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Portable Gas Detectors

1000 Series Combustible Gas Detectors with internal pump

Sample Draw Combustible Gas Monitors %LEL / % VOL / PPM Ranges

The 1000 Series allows users to directly read up to 25 combustible gases. Including Hydrogen as-well-as Argon and Helium. There are 3 versions for %LEL, %vol and ppm ranges. The NP-1000 for %vol can measure Hydrogen in an inert atmosphere such as Nitrogen or CO2, making it ideal for purging applications.

1000 Series Display Diagram

Product Features

Three single gas portable models for ppm, %LEL, and %VOL for Hydrogen and other combustible gases. The NC-1000 has a range of 0-10000 ppm, the GP-1000 has a range of 0-100% LEL, and the NP-1000 has a range of 0-100% Volume.

The 1000 Series have several attractive features allowing users to directly read up to 25 target gases (5 for NP-1000). There is a large intuitive display as well as a strong backlight. Datalogging in addition to a pump boost mode for long sampling lines, are also included.

Single Combustible gas calibration

1000 series comes calibrated to either Methane or Iso-Butane. Users can then select any one of 25 target gases by a simple button operation. Optional filters can be used with the standard gas sampling probe to remove Hydrogen sulphide (H2S) or Silicone contaminants. These gases normally damage this type of catalytic sensor.

The instruments have ingress proof rating of IP67 and are Intrinsically safe in addition to having ATEX approval. A safety rating of Ex ia ⅡC T4 allows users to detect a gas at hazardous area Zone 0, areas where an explosion risk always exists.

Customers find the 1000 series is ideal for checking gas leaks or monitoring gas in oil refineries, petrochemical plants. In addition, the Hydrogen calibrated version is ideal for use in power stations as well as fuel cell leak checking.

NP-1000 Hydrogen Detector

The NP-1000-H2 is a version calibrated specifically for Hydrogen in the range of 0-10% Volume or 0-100% Volume. The NP-1000 is ideal for use in Fuel Cell environments, Power station Generator purging, in addition to many other Hydrogen Economy applications.

The 1000 series are small, light, and compact in addition to being very easy for users to operate. They operate with 4 x Alkaline batteries allowing continuous operation of up to 20 hours. The 1000 series has a strong on-board pump with pump boost which allows use with long sampling lines up to 30 meters.


Users benefit from standard accessories which include a 0.75m hose as well as a probe. Users can specify optional accessories which include data logging software, carry case in addition to H2S filters and sampling hoses. In addition, see links to the complimentary instruments below.


Model GP-1000 : (for other models refer to data sheet in downloads)
Gas detected Combustible gas (CH4, HC etc. Refer to the gas list)
Sensor principle Catalytic combustion
Detection range 0-100%LEL
Alarm types Gas alarm: Trouble alarm: Latching, 1st and 2nd alarm Low flow, sensor disconnection, low battery voltage, Circuit abnormality, detection range abnormality
Alarm methods Gas alarm: Trouble alarm: Continuous buzzer, flashing lights, gas concentration reading blinks Intermittent buzzer, flashing lights, trouble condition is displayed
Preset alarms Indication accuracy 1st:10%LEL 、 2nd:50%LEL Full scale +/- 5% (at same condition)
Response time Within 30 seconds (T90)
Sampling method Sample-draw, Flow rate > 0.3L/min (Approx. 0.6L/min for pump boosting mode)
Indication precision Digital LCD with 7 segments + Bar meter (50 partioning) + Status information Digital numeral 7 segments indication: 0 – 100%LEL Digital bar meter indication: Auto range (0 – 10%LEL / 0 – 100%LEL) 0〜10 %LEL (L range) 0〜100 %LEL (H range)
Power source AA alkaline battery, 4pcs
Continuous operation More than 20 hour (new battery, no alarm and no indication, at 25℃)
Operating temp. & humidity Operating temperature -20〜50℃, humidity 0 – 95%RH (non condensing) Storage temperature -25〜60℃, humidity 0 – 95%RH (non condensing)
Dimension 80.1(W)*124(H)*36(D)mm (3.15(W)*4.88(H)*1.42(D) inches)
Weight Approx. 260g (9.2 oz.) (exclude alkaline battery)
Water dust proof IP 67
Safety design Intrinsically safety ExiaIICT4
Approvals Ex-proof: IECEx, ATEX, TIIS Other: CE marking
Function LCD backlight, data log, log data indication, peak indication Pump boosting, gas select

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