The GS01 is a wireless infrared gas detector designed for the nonstop detection of flammable hydrocarbon gases and vapors in oil and gas facilities. Built with intrinsic safety and SIL certification, this transmitter operates entirely without wires — both in communication and power. Its wireless design makes it a versatile and budget-friendly option for expanding existing setups, upgrading infrastructure, or deploying in new greenfield developments.C4.
• Installations in demanding conditions
• Saving time and money throughout the project
• Saving time and money during operation
• Safe, wireless communication
For continuous monitoring of flammable hydrocarbon gases and vapours in the oil and gas industry. The intrinsically safe and SIL-rated transmitter features completely wireless signal transmission and power supply. This makes the GS01 a flexible and cost efficient solution for plant expansions, upgrades, and new greenfield projects. GS01 wireless transmitter requires no cable installation, either for signal transmission or for its power supply. As such, installation is easy and uncomplicated and the transmitter sends its signal to the access point up to 500 metres away. No cable conduits are required for the power supply or for signal transmission. Plus, the GS01-EA product variant with separate antenna can be installed inside machines or buildings where signal transmission is impossible due to shielding. For temporary applications, such as maintenance work on petrochemical plants or exploratory drilling, the GS01 offers you maximum flexibility.
Measuring principle
Infrared single beam, triple wavelength
Detectable gases
0 to 100 % LEL (Methane) : 0 to 80 % LEL (Propane)
Calibration
Factory-set, no field calibration
Response time
≤ 5 seconds
Accuracy
± 3 % LEL or ± 10 % of measured value, each the higher value (refers to Methane)
Zero-point stability
± 3 % LEL (lifelong)
Battery type
Lithium-Thionyl Chloride
Battery lifetime
Up to 2 years (depending on the environmental conditions)
RF power
GS01: < 12 dBm EIRP
GS01-EA: < 16 dBm EIRP
Communication
Type IEEE802.15.4 in 2.4 GHz ISM Band
Protocol ISA100 Wireless™
Gateway output Standard: Modbus TCP/RTU, OPC _ Optional: PROFINET® (SIL2)
Operating temperature
-30 °C to +55 °C (if higher temperature ranges up to +65 °C are required please contact Dräger)
Storage temperature
-40 °C to +65 °C
Humidity
0 to 100 % RH
Protection Class
IP66 and IP67
Dimensions
300 x 110 x 170 mm
Weight
2.8 kg (incl. Battery)
Mounting
With bracket for 8 mm or 5/16″ bolts
Approvals
ATEX / IECEx, FM, Performance Approval Compliant with EN 60079-29-1, Safety Integrity Level SIL2 IEC 61508, Ed.2.0
The Dräger PEX 3000 transmitter detects flammable gases and vapors at concentrations below their lower explosive limit (LEL), ensuring early warning and enhanced safety in potentially hazardous environments. It enhances your plant’s explosion safety by delivering early detection. Using a catalytic bead sensor, it ensures stable long-term performance and delivers rapid response times — typically within seconds of gas exposure.
• Six variants of transmitters
• Simple installation
• One-man Calibration
• Explosion Protection
• Low gas concentrations
• The catalytic bead sensor
• Oil refineries/mining/OnShore/Off Shore /Tank Farms/Water treatment plants
• Continous monitoring of Hydrocarbon , Hydrogen Flammable Gases using Catalytic technology without Display or any indication
• Normal measurment possible with 4-20mA
• Hazardous area Application (zone 1,Zone2)
• Continous monitoring of Hygrogen in battery rooms
Measuring range
Typ XTR 0000, XTR 0001 0 to 99 %LEL
Typ XTR 0010, XTR 0011 0 to 9.9 %LEL
Typ XTR 0090, XTR 0091 with measuring head SE Ex PR / HT DQ 0 to 99 %LEL
Typ XTR 0090, XTR 0091 with measuring head SE Ex LC DQ 0 to 9.9 %LEL
Power supply
12 to 30 V d.c. (nominal 24 V d.c.), max. 110 mA at 24 V
max. cable length (at 24 V, 250 Ohms)
2,400 m at 3 x 1.5 mm2, 1,600 m at 3 x 1.0 mm2, 1,200 m at 3 x 0.75 mm2
Signal output
Normal operation – 4 to 20 mA
Maintenance – 3.4 mA
Fault condition – < 1.2 mA
Response time (at 25 °C, methane)
t50: 3 … 5 s to t90: 8 … 10 s
Temperature
-40 to +65 °C (see below)
Pressure
700 to 1,300 hPa
Humidity
5 to 95 % r. H.
