Rapidox 6100 C4-FN & C5-FK Multi-Gas Pumpback - Multi-Gas Analyzer for Eco-Friendly Gases

Fully automatic pump-back analyzer for eco-friendly C4-FN and C5-FK gas mixtures used in next-generation switchgear.

Description

Rapidox 6100 C4-FN & C5-FK Multi-Gas Pumpback is a fully automatic zero-emission multi-gas analyzer from Cambridge Sensotec (United Kingdom), designed for analyzing C4-FN (Novec 4710) and C5-FK (Novec 5110) gas mixtures — environmentally friendly alternatives to conventional SF6 insulating gas. The instrument is equipped with a Pump Back gas return function to minimize emissions.

Purpose and Applications

What are C4-FN and C5-FK?

C4-FN (Novec 4710) and C5-FK (Novec 5110) are new environmentally friendly gas mixtures used as alternatives to SF6 insulating gas:

Characteristic	SF6	C4-FN (Novec 4710)	C5-FK (Novec 5110)
Dielectric strength	High	High	High
Environmental risk	High (GWP 23,500)	None (GWP < 1)	None (GWP < 1)
Atmospheric lifetime	3,200 years	< 1 month	< 1 month
Regulation	Kyoto Protocol, EU F-Gas	Not required	Not required
Application	Conventional equipment	New SF6-free equipment	New SF6-free equipment

Why analyze C4-FN and C5-FK?

These gas mixtures are used in new environmentally friendly electrical equipment:

• Environmentally friendly equipment — free of greenhouse gases
• New generation of switchgear — with C4-FN/C5-FK insulation
• Transition to green technologies — replacing SF6 equipment
• Compliance with new regulations — EU F-Gas Regulation

Application in the power industry

The Rapidox 6100 C4-FN & C5-FK is used for:

• Analysis of C4-FN equipment — new generation
• Analysis of C5-FK equipment — new generation
• Mixture quality control — C4-FN + CO₂/O₂, C5-FK + CO₂
• Contamination detection — CO and other gases
• Environmental modernization — replacing SF6 with alternatives

Key Features

Analysis of environmentally friendly gases

The instrument can analyze new gas mixtures:

C4-FN (Novec 4710) analysis

• C4-FN — primary concentration 0-20%
• CO₂ — carbon dioxide (mixture component)
• O₂ — oxygen (mixture component)
• Moisture — dew point -60°C to +20°C
• CO — carbon monoxide (contaminant)

C5-FK (Novec 5110) analysis

• C5-FK — primary concentration 0-20%
• CO₂ — carbon dioxide (mixture component)
• Moisture — dew point -60°C to +20°C
• CO — carbon monoxide (contaminant)

Modular sensor configuration

• Modular system — configured for specific gases
• Up to 6 sensors — simultaneous analysis
• Sensor replacement — by the user
• Future upgrades — new gases

Pump Back Function (Gas Return)

• Sampling — gas is drawn from the equipment
• Analysis — all quality parameters are measured
• Return — clean gas is pumped back
• Result — minimal gas loss

Advantages of Pump Back

Economic

• C4-FN/C5-FK are expensive gases — priced higher than SF6
• Loss minimization — up to 99% gas return
• Refill savings — fewer new gas purchases
• Fast payback — within a few analyses

Environmental

• Zero emissions — Zero Emission
• Regulatory compliance — EU F-Gas Regulation
• Environmental responsibility — green technologies

Operational

• No pressure drop — gas is returned to the system
• No equipment downtime — no refilling required
• Fast analysis — automatic cycle
• Safety — minimal gas handling

Built-in thermal printer

• Instant printing — of results on site
• Quality reports — for documentation
• Time savings — no need for manual records
• Convenience — results always at hand

Technical Specifications

Measurement parameters

Parameter	Range	Accuracy	Sensor type	Service life
C4-FN (Novec 4710)	0–20%	±0.5%	Infrared (IR)	5 years
C5-FK (Novec 5110)	0–20%	±0.5%	Infrared (IR)	5 years
CO₂ (carbon dioxide)	0–100%	±0.5%	Infrared (IR)	>5 years
Air/O₂/N₂ (air/oxygen/nitrogen)	0–100% (air), 0–30% (O₂)	±1% full-scale	Electrochemical	Up to 5 years
H₂O (dew point)	-60°C to +20°Cdp (10–24,000 ppmV)	±2°Cdp	Polymer	2–3 years
CO (carbon monoxide)	0–500, 0–1000, 0–2000, 0–5000 ppm	±2% full-scale	Electrochemical	Up to 5 years

