What gases can this analyser measure?

This model is designed to measure oxygen (O₂) and carbon dioxide (CO₂) simultaneously. Buyers should confirm specific measurement ranges with the seller.

Is this unit suitable for continuous monitoring?

While designed for reliability, its transportable nature suggests suitability for both spot checks and potentially continuous monitoring, especially with its analogue outputs. Continuous operation would depend on the specific application and maintenance schedule.

How is calibration performed?

Calibration for units of this type is typically straightforward, often performed via a front panel keypad using certified calibration gases to ensure accuracy.

What kind of sample preparation is required?

It is crucial that the sample gas is clean, dry, and non-condensing to protect the internal sensors and ensure accurate readings. Filters or dryers may be required depending on the sample source.

Can this analyser be integrated with other systems?

Yes, units of this type commonly feature analogue outputs (e.g., 4-20 mA) which allow for integration with PLCs, data loggers, or other process control systems.

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Hitech Instruments - GIR250 Gas Analyser

Name: GIR250 Gas Analyser
Brand: Hitech Instruments
SKU: 240850/7B
Availability: InStock

Price: Contact seller for price

This listing is for the Hitech Instruments GIR250 Gas Analyser

The unit is in full working condition and is ready for immediate use

The GIR250 is a bench‑top / transportable analyser designed to measure oxygen (O₂) and carbon dioxide (CO₂) simultaneously in gas samples.

It is made by Hitech Instruments (now part of the MTL / Eaton group).

Its design emphasizes ease of use, reliability, and low maintenance cost.

Other supporting features:

The instrument can be programmed with pass/fail criteria for each gas (alarms).

It provides analog outputs, typically 4–20 mA, for external logging or control systems.

Calibration is designed to be simple (via the front panel keypad) to reduce training burden.

The O₂ galvanic cell is user-replaceable (i.e. maintenance can be performed in the field).

Mechanical, Electrical & Operational Details

The GIR250 is housed in a rugged, transportable case (lab-style) so it can be used as a benchtop or mobile analyser.

Sample inlet and outlet connections use 0.25″ (~6 mm) tubing.

The sample system should avoid condensation and contaminants; non‑condensing sample environment is required.

Operating ambient temperature: –5 to +40 °C (for non‑condensing conditions)

Power / interface: standard for bench‑top analysers (the catalogue doesn’t always detail it, but likely mains or DC supply, suitable for lab use)

Typical Applications & Suitability

Because it can measure both O₂ and CO₂ in a single unit, the GIR250 is used in applications such as:

Respiration / breathing gas analysis / Douglas bag analysis (i.e. in physiological or experimental gas mixture measurement)

Fermentation / bioprocess monitoring (where O₂ and CO₂ both matter)

Gas mixture / inertisation / process gas quality (checking gas purity, calibrating mixtures)

It is not primarily intended for measuring very low trace levels (ppm-level) of O₂ or CO₂ unless its ranges are suitably adapted or specified. The design is more for percent-range analysis

Cambridgeshire, United Kingdom

5,791 km away

Model Number

GIR250

Stock Number

240850/7B

Machinery Masters View

Typical context for this category of equipment. Always confirm specifics with the seller.

Applications & Use Cases

Monitoring gas composition in controlled atmosphere storage for food preservation.
Analysing gas mixtures in fermentation processes within biotechnology.
Checking gas purity in medical and pharmaceutical gas supply systems.
Environmental monitoring for O₂ and CO₂ levels in industrial settings.
Quality control in packaging operations where gas flushing is used.

Typical Specifications

Typical gas measurement range: Units of this type commonly measure O₂ from 0-100% and CO₂ from 0-100%, or specific sub-ranges depending on the sensor configuration.
Measurement principle: Typically uses a galvanic cell for oxygen and an infrared sensor for carbon dioxide.
Sample connections: Commonly uses 0.25" (approximately 6 mm) tubing for sample inlet and outlet.
Power supply: For this class of benchtop analyser, a standard mains power supply (e.g., 230V AC, 50Hz for UK operation) or a low-voltage DC supply is typical.
Output signals: Units commonly provide analogue outputs, such as 4-20 mA, for integration with external control or data logging systems.
Operating temperature range: Typically designed for operation in ambient temperatures ranging from -5 to +40 °C, assuming non-condensing conditions.
Maintenance: Features like user-replaceable oxygen sensors are common, reducing the need for specialist service calls.

Frequently Asked Questions

This model is designed to measure oxygen (O₂) and carbon dioxide (CO₂) simultaneously. Buyers should confirm specific measurement ranges with the seller.

Machinery Masters Intelligence. General guidance for this category of equipment only, not a substitute for the seller's exact specifications. Always confirm details with the seller.