ADT-23 34000 pages

PolyGard® Transmitter ADT23-3400 for combustible gases DESCRIPTION ADT transmitter with digital processing of the measured values and temperature compensation for the continuous monitoring of the ambient air and detection of combustible gases and vapours. The calibration routine with selective access release enables the comfortable calibration of the transmitter. In addition to the standard analog output (0) 4-20 mA or (0) 2- 10 V DC the ADT-23 is equipped with a RS-485 interface for different protocols. Two relays with adjustable switch threshold are available as an option. APPLICATION The transmitter is used within a wide commercial range for detecting flammable gases and vapours. Due to the output signal and the RS-485 interface the transmitter ADT-23 is compatible to the PolyGard gas controller series MGC and DGC by MSR-E as well as to any other electronic control or automation system. Standard enclosure FEATURES ■ Digital processing of the measured values including temperature compensation Continuous monitoring Low zero-point drift Good poisoning permanence Long life sensor Modular design (plug-in) Simple maintenance Comfortable calibration with selective access release Reverse polarity protected, overload protected and short-circuit proof (0) 4 - 20 mA / (0) 2 - 10 V analog signal output, selectable Serial interface RS-485 IP65 protected Manual calibration via potentiometer (optional) Manual addressing at RS-485 mode (optional) 4 - 20mA analog input for external transmitter (optional) Relay output (optional) Integrated buzzer (optional) LCD display (optional) Heating (optional) Duct mounting (optional) ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ MSR Electronic GmbH | Wurdingerstr. 27a | 94060 Pocking GERMANY 1 | Jan 09 Tel: +49 8531-9004-0 Fax: -44 Specification subject to change without notice www. msr-electronic,de PolyGard® is a registered trademark of MSR electromc