Supported Applications
The Omega HHG191 is a handheld Magnetic Field Meter designed to measure electromagnetic fields (EMF) of extremely low frequency (ELF) ranging from 30 to 300 Hz. The series measures electromagnetic field radiation intensity from various electrical appliances, including power lines, microwave ovens, air conditioners, refrigerators, computer monitors, and audio/video devices.
Operating Conditions & Performance
The HHG191 displays readings in micro-Tesla (µT) or milli-Gauss (mG). The documented measurement ranges include 20 µT, 200 µT, 2000 µT, 20 mG, 200 mG, and 2000 mG. An overload condition is indicated by 'OL' on the left side of the display; users should select a higher range in this instance. A reading lower than 0.5mG may be due to environmental factors rather than a malfunction.
Configuration Options
The HHG191 features an LCD and is powered by battery, with low battery detection indicated by a battery icon on the display. Functional capabilities include:
• Data hold function to permanently lock readings (press HOLD again to unlock).
• Maximum hold function to retain the maximum value encountered.
• Range selection via dedicated button.
• Unit selection between mG and µT.
The device includes a sensor position, power on/off switch, battery cover, and buttons for unit and range selection. The meter is made in Taiwan and carries CE, ISO 9001, and ISO 9002 certifications.
Key Product Differences
The HHG191 series consists of a single handheld model configured with the features described above. No alternative housings, sensor types, or output configurations are documented for this specific series in the provided source material.
| Accuracy | ± 2.5 % |
| Accuracy Detail | ±(2.5% + 6-digit) at 50 Hz/60 Hz |
| Bandwidth | 30 to 300 Hz |
| Battery life | 200 hr |
| Battery Size and Type | Alkaline 9V |
| Display Range | 200/2000 mG, 20/200 µT |
| Display Resolution | 0.1/1 mG or 0.01/0.1 uT |
| Display Type | 3.5 Digit LCD |
| Display Type Note | 3 1 ⁄2 digits LCD, maximum reading 1999 |
| Height | 130 mm |
| Length | 38 mm |
| Number of Batteries | 1 |
| Operating Humidity | 0 to 80% RH |
| Operating Temperature, Max | 50 °C |
| Operating Temperature, Min | 5 °C |
| Series ID | HHG191-Gauss-Meter |
| Weight | 180 g |
| Width | 56 mm |