Model GD233 - Single Point Carbon Dioxide Detector And Alarm Unit Brochure

GD231 SINGLE POINT INFRA-RED REFRIGERANT LEAK DETECTOR FEATURES • Infra-red stand alone pre-calibrated REFRIGERANT gas detector • Multi colour LED array for indication of gas concentration • Calibrated for specific refrigerants to ensure complete accuracy • Wide range of CFC, HCFC and HFC gases monitored. Range 0-2000 ppm with 2x factory pre-set alarm levels • 12-24 v DC powered. 4-20 mA output or 2 x alarm relay versions available • Low maintenance, ultra stable, long life Detector with onboard auto zero facility • Wide Temperature range Stand alone, single point Infra-red refrigerant detector and alarm unit ideal for small installations. Using infra-red technology the GD231 is specifically designed to measure very low levels of refrigerant gas in air. It eliminates the inherent problems associated with other methods of refrigerant detection such as semi-conductor and electro-chemical sensors. The sensor is immune to poisoning or cross sensitivity and is a versatile and robust instrument. Designed as a single point, self contained unit but can be connected to a central control panel for group alarms. Flanshaw Way ? Wakefield ? West Yorkshire ? WF2 9LP Tel: +(44) 01924 380700 Fax: +(44) 01924 361700 Email: sales@tqplc.com Web: www.tqplc.com The GD231 is used to detect the presence of Freon’s, HFC’s in plant rooms, freezer chests or display cabinets where a leakage of refrigerant gas may occur. The GD231 includes a diffusion filter, while preventing ingress of dust and other particulates allows the atmosphere to reach the optical bench of the instrument. The LED multi colour array shows increasing Refrigerant levels and alarm trigger points Integral alarm relays, with 2 distinct trigger points can be used to start extraction fans and trigger alarm beacons. Alternatively the 4-20 mA outputs from a group of sensors could be connected to a TQ 4000 control panel or similar third party control system capable of providing indication of concentration levels and group alarms if required. RS485, MODBUS output available for remote monitoring via an optional add on module. The GD 231 is a low maintenance sensor but has full auto zero function so requiring no calibration in the field. TQ Environmental Plc, 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 Environmental. SPECIFICATION Construction ABS wall mounted enclosure. Indication 8 x LED multi colour array, with 2 x alarm indication LED’s Ingress Protection IP43, increased ingress protection can be provided Cable gland size M12 gland entries, glands not supplied Weight 0.5 Kg Overall Dimensions 100mm W x 150mm H x 50mm D Range Typically 0-2000ppm R134a. The unit may be factory calibrated to other Refrigerants and ranges. Outputs All versions have LED visual indication of levels Option 1, 4-20mA source into 600 ohms. Option 2, 2 x relay output version (C & NO contacts)Power Operating voltage 24vDC nominal (can be supplied from 12vDC if 4-20 mA output is not required. Operating Current 75mA @ 24VDC Accuracy +/- 2% fsd ( 4-20 mA version ) Response Time <10 seconds to T50, <20 seconds to T90 Temperature Range -20o to +50oC Humidity Range 0 to 99% R.H (non condensing) Built-in Self Test Continuous Gases R134a. R407c,R12,R11, R22, R404a plus many otherrefrigerant gases. please specify on order. Non-Intrusive Adjustments Calibrated for up to 3 years, with manual auto zero Life expectancy > 5 years Warranty 12 Months PARTS LIST 231-020 GD 231 IR Refrigerant Sensor 0-1000 ppm. Multi colour LED array. C/W 4-20 mA analogue output 231-022 GD 231 IR Refrigerant Sensor 0-1000 ppm. Multi colour LED array. C/W 2 x volt free, preset alarm relays. 340-264 Wall plug type mains power supply for GD231 and GD 233 model gas detectors D1-GD231-0711 abcdefg Cert No. LRQ 0958602 Flanshaw Way ? Wakefield ? West Yorkshire ? WF2 9LP Tel: +(44) 01924 380700 Fax: +(44) 01924 361700 Email: sales@tqplc.com Web: www.tqplc.com