GSI 400
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GSI 400 - 1

GSI 400 Gas Detector NDIR Gas Detector Unit with an NDIR Infrared Sensor is suitable for indoor and outdoor use. The GSI 400 is suitable for the detection of refrigerants, methane, carbon dioxide and many other gases. It is also available in SIL and ATEX certified versions upon request. • Monitors the air for toxic gas concentrations • Low cross-sensitivity to other gases • Can be used in dusty and dirty environments • High accuracy • Long service life • IP54 (B) and IP65 (T) variants available Sensor Technology The GSI 400 Gas Detector can be supplied with a variety of different infrared sensors and can be used for a variety of applications. Sensor Connection GSI 400 can be supplied with an additional EX measuring head suitable for operation in ATEX Zone 2 areas. GSI 400 can also be supplied with SIL2 and SIL3 certificates. Details of these versions and variants are available on request. Our standard gas types are listed below. We recommend a stable 24 V DC power supply to operate the gas sensors GSI 400. The allowed voltage range is 18 to 36 V DC. The sensor may be connected using a shielded cable with two twisted pairs, i.e. JY(St)Y 2 x 2 x 0.8 mm, using the wires: Red: +24 V DC, Terminal 1 White: Sensor output 4 - 20 mA, Terminal 2 Black: 0 V, Terminal 3 Yellow: PE/Shield, Terminal 4 Adjustment Instructions NDIR sensors require a 1 hour warm up period prior to adjustment. Please refer to the Operating Instructions regarding this. The test gas must be at ambient temperature i.e. the same temperature as the sensor. The adjustment of the gas sensor must only be carried out by suitably qualified persons. In order to adjust and calibrate any SCENTY® Gas Warning System and Gas Sensors, the corresponding Software modules are required. Rev.III_102019_GSI 400_engL • Subject to alterations We recommend twisting the supplementary earth wire and the yellow wire at the control unit and connecting those two to sensor terminal 4 (PE). At the sensor end the supplementary wire is to be connected to the enclosure, making sure that the bare wire does not touch any of the electronic parts. If the sensor box is mounted on a steel structure connected to PE, the supplementary wire and terminal 5 should not be connected to the enclosure. Safety Instructions Careful handling of the gas sensors and their use in areas where monitoring is required needs specialist knowledge and procedures, which can be found in the relevant Instruction Manual. It is theretofore imperative that the section in the manual titled “Safety Instructions for Installers and Operators“ is read and strictly observed! We control GASES - since 1978 HAMBURG

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GSI 400 - 2

Waterproof? Of course! Gas sensors for all your requirements! The innovative design of the housing, makes installation simple and quick, as well as enabling their use indoors and outdoors. SCENTY® Gas Sensors are the first choice for safe monitoring technology. All gas sensors of the SCENTY® Series are available in a weather-resistant housing made of glass-fibre reinforced polyester. The diffusion measuring heads developed by HTK are absolutely waterproof and therefore particularly suitable for use in the food industry! The cover screws of the housing are made of corrosion-free polyamide...

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GSI 400 - 3

Assembly instructions Everything at a glance Further information on installation heights and the dimensions of our sensor housings and our Stainless steel protective cover can be found in our Data Sheet “Gas Sensor Mounting Instructions'1. HTK Hamburg GmbH Frahmredder 49 22393 Hamburg Phone: +49 (0)40 - 600 38 38 - 0 Fax: +49 (0)40 - 600 38 38 - 99 info@htk-hamburg.com © Copyright 2019 - All contents of this document, in particular Texts, photographs and graphics are protected by copyright. All rights, including reproduction, publication, processing and translation are reserved, HTK Hamburg...

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