HUNTER SF6 - 251250

Variant:

The HUNTER SF6 is a gas detection and measurement device for the reliable detection of even the smallest SF6 leaks in pipeline and system components. By directly detecting sulphur hexafluoride in the ppm range, the device enables the precise localisation of leaks – even during ongoing operation. The HUNTER SF6 thus helps to detect emissions at an early stage, minimise risks to operations and the environment, and implement testing and maintenance measures in a well-founded and traceable manner. Based on our proven Hunter platform, the combination of highly sensitive sensor technology, fast response time and active sampling ensures efficient measurement processes directly at the plant. The robust, compact design makes the HUNTER SF6 the ideal companion for mobile use in demanding environments. Advantages: - highly sensitive sensor for SF6 with resolution in the ppm range - fast response time even with the smallest traces of gas - integrated pump with high flow rate for precise sampling - robust, handy housing – ideal for mobile use - long operating time of up to 10 hours thanks to powerful battery Measuring range: 0 to 10 ppm with 0.1 ppm resolution SF₆ 10 to 1000 ppm with 1 ppm resolution SF₆ Temperature range: -10°C to 50°C Dimensions: approx. 200 × 100 × 87 mm Weight: approx. 1100 g

Quantity

Description

Gas detection and gas measuring device for professional SF6 leak detection

Sulphur hexafluoride, or SF6 for short, has been used for decades as an insulating and extinguishing gas in medium and high-voltage switchgear. Technically, SF6 has a number of advantages, but at the same time it is one of the most climate-impacting greenhouse gases known, which also remains in the atmosphere for a long time.

The HUNTER SF6 allows leaks to be reliably detected and assessed directly on site. This creates a robust basis for compliant testing and maintenance processes in accordance with specified guidelines and standards.

Features

The HUNTER SF6 combines precise sensor technology with our HUNTER device platform:

integrated pump for active gas extraction
flexible probes for different system types and measuring points
large, clear display
long operating time for all-day inspections
digital connection via Esders Connect

Challenges

Difficult localisation of SF6 leaks in the field

The handling of sulphur hexafluoride is increasingly becoming the focus of legislation, regulatory authorities and the public:

stricter requirements due to the F-Gas Regulation (EU) 2024/573
restrictions on the use of new switchgear depending on the voltage level
obligations regarding leak testing, documentation and staff qualification
increasing importance of SF6 recovery and reuse in the future

For operators and service companies, this means that leaks must be detected early, emissions minimised and measures properly documented.

Our device solution is specifically developed for:

network operators and energy suppliers
service and maintenance companies
operators of medium and high-voltage switchgear
specialist personnel responsible for environmental, occupational and plant safety

The HUNTER SF6 as a solution

Targeted leak detection with a system

The HUNTER SF6 was specially developed for pinpoint leak detection in systems that are fed with sulphur hexafluoride. The integrated IR sensor technology enables sensitive detection directly at the source – for example, in GIS and GIL systems, switchgear, measuring transformers or cable terminations.

This allows leaks to be quickly located and reliably assessed, even during ongoing operation.

Advantages at a glance

Sensitive measurement of even the smallest SF6 leaks to reduce emissions
Precise leak detection at a safe distance from live components
Structured recording of measured values as a basis for LDAR concepts
Preparation for stricter regulations, increasing documentation requirements and the growing focus on recycling and reuse
Digital documentation via the Esders Connect app

Technical data

Name	HUNTER SF₆
Weight	Approx. 1.115 g
Pump	> 40 l/h, > 300 mbar
Display	LCD graphic display with 240 x 160 pixels; with touch screen function and backlighting; display of measured values; maximum value and bar chart
Power supply	Lithium-ion battery, 3.6 V, 6700 mAh
Charging voltage	12 V DC
Charging current	Power supply unit 230 V or car adapter, 12 V, approx. 5 hours
Operating time	> 10 hours (without lighting) Warning message when recharging is required, automatic switch-off when voltage is too low
Operating conditions	Temperature: -10 °C to +50 °C Humidity: 0-90 % RH (non-condensing) Ambient pressure: 800 - 1100 hPa
Storage conditions	Temperature: -20 °C to +50 °C Humidity: 0-90 % RH (non-condensing)
Protection class	IP 52
Indication	Visual via digital concentration indicators (ppm, g/year) Alarm LEDs Acoustic via audible signal
Data storage	> 2.000.000 measured values (depending on the measurement duration)
Warranty	12 months
Expected service life	Measuring device: > 5 years Data storage: > 10 years

Gas sensors

Gas sensors
Operating principle	Gas	Measuring range	Resolution*	Accuracy
Non-dispersive infrared absorption (NDIR)	SF₆	0 – 10 ppm	0,1 ppm	±10 % of the final value
Non-dispersive infrared absorption (NDIR)	SF₆	10 - 1000 ppm	1 ppm	±10% of the final value

Gas sensor type	Cross-sensitivities	Expected service life
NDIR sensor	None	Service life of the device

Menu item: Leak detection*		Direct gas pressurisation
Gas sensor type	Test gas	Alarm threshold
		1 ppm	5 ppm	9 ppm
NDIR	SF₆ 10 ppm	2 s	3 s	4 s

Gas sensor type	Lowest detection sensitivity	Unit
NDIR sensor	1,5	ppm SF₆
NDIR sensor	3	g/year SF₆