Amprobe PM55A 사용자 설명서 - 페이지 7

{카테고리_이름} Amprobe PM55A에 대한 사용자 설명서을 온라인으로 검색하거나 PDF를 다운로드하세요. Amprobe PM55A 16 페이지. Automatic precision pocket meter

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AutoTect

Mode

This AutoTect feature automatically selects measurement function of

V dc, V ac, or resistance based on the input via the test leads.

● With no input, the meter displays Auto when it is ready.

● With no voltage signal but a resistance below 6 MΩ is present, the meter displays the resistance

value.

● When a signal above the threshold of 1.2 V dc or 1.5 V ac up to the rated 600 V is present, the

meter displays the appropriate voltage value in dc or ac, whichever larger in peak magnitude. The

H appears indicating ac V. The default of no icon is dc V.

● The AutoTecttest mode input impedance is lower than most digital multimeters and LoZ is

displayed on the LCD. Switch to the manually selected V dc or V ac, if the circuit being tested is

sensitive to the meter input impedance. Input impedance is approximately 900 Ω, helping

determine if voltage is from leakage (so-called "ghost" voltages) or a hard connection. "Ghost"

voltages will be zeroed out by the low input impedance.

● Overload-Alert Feature

When more than 600 V is present, the meter displays OL with a warning beep tone. Disconnect

the test leads from the signal immediately to avoid hazards.

• Range-Lock Feature

When a measurement reading is displayed in the AutoTect mode, press the SELECT button

momentarily to lock the function-range. The LCD annunciator Auto turns off. Range-lock can

speed up repetitive measurements. Press the SELECT button momentarily again to return to

AutoTect mode.

• When making resistance measurements in AutoTect

readings alerts you that the circuit under test is still energized.

Continuity, Audible With Symbolic Display

With Auto on the LCD, press the SELECT button once to select Continuity function. The meter will

show a symbolic open-switch display

closed-switch

indicates a closed circuit. Continuity is used for checking wiring connections and

operation of switches.

Electric Field EF-Detection, VolTect

With Auto displayed on the LCD, press the SELECT button momentarily 2 times to select the EF-

Detection feature. The meter displays EF when it is ready. Signal strength is indicated as a series of

bargraph segments on the display and variable beep tones. See the VolTect specifications later in

this manual for a complete description of the bar graph indicators.

• An antenna is located at the top left corner of the meter, which detects electric field surrounding

current-carrying conductors. It is ideal for tracing live wiring connections, locating wiring

breakage and to distinguish between live or earth connections.



mode, an unexpected display of voltage

when it is ready. A continuous beep tone and a symbolic