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GD129REF SINGLE POINT INFRA-RED REFRIGERANT GAS DETECTOR FEATURES • Refrigerant gas sensor for Hazardous area operation. • Pre-calibrated for specific refrigerants enabling very low levels of gas to be monitored. • Very stable Infra-red design for reliable operation and long life expectancy. • Wide range of CFC, HCFC and HFC gases available. • 4-20mA output as standard, gas concentration continuously monitored • State of the art SMT Components. No heaters, mirrors or optics to get dirty • Low power usage. Wide range of temperature operation The GD129REF, Refrigerant sensor operates on tried & tested infra-red adsorption principle. A unique sensor protection system permits operation in the harshest conditions offshore and in dusty, humid environments. Remote sensor capability eliminates the need for using expensive open path systems in inaccessible locations, ducts and heated enclosures. The sensor is immune to poisoning and high gas concentrations and is available for most commonly available refrigerants, with low cross sensitivity to other gasses. Designed for use in offshore applications and with a protection rating IP55, the GD129REF is a versatile and robust instrument incorporating proven technology. TQ Environmental Limited Flanshaw Way Wakefield West Yorkshire WF2 9LP Tel: +44 (0)1924 380700 Fax: +44 (0)1924 361700 Email: [email protected] Web: www.tqenv.com The GD129REF is used to detect the presence of Refrigerant gases. The 4-20 mA output of the sensor would normally be connected to a TQ control panel or similar third party control system capable of providing indication and alarm generation. The GD129REF is used for diffusion sensing applications, where the sensor is positioned at the point of monitoring and the gas diffuses through the sensor’s optical path. These sensors are not affected by being gassed over range and can be used in inert atmospheres as the sensor does not rely on oxygen being present to operate correctly. The GD129REF is a low maintenance sensor but has full auto zero and span functions allowing their calibration in the field. Can be calibrated in situ, even in the hazardous area as the junction box, enclosure does not have to be opened to perform the calibration. SPECIFICATION Construction Ingress Protection Conduit Entry Weight Overall Dimensions Temperature Range Humidity Range Shock & Vibration Resistance Outputs Power Accuracy Repeatability Gases and Ranges Response Time Built-in Self Test Non-Intrusive Adjustments Life expectancy Warranty Certification Other options are available in the GD129 range for CO2 and a full range of flammable gases. Nominal Range 0-2000 ppm R134a. Most standard refrigerants can be catered for however, Specify refrigerant type on enquiry or order, <10 seconds to T50, <20seconds to T90 on CH4 & CO2 Continuous Calibrated for up to 2 years, with full auto zero and calibration facility. >5 years 12 Months Exd IIC T6 (Ta=-20oC to 55oC) SIRA 01 ATEX IIII 115 215 Approx TQ Environmental Limited, operate a policy of continual product development which means the specification is subject to change without prior notice. For full assistance with your application contact TQ. Sensor Housing - 316 Stainless Steel with hydrophobic protection barrier Protection guard - Stainless Steel Junction Box - Cu free aluminium with polyester paint finish IP55 M20 ca 2.1Kg 130mm W x 230mm H x 120mm D -20o to +50oC 0 to 99% R.H (non condensing) Shock: Half Sine 15g, 20ms duration on all axis Vibration: 3 - 10 Hz, Displacement 0.5mm 10 - 50 Hz, 2m/s2 4-20mA source into 600 ohms (max) Operating voltage 24VDC (11-30VDC) Operating Current 75mA @ 24VDC, 2.1 watts +/- 2% fsd on all ranges (linearised) +/- 1% fsd 45 81.5 81.5 PARTS LIST 340-100 GD129REF - IR Sensor 0-2000 ppm Refrigerant Refrigerant type to be specified on order. Please consult TQ Environmental for other options and ranges available. Cert No. LRQ 0958602 D2-GD129REF-0315 TQ Environmental Limited Flanshaw Way Wakefield West Yorkshire WF2 9LP Tel: +44 (0)1924 380700 Fax: +44 (0)1924 361700 Email: [email protected] Web: www.tqenv.com