Gas / particle concentration transducers

• Suitable for ATEX Zones 2 and 22
• Stable long-life electrochemical sensor
• Range: 0...25 % vol O2
• Resolution: 0,01 % vol O2
• Analog output: 2 x 4...20 mA / 0...10 V (user-settable)
• Digital output: RS-485 (Modbus RTU protocol)
• Option: relay output (2 x SPST)
• Operating temperature: -40...+60 °C; 5…95 % RH; 0,9…1,1 atm.
• Supply: 12...36 VDC (default), 24 VAC or 230 VAC

• Suitable for ATEX Zones 2 and 22
• Highly sensitive Photo Ionization Detector (PID) sensor
• Detectable gases: VOCs (acetone, ethanol, toluene, xylene etc.)
• Default calibration: Isobutylene
• Range: 0…40 / 0…200 ppm isobutylene
• Resolution: 0,01 / 1 ppm
• Analog output: 2 x 4...20 mA / 0...10 V (user-settable)
• Digital output: RS-485 (Modbus RTU protocol)
• Option: relay output (2 x SPST)
• Operating temperature: -40...+65 °C; 0…95 % RH; 0,9…1,1 atm.
• Supply: 12...36 VDC (default), 24 VAC or 230 VAC

• Suitable for ATEX Zones 2 and 22
• Stable long-life metal-oxide sensor
• Detectable gases: acetone, ethanol, toluene, xylene etc.
• Default calibration: toluene
• Range: 0...1000 ppm (toxic range) / 0...100% LEL (flammable range)
• Resolution: 1 ppm for toxic ranges / 0,1 % LEL for flammable range
• Analog output: 2 x 4...20 mA / 0...10 V (user-settable)
• Digital output: RS-485 (Modbus RTU protocol)
• Option: relay output (2 x SPST)
• Operating temperature: -40...+70 °C; < 95 % RH; 0,9…1,1 atm.
• Supply: 12...36 VDC (default), 24 VAC or 230 VAC

• Gas measuring, monitoring and warning controller (Multi-Sensor-Controller MSC) for reliable detection of combustible, toxic and refrigerant gases
• Flexible control: 3 relays (SPDT, potential-free, 250 V)
• Intelligent Communication: RS-485 interface with DGC and Modbus protocol
• Precise signal transmission: 4–20 mA input and output for seamless system integration, up to 3 sensors including remote

• SF6 gas density monitor for high voltage switchgear
• Three versions: 1 / 2 / 3 stages (8781 / 8782 / 8783)
• Measurement range: 0...1,1 MPa (mechanical), 0...0,85 MPa (electronic)
• Output signal: floating change-over contact (SPDT) / 6.5...20 mA current loop
• Switch point: factory calibrated
• Media temperature: -40...+80 °C
• Ambient temperature: -40...+80 °C
• Protection class: IP65

• Long-life metal-oxide gas sensor
• Range 0...100 % LEL H₂
• Resolution 0,1 % LEL H₂
• Outputs 2 x 4...20 mA / 0...10 V, RS-485
• Attached or remote sensor options

• Stable long-life electrochemical gas sensor
• Range 0...100 / 0...1000 ppm H₂S
• Resolution 0,1 / 1 ppm H₂S
• Outputs 2 switches, 2 x 4...20 mA / 0...10 V, RS-485
• Default alarm set-points 10 / 20 ppm H₂S

• Stable long-life electrochemical gas sensor
• Range 0...100 / 0...1000 ppm H₂S
• Resolution 0,1 / 1 ppm H₂S
• Outputs 2 x 4...20 mA / 0...10 V, RS-485
• Attached or remote sensor option

• Electrochemical gas sensor
• Range: 0...100 / 0...2000 ppm H₂S
• Resolution: 0,1 / 1 ppm H₂S
• Analog output: 2 x 4...20 mA / 0...10 V (user-settable)
• Digital output: RS-485 (Modbus RTU protocol)
• Option: relay output (2 x SPST) / LCD indicator
• Option: remote sensor (default cable length is 3 m)
• Operating temperature: -40...+50 °C
• Supply: 11...30 VDC / 24 VAC or 90...265 VAC

