinder row installations and pipe work.

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Come say hello at our Technical Laboratory.

Coltraco Ultrasonics
NETPark Research Institute
Joseph Swan Road
TS21 3FB

United Kingdom


Monday - Friday (excluding bank holidays) from 8:30am to 6:00pm, UK.

Tel (Sales & HQ): +44 20 7629 8475
Tel (Technical): +44 1740 618 240