Portamarine
 
 
 
Portalevel - Ultrasonic Liquid Level Indicator
 
 
 

Technical Specifications 

Manufacturer 
Coltraco Ltd, Chewton Fields, Ston Easton, Radstock BA3 4BX, UK 
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 
Type 
Portalevel™ Digital 
Liquids/Gases locatable 
CO2, Halon, FM200™, NAF S III, other Halon substitutes, LPG & other liquids 
Sensor 
Ultrasonic single crystal sensor fitted with a magnetic head for hands-free operation, 16 mm x 16 mm 
Accuracy 
+/- 1.5 mm (1/16”) 
Controls 
On/Off Switch, SPA (increases transmitter receive signal) switch,“CAL” self-calibration switch 
Display 
Digital: LED and LCD digital display 
Power Supply 
4 x AA 1.5V batteries, consumption 230mA, battery life 10 hours 
Weight 
500g (1lb, 1oz) 
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 incl carrying case – 34 cm x 31cm x 18 cm, weight 3.5 kg) 
Operating Temperature 
The operating temperature of the unit, its ancillary parts, and carrying case, is -10°C to +70°C, though testing liquid gases must account for the physical critical points of the individual gases concerned under liquid level test, for example, CO2 at 31°C, and Halon at 55°C. Procedures for using the unit in tropical temperatures to account for these are provided in the Operating Instructions 
Approvals 
ISO 9001, US Department of Defence Ozone Depleting Substances Reserve Program Office Approved and selected, NATO Stock Number: 6680-99-275-5292, Det Norske Veritas accepted, supplied to US Govt MIL-STD, manufactured to BS5750 / ISO9001, UK Patent Office Trade Mark Reg No 2290334, RINA Classification Society Approval 
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 
the Portalevel™ Digital is self-calibrating 
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 
 
controls: 
 
On/Off   power control 
SPA       increases transmitter receive signal 
CAL       self-calibration switch 
 
Portalevel Defence Applications
Coltraco Naval Applications
 
Coltraco Ltd 
46 Mount Street, Mayfair, London 
W1K 2SA, United Kingdom 
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