Which Rapidox for O₂ monitoring in a transformer?

For a fixed cabinet — Rapidox 2100 with remote zirconia sensor or OEM 2100-RSB; for field purge — Rapidox 5100 Purge Gas; for the lab — Rapidox 1100.

How does Rapidox 2100 differ from 1100?

2100 is for in-process measurements up to 650°C with a sensor on a cable up to 25 m; 1100 is for pumped sampling in lab and chamber conditions up to 50°C.

Do you supply Rapidox SF6 together with oxygen analyzers?

Yes. KEG TRK supplies the full Rapidox line: SF6 6100, leak detectors, accessories and oxygen analyzers for comprehensive substation diagnostics.

Is training and service available in Kazakhstan?

Yes — commissioning, calibration, staff training and technical support across Kazakhstan.

Cambridge Sensotec

Rapidox gas analyzers by Cambridge Sensotec

The Rapidox range covers oxygen analysis in transformers and GIS chambers, purge and inert gas control at power plants, multigas diagnostics, and SF6 analyzers for switchgear and substations.

KEG TRK supplies, commissions and services Cambridge Sensotec instruments for energy companies, grid operators and high-voltage equipment manufacturers in Kazakhstan.

Oxygen and inert atmospheres

Rapidox 1100/2100 — from ppm O₂ in transformer nitrogen purge to high-temperature process monitoring at power plants.

SF6 and Clean Air

Rapidox 6100 — portable and fixed SF6 quality analyzers, Clean Air and Novec gases for GIS and switchgear.

Power plants, hydrogen, multigas

Rapidox 3100/5100/7100 — CO, CO₂, CH₄, H₂ and syngas for boilers, biogas and hydrogen energy projects.

Rapidox 1100 — oxygen & specialty gases

8 models in group

RX1100-Z

Rapidox 1100 — oxygen analyser

Versatile O₂ analyser with zirconia, electrochemical or optical sensor for ppm and percent measurements

Cambridge Sensotec

RX1100-OPT-MAX

Rapidox 1100 OPT-MAX — full-range O₂

Dual-sensor analyser: optical for high % and electrochemical for ppm — continuous 0.1 ppm to 100%

Cambridge Sensotec

RX1100-H

Rapidox 1100-H — hydrogen analyser

Thermal conductivity H₂ analyser for industrial and energy gas mixtures

Cambridge Sensotec

RX1100-CO

Rapidox 1100 — carbon monoxide analyser

Electrochemical CO analyser for combustion control and safety in energy plants

Cambridge Sensotec

RX1100-CO2

Rapidox 1100 — carbon dioxide analyser

NDIR CO₂ analyser for process and emissions monitoring

Cambridge Sensotec

RX1100-He

Rapidox 1100 — helium analyser

Thermal conductivity helium analyser for leak and purity monitoring

Cambridge Sensotec

RX1100-CH4

Rapidox 1100 — methane analyser

NDIR methane analyser for biogas, natural gas and safety

Cambridge Sensotec

RX1100Z-OEM-RSB

Rapidox 1100Z-OEM-RSB / 1100ZR3-OEM-RSB

Miniature 24 V DIN-rail OEM oxygen analyser with pump for switchgear and GIS cabinets

Cambridge Sensotec

Rapidox 2100 — in-process oxygen

7 models in group

RX2100-Z

Rapidox 2100 — in-process oxygen analyser

Zirconia O₂ analyser with remote sensor to 650°C and Type K thermocouple for transformers and furnaces

Cambridge Sensotec

RX2100-FGA

Rapidox 2100 FGA — forming gas analyser

Specialised 2100 for N₂/H₂ forming gas in heat treatment and energy

Cambridge Sensotec

RX2100-OEM-RSB

Rapidox 2100-OEM-RSB

Compact 24 V OEM zirconia O₂ module for transformer monitoring systems

Cambridge Sensotec

RX2100-OEM-RSB-WALL

Rapidox 2100-OEM-RSB — wall mount

Wall-mount OEM 2100 for fixed O₂ monitoring at energy sites

Cambridge Sensotec

RX2100-OEM-INS/ENC

Rapidox 2100-OEM-RSB INS / ENC

OEM 2100 panel insert (INS) and enclosed (ENC) configs for automation cabinets

Cambridge Sensotec

RX2100-OEM-SIL2

Rapidox 2100-OEM-SIL2

SIL 2 certified OEM oxygen analyser for critical energy safety systems

Cambridge Sensotec

RX2112

Rapidox 2112 — 15-channel O₂ multiplex

Multiplexer for up to 15 oxygen sample points on large transformers, furnaces and GIS