• Stable long-life metal-oxide gas sensor
• Range 0...100 % LEL (0...5 % vol) CH₄
• Resolution 0,1 % LEL (50 ppm) CH₄
• Outputs 2 switches, 2 x 4...20 mA / 0...10 V, RS-485
• Default alarm set-points 20 / 50 % LEL CH₄

• Stable long-life metal-oxide gas sensor
• Range 0...100 % LEL CH₄
• Resolution 0,1 % LEL CH₄
• Outputs 2 switches, 2 x 4...20 mA / 0...10 V, RS-485
• Default alarm set-points 20 / 50 % LEL CH₄
• Visual and acoustic alarms

• Stable long-life metal-oxide gas sensor
• Range 0...100 % LEL (0...5 % vol) CH₄
• Resolution 0,1 % LEL (50 ppm) CH₄
• Outputs 2 x 4...20 mA / 0...10 V, RS-485
• Attached or remote sensor options

• Metal-oxide gas sensor
• Range: 0...100% LEL (0...5 %) CH₄
• Resolution: 0,1 % LEL (50 ppm) CH₄
• Analog output: 2 x 4...20 mA / 0...10 V (user-settable)
• Digital output: RS-485 (Modbus RTU protocol)
• Option: relay output (2 x SPST) / LCD indicator
• Option: remote sensor (default cable length is 3 m)
• Operating temperature: -40...+70 °C
• Supply: 11...30 VDC / 24 VAC or 90...265 VAC

SIRO is an indoor air quality transmitter with a modern design. The transmitter is available with several optional air quality sensors. The modular device can be equipped with CO2 concentration and VOC (Volatile Organic Compounds) measurements or alternatively PM (Particulate Matter) measurement, and in addition, temperature and humidity measurements. SIRO-MOD series models use Modbus serial communication protocol.

• Measuring elements:
  • CO2: Non-dispersive infrared (NDIR); 0...2000 ppm
  • VOC: Complementary Metal Oxide Semiconductor (CMOS); range: * - see datasheet
  • PM: Laser-based light scattering particle sensing
  • Temperature: Integrated to CMOS
  • Relative humidity: Thermoset polymer capacitive sensing element
• Field configurable outputs for selected measurements; Configuration possible through MODBUS
• Proportional output options including voltage (0–10 V, 0–5 V, 2–10 V) and optional current (4–20 mA); MODBUS
• Offset feature enabling field calibration for each measurement parameter (CO2, VOC, PM, RH, T)
• Optional LCD-display and buttons
• Operating temperature: 0…50 °C
• Protection standard: IP20

• Electrochemical gas sensor
• Range: 0...250 ppm NO
• Resolution: 1 ppm NO
• Analog output: 2 x 4...20 mA / 0...10 V (user-settable)
• Digital output: RS-485 (Modbus RTU protocol)
• Option: relay output (2 x SPST) / LCD indicator
• Option: remote sensor (default cable length is 3 m)
• Operating temperature: -30...+50 °C
• Supply: 11...30 VDC / 24 VAC or 90...265 VAC

• Stable long-life electrochemical gas sensor
• Range 0...20 / 0...200 ppm NO₂
• Resolution 0,02 / 0,1 ppm NO₂
• Outputs 2 switches, 2 x 4...20 mA / 0...10 V, RS-485
• Default alarm set-points 3 / 6 ppm NO₂

• Stable long-life electrochemical gas sensor
• Range 0...20 / 0...200 ppm NO₂
• Resolution 0,02 / 0,1 ppm NO₂
• Outputs 2 x 4...20 mA / 0...10 V, RS-485

• Electrochemical gas sensor
• Range:
• -- 0...20 ppm NO₂
• -- 0...200 ppm NO₂
• Resolution:
• -- 0,1 ppm NO₂ for 20 ppm range
• -- 1 ppm NO₂ for 200 ppm range
• Analog output: 2 x 4...20 mA / 0...10 V (user-settable)
• Digital output: RS-485 (Modbus RTU protocol)
• Option: relay output (2 x SPST) / LCD indicator
• Option: remote sensor (default cable length is 3 m)
• Operating temperature: -20...+50 °C
• Supply: 11...30 VDC / 24 VAC or 90...265 VAC

