Supported Applications
The Omega HHMM257 Pinless Moisture Meter is a non-invasive moisture sensor designed for wood and other building materials. Utilizing high-frequency sensing technology, the device measures moisture content without penetrating the surface.
Operating Conditions & Performance
The meter provides measurements across a range of 0.0 to 100.0 percent moisture. It senses moisture to a depth of 0.79 to 1.57" (20 to 40mm). The device is shipped fully tested and calibrated; however, the manufacturer notes that calibration must be performed before first use and whenever moved to a new measurement area.
Operational constraints include specific handling requirements: the position of the hand can greatly affect a reading, so users should not move or reposition their hands while taking measurements or calibrating. The calibration reading must not exceed 0.5; if it does, recalibration is required ensuring hands or other objects are kept clear.
Configuration Options
The HHMM257 series features a single power button and an LCD display with MAX/MIN tracking capabilities. The meter includes user-programmable alarms for DRY, RISK, and WET conditions to alert the operator of moisture levels.
• Display Features: Main LCD display showing measurement values, Low Battery icon, HOLD function indicator, Measurement alert icons, MAX mode icon, MIN mode icon, and separate indicators for MAX reading and MIN reading.
• User Interface Controls: Power ON-OFF button (single), Measure (MEAS) button, UP and BACKLIGHT button, SET button, and DOWN button.
• Power Supply: Three (3) 'AAA' 1.5V batteries.
The device provides audible feedback based on moisture thresholds: the meter will beep once every two seconds if moisture is higher than the RISK setting, and four times per second if higher than the WET setting.
Key Product Differences
This series consists of a single model configuration identified as HHMM257. The unit carries CE approval and ISO 9001 Certification (Stamford, CT and Manchester, UK). Manufacturing origin is listed as Made in China.
| Additional Features 1 | Low Battery Indication, Auto Power Off, 2 Alarm Points |
| Auto Power Off | 30 min |
| Diameter | 28 mm |
| Display Note | Display Icons : HOLD, DRY, RISK, WET, MIN, MAX and low battery icon |
| Display Type Note | Three numeric displays; each displaying from 0.0 to 100.0 |
| Height | 235 mm |
| Measurement Depth | 20 to 40 mm (0.79 to 1.6") |
| Measurement Type | Moisture |
| Moisture Measurement | 0.0 to 100.0 |
| Series ID | HHMM257-Meter |
| Supply Power Note | Three 1.5V “AAA” batteries (included) |
| Supply Power Type | Battery |
| Supply Voltage | 1.5 Vdc |
| Temperature Resolution | 0.1 °C |
| Weight | 218 g |
| Width | 63 mm |