Gastec G Oxygen Sensor

Description

The G sensor operates on the galvanic cell principle, functioning as a self-powered electrochemical battery. Oxygen from the environment diffuses into the cell and triggers a chemical reaction that generates a voltage proportional to the oxygen concentration.

Because it is a galvanic cell, it requires no external power to generate its signal and has no warm-up time. The sensor’s cylindrical housing $\phi$ 36 x 38 mm is specifically designed to fit the internal manifold of the GOH-1A and GOC-1A detectors, ensuring a secure, air-tight seal for diffusion-based sampling.

Brand

Gastec

Although, technology is always evolving, one demand on our products never changes: the demand for customer safety. Whenever we contribute to customer safety, we are presented with an opportunity to develop further.

GASTEC holds this corporate creed of safety and development in high esteem, as it strives to grow while always putting customer safety first.

Features

Galvanic Cell Technology: Self-generating signal that is active the moment oxygen is present; no electrical bias required.
Lightweight Construction: At 21g, it reduces the overall weight of the host monitor compared to older, heavier sensor models.
Instant Readiness: Requires no polarization or warm-up period, allowing for immediate safety checks in potentially oxygen-deficient areas.
Stable Linear Output: Engineered to provide a consistent electrical signal across its full measurement scale, ensuring the digital readout remains accurate.
Proven Durability: Designed to maintain performance in standard industrial environments with a typical temperature range of -10°C to 40°C.

Applications

Diffusion Manifold Integration: The G sensor is applied by seating it into the internal sensor receptacle of the GOH-1A or GOC-1A.
Installation: Open the monitor’s sensor compartment and connect the sensor lead pins to the internal circuit board. Ensure the sensing membrane is facing the diffusion inlet.
Immediate Use: Since this is a galvanic cell, no polarization is needed. However, it is good practice to allow the sensor to reach thermal equilibrium with the environment for 3 to 5 minutes after installation.
21% Span Calibration: Perform a “Fresh Air Calibration.” In an environment known to have normal oxygen levels, adjust the monitor to read 20.9%.
Maintenance Check: If the monitor fails to reach 20.9% during calibration or if the “Sensor Life” indicator triggers, the internal electrolyte/lead anode is exhausted, and the G sensor must be replaced.