MIDAS-S-COH | Honeywell Midas® carbon monoxide (low H₂ interference) 0–100 ppm
MIDAS-S-COH is a Honeywell Midas® 1-year S cartridge for carbon monoxide (low H₂ interference) (CO), range 0–100 ppm, electrochemical. It plugs into the MIDAS-T-004 extractive transmitter — not a Sensepoint XCD diffusion head. Sample line up to 30 m FEP at ~500 mL/min.
Mechanical & wiring figures
Part-number decode
| Segment | Meaning | This SKU |
|---|---|---|
| MIDAS | Honeywell Midas® extractive | MIDAS |
| S | 1-year cartridge | S |
| COH | carbon monoxide (low H₂ interference) | COH |
Specifications
| Category | Cartridge · 1-year standard |
|---|---|
| Gas | CO / carbon monoxide (low H₂ interference) |
| Range | 0–100 ppm |
| Principle | electrochemical |
| Flow | approx. 500 mL/min |
| Sample length | 2–30 m FEP |
| Supply | 24 VDC or PoE 48 V |
| Outputs | 0–21 mA + 3 relays + Modbus TCP/PoE |
| Temperature | 0–40 °C (0–30 °C with pyrolyzer) |
| Size / mass | 150×65×153 mm / 0.8 kg |
| Approvals | CE, EN 50270, UL 61010-1, IEEE 802.3af |
Transmitter 150×65×153 mm / 0.8 kg; NF₃ pyrolyzer 70×63×85 mm / 0.41 kg; high-temp PFC pyrolyzer 100×101×140 mm / 1.36 kg.
Why this SKU
Midas is extractive: the cell sits in the tool cabinet while FEP pulls sample from the valve box. carbon monoxide (low H₂ interference) uses electrochemical. Pyrolyzed species need MIDAS-T-00P / T-HTP / T-NP1 or the cartridge will not read.
Mates and spares
MIDAS-S-COH mates to MIDAS-T-004. Pump MIDAS-A-007, internal filter MIDAS-A-009. Same-gas 2-year E cartridge is the long-warranty sibling. Calibration notes live on product-2679.
Typical applications
Gas cabinets, VMBs, wet benches and CVD/etch exhaust. MIDAS-S-COH locks gas and cartridge life; budget transmitter, pump A-007 and internal filter A-009 on the PM cycle.
Compare
| P/N | Type | Gas | Range |
|---|---|---|---|
| MIDAS-E-COH | Cartridge · 2-year extended | CO | 0–100 ppm |
| MIDAS-T-004 | Extractive transmitter | MIDAS-T-004 | — |
| MIDAS-A-009 | Spare part | MIDAS-A-009 | — |
| MIDAS-S-ASH | Cartridge · 1-year standard | AsH₃/GeH₄ | AsH₃ 0–200 ppb / GeH₄ 0–800 ppb |
| MIDAS-S-B2H | Cartridge · 1-year standard | B₂H₆ | 0–400 ppb |
| MIDAS-S-BR2 | Cartridge · 1-year standard | Br₂/ClO₂ | 0–0.4 ppm |
| MIDAS-S-CFX | Cartridge · 1-year standard | PFC | 0–40 ppm |
Install and sample line
Wall-mount MIDAS-T-004 on the pre-drilled chassis or DIN kit A-036, then insert MIDAS-S-COH. Sample 1/8″ID×1/4″OD FEP to 30 m; exhaust 1/4″ID×3/8″OD to 30 m. End-of-line filter 0780248 or 1830-0055/0027 by gas. 24 VDC (−15%/+10%) or PoE 48 V; pyrolyzer load up to 12.95 W. 0–40 °C, 0–30 °C with pyrolyzer.
FAQ
- Can MIDAS-S-COH plug into Sensepoint XCD?
- No. Midas is an extractive cartridge; XCD is a diffusion sensor housing. They do not mate.
- Does MIDAS-S-COH need a pyrolyzer?
- Gases marked ** (CH₂F₂, C₄F₆, C₅F₈, NF₃, CH₃F) need MIDAS-T-00P / T-HTP / T-NP1 plus a ventilated cover.
- How is 4–20 mA landed on MIDAS-S-COH?
- 3-wire sink, 3-wire source or 4-wire isolated 0–21 mA; plus 3 relays and Modbus TCP / PoE. Max 14 AWG.
Documents
Datasheet PDF · Chinese manual · English technical manual · Midas family matrix
Quote and lead time
Stock and lead time are batch-based. If an E cartridge is short, look at the same-gas S cartridge. Pyrolyzed gases need the pyrolyzer ordered with the transmitter.