Merck, 22807, GOW-MAC® Miniature Leak Detector

General description
This highly sensitive leak detector is excellent at finding leaks quickly, without the risk of contaminating the instrument associated with liquid leak detectors. Lightweight and compact, it includes a hand-held sniffer wand that allows the location of leaks to be pinpointed. This unit operates on the same principle as a thermal conductivity detector, it responds to any gas that has a thermal conductivity value different from that of air. It is easy to use, and can be operated with little or no training:
Turn the unit on
Zero out background air
Probe for leaks
This unit can be powered through an electrical cord, or by charging an on-board battery. The power cord, battery, and charger are all included.

Note: Do not use with combustible gases.

Specifications:
Detector: thermal conductivity cell with thermistors
Pump: diaphragm type
Visual Readout: LED bar graph
Zero: automatic with drift elimination
Audio Signal: audible alarm with adjustable setpoint and volume
Battery: rechargeable Ni-Cd
Battery Life: 8 hours, can be recharged to 95% of capacity in 1 hour
Dimensions: 3 1/4 in. (8 cm) wide × 1 13/16 in. (4.5 cm) high × 5 1/4 in. (13 cm) deep

Sensitivity (minimum leak rate required to produce 10% deflection of full scale):
Helium: 1.0 × 10⁻⁵ cc/sec (0.012 ft³/yr)
Argon: 1.0 × 10⁻⁴ cc/sec (0.110 ft³/yr)
CO₂: 1.0 × 10⁻⁴ cc/sec (0.123 ft³/yr)
Refrigerent: 1.0 × 10⁻⁴ cc/sec (0.123 ft³/yr)
H₂:He (40:60): 1.0 × 10⁻⁵ cc/sec (0.012 ft³/yr)

Legal Information
GOW-MAC is a registered trademark of GOW-MAC Instrument Co.