Gastec CO601E Carbon Monoxide Sensor

Description

The CO-601E operates on the electrochemical oxidation principle. Carbon Monoxide gas molecules pass through a semi-permeable membrane and react at a working electrode. This reaction generates an electrical current directly proportional to the gas concentration.

Its cylindrical design ( $\phi$ 19 x 31 mm) allows it to fit perfectly into the slim chassis of the CM-7A, enabling the device to provide continuous TWA (Time Weighted Average) and STEL (Short Term Exposure Limit) monitoring without adding significant bulk.

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

Ultra-Lightweight: At just 7g, it is significantly lighter than older industrial-grade sensors, making it ideal for clip-on personal monitors.
High Resolution: Capable of measuring $CO$ in 0.1 ppm increments, allowing for the detection of very subtle changes in air quality.
Controlled Potential Technology: Ensures a stable zero-point and high sensitivity, reducing the frequency of false alarms caused by environmental “noise.”
Fast Response Time: Provides a $T_{90}$ response typically in under 30 seconds, ensuring workers are alerted immediately to dangerous spikes in $CO$ levels.
Low Power Consumption: Optimized for battery-powered operation, contributing to the extended runtimes (up to 3,500 hours on a single AAA) of the CM-7A unit

Specifications

Feature	Specification
Model Number	CO-601E
Detection Principle	Controlled Potential Electrolysis
Compatible Device	Gastec CM-6A / CM-7A
Standard Range	0 – 50.0 ppm
Enhanced Range	50.1 – 100.0 ppm
Dimensions	$phi$ 19 x 31 mm
Weight	7g
Target Gas	Carbon Monoxide ( $CO$ )

Comparison: CO-601E vs. CO-51EE

Feature	CO-601E	CO-51EE
Weight	7g	25g
Dimensions	$phi$ 19 x 31 mm	30 x 30 x 26 mm
Primary Device	CM-7A	CM-9A / GOMHC-3A
Resolution	0.1 ppm	1 ppm

Maintenance and Replacement

The CO-601E is a consumable component. The internal electrolyte is used up over time, typically resulting in a service life of 2 to 3 years.

Bump Testing: It is recommended to perform a functional bump test before each shift to verify sensor and alarm integrity.
Calibration: Perform a span calibration every 6 to 12 months using a Gastec CK-2 or CK-10 calibration kit.
Stabilization: After replacing the sensor, allow the monitor to remain powered on for at least 2 hours to stabilize before performing calibration.