Gas monitor Measurement and alarm units 4 gas alarm thresholds MX 48 Up to 8 independent channels Easy operation Programming by keypad or PC Serial/analogue output Compliant with European Standards ATEX Global fire and gas detection solutions Together we’ll make your operations safe The MX 48 is designed to protect your equipment and personnel in environments liable to contain flammable or toxic gases. Equipped with up to 8 independent channels, the MX 48 can be used to control different types of detectors. In fact, this unit is compatible with all the detector-transmitters in the Oldham range and any detector with a standard 4-20 mA output. Exemple d’application : centre de production MX 48 : designed to meet your needs The MX 48 caters for a wide range of possible uses, adapting to your safety requirements. The variety of programming options, by keypad or computer, ensures it meets specific user needs. Furthermore, The MX 48 is open-ended, so that if required, subsequent extensions or modifications can be added. Easy to install and very flexible to use, the MX 48 can handle a large quantity of applications to cater for your technical requirements at lower costs MX 48 : measurement and alarm unit The MX 48 is designed for prevention, action and detection, it : • monitors detectors • displays the nature, concentration, measurement and unit of the gas detected (in cyclic mode) • triggers alarms if the measurement exceeds thresholds • actuates relays for the control of warning devices, valves and mimic panels • indicates faults • transmits data via analogue and serial outputs. Compliant with european standards • European standards EN 50054, 50081, 50082 and low voltage directives. • Enhanced ergonomics and performance. Enhanced ergonomics and performance User-friendly display panel 5 indicator lights per channel : • on/off • AL1 • AL2 • AL3 • Fault Fixed or scrolling LCD display on two lines of 16 characters 4-key keypad Triple alarm level Great reliability • 3 individually adjustable alarm levels • Alarms 1 and 2 instantaneous or governed by control logic of 2-speed ventilation systems • Alarm 3 time-delayed or based on mean calculation • Local or remote acknowledgement, useful in control room • Fault monitoring • Possibility of transmission of audio alarm to the detection site • Testing of indicator lights and integrated display panel • Transmission of measurements, alarms, failures and relay status via RS232 or 485 output for each channel • Relays programmed in positive or negative safety mode • Inhibition of relays in maintenance mode of limited duration and signalled by an indicator light Simple operation • 4-20 mA input so that any type of standard detector can be connected, in addition to Oldham detectors • Common serial output in J-Bus format and analogue outputs per channel • Management of failures and alarms by micro-controller and internal software Safer unit • Efficient protection against radio frequencies and industrial interference, to avoid false alarms in environments subject to electrical interference (EMC compliance) • Integrated protection against human operating errors • Protected access to programming Pre vention of the r isks Technical characteristics • OLDHAM SA Presentation : • Wall mounted Function : • Gas monitor Capacity : • Up to 8 channels Display : • Fluorescent, 2 lines of 16 characters Resistance In loop mode : • 4-20 mA : 2 or 3 wires - 56 Ω • Average line length (in metres at 20°C for a 1,5 mm2 conductor) • Flammable : 1,000 m/ 4-20 mA - 2,000 m • Fixed or scrolling Signal output : ALARMS Fault alarm : • Action on common relay Power supply : • 3 independent thresholds per channel (Red LED’s) • Power consumption : 200 VA or 150 W • Manual or automatic reset • 2 relay outputs per channel common relay on alarm 3 • 80 db at 30 cm Relay output : • 2 gas alarm relays per channel • 109 to 122 V AC or 207 to 277 V AC • 21 to 31 V DC • 3rd threshold time-delayed or mean value Audio Alarm : • Analogue 4-20 mA per channel, load resistance : 600 Ω max. • Serial RS 485 or 232 in J-BUS format, opto-insulation an option • Yellow LED on each channel Gas alarm : • Flammable, 3 wires - 32 Ω Miscellaneous : • Acknowledgement : local or remote • Operating temperature : -20°C to +55°C • Relative humidity 5% to 95%, uncondensed • Compliant with European Standards 50054, 50081 and 50082 • 1 relay common for alarm 3 • Programmable positive or negative safety on alarm relay Protection : • IP 65 • Positive safety on failure Weight : • 11 Kg • Programmable NO or NC Dimensions : • H 340 x W 500 x D 89 mm MEASUREMENT INPUT Type of Detectors : • Flammable Bridge Type Link : 80,5 500 • Flammable transmitter, toxic or oxygen detector, (type 4-20 mA) • 2 or 3 wires, active, with display according to type of detector 340 340 89 MX 48 r a n t W 2 a y years* W e ans* r a n ti r r a n t y i e 2 a r r a nt Plant and head office : Z.I. Est - rue Orfila - B.P. 417 - 62 027 ARRAS Cedex FRANCE Tel. : 33 3 21 60 80 80 Fax : 33 3 21 60 80 00 Web site : http://www.oldhamgas.com Your agent or retailer AMERICAS Tel.: +1 412 788 4353 Fax: +1 412 788 8353 [email protected] AUSTRALIA / NZ Tel.: +61 2 8870 3400 CZECH REPUBLIC Tel.: +420 234 622 222/3 GERMANY Tel.: +49 231 / 9241 0 ITALY Tel.: +39 011 3801371 EXPORT DEPARTMENT : PHONE : 33 3 21 60 80 80 - FAX : 33 3 21 60 80 05 ASIA PACIFIC Tel.: 86 10 8497 3970 Fax: 86 10 8497 3971 [email protected] MIDDLE EAST Tel.: +971 50 455 8518 NETHERLANDS Tel.: +31 76 5427 609 EUROPE Tel.: 33 3 21 60 80 80 Fax: 33 3 21 60 80 00 [email protected] SINGAPORE Tel.: +65 6561 7377 SWITZERLAND Tel.: +41 26 652 51 18 UNITED KINGDOM Tel.: +44 0 1782 562002 This is not a contractually binding document. OLDHAM SA reserves the right to make any changes, without notice, to the technical characteristics of its equipement. Designed and created by Audace 33 3 21 135 600. Edition ref.: MX48GB05 - JANUARY 2007 Manufacturer :
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