Description

Gastec KS Oxygen Sensor

Gastec KS Oxygen Sensor (commonly designated as part of the KS series / KS-25 / KS-25D sensor module family) is a galvanic cell oxygen sensor engineered for Gastec oxygen and multi-gas detectors (such as the GOA-7H-S, GOM-3A, and related handheld monitoring equipment).

It operates as an electrochemical cell that self-generates an electrical output directly proportional to the partial pressure of ambient oxygen in personal breathing zones and hazardous industrial environments.

Gas sensors

GASTEC is engaged in research and development of world-leading catalyst technology and power collection technology, and has realized a variety of highly sensitive, miniature sensors. These sensors detect the concentration of oxygen concerning which even a minute percentage change can affect the human body. They can also detect colorless and odorless toxic gases which cannot be detected by the five senses, and flammable gases which can bring about an explosion or other disaster. In this way, we promote the ability to visualize danger.

Specifications

Parameter	Specification
Manufacturer	Gastec Corporation
Model Designation	KS Series / KS Oxygen Sensor
Sensor Mechanism	Lead-Gold Galvanic Electrochemical Cell
Measurement Range	$0.0%text{ to }25.0%text{ }text{O}_2$ (Vol %)
Response Time ( $T_{90}$ )	$le 20text{ seconds}$ at $20^circtext{C}$
Expected Sensor Life	1 to 2 years under typical atmospheric operating conditions
Compatible Equipment	Gastec GOA-7H-S, GOM-3A, GOMC-3A, and GOMH-3A monitors
Operating Conditions	-10°C to +40°C (14°F to 104°F); 10–90% RH non-condensing

Features

20 x 20 x 43 21g : GO-25KS

Applications

Detector Refurbishment & Maintenance: Replacing depleted or end-of-life galvanic oxygen cells during routine instrument recalibration.
Industrial Safety Audits: Continuous ambient air monitoring in chemical processing plants, refineries, and inerted vessel storage areas.