Enclosure material
glass fiber reinforced polyester (GRP)
Enclosure protection
IP 66
Dimensions (W x H x D)
ca. 80 x 145 x 55 mm
Weight
ca. 600 g (Typ XTR 0090, XTR 0091: ca. 450 g)
Expected sensor lifetime
typical > 3 years
Performance approval
acc. to EN 60079-29-1 for the a.m. gases and vapours (100 %LEL variants only)
The Dräger PointGard 2200 series is a self-contained gas detection system for the continuous area monitoring of flammable gases and vapours in ambient air. PointGard 2200’s rugged, water-resistant housing comes complete with a horn and strobes, a built-in power supply, and reliable DrägerSensor®.
• Ready to use out of the box
• Fast and stable flammable gas detection
• Flexible communications
• Rugged and compact housing
• Rugged and compact housing
• Monitor remote areas up to 30meter (98ft) away
For the continuous area monitoring of flammable gases and vapours in ambient air. PointGard 2200’s rugged, water-resistant housing comes complete with a horn and strobes, a built-in power supply, and reliable DrägerSensor®. Just mount it on a wall and hard wire it to an AC/DC power or plug in the optional AC power cord. Since the strobes and horn are built in, there is no need to specify and purchase separate alarm output devices.
Dräger PointGard 2200 CAT Ex
Flammable gases in ambient air
Type
Self-contained gas monitor with alarm devices for general-purpose applications
Measuring Range
Catalytic bead (CAT Ex) sensor 0–100% LEL
LCD display
75 mm/3″ backlit graphic LC display
Selectable red or green illumination, alphanumeric
Indicators
3 status LEDs (green/yellow/red)
Operation
Through three front mounted push buttons
Security
Separate passwords for maintenance and configuration menu
Signal output analog
Normal operation 4–20 mA
Maintenance Constant 3.4 mA or 4 mA ±1 mA 1 Hz modulation (adjustable)
Power supply AC version
Operating voltage 100–240 VAC 50–60 Hz
Nominal power 6 W
Operating current (max) 0.5 A
Inrush current Max. 40 A at 230 VAC 50 Hz
Power supply DC version
Operating voltage 8–30 VDC
Nominal power 6 W
Operating current (max) 2.5 A
Electrical certification
CE rating, IEC/EN 61010-1
Complies with UL 61010-1
Class B device, residential use compliant with ICES-3(B)/ NMB-3(B)
Relay specification
2 alarm relays and 1 fault relay
SPDT contact 5 A @ 230 VAC, 5 A @ 30 VDC, resistance bound
Alarm reset through front-mounted push button
Alarm devices
Variants with amber and red LED strobes activate on 2 alarm levels independently
Variants with green steady light activate red strobe on 1 common alarm level. Green steady light turns off during alarm or fault condition; optional blue LED strobe
85-105 dB adjustable-volume buzzer with continuous and pulsating tone
Temperature (storage)
-20 to +65 °C/-4 to +149 °F
Temperature (operation)
-20 to +50 °C/-4 to +122 °F
Humidity
0 to 95% r. h., noncondensing
Pressure
20.7 to 38.4″ Hg/700 to 1,300 hPa
Material
Glass fiber reinforced polyester (GFRP)
Mounting
Wall mount with internal screws or optional SS mounting brackets
The Dräger Polytron® 5200 CAT is a cost-effective, explosion-proof transmitter designed to detect flammable gases at concentrations within the lower explosive limit (LEL). It features the catalytic bead DrägerSensor® Ex … DD, which can detect a wide range of combustible gases and vapors. Equipped with a 3-wire 4 to 20 mA analog output and relay support, it seamlessly integrates with most control systems, making it an ideal choice for industrial safety monitoring
• Fast and stable – the DrägerSensor® Ex
• Same design, same operating principles
• Three relays for controlling external equipment
• Safe, robust housing for every application
• Make the impossible possible with the remote sensor
• Oil refineries/mining/OnShore/Off Shore /Water treatment Plant
• Continous monitoring of Hydrocarbon , Hydrogen Flammable Gases using Catalytic technology
• Measuement of Flammable inside the Duct upto 150degc ( Remote installation up to 30 meters Available)
• Hazardous area Application (zone 1,Zone2)
• Continous monitoring of Hygrogen in battery rooms
