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Portable Gas Detectors

GX-6000 Benzene Selective Model

Low concentration 10.0eV Benzene selective PID with interference gas removal filter tubes

The Riken Keiki model GX-6000 for Benzene uses a PID sensor more selective to Benzene. Benzene specificity can further be increased using the optional tube holder with pre-filter for the removal of common interference gases such as toluene.
GX-6000 Benzene 10.0eV PID ionization energy diagram

Product Features

Benzene (C6H6) is a natural constituent of crude oil. It is one of the elementary Petrochemicals. Benzene is found in Oil refineries, Petrochemical plants, Steel Works and On-Board Tankers.

Benzene is a powerful carcinogenic. It also causes several other illnesses workers must therefore monitor levels where it is present.

Users find that measuring Benzene at the low levels required to meet global exposure limits is problematic. Users find that Gas sensors sensitive to Benzene are not very selective. This results in sensitivity to other gases commonly present.

The GX-6000 is a game changer, and it just changed the game again with the Benzene Specific measuring mode. The GX-6000 Benzene features a more selective 10.0 eV PID sensor. This allows users to detect the BTEX family of VOC’s including benzene, toluene, ethylbenzene, and xylene with a range of 0 – 100 ppm. In addition, users have access to a library of over 300 VOCs.

Customers filter out all other VOC’s using the PID pre-filter tubes. This allows users to specifically monitor benzene in a range of 0.01 – 50 ppm. The filter tube holder has a unique break away design to avoid accidental damage if impacted or dropped. The filter tube holder also includes a safe and convenient glass breaker for the filter tube tips.
GX-6000 Benzene 10.0eV PID selective filter tube

Dual Channel PID Capable

The GX-6000 has 3 PID ranges a 10.6 eV with either ppb or ppm ranges  and the new 10.0 eV.  The GX-6000 is the only PID instrument on the market with the ability to have two PID sensors functioning in one instrument.  Many Customers use the broad range 10.6 eV PID sensor for a preliminary investigation, then switch to benzene mode for a highly specific benzene measurement.

Up to 6 x sensors including plug and play smart sensors

This powerful hand-held instrument allows users to simultaneously monitor up to 6 gases. In addition to the standard 4 confined space gases which include combustibles, O2, CO, & H2S, the GX-6000 has 2 additional smart channels that accept PID, IR or super toxic sensors. Smart sensors retain their calibration data. This allows users can swap gas sensors on the fly as and when required.

The GX-6000 has a strong internal pump, a man-down alarm, a panic alarm, an LED flashlight, and large auto rotating LCD display. Users can specify a single gas PID unit or a multifunctional tool utilizing all 6 channels. Users have access to  a library of over 600 VOC gases to choose from as standard. Choosing from the library is easy with a personalized favourites list of 30 commonly used VOCs. A list of 8 of the most recently used VOCs is also available.

GX-6000 has a rugged design built for the nastiest environments. It is equipped with a removable impact-resistant rubber boot and a dust and water-resistant enclosure with an IP-67 rating. 5 bright LED lights on 3 sides of the instrument mean the alarms are easily seen from a variety of perspectives. Loud Audible alarms and a Vibration feature mean the GX-6000 easily alerts users when needed.


Alarm Types Gas alarm Man-down Trouble
Low and high adjustable 1st – self reset2nd – latching Low flowSensor connection

Low battery

Circuit error

Calibration range


Sample Method Sample draw pump, flow rate 0.45 LPM, 50 foot sample range
Display Digital LCD, autobacklite, peak bar display, auto display rotation, and customize order of gases
Audible Alarm 95 dB at 1 ft.
Languages English, German, Japanese, Korean, Russian
Operation *
14 hours on Lithium-ion battery pack. Complete recharge in 3 hours.8 hours Alkaline battery pack (3 AA size within each pack)
Operating Temp.
& Humidity
-4°F to 122°F (-20°C ~ +50?), 0- 95% RH non condensing
Dimensions / Weight 2.6” W x 7.8” H x 2” D (H200 x W68 x D52 mm)
14 ounce (400g) (with lithium battery pack)
Case Material Dust and water resistant with IP-67 approval (exclude sample hose and probe)
Safety Design /Approvals Explosion proof: IECEx , ATEX , TIIS , (CSA) pending Explosion class :Ex ia IIC T4 Ga Others: CE Marking
  • 2 Smart sensors slots auto recognize sensor changes
  • Library of over 300 VOC’s ( 600 if 10.6eV PID also used )
  • User defined VOC list. Up to 30 frequently used
  • Recent VOC list for last 8 selected gases
  • Pump and circuit status indicators
  • User & station ID selection menu
  • Datalogging (interval, alarm trend, station and user ID)
  • Snap logging – on demand data logging
  • Demand zero / Auto zero
  • BUMP and CAL expiration alarm
  • Flashlight
  • IrDA communication
  • LEL sensor protection mode
  • Rubber boot
  • Belt clip
  • Hand strap
  • Tapered nozzle
  • Probe with hydrphobic filter and 3’ teflon lined hose
  • Lithium-ion battery pack & charger / alkaline battery charger
  • Filter set • IrDA cable
Warranty Two years material (including sensors) and workmanship. One year for PID sensor

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