FLIR MR77 - an ortaneous humidity psychometer with an infrared thermometer and Bluetooth Meterlink®

FLIR MR77

This pinless moisture meter features a built-in infrared thermometer (FLIR's patented feature) and a 20-item memory. It allows you to monitor moisture content in wood and other building materials without damaging their surface using a pinless moisture sensor (the kit includes a pin-type probe), measure humidity and temperature using the built-in probe, and measure non-contact temperature using infrared radiation. Advanced functions include calculating moisture content, dew point, and vapor pressure.
The meter is fully tested and calibrated.
With proper use, it will operate reliably for many years.

Meter Description

1. Infrared sensor
2. Laser pointer diode
3. Humidity sensor and thermometer
NOTE
The humidity sensor is shipped without connection to the meter, in a sealed protective packaging. If you connect a sensor to the meter and the meter is not in use, place the protective cover over the sensor.
4. LCD display
5. Function buttons
6. External probe socket (RJ45).

Technical specifications

Automatic Power Off (APO)	After 30 minutes (nominal) of inactivity, with prior audible warning; resets by pressing the power button; can be disabled
APO Quiescent Current	Max. 50 µA
Operating temperature	0 to 50℃ (32 to 122℉)
Storage temperature	From -10 to 60℃
Operating humidity	• 90%, 0 to 30℃ • 75%, 30 to 40℃ • 45%, 40 to 50℃
Storage humidity	Maximum 90%
Dimensions (without sensor)	139 mm × 72 mm × 42 mm
Weight	0.29 kg, with battery
Bluetooth range	Maximum 10 m
Certificates	FCC Class B

Meter parameters Humidity

Function	Range	Accuracy (reading)
Relative humidity measurement: 20 to 30℃	0–10%	± 3%
	10-90%	± 2.5%
	90-99%	± 3%

Humidity data

Function	Range	Accuracy (reading)
Humidity with cable	0–99% WME	± 5%
Humidity range without cable	0-99.9	Relative Measurement

Thermal Measurement Ranges

Function	Infrared Range	Accuracy ( of reading)
Infrared measurement temperature (ratio 8:1)	-20 to 0℃ (-4 to 32℉)	± 5℃
	1 to 200℃ (33 to 392℉)	Greater of: ±3.5% or ±5℃ (±9℉)
Infrared Emissivity	0.95 (constant)
Sensor Temperature	–28 to 77℃	±2℃ (3.6℉)

Vapor Pressure Measurement Ranges

Function	Range	Accuracy (reading)
Vapor pressure measurement -1 to 60℃ (30 to 140℉)	0.0–20.0 kPa	Greater of: ±2.0% or 0.2 kPa

Dew point temperature data

Function	Range	Accuracy (reading)
Dew point temperature range	-30 to 100℃	Calculated based on relative humidity and air temperature measurements

Mixing degree data

Function	Range	Accuracy (reading)
Mixing Degree Range	0-999 GPP (0 to 160 g/kg)	Calculated based on relative humidity and air temperature measurements

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