Type
Explosion-proof / flameproof enclosed transmitter (“d”) or combined with increased safety (“d/e”)
Gases
flammable gases and vapours
Measuring ranges
DQ 0 to 100 % LEL , LC 0 to 10 % LEL
Display
Backlit 4 digit LCD; 3 Status LEDs (green/yellow/red)
Accuracy/repeatability
≤ 1 % LEL
Response time
< 7 seconds to < 13 seconds
Signal output analogue
4 to 20-mA
Power supply
10 to 30 V DC, 3-wire
Temperature
-40 to 80 °C (-40 to 176 °F)
Pressure
20.7 to 38.4 inch Hg / 700 to 1,300 mbar
Humidity
0 to 100 % RH, non-condensing
Transmitter housing
Epoxy coated copper-free aluminum or SS316 L stainless steel
The Dräger Polytron® 5310 IR is an affordable, explosion-proof gas transmitter designed for detecting flammable gases at LEL concentrations.With an infrared DrägerSensor® IR, the device can be customized to detect methane, propane, or ethylene. .The device supports a 3-wire 4 to 20 mA analog output and relays, ensuring compatibility with different control systems
• Poison-resistant and fail-safe – the DrägerSensor IR
• Same design, same operating principle
• Three relays for controlling external equipment
• Safe, robust housing for every application
• Make the impossible possible with the remote sensor
For the detection of flammable gases in the lower explosion limit (LEL). It uses an infrared DrägerSensor® IR that can be configured for methane, propane, or ethylene. A 3 wire 4 to 20 mA analog output with relays makes it compatible with most control systems. It is poison-resistant against chemicals that can shorten a catalytic bead pellistor’s life. Long life optics result in lower maintenance costs compared to pellistors. IR technology is inherently fail-safe, meaning no unrevealed failures.
Type
Explosion proof / flameproof enclosed transmitter (“d”) or combined with increased safety (“d/e”)
Gases
Flammable gases and vapours
Measuring range
0 to 100% LEL
Display
Backlit 4 digit LCD; 3 Status LEDs (green/yellow/red)
Sensitivity
≤± 2 % LEL
Response time
T90 30 seconds (with splash guard)
Signal output analogue
Normal operation 4 to 20-mA
Maintenance Constant 3.4-mA or 4-mA ±1 mA 1 Hz modulation; (adjustable)
Power supply
10 to 30 V DC, 3-wire
Relay specification (optional)
2 alarm relays and 1 fault relay, single-pole two-way contact 5 A @ 230 VAC, 5 A @ 30 VDC, resistance-bound
Temperature
-40 to 65 °C (-40 to 149 °F) without relay
-40 to 65 °C (-40 to 149 °F) with relay
Pressure
20.7 to 38.4 inch Hg / 700 to 1,300 mbar
Humidity
0 to 100 % r. h., non-condensing
Transmitter housing
Epoxy coated copper-free aluminum or stainless steel SS316 L
Enclosure protection type
NEMA 4X & 7, IP65/66/67
Cable entry point
3/4 NPT threads or M20 cable gland
Dimensions (H x W x D), approx.
w/o docking station 11.0″ x 5.9″ x 5.1″ / 280 x 150 x 130 mm
w/ docking station 11.0″ x 7.1″ x 7.5″ / 280 x 180 x 190 mm
Weight, approx.
Aluminium w/o docking station 4.9 lbs / 2.2 kg
SS316 L w/o docking station 8.8 lbs / 4.0 kg
The Dräger Polytron® 5700 IR is a dependable, explosion-proof gas transmitter that detects flammable gases at LEL levels. Equipped with the Dräger PIR 7000 infrared sensor, it provides rapid detection of a wide range of common hydrocarbons. Its 3-wire 4 to 20 mA analog output and optional relay functions allow for smooth integration into various control systems.
• Efficient, stable and robust – the Dräger PIR 7000
• Choose a target gas with the smart gas library
• Same design, same operating principle
• Three relays for controlling external equipment
• Safe, robust housing for every application
• Make the impossible possible with the remote sensor
For the detection of flammable gases in the lower explosion limit (LEL). It uses a high performance infrared Dräger PIR 7000 sensor, which will quickly detect most common hydrocarbon gases. A 3 wire 4 to 20 mA analog output with optional relays makes it compatible with most control systems. With its stainless steel SS 316L enclosure and drift-free optics, the Dräger PIR 7000 is built to withstand the harshest industrial environments, offshore installations.
