MX 48 8 channel alarm/display unit with fixed or scrolling display, 3 programmable alarm thresholds per channel, fault alarm, analogue and serial outputs.
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 tramsmitters in the OLDHAM range and any detector with a standard 4 - 20 mA output.
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 that it is perfectly adaptable to 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 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
USER - FRIENDLY DISPLAY PANEL
TRIPLE ALARM LEVEL
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
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
GREATER RELIABILITY
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
HIGH SAFETY 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.
Technical Characteristics
Manufacturer
Oldham SA
Link
2 or 3 wires, active, with display according to type of detector
Presentation
Wall mounted box
Resistance
Function
Gas monitor
In Loop Mode
Flammable, 3 wires: 32 ohm
Capacity
Up to 8 channels
4 - 20mA: 2 or 3 wires: 56 ohm
Display
Fluorescent, 2 lines of 16 characters
Average line length (in meters at 20C for a 2.2m2 conductor)
Fixed or scrolling
Flammable: 1000m / 4-20mA: 2000m
Alarms
Signal Output
Analogue 4-20mA per channel, load resistance: 600 ohm max.
Fault Alarm
Yellow LED on each channel
Serial RS485 or 232 in J-BUS format, opto-insulation on option
Action on common relay
Power Supply
109 to 122v AC or 207 to 244v AC
Gas Alarm
3 independent thresholds per channel (red LED's)
21 to 31v DC
3rd threshold time delayed or mean value
Power consumption: 200vA or 150W
Manual or automatic reset
Miscellaneous
Acknowledgement: local or remote
2 relay outputs per channel, common relay on alarm 3
Operating temperature: -20C to +55C
Audio Alarm
80db at 30cm
Relative humidity 5% to 95%, uncondensed
Relay Output
2 gas alarm relays per channel
Compliant with European standards 50054, 50081 50082, AFAQ ISO 9001
1 common failure relay for alarm 3
Protection
IP 65
Programmable positive or negative safety on alarm relay
Weight
11Kg
Positive safety on failure
Dimensions
H 340 x W 500 x D 89mm
Programmable NO or -NC
Measurement Input
Type of Detectors
Flammable bridge type
Flammable transmitter, toxic or oxygen detector (type 4-20mA)
For further information,
technical advice, or a
quotation please call or
email
us. If you are not sure which
product you need one of our
technical sales advisors will be
happy to discuss your
application. We also accept
company purchase orders by fax
or post. Credit card orders can
also be placed over the phone
for any product.
Tel +44 (0)
845 9000 601 Fax +44 (0) 845 9000 602
info@omniinstruments.co.uk
Tel +1-866-849-3441
Fax +1-866-628-8055
info@omniinstruments.net
Tel +61 (0)282 442 363 Fax +61 (0)294 751 278 info@omniinstruments.com.au
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