"Midas" O2 Detection for MRI Rooms
MIDAS is a gas monitoring system for fast and reliable response to oxygen depletion in MRI operation rooms..

MIDAS is a gas monitoring system for fast and reliable response to oxygen depletion in MRI operation rooms. MIDAS offers lower cost of ownership benefits for gas detection through a combination of extended sensor calibration periods,flexible communications architecture, and patented diagnostics that monitor sensor performance and flow control. If helium, an oderless, colorless, nonflammable gas is leaked, it can cause rapid suffocation when concentrations are high enough to reduced oxygen concentration levels below 19.5%.

•Oxygen (O2): range 0.2-25% v/v
• Smart sensor cartridge with on board ‘e-calibration’ certificate
• 3 built in relays (Form C) for Alarm 1, 2 and Fault
• Power over Ethernet (PoE) communication and power platform
• Keypad Interface and remote Web Browser Interface
• Pyrolyzer and Analog Input modules that connect to any transmitter
• Password protected menu levels to preserve system integrity
• Bright LEDs and intuitive Icon Driven, large backlit LCD display
• Factory-calibrated sensors to reduce need for frequent gas testing
• Isolated 0-22 mA Analog Output with fault and event reporting
• Modbus/TCP Ethernet for easy connectivity to all control and alarm systems ports for control connectivity and service interaction
• Robust extractive pump system (2 year lifetime) sampling up to 30m
• Interactive Training Simulator tool
• CE marked for total immunity to Radio
Frequency Interference
• Reflex® sensor health check for improved safety
• TempraSureTM temperature compensation technology as appropriate
• Event logging to review sensor history
• Patented reporting technology confirms
likely gas release to avoid nuisance alarms
MRI oxygen depletions

MIDAS is very compact in size and it’s easy access metal chassis design makes it simple to install in crowded, increasingly complex process environments or retro fit applications where space is at a premium. MIDAS has flexible power and communications built in as standard including 3 on-board relays, 0 - 22mA analog output, Modbus/ TCP Ethernet digital outputs, as well as the innovative Power over Ethernet (PoE) protocol - a single Ethernet connection for all power, control and communication requirements. Cost effective integration with PLC and FieldBus systems is greatly simplified with the MIDAS architecture.

MIDAS will monitor points up to 30m (100 feet) away from the transmitter and flow rates are regulated automatically using patented control technology to ensure error free gas sensing operation. Honeywell Analytics designs and manufactures its own sensors using advanced robotics to ensure unbeatable quality and reliability.

For an MRI room, the sensor must be located outside to exclude any metals from the environment. A sampling pump runs between the MRI and the sensor location to allow for remote detection.

Transmitter Dimension Size: (unit with Sensor) 120mm (H) x 63mm (W) x 150mm (D) Weight: (unit with Sensor) 0.8Kg
Pyrolyzer / Analog Module Dimensions (Options) Size: 70mm (H) x 63mm (W) x 83mm (D) Weight: 0.41 Kg
Power Requirements Operating Voltage: 24V DC Nominal +/- 10% Operating Voltage with Power over Ethernet (PoE):
36 - 57 VDC via PoE, 48V DC Nominal
Power Consumption Transmitter Unit: ~ 5.0 W With Pyrolyzer (Option):
< 12.95 W
Outputs Visual: Alarm, Power and Fault lights as well as back lit LCD
display with all gas readings and events
Relays: 3 relays for Alarm1, Alarm 2 and Fault rated 1.0A
@ 30VDC or 0.5A @125VAC;
configurable NO or NC, latched or unlatched
Analog: 2 wire isolated, 0 - 22mA, Sink or Source Digital Communications: Modbus / TCP Ethernet / Power over Ethernet (PoE)
Service Port RS232C / PPP protocol
Sampling Distance Tubing Length: Up to 30m (100 feet) with FEP tubing dependant
on gas
Ambient Point Monitoring: In line air filter recommended
  Exhaust Length Up to 30m (100 feet)
Tubing Requirement Sample: 6.35mm OD (1/4”) x 3.18mm (1/8”), FEP, 30m (100 feet) maximum dependant on gas type Exhaust: 6.35mm (1/4”) OD x 4.76mm (3/16”), FEP, 30m (100 feet)
Operating Temperature 0˚ C (32˚ F) to 40˚ C (104˚ F)
Wiring Requirement 4-20mA/DC Power/Relays: 14 AWG Maximum Digital: CAT 5 cable or equivalent, RJ45 connector
Gas Concentration Display & Interface Instrument: 4-digit alphanumeric display with separate measurement units, flow rate bar graph and other icon driven indicators. 4 button membrane keypad Remote Interface: PC / PDA Internet Browser access via Ethernet or other Bus system
Response Times Flow Rate: 500 mL/min Transport Time: 2 - 30 seconds maximum
Warranty Transmitter Unit: 1 year
Sensor Cartridge: 1 year standard; 2 year with extended warranty program
Expected Lifetime of Pump: > 2 years
Certification & Specification European: CE marked; meets EN 50270:1999 (Type2)
and EN 55011:2000
Environmental: ETL approved UL 61010B and CSA-C22.2
No. 1010.1-92
Performance: Designed to meet with UL 2075 (pending 2004)
Electrical: IEEE 802.3af-2003
Performance LDL < LAL
LAL = ½TLV (typically 12% FSD)
FSD = 4 x TLV

MIDAS-K-O2X MIDAS O2X (O2) Cartridge and Transmitter Kit
• Oxygen (O2): 0.2-25% v/v
MIDAS-A-032 Vertical mounting bracket kit $133.00
1283k1090 Duct adapter for 1/4" O.D tubing for 4-16" rount ducts $56.00
0235-0095 Union fitting 1/4" tube, polypropylene $9.00