Type
Explosion-proof / flameproof enclosed transmitter (“d”) or combined with increased safety (“d/e”)
Gases
Flammable gases and vapours
Measuring ranges
0 to 20 … 100 % LEL
Display
Backlit 4 digit LCD; 3 Status LEDs (green/yellow/red)
Signal output analogue
Normal operation 4 to 20-mA
Power supply
10 to 30 V DC, 3-wire
Temperature
-40 to 77 °C (-40 to 170 °F) without relay
-40 to 70 °C (-40 to 158 °F) with relay
Transmitter housing
Epoxy coated copper-free aluminum or stainless steel SS316 L
Enclosure protection type
NEMA 4X & 7, IP65/66/67
Dimensions (H x W x D), approx.
w/o docking station 11.0” x 5.9” x 5.1” / 280 x 150 x 130 mm
w/ docking station 11.0” x 7.1” x 7.5” / 280 x 180 x 190 mm
Weight, approx.
Aluminium w/o docking station 8.6 lbs / 3.9 kg
SS316 L w/o docking station 12.6lbs / 5.7 kg
The Draeger Polytron 8200 CAT is an explosion-proof transmitter built to monitor flammable gases at LEL concentrations. Utilizing the catalytic bead DraegerSensor Ex … DD, it can detect a broad range of combustible gases and vapors. It offers a 3-wire 4 to 20 mA analog output, relay support, and digital communication through Modbus and Fieldbus for seamless system compatibility.
• Fast and stable – the DrägerSensor® Ex
• Easy device management via digital communication
• Same design, same operating principle
• Three relays for controlling external equipment
• Safe, robust housing for every application
• Make the impossible possible with the remote sensor
• Data logger
• Oil refineries/mining/OnShore/Off Shore /Water treatment Plant
• Continous monitoring of Hydrocarbon , Hydrogen Flammable Gases using Catalytic technology
• Measuement of Flammable inside the Duct upto 150degc ( Remote installation up to 30 meters Available)
• Hazardous area Application (zone 1,Zone2)
• Continous monitoring of Hygrogen in battery rooms
Type
Explosion-proof / flameproof enclosed transmitter (“d”) or combined with increased safety (“d/e”)
Gases
flammable gases and vapours
Measuring ranges
DQ 0 to 100 % LEL , LC 0 to 10 % LEL
Display
Backlit 4 digit LCD; 3 Status LEDs (green/yellow/red)
Accuracy/repeatability
≤ 1 % LEL
Response time
< 7 seconds to < 13 seconds
Signal output analogue
Normal operation – 4 to 20 mA, 3- or 4-wire, sink or source
Maintenance – Constant 3.4 mA or 4 mA ±1 mA 1 Hz modulation;(adjustable)
Fault – < 1.2 mA
Signal output digital
HART® w/ 3- or 4-wire, PROFIBUS® PA, FOUNDATION fieldbus™ H1 and Modbus RTU w/ 4-wire
Power supply
10 to 30 V DC
Relay specification (option)
2 alarm relays and 1 fault relay, single-pole two-way contact 5 A @ 230 VAC, 5 A @ 30 VDC, resistance-bound
Temperatur
-40 to 80 °C (-40 to 176 °F)
Pressure
20.7 to 38.4 inch Hg / 700 to 1,300 mbar
Humidity
0 to 100 % RH, non-condensing
Transmitter housing
Epoxy coated copper-free aluminum or SS316 L stainless steel
The Dräger Polytron® 8310 IR is an advanced explosion-proof gas transmitter developed for detecting combustible gases at LEL concentrations. It features an infrared DrägerSensor® IR, configurable for methane, propane, or ethylene. With a 3-wire 4 to 20 mA analog output and relay support, plus Modbus and Fieldbus communication, it easily integrates into a variety of control systems.
• Poison-resistant and fail-safe – the DrägerSensor® IR
• Easy device management via digital communication
• Same design, same operating principle
• Three relays for controlling external equipment
• Safe, robust housing for every application
• Make the impossible possible with the remote sensor
• Data logger
For the detection of combustible gases in the lower explosion limit (LEL). It uses an infrared DrägerSensor® IR that can be configured for methane, propane or ethylene. Besides a 3 wire 4 to 20 mA analogue output with relays, it also offers Modbus and Fieldbus protocols making it compatible with most control systems. Long life optics result in lower maintenance costs compared to pellistors. IR technology is inherently fail-safe, meaning no unrevealed failures.
