General MMD5NP Bedienungsanleitung

Plea e read thi manual carefully and thoroughly before u ing thi product.

PINLESS

LCD MOISTURE METER

USER’S MANUAL

MMD5NP

TABLE F C NTENTS

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . 2 –4

Key Fe tures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Wh t’s in the Blister P ck . . . . . . . . . . . . . . . . . . 4

Product Overview . . . . . . . . . . . . . . . . . . . . . . . . . 5

Setup Instructions . . . . . . . . . . . . . . . . . . . . . . . . 6

Inst ll B ttery . . . . . . . . . . . . . . . . . . . . . . . . . 6

Oper ting Instructions . . . . . . . . . . . . . . . . . . 6 –7

Specific tions . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

W rr nty Inform tion . . . . . . . . . . . . . . . . . . . . . . 9

Return for Rep ir Policy . . . . . . . . . . . . . . . . . . . 10

INTR DUCTI N

Thank you for purchasing eneral Tools & Instruments’

MMD5NP Pinless LCD Moisture Meter. Please read this user’s

manual carefully and thoroughly before using the meter.

The MMD5NP is a non-invasive (pinless) instrument that can

detect moisture up to 3/4 in. (20mm) below the surface of

wood or building material (bricks, wallboard, etc.). The meter

infers the level of moisture from the material’s capacitance,

which the meter reads by measuring its effect on an electric

field it generates every time it is powered on.

The meter exploits two physical phenomena to make its

measurements:

1. The linear relationship between a solid material’s moisture

level and its dielectric constant—and therefore its

capacitance.

2. The so-called fringe-field effect—the slight spreading of the

electric field produced by current flow between two electrodes

when both electrodes are on the same side of a material.

Behind the back cover of the MMD5NP are two metal plates.

When the meter is powered on, the plates are given small and

opposite charges. The potential difference causes current to

flow, creating a three-dimensional electric field.

When the back of the meter is placed against one side of a

material with moisture on or slightly below its surface, the

increased capacitance of the material distorts the electric

field to an extent that can be sensed (as a change in flux over

the sensing area) and measured. Displayed readings reflect

the average moisture level of the material between its surface

and the electric field’s maximum penetration of 3/4 in.

Moisture closer to the surface has a greater effect on the

reading than moisture at the maximum penetration depth.

The MMD5NP has been calibrated at the factory for use with

wood and building material. Because the capacitance of wood

and the capacitance of building material are affected

differently by moisture, the meter measures their moisture

content on different scales.

A button on the front of the MMD5NP provides a convenient

way to switch between the two materials. Display icons

indicate which material is being tested, as well as whether

the current reading is considered low, medium or high for the

material. Any reading can be held by pushing another front-

panel button; this feature makes it possible to make a

measurement in a dark place and display it after bringing the

meter into a lighted area. The meter also is equipped with a

buzzer whose tone rises with increasing wetness; this feature

makes it easy to detect areas of peak moisture.

Although the LCD displays measurements of a building

material's moisture content as %WME readings, these are

actually relative readings with no accuracy specification.

Despite that shortcoming, relative readings are useful for

quickly comparing the moisture levels of materials, or the

wetness of different areas of the same material. For example,

you can use the meter to locate the source of a water leak

above a ceiling by comparing readings at various points on it.

If the ceiling is level, the point that produces the highest

reading is below the source of the leak.

The MMD5NP is powered by a 9V battery included in the

blister pack.

KEY FEATURES

• Non-invasive/non-destructive measurement technique

• Jumbo display • Wide measurement range

• Intuitive display icons: Low/medium/high moisture content;

wood/building material mode

• Measurement hold function • Audible peak reading alert

• Auto-calibrating • Auto power off

• Low and very low battery warnings

WHAT’S IN THE BLISTER PACK

The MMD5NP comes in a plastic blister pack along with a 9V

battery and this user’s manual.

PR DUCT VERVIEW

The figure below shows all of the controls and indicators on

the front of the MMD5NP, as well as the locations of the

sensing area and battery compartment on its back.

A. LCD display

B. Moisture level icons:

Low; Medium; High

C. Wood

D. Building material

E. Buzzer enabled icon

F. Dual-function button:

1. Power ON/OFF

(press and hold)

2. Wood/Building material

(press briefly)

G. Battery charge gauge

H. Measurement hold icon

I. Dual-function button:

1. Buzzer enable/disable

(press and hold)

2. Measurement hold

(press briefly)

J. Sensing area

K. Battery compartment - 1 “9V”

battery

SETUP INSTRUCTI NS

INSTALL BATTERY

To open the battery compartment, turn the meter over and lift

the tab on the bottom of the battery compartment cover.

