The PLI Plus portable liquid level gauge from Class Instrumentation is designed to offer a simple, accurate, rapid and reliable method of determining the liquid level of high or low pressure CO2, Halon, FM200, Propane and any liquefied gas under pressure, without the need to move or weigh the cylinders.
The new PLI Plus is a powerful new upgrade of our original successful PLI unit. With all the features of the original PLI design, it also has the ability to boost the power by 12, enabling cylinders to be read even when they are in poor condition, or suffering from a layer of rust.
There is no reduction in health and safety, and the risk of gas leaks during servicing is eliminated as cylinders remain active and in situ.
The PLI Plus can be used on cylinders, pipe-work and any single skinned holding vessel with up to 25mm thick walls. It will also indicate the level of oil or water in a container or tank.
The PLI Plus gives accurate results by generating an ultrasonic sound wave that travels through the container and into the liquefied gas or fluid. The pulse responds differently to the presence or absence of liquid, indicating the level of the liquid.
Liquid Level Gauge Application
To find the level of liquid or liquefied gas in;
Any single skinned pressurized vessel
Liquid storage tanks
The complete PLI liquid level gauge kit includes:
PLI liquid level gauge
Protective leather case and neck strap
94cm three-section telescopic extension
125ml bottle of couplant
Full operating instructions
4 x 9v PP3 batteries
Foam-lined black polymer carry case
PLI Technical Specifications
Accuracy: ±10mmPLI liquid level gauge
Features: Power boost facility for cylinders in poor condition and cylinder wall thickness selector for thick (>4mm) or thin (<4mm) walled cylinders.
Unit Dimensions: 200 x 100 x 40mm
Unit Weight: 300g
Sensor: 1.5m cable and magnetic clamp for hands-free use
Sensor Dimensions: 95 x 60 x 60mm
Temperature Range: -10ºC to +50ºC*
94cm-long extension arm
Power Supply: 2 x 9vPP3 batteries
Battery Life: 20 hours nominal with 2 PP3 alkaline batteriesPLI liquid level gauge extension arm
Carry Case Dimensions: 450 x 370 x 100mm
Operational Weight: 700g
Shipping Weight: 2.5Kg