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17

6-7.Spare needle, Conductive rubber Replacement

To replace needles in the needle probe or to install a conductive 
rubber piece, use the included wrench, and replace them by 
loosening the mounting screw. When installing a sensor needle, 
orient the concave part of the needle so that it comes in contact 
with the head of the screw as shown in the diagram.

•  For thin sheets such as veneer, laminate, etc., or for cases such as 

product inspections in which you do not want to scratch the surface, 
use a “conductive rubber” to make measurements.

Sensor needle 

(spare needle)

Conductive rubber

Mounting screw
Wrench

Sensor needle

Mounting screw
Concave part

Summary of Contents for MT-730

Page 1: ...Operating Manual Thank you for purchasing this product Please read the operating manual carefully and use this product properly Wood Moisture Tester MT 730 ...

Page 2: ...rly Please observe the safety precautions Please read the precautions noted in the operating manual Do not use if broken If the tester breaks or malfunctions please consult our repair service Meaning of warning symbols In order to prevent damage resulting from erroneously operating the equipment the following symbols are indicated in the operating manual and on the product The following are their ...

Page 3: ...ons 9 6 1 Before Measurement 9 6 2 Measurement Method 10 6 3 Setting the Measurement Mode 13 6 4 Displaying the Average Value 14 6 5 How to make Bias Adjustment 15 6 6 Setting the Alarm 16 6 7 Spare needle Conductive rubber Replacement 17 7 Error Display 18 8 Wood Group Number Table 20 CONTENTS ...

Page 4: ...emperature of the wood is automatically performed by means of a built in temperature sensor Auto power off When inactive the unit will automatically turn itself off after approximately 5 minutes to avoid draining the battery Alarm setting Set any moisture value and an alarm will sound if the measured moisture value is higher than the set moisture value Bias adjustment The moisture value can be cor...

Page 5: ... 2 Measurement Range 3 6 to 40 hardwood 7 to 40 softwood 4 to 40 when wood groups 1 16 are selected varies with group type 2 Measurement Precision Below 20 0 5 20 and higher 2 0 precision with respect to base resistance Display Digital LCD Resolution 0 1 Operating Temperature Range 0 to 40 C Functions Automatic temperature compensation average value display Upper limit alarm setting 10 to 39 and O...

Page 6: ...houlder strap Wood group number table 1 5 V battery AA 6 Operating manual Needle probe Conductive rubber 2 Spare needle 10 Wrench Connector Display Control Panel Needle Cap Battery cover back Needle probe 3 Part Names Accessories ...

Page 7: ... Measuring times Displays the number of times measured 4 HRD or SFT Displays the wood group selected 5 Alarm set point value Displays the set point value for the alarm for the upper moisture limit that was set 6 Moisture value Displays the measured moisture value 7 Bar graph Displays the measured moisture value by means of a bar graph Displays up to 40 in 2 increments 1 2 3 4 5 6 7 ...

Page 8: ... of wood group number Average value and number input Setting of upper and lower alarm limit Making measurement Continuous measurement For inputting numerical values This unit has no print function Selection of hard wood Selection of soft wood Entering a minus input For inputting numerical values ...

Page 9: ... needle probe connector into the socket on the main unit and fasten and secure the lock ring 3 Remove the cap on the needle probe 4 Prepare the wood sample to be measured Allow the sample to equilibrate to the same temperature as the main unit Errors may occur when there is a large difference in the temperature of the wood and the temperature of the unit To make more accurate measurements allow th...

Page 10: ...mber TIMES and will be displayed The display will indicate HRD for HARD hardwood or SFT for SOFT softwood If the display shows something other than that described above there may be a problem with the unit Refer to p 18 7 Error Display 2 Select the wood group object to be measured A When selecting hardwood softwood Press the key to select hardwood Press the key to select softwood ...

Page 11: ...or wood group number is set it will be maintained in memory unless changed even when the unit s power is off 3 Hold the needle probe firmly and insert the sensor needles completely into the wood such that the probe cord is parallel to the direction of the wood grain Turn the red mark on the metal part of the needle probe in the direction of the grain The tips of the sensor needles are sharp points...

Page 12: ...tent is higher than the measuring range and LO will be displayed if it is lower 5 Remove the needle probe from the wood At this time the moisture value will remain on display To continue to make further measurements start the procedure from Step 3 Hold the needle probe firmly When finished making measurements press the key to turn off the power With its auto power off function the unit will automa...

Page 13: ...cimal point will blink and the moisture value and bar graph will be displayed LO will be displayed and the decimal point will blink when the needle probe is not inserted into the wood or if the wood moisture value is below the measuring range 2 Canceling the continuous measurement mode Press the continuously for at least 2 seconds until a beep sounds The display will momentarily go blank When you ...

Page 14: ...time the AVE average value and measurement number remain displayed but if you proceed to make a measurement the measurement number resets to 1 If the number of measurements exceeds 9 the measured value up to that point resets and measurement starts from measurement number 1 The average value cannot be determined when making measurements in continuous measurement mode ...

Page 15: ...adjustment can be made 9 9 to 9 9 for each wood group by the following method 1 Press the or key or the key and select the wood group 2 Press the key The BIAS indicator will blink and the previously entered bias value will be displayed The bias is initially set to 0 0 3 Enter the bias value Enter a 2 digit number To enter 1 2 press the key and the key in succession For a negative value press the k...

Page 16: ...sounds with a beeping tone 1 Press the key The numbers to the right of ALARM will blink 2 Enter the alarm value Enter a 2 digit number To enter 20 press the key and the in succession 3 The set value for the alarm is displayed Then press the key to make measurements To cancel the set value for the alarm enter 0 0 The symbol denotes a blinking display ...

Page 17: ...a sensor needle orient the concave part of the needle so that it comes in contact with the head of the screw as shown in the diagram For thin sheets such as veneer laminate etc or for cases such as product inspections in which you do not want to scratch the surface use a conductive rubber to make measurements Sensor needle spare needle Conductive rubber Mounting screw Wrench Sensor needle Mounting...

Page 18: ...s the following errors will be displayed for 4 seconds and then the power will turn off 1 There is a problem with the temperature sensor Servicing is required 2 There is a problem with the electronic circuit used for moisture measurement Servicing is required 7 Error Display ...

Page 19: ...mperature of the unit up to the operating temperature range 0 to 40 C and make the measurement again 4 The measurement cannot be made because the temperature of the unit is above 50 C Bring the temperature of the unit down to the operating temperature range 0 to 40 C and make the measurement again ...

Page 20: ...irch Paulownia 5 to 40 04 Apitong Keruing Kabul Sengyan 4 to 40 05 Ramin Kempas Chinese quince 6 to 30 06 Japanese ash Elm Ash 4 to 40 07 Teak 6 to 40 08 Lauan Castor aralia 5 to 40 09 Japanese larch 6 to 40 10 Japanese white barked magnolia Cottenwood 6 to 40 11 Hemlock 6 to 40 12 Yeddo spruce Spruce 7 to 40 13 Cypress 5 to 40 14 Douglas fir 6 to 40 15 Cedar 5 to 35 16 Fir 5 to 40 ...

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Page 24: ... displayed on this manual may differ from the actual ones however operations and functions are not affected All efforts have been made to ensure the contents of this manual are accurate However if you notice any part to be unclear incorrect omitted or the like in this manual please contact us Be aware that we are not liable for the effects resulting from opera tions according to this manual regard...

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