Type
Explosion proof / flameproof enclosed transmitter (“d”) or combined with increased safety (“d/e”)
Gases
Flammable gases and vapours
Measuring range
0 to 20 … 100 % LEL
Display
Backlit graphic LCD; 3 Status LEDs (green/yellow/red)
Signal output analogue
4 to 20 mA, 3- or 4-wire, sink or source
Signal output digital
HART® w/ 3- or 4-wire, PROFIBUS® PA, FOUNDATION fieldbus™ H1 and Modbus RTU w/ 4-wire
Temperature
-40 to 65 °C (-40 to 149 °F) without relay
Pressure
20.7 to 38.4 inch Hg / 700 to 1,300 mbar
Transmitter housing
Epoxy coated copper-free aluminium or stainless steel SS316 L
Enclosure protection type
NEMA 4X & 7, IP65/66/67
Cable entry point
3/4” NPT threaded holes or M20 cable gland
Dimensions (H x W x D), approx.
11.0” x 5.9” x 5.1” / 280 × 150 × 130 mm
Weight, approx.
w/o docking station Aluminium 4.9 lbs / 2.2 kg
w/o docking station SS316 L 8.8 lbs / 4.0 kg
Designed to detect flammable gases at the lower explosion limit, the Dräger Polytron® 8700 IR is an explosion-proof transmitter equipped with the Dräger PIR 7000 infrared sensor. This sensor ensures quick detection of various hydrocarbon gases. The device supports a 3-wire 4 to 20 mA analog output, relays, and communication via Modbus and Fieldbus for wide compatibility with control systems.
• Efficient, stable and robust—the Dräger PIR 7000
• Easy device management via digital communication
• Same design, same operating principle
• Three relays for controlling external equipment
• Safe, robust housing for every application
• Make the impossible possible with the remote sensor
• Data logger
For the detection of combustible gases in the lower explosion limit (LEL). It uses a high performance infrared Dräger PIR 7000 sensor, which will quickly detect most common hydrocarbon gases. Besides a 3 wire 4 to 20 mA analog output with relays, it also offers Modbus and Fieldbus making it compatible with most control systems. The unique 4 beam signal stabilizing system makes the sensor resistant to dust or dirt deposits on the optical surfaces. Environmental and aging effects are compensated ensuring long term, drift free operation.
Type
Explosion proof / flameproof enclosed transmitter (“d”) or combined with increased safety (“d/e”)
Gases
Flammable gases and vapours
Measuring range
0 to 20 … 100 % LEL
Display
Backlit graphic LCD; 3 Status LEDs (green/yellow/red)
Signal output analogue
4 to 20 mA, 3- or 4-wire, sink or source
Signal output digital
HART® w/ 3- or 4-wire, PROFIBUS® PA, FOUNDATION fieldbus™ H1 and Modbus RTU w/ 4-wire
Temperature
-40 to 65 °C (-40 to 149 °F) without relay
Pressure
20.7 to 38.4 inch Hg / 700 to 1,300 mbar
Transmitter housing
Epoxy coated copper-free aluminium or stainless steel SS316 L
Enclosure protection type
NEMA 4X & 7, IP65/66/67
Cable entry point
3/4” NPT threaded holes or M20 cable gland
Dimensions (H x W x D), approx.
11.0” x 5.9” x 5.1” / 280 × 150 × 130 mm
Weight, approx.
w/o docking station Aluminium 4.9 lbs / 2.2 kg
w/o docking station SS316 L 8.8 lbs / 4.0 kg
The Dräger Polytron® SE Ex … DD sensing heads are cutting-edge gas detectors designed for real-time monitoring of flammable gases and vapors in the air. They operate based on the heat of reaction principle, where a chemical reaction within a catalytic bead (pellistor) inside the sensor generates heat, triggering the detection process.
