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Michell Instruments
Michell Instruments MDM300 Advanced Dew-Point Hygrometer
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MDM300: ceramic moisture sensor; ±1 °Cdp (−60…+20); portable. RFQ.
Download datasheet PDF
RFQ cart holds BOM lines only. Submit for engineering quote.
Key parameters
Accuracy
±1 °Cdp (−60…+20 °Cdp); ±2 °Cdp (−100…−60 °Cdp); ±0.2 °C temperature
Protection
IP66 / NEMA 4
Measurement Technology
Michell ceramic metal-oxide moisture sensor
Calibrated Range Spot
−70…+20 °C dew point
Calibrated Range Online
−100…−70 °C dew point
Typical Response
T95 ≤15 min to −60 °Cdp (MDM300); ≤30 min (I.S.)
Fits portable and spot dew-point checks where you need a Michell MDM300—ceramic metal-oxide moisture hygrometer with ±1 °Cdp accuracy from −60 to +20 °Cdp (±2 °Cdp from −100 to −60 °Cdp) and calibrated spot range about −70 to +20 °C dew point.
Key advantages
- Sensor — Michell ceramic metal-oxide
- Accuracy — ±1 °Cdp (−60…+20); ±2 °Cdp (−100…−60)
- Cal ranges — Spot −70…+20 °Cdp; online −100…−70 °Cdp class
- Response — T95 ≤15 min to −60 °Cdp (MDM300); ≤30 min (I.S.)
- Temp — ±0.2 °C temperature
Typical applications
- Compressed air dew-point spot checks.
- Gas dryer verification.
- Portable moisture surveys.
Selection guide
- Standard vs I.S.
- Sample system
- Online vs spot use
Common mistakes
- Wetting sensor then expecting fast dry-down.
- Wrong pressure compensation.
- Ignoring T95 response times.
When to RFQ / what to tell us
- IS option, accessories.
- Quantity, ship-to.
Request a Quote · Get selection help
Specs
| Spec | Value |
|---|---|
| SKU | 40206 |
| Brand | Michell Instruments |
| Model | MDM300 |
| Product type | Dew Point Hygrometer |
| Measurement technology | Michell ceramic metal-oxide moisture sensor |
| Accuracy | ±1 °Cdp (−60…+20 °Cdp); ±2 °Cdp (−100…−60 °Cdp); ±0.2 °C temperature |
| Calibrated range spot | −70…+20 °C dew point |
| Calibrated range online | −100…−70 °C dew point |
| Typical response | T95 ≤15 min to −60 °Cdp (MDM300); ≤30 min (I.S.) |
Documents
FAQ
Q: Accuracy mid-range? A: ±1 °Cdp from −60 to +20 °Cdp.
Q: Sensor? A: Michell ceramic metal-oxide.
Q: What should I send for a quote? A: Options/quantity, ship-to.
Links
| Parameter | Value |
|---|---|
| Accuracy | ±1 °Cdp (−60…+20 °Cdp); ±2 °Cdp (−100…−60 °Cdp); ±0.2 °C temperature |
| Protection | IP66 / NEMA 4 |
| Measurement Technology | Michell ceramic metal-oxide moisture sensor |
| Calibrated Range Spot | −70…+20 °C dew point |
| Calibrated Range Online | −100…−70 °C dew point |
| Typical Response | T95 ≤15 min to −60 °Cdp (MDM300); ≤30 min (I.S.) |
| Operating Pressure | 350 barg (5076 psig) max |
| Battery Life | Up to 48 h typical (MDM300); 24 h (I.S.) |
| Gas Connections | 1/8" NPT female |
| Flow Across Sensor | 0.2…1.2 Nl/min (MDM300); 0.2…0.5 Nl/min (I.S.) |
| Dimensions | 218 × 170 × 90 mm (d × w × h) |
| Weight | 1.35 kg (MDM300); 1.5 kg (I.S.) |
| Certifications | ATEX/IECEx/UKCA/cQPSus/EAC Ex (I.S.); CE/UKCA |
| Data Logging | 8 MB; 5…60 s interval; up to 10,000 logs/file |