MIDAS S2-I-CH2 | Honeywell Midas® difluoromethane (S2 IR) ppm CH₂F₂
MIDAS S2-I-CH2 is a Honeywell Midas® IR cartridge for difluoromethane (S2 IR) (CH₂F₂), range ppm CH₂F₂, Midas S2 IR. 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 |
| CH2 | difluoromethane (S2 IR) | CH2 |
| S2 | Midas S2 IR generation | S2 |
Specifications
| Category | IR cartridge |
|---|---|
| Gas | CH₂F₂ / difluoromethane (S2 IR) |
| Range | ppm CH₂F₂ |
| Principle | Midas S2 IR |
| 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. difluoromethane (S2 IR) uses Midas S2 IR. Pyrolyzed species need MIDAS-T-00P / T-HTP / T-NP1 or the cartridge will not read.
Mates and spares
MIDAS S2-I-CH2 mates to MIDAS-T-004. Pump MIDAS-A-007, internal filter MIDAS-A-009. Do not substitute an electrochemical cartridge for this IR cell. Calibration notes live on product-2679.
Typical applications
Gas cabinets, VMBs, wet benches and CVD/etch exhaust. MIDAS S2-I-CH2 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-T-004 | Extractive transmitter | MIDAS-T-004 | — |
| MIDAS-I-CO2 | IR cartridge | CO₂ | 0–2.0 %vol |
| MIDAS-I-SF6 | IR cartridge | SF₆ | ppm SF₆ |
| MIDAS S2-I-CH3 | IR cartridge | CH₃F | ppm CH₃F |
| MIDAS S2-I-CO2 | IR cartridge | CO₂ | 0–2.0 %vol |
| MIDAS S2-I-SF6 | IR cartridge | SF₆ | ppm SF₆ |
| MIDAS-I-COS | IR cartridge | COS | ppm COS |
Install and sample line
Wall-mount MIDAS-T-004 on the pre-drilled chassis or DIN kit A-036, then insert MIDAS S2-I-CH2. 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 S2-I-CH2 plug into Sensepoint XCD?
- No. Midas is an extractive cartridge; XCD is a diffusion sensor housing. They do not mate.
- Does MIDAS S2-I-CH2 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 S2-I-CH2?
- 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.