Honeywell Midas Toxic Gas Detector
Honeywell Midas is a single-point extractive fixed gas detector for more than 35 toxic, corrosive and flammable gases (NH3, HCl, H2S, SiH4, NF3 and more), used in semiconductor and industrial plants. Pre-calibrated sensor cartridge, 24 VDC or PoE supply, 3 relays, Modbus/TCP and sampling up to 30 m.
- Operating voltage 24 VDC nominal (-15 to +10%, 20.4 to 26.4 VDC); PoE 48 VDC
- Operating temperature 0°C to +40°C (32°F to 104°F); with Pyrolyzer module: 0°C to 30°C
- Humidity 20 – 90% RH
- Operating pressure 90 - 110kPa
- Genuine products
- Full CO/CQ
- VAT invoice
- Quote within 24 working hours
PRODUCT DESCRIPTION
Honeywell Midas Toxic Gas Detector
The MIDAS gas detector uses sensor technology to detect a wide range of toxic and flammable gases present in a plant. It monitors points up to 100 feet (30 meters) away, using patented technology to regulate the flow rate and ensure fault-free gas detection. Built with Honeywell’s advanced robotics, the MIDAS gas detector delivers outstanding quality and reliability.
Gases:
- NH3, AsH3, BCl3, BF3, Br2, CO2, CO, Cl2, ClO2, B2H6, H2SiCl2, CH2F2, Si2H6, F2, GeH4, C4F6, H2, HBr, HCl, HCN, HF, H2S, CH4, CH3F, NO, N2O, NO2, NF3, C5F8, O2, O3, PH3, SiH4, SO2, TEOS, WF6
Specifications
- More than 35 gases available, with a 2-year warranty
- Operating voltage: 24VDC
- Operating voltage with Power over Ethernet (PoE): 48 VDC via PoE
- 3 built-in relays (Form C) for Alarm 1, Alarm 2 and Fault
- Optional Midas Pyrolyzer module connects to any Midas gas detector
- Password-protected menu levels maintain system integrity
- Bright, intuitive LEDs and a large multi-color backlit LCD
- 0-21 mA analog output
- Modbus/TCP Ethernet for easy connection to any control system port and user alarms
- Pump sampling system up to 100 feet
- CE for full immunity to radio frequency interference
- Reflex® sensor health check for improved safety
- TempraSureTM temperature compensation where applicable
- Event logging to review sensor history
- Operating temperature: 0°C to +40°C (32°F to 104°F)
- Humidity: 20 – 90% RH
- Operating pressure: 90 – 110kPa
Applications
According to the manufacturer, Midas suits semiconductor processing, light industrial manufacturing, university laboratories, aerospace and wastewater. It monitors points up to 100 ft (30 m) away using a sampling pump with flow regulation.
Sensors and the Pyrolyzer module
- Plug-and-play smart sensor cartridge, pre-calibrated with an electronic calibration certificate; cartridges are replaced quickly without manual recalibration.
- NF3, CH2F2 (difluoromethane), C4F6 (hexafluorobutadiene), CH3F (methyl fluoride) and C5F8 (octafluorocyclopentene) need the optional Midas Pyrolyzer module, which connects to any Midas detector and runs from the detector’s 24 VDC or PoE supply. The Pyrolyzer heater assembly has a lifespan of more than 2 years.
- Reflex sensor health check and TempraSure temperature compensation improve reliability.
Communication and integration
- 3 built-in Form C relays: Alarm 1, Alarm 2 and Fault.
- Isolated analog output with fault and event reporting; Modbus/TCP Ethernet to control and alarm systems.
- Power over Ethernet (PoE): a single Ethernet cable carries power, control and communication.
- Keypad interface, large multicolour backlit LCD and a remote web browser interface; password-protected menus; event log.
What to send for a quote
- Gas to detect and range; whether it is one that needs the Pyrolyzer.
- Number of sample points and the distance from each point to the detector (up to 30 m).
- Supply: 24 VDC or PoE.
- Signal to the control system: relay, analog or Modbus/TCP.
- Installation environment (temperature, humidity) and quantity.
CAD replies with a quote within 24 working hours of receiving the details.
TECHNICAL SPECIFICATIONS
Specifications of Honeywell Midas Toxic Gas Detector
| PARAMETER | VALUE |
|---|---|
| Model | Midas |
| Operating voltage | 24 VDC nominal (-15 to +10%, 20.4 to 26.4 VDC); PoE 48 VDC |
| Operating temperature | 0°C to +40°C (32°F to 104°F); with Pyrolyzer module: 0°C to 30°C |
| Humidity | 20 – 90% RH |
| Operating pressure | 90 - 110kPa |
| Brand | Honeywell |
| Dimensions | 150 mm (H) x 65 mm (W) x 153 mm (D), with sensor cartridge |
| Weight | 0.8 kg (1.76 lb), with sensor cartridge |
| Relays | 3 relays (Alarm 1, Alarm 2, Fault) 1.0 A @ 30 VDC or 0.5 A @ 125 VAC |
| Analog output | 0 to 21 mA (3-wire sink, 3-wire source or 4-wire isolated) |
| Communication | Modbus/TCP Ethernet, Power over Ethernet (PoE), optional LonWorks interface |
| Sampling distance | Up to 30 m (100 feet) with FEP tubing |
| Certifications | CE; EN 50270:2015; ETL UL61010-1 Ed:3; IEEE 802.3af-2003 |
Specifications may vary with the ordered configuration. Contact a CAD engineer for sizing to your actual operating conditions.
FAQ
Frequently asked questions about CAD-SF-431
Which gases can the Honeywell Midas detect?
More than 35, including NH3, AsH3, BCl3, BF3, Br2, CO2, CO, Cl2, ClO2, B2H6, HCl, HF, H2S, SiH4, SO2, WF6, TEOS, CH4 and H2 (see the full list in the description). Each gas uses its own sensor cartridge.
Which gases need the Pyrolyzer module?
NF3, CH2F2, C4F6, CH3F and C5F8. The Pyrolyzer is optional and connects to any Midas detector.
How far can Midas sample?
Up to 100 ft (30 m) with the built-in sampling pump; the manufacturer quotes a 2-year pump lifetime.
What power and communication does Midas use?
24 VDC or Power over Ethernet; 3 relays (Alarm 1, Alarm 2, Fault), an analog output and Modbus/TCP Ethernet.
What do I need to send for a Midas quote?
Gas and range, number of points, sampling distance, supply type and output signal. CAD replies within 24 working hours.
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