Gas-Pro TK

Gas-Pro TK dual range portable monitor measures the concentration of flammable gas in inerted tanks. Available for methane, butane and propane, Gas-Pro TK uses a dual IR sensor – the best technology for this specialist environment, which means Gas-Pro TK dual IR:

  • Auto-ranges switch between %vol and %LEL measurement, so always operating to the correct parameter.
  • Measures gas in high %vol as well as %LEL concentration, which single IR sensors can’t
  • Isn’t inhibited by high hydrocarbon concentrations unlike catalytic bead sensor

Gas-Pro TK keeps you up-to-the moment with oxygen concentrations in the tank; telling you when the oxygen levels are;

  • Low enough to load and store fuel safely;
  • High enough for safe tank entry.

Tanks can be sampled quickly from their top, middle or base, due to an integrated pump which draws samples through a line up to 30m long.

Offering detection of up to five gases in a compact and rugged solution, Gas-Pro TK has an easy-to-read top mount display, combining ease of use and user focused features. At 340g, it is light enough to clip to your belt or overalls, so it easy for the technician to keep with them during their working day.

Personal protection monitor

Gas-Pro TK is an extension of the Gas-Pro range. Therefore, in addition to its superb tank check capabilities, it also offers the full personal gas detection and confined space pre-entry check functionalities provided by other Gas-Pro detectors.


Size 43 x 130 x 84mm (1.7 x 5.1 x 3.3ins)
Weight 340g (11.9oz)
Alarms Audible 95dB
Visual – all angle dual red/blue LEDs
Vibrating alert
Display Bright top mounted display can be viewed while worn
Data logging 125hr at 10-second intervals (45,000 logs)
Event logging 1000 events
Battery Rechargeable Li-ion, 13 hour typical runtime (4 sensors, pump running)
Typical charge time 7.5hr
Sampling Internal pump with 30m draw
Operating temperature -20°C to +55°C (-4°F to +131°F)
Humidity 10 to 95% RH non-condensing
Ingress protection Independently tested to IP65 and IP67
Approvals IECEx: Ex db ia IIC T4 Gb Tamb -20°C to +55°C
ATEX and UKCA: II 2 G Ex db ia IIC T4 Gb Tamb -20°C to +55°C
UL: Class 1, Division 1, Groups A, B, C, and D UL 913, UL 60079-0 and UL 60079-11
INMETRO: Ex db ia IIC T4 Gb Tamb -20°C to +55°C
Marine Equipment Directive: MED 1500009
Compliance FCC and CE. Complies with EMC Directive 2014/30/EU, EN50270 and EMC FFC CFR 47 Part 15, ICES-003
Crowcon Connect Compatible? Yes



Below is a small selection of the accessories available for the Gas-Pro TK.

Multi region power supply


6.5V power supply for North America, Europe, UK and Australia type outlets

Charging lead

Charging lead


For connecting power supply to Gas-Pro TK. Can be mounted inside cradle charger (CH0105)

Gas-Pro charger cradle

Cradle charger


Requires multi region power supply (CH0101, CH0106 or CH0107) and charging lead (CH0102)

5 way charger

5 way charger


Charge up to 5 units from a single power outlet. For North America, Europe, UK and Australia type outlets. Requires one charging lead for each Tank-Pro (CH0102)

Vehicle charging adapter


6.5V power supply for use with 12V vehicle power outlets

Chest harness plate

Chest harness plate


For attaching chest harness straps (CH0507) to Tank-Pro. Chest harness plate fits in place of Tank-Pro’s alligator clip.

Chest harness straps

Chest harness straps


Set of harness straps for carrying Tank-Pro on front of the chest. Requires chest harness plate (CH0506)





Power and Communication Cables

Additional information


Optional internal pump with 30m (90ft) draw


Basic Operation:


Includes: Switching Gas-Pro on and sensor zero. Duration: 1m471secs

Watch video


Includes: Explanation of Gas-Pro alarm display. Duration: 49secs

Watch video


Includes: Switching Gas-Pro off. Duration: 30secs

Watch video


Includes: Using the Gas-Pro cradle charger and charging lead. Duration: 45secs

Watch video

Advanced Features:

  Flow plate and Plate Fitting

Includes: Fit and remove the gas flow plate on Gas-Pro’s with internal pumps. Duration: 50secs

Watch video

  Check Mode

Includes: Conduct pre-entry gas checks for confined spaces using Gas-Pro. Duration: 1m:10secs

Watch video

  Dual Range Operation

Includes: Dural range operation. Duration: 1m:01secs

Watch video

Bump Testing:

  Manual bump

Includes: Bump testing using the gas flow plate. Duration: 1m:01secs

Watch video