2M Technology 2MTHWT-HMD 사용자 설명서 - 페이지 14

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Walkthrough Metal Detector with Single Wrist Thermal Sensor 2MTHWT-HMD

pends on surrounding environment, if there is only small interference, then filtering can be omitted. When more (more

than 4) Walk-through Metal Detector (WTMD)s are working at the same time, there will be certain interference, thus caus-

ing false alarm, so filtering mode is necessary.

4. Set parameter saving or restore to factory settings

"SEL" "Save set parameters" or "restore factory settings" in the interface showing "dOO l"

(see Fig. 38).

0 – Set parameter saving

When the last digit of the lower row is 0, just press "ENT", the set "Frequency" and the parameter determining automatic

frequency setting will be saved in the system, which will be available for the next startup.

1 – Factory setting restoring

When the last digit of the lower row is 1, just press "ENT", all factory settings will be restored and saved by the system.

The main interface will be shown again after the saving (Fig. 1). The number of passed persons and alarms will be reset.

DETECTION ADJUSTMENT

The Walk-through Metal Detector (WTMD) can only meet the highest performance under stable

conditions. Steps for checking the Walk-through Metal Detector (WTMD) for being used under sta-

ble conditions:

1. Check the installation position of the Walk-through Metal Detector (WTMD) for meeting the requirement of

"installation condition".

2. The Walk-through Metal Detector (WTMD) shall not waggle after startup.

3. The alarm is not triggered when the tester without metal articles passes through the WTMD; The alarm is triggered

when the tester with metal articles (e.g. keys) passes through the WTMD.

4. The Walk-through Metal Detector (WTMD) can be considered as being used under stable conditions when meeting the

above items.

II . In order to prevent personal belongs such as rings, keys, buckles, leather shoes with metal

parts etc. from affecting those metal articles required to be detected, the following adjustment

steps shall be conducted:

1. Increase the sensitivity, the alarm shall be triggered when passing the WTMD with those metal article exceptions;

2. Decrease the sensitivity (within an appropriate range), pass the Walk-through Metal Detector (WTMD) again with those

metal article exceptions until the sensitivity is just decreased to the level causing no alarms.

Note: If the sensitivity of one zone is required to be decreased, just adjust the relevant zone; If the sensitivity of the

entire WTMD is required to be decrease, just set "All" as an non-zero value to realize the setting of all 6 zones or set

the "Integral" as 50 times. After the above adjustment, those articles with the sizes being smaller than the sample

will not trigger the alarm, while those with the sizes being bigger than the sample will be detected accurately.

III. Inspection rules of the Walk-through Metal Detector {WTMD)

A warning line being 50 cm away from the front / rear of the Walk-through Metal Detector (WTMD) shall be drawn in

order to make the persons to be inspected pass one by one.

Before the persons to be inspected passes the WTMD, those carried metal articles such as keys, cell phone, iron trade

mark articles, cigarette and coins etc. shall be put at a specified position. The above mentioned articles can be taken

back after the inspection.

3. The persons to be inspected shall walk through the WTMD, normally one by one. Crowdin g, intended rush or ambling