Pump system

Characteristic	Value
Pump type	Built-in vacuum
Capacity	Automatic
Gas return	Up to 99%
Return pressure	As in the equipment
Compressor	High-power, for return

Physical parameters

Parameter	Value
Display	7" touchscreen TFT
Printer	Built-in thermal printer
Protection	IP66 (Peli case)
Weight	21 kg with case
Dimensions	500 × 400 × 250 mm
Battery	Li-Ion, up to 8 hours
Case	Peli with trolley and handles

Interface and connectivity

Characteristic	Value
Display	7" color touchscreen LCD
Interface	Multilingual (Russian, English, etc.)
Memory	Data logging
Connectivity	USB, Ethernet
Fittings	DN8/DN20

Benefits of Use

Compared to conventional SF6

Parameter	SF6 analyzer	C4-FN/C5-FK analyzer
Environmental risk	High (GWP 23,500)	None (GWP < 1)
Regulation	Kyoto Protocol	Not required
Equipment longevity	Limited	Promising
Compliance with new regulations	Requires adaptation	Full
Future-proof investment	Risky	Reliable

Environmental benefits

C4-FN and C5-FK represent the future of electrical insulation:

• GWP < 1 — global warming potential of less than 1 (compared to CO₂)
• Atmospheric lifetime < 1 month — degrades quickly
• No regulation — not covered by the Kyoto Protocol or EU F-Gas
• Full environmental safety — no restrictions on use

Applications Across Industries

Power industry

• New equipment — with C4-FN/C5-FK insulation
• Modernization — replacing SF6 with alternatives
• Quality control — of gas mixtures
• Diagnostics — insulation condition

Industry

• Equipment manufacturing — quality control
• Research — of new gas mixtures
• Calibration — of sensors and systems
• Certification — of equipment

Environmental control

• Emissions monitoring — absence of contamination
• Reporting — environmental documentation
• Certification — environmental standards
• Audit — environmental responsibility

Comparison with Other Rapidox Models

Characteristic	SF6 6100 Pump Back	Clean Air Pumpback	QU4D Multi-Gas	C4-FN & C5-FK
SF6 analysis	✓	✓	✓	✗
Clean Air analysis	✗	✓	✓	✗
C4-FN analysis	✗	✗	✓	✓
C5-FK analysis	✗	✗	✓	✓
QU4D configuration	✗	✗	✓	✗
Pump Back	✓	✓	✓	✓
Thermal printer	Optional	Optional	Optional	✓
Application	SF6 equipment	SF6 + Clean Air	Multi-gas analysis	C4-FN/C5-FK equipment

Maintenance and Calibration

Calibration intervals

Sensor	Calibration interval
C4-FN/C5-FK (IR)	Every 12–24 months
CO₂ (IR)	Every 12–24 months
O₂/N₂ (electrochemical)	12–24 months
H₂O (dew point)	Every 12 months (sensor replacement)
CO (electrochemical)	Every 12–24 months

Sensor service life

Sensor	Service life
C4-FN/C5-FK (IR)	5 years
CO₂ (IR)	>5 years
O₂/N₂ (electrochemical)	Up to 5 years
H₂O (dew point)	2–3 years
CO (electrochemical)	Up to 5 years

Scope of Delivery

Standard scope of delivery

• Rapidox 6100 C4-FN & C5-FK Multi-Gas Pumpback analyzer
• Peli case with trolley and handles
• Lithium battery
• Built-in thermal printer
• Sampling hoses
• DN8/DN20 fittings
• Charger
• User manual

Optional equipment

• Additional sensors
• Calibration gases
• Spare parts
• Operator training

Warranty and Support

• Manufacturer's warranty — 12 months
• Extended warranty — upon request
• Technical support — Cambridge Sensotec
• Training — upon request
• Service maintenance — upon request

Conclusion

The Rapidox 6100 C4-FN & C5-FK Multi-Gas Pumpback is a state-of-the-art solution for analyzing new environmentally friendly gas mixtures used in SF6-free electrical equipment. The instrument delivers precise measurements, zero emissions and full automation of the analysis process, making it an ideal choice for companies transitioning to green technologies.