Portable SF₆ leak detector
SF₆ LaserGasTest

Description

Insulation gas leakage detector SF₆ LaserGasTest is based on laser photo-acoustic spectroscopy. This method is well known and widely used for goals of detection of various chemicals when efficiency matters. For example, SF₆ LaserGasTest can detect the presence of about 10 ppb of sulfur hexafluoride, which is equivalent to the detection of a sulfur hexafluoride molecules of the 100 000 000 (one hundred million) of air molecules.

High speed of the gas flow and small response time of photo-acoustic detector reduce system recovery time to 1-2 seconds when high concentrations are detected. CO₂-laser as laser radiation source and spectral photo-acoustic detection method provide high SF₆ detection selectivity. It reduces the number of false alarms. The system detects only compounds having high absorption at 10.6 μm wavelength. The absorption coefficient of SF₆ is 2-3 orders higher than those of other admixtures in the air.

Special technologies, Ltd. in cooperation with HLS Hypertech Laser Systems GmbH represented at international exhibition SENSOR+TEST 2012 in Nurnberg (Germany, 21-23 May) a serial version of a brand new high-sensitive portable SF₆ leak detector - SF₆ LaserGasTest.

Today, SF₆ LaserGasTest is delivered to Russia, Japan, Germany and China. Leak detector is intended for technological leak-tightness control of the equipment and parts containing sulfur hexafluoride SF₆ for precise leakage localization.
It is important to note that insulating gas under the Kyoto Protocol relates to greenhouse gases and has a significant impact on climate change.

Applications of SF₆ LaserGasTest:
SF₆ LaserGasTest is intended for control of the equipment condition in different areas:
— on the power facilities (high-voltage gas-insulated measuring transformers of current and voltage, switchgears, high-voltage circuit breakers, SF₆ isolated high voltage cables);
— building industry (leakage testing of the SF₆-filled double-glazed windows);
— control of the fire extinguishing systems, where SF6 is used as an extinguishing substance;
— gas-filled RF waveguides leakage control;
— air-tightness control of complex, distributed pneumo- or hydraulic pipe systems.

Specification

Characteristic	Value
Detected gas	SF6
Sensitivity for SF6	1 ppb or 0.002 g/year
Range	10 ppb — 5000 ppm
Gas flow speed	0.55 l/min
Response time	< 2 s
Readness time	< 0.5 min
Leakage indication	OLED display, sound
Internal memory	16 records up to 4093 results each
Power consumption (max)	90 W
Continuous operation time	more than 8 hours
Dimensions Main block Probe Telescopic intake Flexible intake	370 × 330 × 170 mm 220 × 65 × 80 mm 220 — 980 mm 210 mm
Weight System block Probe	7 kg 0.3 kg

SF₆ LaserGasTest is designed for indoor and outdoor applications
— IP65 class of protection (in closed condition);
— mechanical shock and vibration resistant;
— gloved hand friendly operation;
— RоHS and CE compliant.

"LaserGasTest PC Application" software
— free of charge, included in package;
— results indication;
— full remote control;
— stored results management.
System requirements:
— CPU: Intel Pentium®, 1 GHz;
— RAM: 512 Mb;
— Screen resolution: 1024×768 min.;
— ОС: Microsoft® Windows® XP®;
— Microsoft® .NET Framework platform 4.0.