Flir
FLIR MR77 Pinless Moisture Psychrometer – 5-in-1 Moisture & Humidity Meter
- SKU:
- MR77
- UPC:
- 793950370773
- Availability:
- Usually ships in 3 business days
Description
The FLIR MR77 Pinless Moisture Psychrometer is a 5-in-1 moisture and environmental meter for building, restoration, and HVAC professionals — moisture, humidity, temperature, and dew point in one rugged handheld.
The MR77 measures pinless moisture to 0.75 in depth, pin moisture with the included wired probe, relative humidity and air temperature with a field-replaceable sensor, surface temperature with its built-in IR thermometer, and calculates dew point and mixing ratio. Bluetooth METERLiNK® sends readings to FLIR thermal cameras and the FLIR Tools app for documented reports.
- 5-in-1 meter: pinless moisture sensor, pin probe, temperature and relative humidity sensor, and an IR thermometer in one tool
- Bluetooth for remote viewing and sharing on a mobile device
- METERLiNK technology wirelessly integrates readings into radiometric IR images on compatible FLIR thermal cameras
- Built-in IR thermometer (-20 to 200°C) with 8:1 distance-to-spot ratio for non-contact temperature checks
- Field-replaceable sensors, including the MR01 temperature/RH sensor
- Double-molded, rubberized case is shock-resistant from drops as high as two meters
- Psychrometric readings including dew point and vapor pressure for moisture remediation and HVAC work
Typical Applications
- Building inspections
- Restoration and remediation
- HVAC diagnostics
- Flooring installation checks
| Model | FLIR MR77 Pinless Moisture Psychrometer |
| IR Temperature | Range -4 to 392°F (-20 to 200°C) / Basic Accuracy ±3.5% |
| IR Distance to Spot Ratio | 8:1 |
| IR Emissivity | 0.95 (fixed) |
| Pin Moisture | Range 0 to 99% WME / Basic Accuracy ±5% |
| Pinless Moisture | Range 0 to 99.9 / Basic Accuracy Relative |
| Pinless Moisture Depth Max | 0.75 inches (19 mm) |
| Sensor Temperature | Range -18 to 170°F (-28 to 77°C) / Basic Accuracy ±3.6°F (2°C) |
| Relative Humidity | Range 0 to 99% RH / Basic Accuracy ±2.5% RH |
| Vapor Pressure | Range 0 to 20.0 kPa / Basic Accuracy ±2% |
| Material Groups | 11 (groups 1–9 specified; 10 and 11 reference only, per user manual) |
| Bluetooth Range Max | 32 ft (10 m) |
| Data Recording | 20 points internal (datasheet) |
| Power | 9 V alkaline |
| Battery Life | ~100 hours with alkaline batteries (backlight and work light off) |
| Auto Power Off | ~30 minutes with disable |
| Weight | 0.29 kg (0.65 lb), including batteries (datasheet) |
| Dimensions | 139 × 72 × 42 mm (5.4 × 2.8 × 1.7 in) (datasheet) |
| Certifications | CE, FCC |
| Drop Test | 6.5 ft (2 m) |
| Included | MR77 meter, MR01 temperature and RH sensor, MR02 wired pin probe, 9 V Energizer battery, user manual (English), CD (translations) — per FLIR MR77 datasheet packaging contents |
Specifications are subject to manufacturer updates. Refer to current FLIR product documentation for complete operating, safety and maintenance requirements.
FLIR Limited Lifetime Warranty
This instrument is covered by FLIR's Limited Lifetime Warranty for test and measurement instruments.
Warranty eligibility, registration requirements, exclusions, and coverage are subject to FLIR's complete warranty terms.