Sensor Part Number

Description

Datasheet

Full Manual

Low-cost electrochemical Toxic Gas Sensors for residential and light commercial applications

NAP-505

Our flagship Low-Cost 3-Electrode CO  sensor,

0-1000ppm

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NAP-508

New Low cost 3-Electrode CO sensor with 10 year life

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NAP-550

Low-Cost 3-Electrode NO2  sensor, 0-30ppm

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Sensor Part Number

Description

Datasheet

Characterisation

File

Special sensors to detect incomplete combustion in water heaters and boiler stacks

NAP-78A

Catalytic sensor which detects and monitors for excessive CO and H2  concentrations up in boiler exhaust flues. As NAP-79A, but supplied as a module with compensation circuitry. Mounts directly ina boiler flue stack. Temperature range -20 to +260 degC

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Sensor Part Number

Description

Datasheet

Full Manual

Cataytic (Pellsitor) type Gas Sensors for Industrial Gas Detectors

NCP-300

General purpose catalytic pellistor sensor for use in Fixed Gas Detection Systems. Poison resistant. Supplied as matched pairs, mounted on twin TO4 size headers.

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NCP-170

General purpose catalytic pellistor sensor for use in Fixed Gas Detection Systems. Poison resistant. Supplied as matched pairs, mounted on twin TO4 size headers. Lower power than NCP-300

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NCP-300S

General purpose catalytic pellistor sensor for use in Fixed Gas Detection Systems. Similar in characteristics to NCP-300 but lower cost. mounted on a single header.

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NCP-170S-H

Very similar to the popular NCP-170S sensor, but with a very wide temperature range (-40°C to +150°C).

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NCP-170S-6

General purpose catalytic pellistor sensor for use in Fixed Gas Detection Systems. Similar in characteristics to NCP-170 but lower cost. mounted on a single header.

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NCP-180

General purpose catalytic pellistor sensor for use in Fixed Gas Detection Systems. Poison resistant. Supplied as matched pairs, mounted on twin TO4 size headers.

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NCP-180S-6S

General purpose catalytic Gas Sensor, combining outstanding performance at an amazingly low-cost

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NCP-180S-7S

Our new flagship sensor, for those who don't want to compromise on quality - we think the best performing and best value general purpose catalytic Gas Sensor for industrial applications available from anywhere.

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NCP-180S

General purpose catalytic pellistor sensor for use in Fixed Gas Detection Systems. Similar in characteristics to NCP-180 but lower cost. mounted on a single header.

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NCP-180-A

Special application catalytic pellistor sensor for monitoring Acetylene. Poison resistant. Supplied as matched pairs, mounted on twin TO4 size headers.

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NCH-180

New Explosion-Proof Flammable Gas detection head - certified to ATEX and IEC standards.

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Sensor Part Number

Description

Datasheet

Full Manual

Low-cost catalytic Flammable Gas Sensors for residential and light commercial applications

NAP-55A

Standard low-cost flammable Gas Sensor, optrimised for Methane / Natural Gas, 0-50%LEL

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NAP-50A

As NAP-55A, but modified to reduce cross-sensitivity to Alcahols, for residential instruments intended to comply with EN50194

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NAP-66A

As NAP-55A, but optimised to detect Butane, Propane, LPG. O-50% LEL

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NAP-56A

Similar to NAP-55A, but mounted in a metal and phenolic resin header to allow a wider working temperature range (-40 to +70 deg C)

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NAP-67A

Similar to NAP-66A, but mounted in a metal and phenolic resin header to allow a wider working temperature range (-40 to +70 deg C)

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PENDING

NSU-131AF

A NAP-56A / NAP-67A sensor mounted in a precalibrated module

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Sensor Part Number

Description

Datasheet

Full Manual

High Specification Electrochemical Toxic Gas Sensors for Industrial Applications

NE4-CO

3-Electrode Carbon Monoxide CO sensor with excellent performance characterististics. 70nA/ppm, 0-1000ppm

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NE4-CO-SI

Lower cost version of the NE4-CO, for cost sensitive applications such as Underground Car-Parks.

55nA/ppm, 0-1000ppm

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NE7-CO

“Series 7” format CO sensor, Designed for general purpose use in fixed industrial safety applications.

100 nA/ppm, 0-1000ppm

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NE4-H2S

3-Electode Hydrogen Sulphide H2S Sensor. 500nA/ppm, Standard Range 0-100ppm. Not compatible with competitors devices, but lower cost

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NE4-H2S-100

3-Electode Hydrogen Sulphide H2S Sensor. 700nA/ppm, Standard Range 0-100ppm.

compatible with competitors devices.

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NE4-H2S-200

3-Electode Hydrogen Sulphide H2S Sensor. 500nA/ppm.  Special Range 0-200ppm

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NE4-H2S-500

3-Electode Hydrogen Sulphide H2S Sensor. 200nA/ppm, Special Range 0-500ppm

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NE4-NH3

3-Electode Ammonia NH3 Sensor. 40nA/ppm, Standard Range 0-100ppm

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NE4-NH3-1000

3-Electode Ammonia NH3 Sensor. 8nA/ppm, Extended  Range 0-1000ppm

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NE4-NH3-5000

3-Electode Ammonia NH3 Sensor. 4nA/ppm, Extended Range 0-5000ppm

PENDING

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NE4-NO2

3-Electode Nitrogen Dioxide NO2 Sensor. 200nA/ppm, Standard Range 0-20ppm

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NE4-HCHO-S

3-Electode Formaldehyde CH2O Sensor.

600nA/ppm, Standard Range 0-10ppm, resolves down to 0.02 ppm

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NE4-NO

3-Electode Nitric Oxide NO Sensor.

400nA/ppm, Standard Range 0-250ppm.

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NE4-CL2

3-electrode sensor for the reliable monitoring of Chlorine Cl2. Output 600nA/ppm, range 0-10ppm

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Application Notes

Pellistor Poisoning

Explains the mechanisms by which some chemicals cause poisoning of Catalytic Gas Sensors, lists the common situations and chemicals which can poison pellistors, and offers advice on how to keep these problems to a minimum.


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The use of Catalytic Gas Sensors (pellistors) for monitoring low levels of Ammonia or Hydrogen


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