• Stable long-life electrochemical gas sensor
• Range 0...20 % vol O₂
• Resolution 0,01 % vol O₂
• Outputs 2 switches, 2 x 4...20 mA / 0...10 V, RS-485
• Default alarm set-points 19,5 / 18 % vol O₂

• Stable long-life electrochemical gas sensor
• Range 0...20 % vol O₂
• Resolution 0,01 % vol O₂
• Outputs 2 x 4...20 mA / 0...10 V, RS-485
• Attached or remote sensor options

• Electrochemical gas sensor
• Range: 0...25 % O₂
• Resolution: 0,01 % O₂
• Analog output: 2 x 4...20 mA / 0...10 V (user-settable)
• Digital output: RS-485 (Modbus RTU protocol)
• Option: relay output (2 x SPST) / LCD indicator
• Option: remote sensor (default cable length is 3 m)
• Operating temperature: -30...+50 °C
• Supply: 12...36 VDC, 24 VAC or 230 VAC

• Stable long-life electrochemical gas sensor
• Range 0...5 ppm O₃
• Resolution 0,03 % ppm O₃
• Outputs 2 switches, 2 x 4...20 mA / 0...10 V, RS-485
• Default alarm set-points 0,3 / 1 ppm O₃
• Attached or remote sensor

• Stable long-life electrochemical gas sensor
• Range 0...5 ppm O₃
• Resolution 0,03 % ppm O₃
• Outputs 2 x 4...20 mA / 0...10 V, RS-485
• Attached or remote sensor

• Electrochemical gas sensor
• Range: 0...5 ppm O₃
• Resolution: 0,01 ppm O₃
• Analog output: 2 x 4...20 mA / 0...10 V (user-settable)
• Digital output: RS-485 (Modbus RTU protocol)
• Option: relay output (2 x SPST) / LCD indicator
• Option: remote sensor (default cable length is 3 m)
• Operating temperature: -40...+50 °C
• Supply: 11...30 VDC / 24 VAC or 90...265 VAC

• For R-12, R-123, R-125, R134a, R143, R-22, R404a, R-407c, R-410a, etc.
• Default calibration R-404a
• Range 0...1000 ppm
• Resolution 1 ppm
• Outputs 2 switches, 2 x 4...20 mA / 0...10 V, RS-485

• For R-12, R-123, R-125, R134a, R143, R-22, R404a, R-407c, R-410a, etc.
• Default calibration R-404a
• Long-life MOS sensor
• Range 0...1000 ppm
• Resolution 1 ppm
• Outputs 2 x 4...20 mA / 0...10 V, RS-485

• MOS gas sensor
• Detected gases: R-12, R-123, R-125, R-134a, R-143, R-22, R-404a, R-407c, R-410a, R1234yf, etc.
• Standard calibration: R-404a
• Range: 0...1000 ppm HFC
• Resolution: 1 ppm HFC
• Analog output: 2 x 4...20 mA / 0...10 V (user-settable)
• Digital output: RS-485 (Modbus RTU protocol)
• Option: relay output (2 x SPST) / LCD indicator
• Option: remote sensor (default cable length is 3 m)
• Operating temperature: -30...+60 °C
• Supply: 11..30 VDC / 24 VAC arba 90...265 VAC

• SF6 gas monitor for high and medium voltage switchgear
• Measurement range: 0...60 kg SF6/m3
• Output signal: current pulses onto supply current, current loop
• Media temperature: -40...+70 °C
• Protection class: IP65
• Shock proof, suitable for outdoor usage, compact

• SF6 gas monitor for high voltage switchgear
• Four versions: 1 / 2 / 3 / 4 stages (8716 / 8726/ 8736 / 8746)
• Measurement range: 0...1.1 MPa
• Output signal: floating change-over contact (SPDT)
• Switch point: factory calibrated
• Media temperature: -40...+80 °C
• Protection class: IP67
• Independent, galvanically separated circuits

