MO297 by Extech - Pinless Moisture Psychrometer
MO297 by Extech - Pinless Moisture Psychrometer
Note: This unit is calibrated every 2 years. NIST calibration is valid for 1 year. Contact RAECO Rents to confirm availability if required.
The Extech MO297 is an all-in-one moisture psychrometer for building inspections, water damage restoration, mold prevention, and HVAC diagnostics. Its pinless sensor detects moisture up to 0.75" (19 mm) below the surface without damage, while the pin probe measures 6–99% moisture in wood and 13–99% in building materials. Additional measurements include relative humidity (0–100%, ±2.5–3%), air temperature (-20 to 170°F), and infrared temperature (-4 to 392°F) with an 8:1 distance-to-spot ratio. The dual display simultaneously shows moisture alongside dew point, vapor pressure, or grains per pound. Features 20-reading internal memory, programmable high/low alarms, and condensation risk alerts.
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Rent for flexible short-term use or purchase to own
Exposure Hazards This Equipment Detects
Humidity (% RH)
Temperature (°C / °F)
Features & Capabilities
| Calibration Certificate Available: | ✓ Yes |
| Datalogging: | ✓ Yes |
| Monitoring Scope: | Area Monitoring |
Equipment Specifications
| Pin Moisture Range: | 6-99% (wood), ±5%; 13-99% (building materials), ±5% |
| Pinless Moisture Range: | 0-99.9% (relative scale only) |
| Pinless Depth: | Up to 0.75 in. (19 mm) |
| Relative Humidity Range: | 0-100%, ±2.5% to ±3% |
| Temperature Range: | -20 to 170°F (-29 to 77°C), ±3.6°F |
| Infrared Surface Temp Range: | -4 to 392°F (-20 to 200°C), 8:1 distance-to-spot ratio, 0.95 fixed emissivity |
| Derived Measurements: | Dew Point, Vapor Pressure, Grains Per Pound (Mixing Ratio) |
| Data Storage Capacity: | 20 readings (internal memory) |
| Battery Life: | 24-32 hours (9V alkaline battery) |
| Probe/Accessory Options: | Remote pin-type probe (MO290-P) with 3-foot cable for contact moisture readings |
| Alarm Features: | Programmable high/low moisture and humidity alarms |
| Indicator Type: | Dual numeric display (simultaneous moisture + dew point/vapor pressure/grains per pound) |
Kit Contents
Manufacturer Resources
Documents
User manuals, safety guides, and technical documentation from the manufacturer:
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