GOW-MAC 21-250 Gas Leak Detector Thermal Conductivity - Untested SOLD AS IS

For sale is a GOW-MAC Instrument Co. Model 21-250 Gas Leak Detector, offered in untested, unknown condition. This is a laboratory-grade leak detector designed to quickly and accurately pinpoint gas leaks that are too small to detect with soap solution. The unit operates on the principle of thermal conductivity detection and is suitable for a wide range of gases with thermal conductivity different from air.

Key Features:

• Brand: GOW-MAC Instrument Co.

• Model: 21-250 (Deluxe Gas Leak Detector)

• Power: 115V AC, 60Hz, 80W

• Sensitivity: Detects helium leaks as small as 1.0 x 10⁻⁵ cc/sec and refrigerant leaks of 1.0 x 10⁻⁴ cc/sec

• Output: Analog meter, audio alert with adjustable volume and threshold

• Sensitivity ranges: High/Low

• Rechargeable battery operation with charger

• Probe and tubing included (see photos)

• Sturdy metal housing with carrying handle/stand

• Dimensions: Approx. 27 x 21 x 9 cm (excluding handle)

• Weight: Approx. 4.1 kg

Condition:

• Untested, unknown condition.

• Sold as-is, for parts or repair.

• Physical condition as shown in photos: some cosmetic wear and labels from previous use.

• No warranty or returns due to untested status.

Applications:
Ideal for laboratory, industrial, or gas chromatography environments where pinpointing small leaks in non-combustible gases is required.