• Stable long-life electrochemical cell
• Range 0...50 / 0...2000 ppm SO2
• Resolution < 0,1 / 1,5 ppm SO2
• Outputs 2 switches, 2 x 4...20 mA / 0...10 V, RS-485
• Default alarm set-points 2 / 5 ppm SO2
• Attached or remote sensor

• Stable long-life electrochemical cell
• Range 0...50 / 0...2000 ppm SO2
• Resolution 0,1 / 1,5 ppm SO2
• Outputs 2 x 4...20 mA / 0...10 V, RS-485
• Attached or remote sensor

• Electrochemical gas sensor
• Range: 0...50 ppm SO₂ / 0...2000 ppm SO₂
• Resolution: 0,1 ppm SO₂ / 1,5 ppm SO₂
• Analog output: 2 x 4...20 mA / 0...10 V (user-settable)
• Digital output: RS-485 (Modbus RTU protocol)
• Option: relay output (2 x SPST) / LCD indicator
• Option: remote sensor (default cable length is 3 m)
• Operating temperature: -30...+50 °C
• Supply: 11..30 VDC / 24 VAC or 90...265

Temperature, humidity, pressure, CO2 regulators, 3 binary inputs, RS-485, RS-232 interfaces, Ethernet and 2 relay outputs.

Temperature, humidity, pressure, CO2 transducers Pxxxx, Txx1x. LCD display.

• For toluene, xylene, ethanol, etc.
• Default calibration toluene
• Stable long-life metal-oxide sensor
• Range 0...100 % LEL
• Resolution 3 ppm LEL
• Outputs 2 relays, 2 x 4...20 mA / 0...10 V, RS-485
• Default alarm set-points 20 % / 50 % LEL
• Remote probe option

• For toluene, xylene and ethanol
• Default calibration toluene
• Stable long-life metal-oxide sensor
• Range 0...100 % LEL
• Resolution 0,1 % LEL
• Outputs 2 relays with switch-over contacts
• Default alarm set-points 10 % / 25 % LEL
• Visual and acoustic alarms

• For toluene, xylene and ethanol
• Default calibration toluene
• Long-life metal-oxide sensor
• Range 0...100 % LEL (0...1 % vol) toluene
• Resolution 3 ppm toluene
• Outputs 2 relays, 2 x 4...20 mA / 0...10 V, RS-485
• Default alarm set-points 20 % / 50 % LEL
• Acoustic alarm

• For toluene, xylene, ethanol, etc.
• Default calibration toluene
• Long-life metal-oxide sensor
• Range 0...100 % LEL
• Resolution 3 ppm toluene
• Outputs 2 x 4...20 mA / 0...10 V, RS-485
• Remote probe option

• For toluene, xylene, ethanol and 2-propanol
• Default calibration toluene
• Stable long-life metal-oxide sensor
• Range: 0...100 % LEL or 0…500 ppm
• Resolution 0,1 % LEL or 1 ppm
• Outputs: 2 relays with switch-over contacts
• Acoustic and visual alarms

• Photo ionization detector
• Detected vapors: acetone, ethanol, toluene, xylene, etc.
• Standard calibration: isobutylene
• Range: 0...40 / 0...200 ppm (isobutylene)
• Resolution: 1 / 1 ppb
• Analog output: 2 x 4...20 mA / 0...10 V (user-settable)
• Digital output: RS-485 (Modbus RTU protocol)
• Option: relay output (2 x SPST) / LCD indicator
• Option: remote sensor (default cable length is 3 m)
• Operating temperature: -40...+65 °C
• Supply: 11...30 VDC / 24 VAC or 90...265 VAC

• Metal-oxide gas sensor
• Detected vapors: acetone, ethanol, toluene, xylene, etc.
• Standard calibration: toluene
• Range: 0...100 % LEL (flammable range) / 0...1000 ppm (toxic range)
• Resolution: 0,1 % LEL / 1 ppm
• Analog output: 2 x 4...20 mA / 0...10 V (user-settable)
• Digital output: RS-485 (Modbus RTU protocol)
• Option: relay output (2 x SPST) / LCD indicator
• Option: remote sensor (default cable length is 3 m)
• Operating temperature: -40...+70 °C
• Supply: 11...30 VDC / 24 VAC or 90...265 VAC