• Dräger Polytron SE Ex
• Eight housing variants
• Comprehensive explosion protection
• Measuring signal
• Pellistor sensors type DD
• Environmental conditions
• Poison resistance
• Very short response times
• Measuring function for explosion protection
for the continuous monitoring of flammable gases and vapors in the ambient air. The measurement is based on the heat of reaction principle, where a chemical reaction takes place in a catalytic bead (so-called pellistor) inside the sensor. The sensing heads are intended to be used in the harsh industrial environment and connected to a suitable central controller by means of a 3-core cable.
Type
Sensing head with catalytic bead sensor
Gases and Vapors
Flammable gases and vapors in the ambient air such as methane, propane, acetone, acetylene, ammonia, petrol 065/095, benzene, 1.3-butadiene, n-butane, n-butyl acetate, diethyl ether, dimethyl ether, ethanol, ethylene (ethene), ethyl acetate, ethylene oxide, nhexane, hydrogen, methanol, methyl ethyl ketone (MEK), methyl methacrylate, n-nonane, n-octane, n-pentane, i-propanol, propylene (propene), propylene oxide, toluene and oxylene.
Maximum cable length
between sensing head and controller Polytron SE Ex : 3 x 1.5 mm2: 1450 m
Ambient conditions
atmospheric pressure: 800 … 1100 mbar
Expected sensor lifetime
> 3 years
Dimensions (w x h x d) and weight
Small standard housing 80 x 130 x 56 mm incl. sensor and cable gland, 0.5 kg
Housings
IP 66, glass fiber reinforced Polyester (GRP)
Measuring function (94/9/EC)
Measuring function for explosion protection acc. to EN 60079-29-1 for the a.m. gases and vapors
Cable gland
M 20 x 1.5 – exception: Sensing head Polytron SE Ex PR NPT1 DD (comes without cable gland)
The Draeger Pulsar 7000 Series are stationary open-path gas detectors designed to detect explosive hydrocarbons in gases and vapors. With their durable construction and exceptionally fast response time, the Draeger Pulsar 7000 Series offers a reliable solution for applications in the oil, gas, and chemical industries.
• Reliable and quick measuring
• Reliable even in adverse weather conditions
• Easy to align, configure and commission
• On site diagnostics
• Documented security – protocol and integrated data
• The right model for any job
• Chemical, oil and gas industry
• Fenceline monitoring
• Area monitoring
• Measured at a distance of up to 200 metres within two seconds
Type
Explosion-proof open-path gas detector based on infrared absorption spectroscopy
Gases
Wide range of hydrocarbons, including the alkane series from methane to hexane, propylene
Measuring ranges
Min. 0 to 4 LEL m, max. 0 to 8 LEL m
Gas category
IEC, NIOSH or PTB; selectable
Operating range
4 to 60 m, 30 to 120 m or 100 to 200 m
Signal output
Analogue – 4 to 20 mA , Digital – HART®7
Power consumption
< 5 W receiver, < 9 W transmitter
Operating voltage
18 to 32 VDC (24 VDC nominal)
Response time t90
< 2 s (under normal operating conditions when using the digitallink)
Skew tolerance
+/- 0.6°; +/- 1,6° with Tx S
Temperatur
-40 to + 60 °C, -40 to +140 °F
Pressure
800 to 1,100 hPa
Air humidity
0 to 100% rel. humidity, non-condensing
Material
Stainless steel AISI 316L “Marine Grade”
Protection class
IP66/IP67
Dimensions (W x H x D,approx.)
430 x 670 x 170 mm, incl. cable bend with vertical mounting plate
Weight (approx.)
9 kg (19.84 lbs), each transmitter and receiver incl. backplate and weather shield
Approvals
ATEX / IECEx, DNV GL, SIL 2 SC3 Certification by TÜV Nord (EN 61508),
Accurate and rapid gas detection is critical in numerous industries. The Dräger VarioGard® stationary gas detector series meets this need, with the Dräger VarioGard® 2300 IR tailored for detecting potential methane or LPG gas leaks.
• The one to count on
• Simple set-up and handling
• Gas library and variable measuring ranges
• Standardised output signal
The Dräger VarioGard 2300 comes equipped with highly precise infrared optical sensors, which greatly reduce the possibility of false alarms so that it should only sound when real danger is evident. The IR sensors are also extremely robust and rarely need to be recalibrated.
Type
Transmitter for the measurement of concentrations of gases in the ambient air
Gases and measuring ranges
CH4 : 0 to 100 % LEL
LPG : 0 to 100 % LEL
Display
2-colour LED (green, yellow): operation, maintenance
