PolyGard® Transmitter ADT23-34XX for combustible gases

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.

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)
Approved according to EN 61010-1; ANSI/UL 61010 1; CAN/CSA-C22.2 No. 61010-1
Relay output (optional)
Integrated buzzer (optional)
LED flashlight (optional)
LCD display (optional)
LED status display (optional)
Heating (optional)
Duct mounting (optional)
Sensor Performance
Gas type Combustible gases/ vapours (see order inform.)
Sensor element Ex sensor, catalytic bead (pellistor)
Measuring range 0 - 100% LEL
Accuracy ± 1 % of reading
Long-term zero point drift < ± 6 % measuring range /year
Long-term sensitivity drift < ± 1.5 % measuring range / month
Response time t50 3 s; t90 10 s /methane
Sensor life expectancy 3 years/normal operating environment
Temperature range - 20 °C to + 50 °C (-4 °F to 122 °F) w/o heating
Temperature drift 1%
Humidity range 5 – 95 % RH non-condensing
Pressure range Atmospheric ± 20 %
Storage temperature 5 °C to 30 °C (41 °F to 86 °F)
Storage period Max. 6 months
Mounting height Depending on gas type
Electrical
Power supply 16 - 28 VDC/AC, reverse polarity protected
Power consumption (without options) 35 mA, max. (0.85 VA)
Output Signal
Analog output signal
Selectable: Current / voltage
Starting point 0 / 20 %
(0) 4 – 20 mA, load 500
(0) 2 - 10 V; load 50 k
proportional, overload and short-circuit protected
Serial Interface
Transceiver RS 485 / 19200 Baud (9600 for Mod-Bus)
Physical Characteristics
Enclosure Plastic Type A* Polycarbonate
Flammability UL 94 V2
Enclosure color* RAL 7032 (light grey)
Dimensions (W x H x D) 94 x 130 x 57 mm (3.7 x 5.12 x 2.24 inch.)
Weight Approx. 0.5 kg (1.1 Ibs.)
Protection class IP 65
Installation Wall mounting
Cable entry Standard 1 x M 20
Wire connection Screw type terminal, min. 0.25 mm2
(24 AWG)
max. 2.5 mm2
(14 AWG)
Wire distance Current signal ca. 500 m (1500 ft.)
Voltage signal ca. 200 m (600 ft.)
Guidelines EMC Directives 2004/108/EC
EN 61010-1:2010
ANSI/UL 61010-1
CAN/CSA-C22.2 No. 61010-1
CE
Warranty 1 year on material (without sensor)
Sensor Performance
Gas type Combustible gases/ vapours (see order inform.)
Sensor element Ex sensor, catalytic bead (pellistor)
Measuring range 0 - 100% LEL
Accuracy ± 1 % of reading
Long-term zero point drift < ± 6 % measuring range /year
Long-term sensitivity drift < ± 1.5 % measuring range / month
Response time t50 3 s; t90 10 s /methane
Sensor life expectancy 3 years/normal operating environment
Temperature range - 20 °C to + 50 °C (-4 °F to 122 °F) w/o heating
Temperature drift 1%
Humidity range 5 – 95 % RH non-condensing
Pressure range Atmospheric ± 20 %
Storage temperature 5 °C to 30 °C (41 °F to 86 °F)
Storage period Max. 6 months
Mounting height Depending on gas type
Electrical
Power supply 16 - 28 VDC/AC, reverse polarity protected
Power consumption (without options) 35 mA, max. (0.85 VA)
Output Signal
Analog output signal
Selectable: Current / voltage
Starting point 0 / 20 %
(0) 4 – 20 mA, load 500
(0) 2 - 10 V; load 50 k
proportional, overload and short-circuit protected
Serial Interface
Transceiver RS 485 / 19200 Baud (9600 for Mod-Bus)
Physical Characteristics
Enclosure Plastic Type A* Polycarbonate
Flammability UL 94 V2
Enclosure color* RAL 7032 (light grey)
Dimensions (W x H x D) 94 x 130 x 57 mm (3.7 x 5.12 x 2.24 inch.)
Weight Approx. 0.5 kg (1.1 Ibs.)
Protection class IP 65
Installation Wall mounting
Cable entry Standard 1 x M 20
Wire connection Screw type terminal, min. 0.25 mm2
(24 AWG)
max. 2.5 mm2
(14 AWG)
Wire distance Current signal ca. 500 m (1500 ft.)
Voltage signal ca. 200 m (600 ft.)
Guidelines EMC Directives 2004/108/EC
EN 61010-1:2010
ANSI/UL 61010-1
CAN/CSA-C22.2 No. 61010-1
CE
Warranty 1 year on material (without sensor)

http://www.msr-electronic.de/fileadmin/Media_Electronic/Downloads/2008/PDF_Englisch/Analog_System/Sensors/ATX3_Serie/DBADT233400_E.pdf