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Combustible gases sensors

Combustible gases sensors

Combustible gases sensors

Product catalog summary
Overview
The document provides technical specifications and details for the RTC Series Explorer, a range of combustible gas sensors and transmitters designed for use in hazardous environments, particularly in naval applications. These sensors are housed in an explosion-proof aluminum case and are compliant with ATEX 94/9/EC security systems.

Specifications
  • Mechanical: The sensors are encased in die-cast aluminum with a ¾" NPT cable gland connection. Dimensions are 71 (H) x 40 (D) x 53 (W) mm, and the weight is 620 grams. They have a protection degree of IP-6X.
  • Electrical: Power supply ranges from 12 to 24 Vdc with a power consumption of 3 W. The connection is 4-20mA with 3 conductors.
  • User Interface: Features an internal 7-segment, 4-digit LCD display and three buttons for programming and service operations.
  • Sensor System: The response time is T90<25 seconds with a sensitivity of 0.1% and linearity of 100% on a scale of 0-100% LEL Methane. Maximum exposure is 5% Vol. CH4.
  • Operating Conditions: Temperature range is -20°C to +55°C, humidity is 0% to 95% relative humidity (non-condensing), and pressure is atmospheric +/- 10%.
  • Approvals: Certified for hazardous areas under ATEX II G Ex D IIC T6 Gb and maritime applications under RINA ELE 272113CS and MED 272113CS.

Sensor Types
The RTC series includes several sensor types:
  • RTC 1001: Standard combustible gas transmitter sensor for 0-100% LEL with CH4 calibration.
  • RTC 1002: Poison-resistant version for atmospheres with silicones, lead, sulfur compounds, and halogenated hydrocarbons.
  • RTC 1003: Thermal conductivity sensor for 0-100% volume measurement of gases like Methane, Carbon Dioxide, and Helium.
  • RTC 1004 & 1005: Variants with different calibrations from CH4, specified upon ordering.

Gas Detection Range
The sensors can detect a wide range of gases, each from 0 to 100% LEL, including Methane, Propane, Butane, Ethanol, Ammonia, Acetone, Benzene, and many others.

Additional Features
The sensors are equipped with a special circuit for automatic zero point drift compensation and a library of combustible gases with correction factors relative to standard gas calibration (CH4). They are compatible with Explorer control units and any unit accepting the 4-20mA signal.
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Catalog excerpts

Combustible gases sensors-1

RTC SERIES EXPLORER Combustible gases Sensors / Transmitters ■ Ex aluminum case for %" NPT cable gland ■ For A TEX 94/9/EC security systems ■ For naval applications RINA - MED ■ Stainless steel sensor ■ Complete set of accessories ■ Excellent value for money ■ High response speed The RTC series sensors enables continuous monitoring of combustible gases (%LEL) in Exd classified areas. The watertight die-cast aluminium container complies with ATEX specifications. The internal display, mounted on the Transmitter's PCB card, facilitates the periodic control procedures, verification and calibration, through the simple use of 3 keys. These sensors are available in the standard version (VQ-01 type) and also in the "poison resistant" version (VQ-21 type) to resist aggressive chemicals such as solvents. The range of RTC sensors is completed with the thermal conductivity sensor (VQ-06 type) for measures up to 100% vol. The output signal is 4-20mA with 3 conductors. All RTC sensors are compatible with Explorer control units and any unit that accepts the 4-20mA signal. The transmitters are equipped with a special circuit that automatically compensates for the zero point drift. With the keys and the display it is possible to access a library of combustible gases with relative correction factors compared to the standard gas calibration (CH4). The catalytic sensors VQ-01 and VQ-06 for flammable gases, and the electrochemical oxygen, CO and H2S sensors are approved for applications in the naval sector: RI.NA, MED. The RTC series consists of the following sensors: ■ RTC 1001:Transmitter sensor of combustible gases 0-100%LEL, VQ-01, standard applications, CH calibration4 ■ RTC 1002:Transmitter sensor of combustible gases 0-100 %LEL, VQ-21 PR, resistant to atmospheres containing silicones, lead, sulphur compounds, and halogenated hydrocarbons ■ RTC 1003:Transmitter sensor 0-100 %VOL Thermal conductivity, VQ-06, for % volume measurement of Methane, Carbon Dioxide, Helium etc. ■ RTC 1004:Transmitter sensor of combustible gases 0-100%LEL, VQ-01, standard applications, calibration different from CH4 (to be specified when ordering) ■ RTC 1005:Transmitter sensor of combustible gases 0-100%LEL, VQ-21 PR, calibration different from CH4(to be specified when ordering) /#S. C. €.110.000,00 fully paid capital C.C.I.A.A. 38999 GE RE.A. 365226 GE VAT and fiscal code 03618890101 MrECOM industrials s.r.l. Via Pietro Chiesa, 25 r. - 16149 Genoa - Italy Tel. (+39) 010.469.56.61 r.a.- Fax (+39) 010.642.42.05 Email: [email protected] http: //www.recomindustriale.com

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Combustible gases sensors-2

Technical specifications recom industriale s.r.I. Via Pietro Chiesa, 25 r. - 16149 Genoa - Italy Tel. (+39) 010.469.56.61 r.a.- Fax (+39) 010.642.42.05 Email: [email protected] http: //www.recomindustriale.com / S. C. €.110.000,00 fully paid capital C.C.I.A.A. 38999 GE RE.A. 365226 GE VAT and fiscal code 03618890101

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