Remove the cover and set it aside. Then plug the included

9V battery into the wired socket inside the compartment. The

terminals of the battery and the socket mate in only one way,

with the smaller male terminal plugging into the larger female

terminal. Close the battery compartment by replacing its

cover and snapping it shut.

PERATING INSTRUCTI NS

To power on the meter, press the button and hold it for at

least three seconds. (To power off the meter, follow the same

instruction.)

To measure the moisture level of wood or building material,

first make sure that the correct icon appears on the left side

of the display. If it does not, press the button briefly to

toggle between wood and building material. Then scan the

material by gently pressing the square sensing area on the

upper back of the meter against it. The display will instantly

your material’s moisture content.

Each measurement is also accompanied by a display of one,

two or three droplet icons ( ) at its left, indicating whether

the reading is low, medium or high for the material. The

moisture-level range for each category is different for wood

and building material; see the Specifications section for the

exact percentages.

Some measurement tips:

1. For maximum accuracy, press the sensing area against a

flat area of the material.

2. The material must be at least 3/4 in. thick; this is the

meter’s maximum measurement depth and the thickness

it is calibrated for. If your sample is too thin, the meter

will measure material beneath it as well and produce an

inaccurate reading. One way to compensate for thin

samples is to stack them.

3. The sample’s length and width should be at least as

large as the dimensions of the sensing area: 1.6 x 1.6 in.

(40 x 40mm).

4. Measurements of wood are skewed by two variables:

ambient humidity and the density of the wood species.

The best way to compensate for the effect of these

variables is to develop your own moisture level curves,

based on your experience working with different species

of wood on a day-to-day basis.

To hold me surement, press the button briefly. The

display will show the held value, along with a icon at

upper right.

To sc n wood or building m teri l for n re of pe k

moisture, first make sure that the buzzer is enabled

(indicated by a icon at lower left). If the icon is absent,

press the button and hold it for at least three seconds.

Then scan the material while paying attention to the buzzer’s

tone. A rising tone indicates increasing moisture. When the

tone is highest, the meter is over the area of highest

moisture.

SPECIFICATI NS

Measurement Range 0 to 99.9% WME (Wood Moisture

Equivalent) for wood; 0 to 56.5%

for building material

Measurement Accuracy ±3%

Measurement Resolution 0.1%

Measurement Depth 3/4 in. (20mm)

Display Type/Size 99.9 count LCD with 0.4 in.

(10mm) high digits

Droplet Icon Ranges Low/Medium/High moisture:

>0.1%/30%/70% for wood;

>0.1%/14%/42% for building

material

Sensing Area 1.6 x 1.6 in. (40 x 40mm)

Auto Power Off After 3 to 4 minutes with 0%

reading

Low/Very Low Battery

Warning Levels <7.5V/<6.5V

Operating Temperature 32° to 122°F (0° to 50C)

@<80%RH

Dimensions 5.75 x 2.6 x 0.87 in.

(146 x 66 x 22mm)

Weight 5.1 oz. (145g) with battery

Current Consumption <20mADC

Power Source 9V battery (included)

WARRANTY INF RMATI N

eneral Tools & Instruments’ ( eneral’s) MMD5NP Pinless

LCD Moisture Meter is warranted to the original purchaser to

be free from defects in material and workmanship for a

period of one year. Subject to certain restrictions, eneral will

repair or replace this instrument if, after examination, the

company determines it to be defective in material or

workmanship. The warranty period begins on the date of

purchase. You are encouraged to register your product online.

eneral will extend your warranty an additional 60 days if you

This warranty does not apply to damages that eneral

determines to be from an attempted repair by non-authorized

personnel or misuse, alterations, normal wear and tear, or

accidental damage. The defective unit must be returned to

eneral Tools & Instruments or to a eneral-authorized

service center, freight prepaid and insured.

Acceptance of the exclusive repair and replacement remedies

described herein is a condition of the contract for purchase

of this product. In no event shall eneral be liable for any

incidental, special, consequential or punitive damages, or for

any cost, attorneys’ fees, expenses, or losses alleged to be a

consequence of any damage due to failure of, or defect in any

product including, but not limited to, any claims for loss of

profits.

receive a 60-day extension to your warranty.

RETURN F R REPAIR P LICY

Every effort has been made to provide you with a reliable

product of superior quality. However, in the event your

instrument requires repair, please contact our Customer

Service to obtain an R A (Return oods Authorization)

number before forwarding the unit via prepaid freight to

the attention of our Service Center at this address:

eneral Tools & Instruments

80 White Street

New York, NY 10013

212-431-6100

Remember to include a copy of your proof of purchase, your

return address, and your phone number and/or e-mail

address.

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