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?DPWL? Leakage sensor


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?DPWL? Leakage sensor - 1

connectivity, monitoring and remote management systems sensors and protection devices “DPWL” Leakage sensor refrigerant gas leak detector For the detection of CFC, HFC and CO2 refrigerant gases, CAREL proposes a new range of sensors designed to satisfy all requirements in the fields of industrial refrigeration and air-conditioning (supermarkets, shopping centres, other public places) on units that require continuous control and monitoring, notifying system status in order to limit the problems caused by gas leaks. The sensors are calibrated to measure the most commonly used gases (R22, R134a, R404a, R407c, R410a and C02). When leaks above a certain concentration are detected, the sensor sends a signal to the controller or supervisor it’s connected to. The alarm is also signalled locally by audible and visual indicators. Preventing refrigerant gas leaks has the following advantages: • avoids system downtime or significant economic damage due to poor food storage, mean cost savings; • contributes to reducing greenhouse gas emissions, as established by the Kyoto protocol; • ensures surveillance over the safety of people occupying the environment where the refrigeration units are operating. Available in built-in or remote sensor. • savings: a prompt response avoids unit downtime; • safety: for people located in the vicinity of the unit and for food storage; • signal: prompt warning of system gas leaks Installation of the gas leak detector ensures compliance with European standards F-GAS and EN378 as well as ASHRAE 15 (US market).

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?DPWL? Leakage sensor - 2

Technical specifications Codes available Code Local alarm serial: RS485 Modbus analogue: 0 to 5 V, 1 to 5 V, 0 to 10 V, 2 to 10 V, 4 to 20 mA digital: relay 1 A, 24 Vac light (red LED) light (red LED) audible (buzzer): threshold 1500 ppm audible (buzzer): threshold 100 ppm DPWLB07000 Gas leak detector for R134a, semiconductor version DPWLB27000 5 m remote gas leak detector for R134a, IP66 semiconductor version DPWLC07000 Gas leak detector for R404a, semiconductor version DPWLC27000 5 m remote gas leak detector for R404a, IP66 semiconductor version Example applications DPWLD07000 Gas leak...

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