Extech 407777 Operating Manual
User's Guide
Heavy Duty Wood Moisture Meter
Model 407777
Introduction
Congratulations on your purchase of the Extech 407777 Wood Moisture Meter. This meter
measures the moisture content of wood as a percentage. Measurements are made using
the supplied remote intrusive sensor.
service.
Careful use of this meter will provide years of reliable
Warranty
EXTECH INSTRUMENTS CORPORATION warrants this instrument to be free of defects
in parts and workmanship for one year from date of shipment (a six month limited
warranty applies on sensors and cables). If it should become necessary to return the
instrument for service during or beyond the warranty period, contact the Customer
Service Department at (781) 890-7440 ext. 210 for authorization or visit our website at
www.extech.com (click on ‘Contact Extech’ and go to ‘Service Department’ to request an
RA number). A Return Authorization (RA) number must be issued before any product is
returned to Extech. The sender is responsible for shipping charges, freight, insurance
and proper packaging to prevent damage in transit. This warranty does not apply to
defects resulting from action of the user such as misuse, improper wiring, operation
outside of specification, improper maintenance or repair, or unauthorized modification.
Extech specifically disclaims any implied warranties or merchantability or fitness for a
specific purpose and will not be liable for any direct, indirect, incidental or consequential
damages. Extech's total liability is limited to repair or replacement of the product. The
warranty set forth above is inclusive and no other warranty, whether written or oral, is
expressed or implied.
Specifications
General Specifications
Circuit Custom one-chip LSI microprocessor circuit
Display Dual function 2000 count (0 to 1999) LCD display
Measurement Range 9% to 30% Moisture Content
Memory Table 9 memory groups for approx. 150 species of wood
Data Hold Front panel push-button freezes displayed reading
Sample Rate Approx. 0.8 seconds
Sensor Structure Remote two-prong intrusive sensor
Memory Record / Recall Records Maximum/Minimum readings for later recall
Auto Power off Meter automatically shuts off after 10 minutes
Data Output RS-232 PC serial interface for use with Model 407001 data
Operating Temperature 32°F to 122°F (0°C to 50°C)
Operating Humidity 90% Relative Humidity (max.)
Power Supply 9V battery
Power Current Approx. 5.8mA DC
Weight 0.73 lbs (330g) (including batteries & probe)
Size Main instrument: 7.1 x 2.8 x1.3" (180 x 72 x 32 mm)
Accessories Spare pins (10) and protective rubber holster
acquisition software and interface cable kit
Probe: 0.9” (23mm) diameter x 6.54" (23mm) length
Range Specifications
Measurement
Moisture content
Temperature compensation: 32°F to 122°F (0°C to 50°C)
Range Resolution Accuracy
9 to 30% 0.1 % ± (4% + 5d)
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Model 407777 Version 2.2 Jan 04
Meter Description
1. Sensor input: Use caution when inserting the sensor.
2. PC interface jack: For use with Model 407001 software and interface cable kit
3. LCD Display: Displays moisture content, temperature compensation, units of
measure, and function symbols
4. Push-buttons (see below):
• Power: Turn meter on and off
• Hold: Freeze displayed reading
• Material: Select material group 1 through 9 (see Table in the Appendix)
• Record: Track the highest (MAX) and lowest (MIN) readings
• Recall: Review the MAX and MIN readings
• Calibration and ‘+’: Used to calibrate the meter (refer to the calibration section)
• Temperature Adjust: Used for temperature compensation function (refer to
temperature compensation section in this manual)
5. Battery compartment (back): Remove the rubber protective holster to access the
rear battery compartment
6. Protective holster: Rubber jacket insulates meter
7. Sensor pins: Replaceable sensor tips
8. Sensor handle: Hold the sensor by the handle when taking measurements
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Model 407777 Version 2.2 Jan 04
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