We briefly mentioned the Flir MR77 moisture meter when the brand, which is well known for their thermal imaging products, entered the test and measurement space in early 2014. Extech, which is owned by Flir, offers digital multimeters and testing products under their own branding.
Flir says that the MR77 is an all-in-one moisture meter that helps you manage your toughest water restoration projects.
The MR77 moisture meter has a pinless sensor and a wired pin probe. It also features an IR thermometer, field-replaceable temperature and humidity sensor, high/low moisture mode, and humidity alarm.
Flir says that this a feature-rich moisture meter, and we can’t help but to agree.
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The MR77 meter has built-in Bluetooth connectivity, allowing it to work with Flir’s mobile software app. In doing so, you can create moisture and environmental graphs for easier and professional-looking reports.
It also features Flir’s MeterLink compatibility, which means you can embed moisture readings into compatible Flir infrared cameras for enhanced reporting.
Features & Specs
- Pinless moisture range 0 to 99.9%
- Pinless moisture max depth 0.75″
- Pin moisture range 0 to 99% WME ± 5%
- Bluetooth connectivity to Flir Tools Mobile app and thermal imagers (32 ft range)
- Pin and Pinless moisture sensors
- Built-in spot IR thermometer (8:1 ratio)
- Built-in hygrometer for relative humidity, dewpoint and air temperature
- Measures Grains per Pound (and GpKG)
- Calculates condensation hazards
- Datalogging (20 internal & unlimited external with app)
- Customizable hi/lo alarms
- 6.5 feet (2 m) drop-tested
If you’re looking for a different kind of moisture meter, one that doesn’t have a temperature and relative humidity sensor, check out the MR160, which we recently posted about. The MR160 is an imaging moisture meter, thanks to its built-in thermal imaging camera. It lacks Bluetooth connectivity and is slightly less expensive than the MR77.
Prior to my research for the MR160 moisture meter post, I had wrongfully assumed that the MR160 was more advanced than the MR77 moisture meter. After looking at both more closely, it turns out that the MR77 and MR160 are completely different animals. The MR160 has a built-in thermal imaging sensor, while the MR77 has an IR thermometer, an air thermometer, and a relative humidity sensor, plus Bluetooth connectivity and logging potential.
Yes, this is a ~$700 moisture meter, but wow does it look great on paper.