Cambridge Sensotec

Rapidox 3100 — bench multigas

2 models in group

RX3100

Rapidox 3100 — bench multigas analyser

Bench multichannel analyser for O₂, CO₂, CO, H₂ and more — labs and power plants

Cambridge Sensotec

RX3100-OEM-3

Rapidox 3100-OEM-3

OEM multigas module for test and monitoring equipment integration

Cambridge Sensotec

Rapidox 5100 — portable multigas

4 models in group

RX5100

Rapidox 5100 — portable multigas analyser

Portable O₂, CO, CO₂, CH₄ analyser in rugged case for field diagnostics

Cambridge Sensotec

RX5100-BIO

Rapidox 5100 — portable biogas analyser

Portable CH₄, CO₂, O₂, H₂S for biogas plants at CHP and cogeneration sites

Cambridge Sensotec

RX5100-SYN

Rapidox 5100 — portable syngas analyser

Portable syngas (CO, H₂, CH₄, CO₂) for gasification and energy projects

Cambridge Sensotec

RX5100-PURGE

Rapidox 5100 — purge gas analyser

Portable O₂ and dew point for transformer, GIS and cable purging

Cambridge Sensotec

Rapidox 7100 — hydrogen multigas

3 models in group

RX7100

Rapidox 7100 — multigas analyser

High-precision bench analyser for hydrogen and process gas mixtures

Cambridge Sensotec

RX7100-BLUE

Rapidox 7100 Blue Hydrogen analyser

7100 configuration for natural-gas-derived blue hydrogen at energy sites

Cambridge Sensotec

RX7100-GREEN

Rapidox 7100 Green Hydrogen analyser

7100 configuration for electrolytic green hydrogen and H₂/O₂ purity at energy sites

Cambridge Sensotec

Rapidox 6100 — SF6 gas analysis

6 models in group

RX6100-SF6

Rapidox SF6 6100 — portable SF6 gas analyser

Portable analyser for SF6 moisture, purity and decomposition products in HV gas-insulated equipment

Cambridge Sensotec

RX6100-PB

Rapidox SF6 6100 Pump Back — SF6 analyser with gas return

Fully automatic SF6 analyser with pump-back gas return to minimise emissions and SF6 losses

Cambridge Sensotec

RX6100-BENCH

Rapidox SF6 6100 Bench — laboratory SF6 analyser

High-accuracy stationary SF6 analyser for laboratory and production quality control

Cambridge Sensotec

RX6100-CA

Rapidox 6100 Clean Air Pumpback — dry air and SF6 analyser

Analyser for dry air (Clean Air) and SF6 with pump-back gas return for zero-emission testing

Cambridge Sensotec

RX6100-QU4D

Rapidox 6100 QU4D Multi-Gas — multi-gas pumpback analyser

Multi-gas analyser with pump-back for comprehensive electrical equipment gas analysis (QU4D configuration)

Cambridge Sensotec

RX6100-C4C5

Rapidox 6100 C4-FN & C5-FK Multi-Gas Pumpback — eco gas analyser

Zero-emission multi-gas analyser for C4-FN (Novec 4710) and C5-FK (Novec 5110) alternative insulating gas mixtures

Cambridge Sensotec

MAP & modified atmosphere packaging

1 models in group

RX1100-AM-MAP

Rapidox 1100 AM MAP — modified atmosphere packaging analyser

Fixed O₂/CO₂ analyser for modified atmosphere packaging (MAP) on food packaging lines — IP54 stainless steel enclosure

Cambridge Sensotec

Accessories & fixed detection

4 models in group

RX-FIXED-SF6

Rapidox SF6 Fixed Detection System — fixed SF6 leak monitoring

Fixed continuous SF6 leak monitoring system for electrical switchgear and enclosed substation areas

Cambridge Sensotec

RX-RECOVERY-BAG

Rapidox SF6 Gas Recovery Bag — temporary SF6 storage bag

Temporary SF6 storage bag during analysis to prevent atmospheric emissions

Cambridge Sensotec

SF6-LEAKMATE

SF6 Leakmate — portable SF6 leak detector

Portable SF6 leak detector with 1×10⁻⁶ mbar·l/s threshold for mobile leak detection in HV switchgear, GIS and cable term...

Cambridge Sensotec

SF6-HOSE-KIT

SF6 Hose Connection Kit — SF6 hose adapter set

Universal RECTUS 21 adapter set for connecting SF6 analysers to Siemens, ABB, Hitachi, Schneider, GE and Mitsubishi equi...

Cambridge Sensotec

Power and energy applications

• Power and distribution transformers — O₂, N₂, purge
• Switchgear and circuit breakers
• Gas-insulated lines and GIS chambers
• CHP, thermal power plants, boilers and turbines
• Nitrogen plants and inert gas storage
• SF6 quality control per IEC 60480

Articles: transformers, DGA and oxygen in oil

Oxygen in Transformer Headspace: Rapidox 1100 Field Monitoring →Rapidox 3100 as a DGA Laboratory Companion: Headspace Before Chromatography →Nitrogen Blanket on CHP Auxiliary Transformers: Continuous Rapidox 2100 Monitoring →Field Gas Screening Before Laboratory DGA on Transformers →Conservator and Oxygen: CHP Oil Diagnostics Without Opening the Tank →Oxygen Depletion in Enclosed MV Switchgear: O₂ and SF₆ Monitoring at CHP Substations →Clean Air and Oxygen in SF₆-Free Switchgear: Monitoring at CHP During the SF₆ Transition →Vibration Monitoring of Power Transformer Cooling Auxiliaries at CHP Plants →Transformer DGA at CHP: What to Add Beyond Oil Chromatography →Integrated Monitoring of CHP Transformer Bays: Rapidox, Vibration and Ultrasound →

All articles →

Frequently asked questions about Rapidox

Rapidox selection for your site

Specify equipment type (transformer, GIS, power plant, switchgear) — we will recommend configuration and scope.

Call Request a quote About Cambridge Sensotec →

35 Rapidox instruments in catalog