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Major tech MT350 - User Manual

Major tech MT350
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INSTRUCTION MANUAL
LOOP IMPEDANCE & PSC TESTER
MT350
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Major tech MT350 Specifications

General IconGeneral
Diode TestYes
Continuity BuzzerYes
Data HoldYes
Power Source9V battery
Operating Temperature0°C to 40°C
Storage Temperature-10°C to 50°C
DisplayLCD
Measurement RangeSee individual parameters
AccuracySee individual parameters
ResolutionDepends on range

Summary

Safety Information

Safety Symbols

Operating Instructions

Voltage Test

Tester displays voltage (P-E) per second. Proceed only if voltage is expected.

Loop Test

Prospective Short Current Test

Features Overview

Lines Test Indicator

3 LED indicators show line status; third LED lights up when reversed.

Overheat Protection

Tester cuts and locks if resistor temperature is high, displays "Temperature is High".

Overload Protection

Tester stops test if P-E voltage exceeds 250V, displays "250V".

Low Battery Indication

Displays flag "i" when battery voltage drops below operating voltage.

Test Mode Operation

Pressing "test" key displays result for 5s, then voltage.

Operating Temperature

0°C to 40°C (32°F to 104°F) and Humidity below 80% RH.

Storage Temperature

-10°C to 60°C (14°F to 140°F) and Humidity below 70% RH.

Power Source and Dimensions

Powered by 6 x AA batteries; dimensions are 200(L) x 92(W) x 50(H) mm.

Weight Specification

Approx 700g including battery.

Electrical Specifications

Loop Resistance Specifications

Specifies ranges, resolutions, test times, and accuracies for loop resistance measurements.

Prospective Short Current Specifications

Specifies ranges, resolutions, test times, and accuracies for PSC measurements.

AC Voltage Measurement (50 Hz)

Specifies the range and accuracy for AC voltage measurements.

Parts and Controls Identification

Digital Display

The main screen for displaying test results and parameters.

Backlight Button

Button to activate the display backlight for low-light conditions.

Line Status Indicators

LED indicators for line status (P-E, P-N, reverse polarity).

Test Button

The primary button to initiate a loop or PSC test.

Rotary Function Switch

Selects the measurement range and mode (e.g., OFF, Loop, PSC).

Power Jack and Pothook

Port for external power and a hook for hanging the meter.

Battery Cover

Cover for accessing the battery compartment.

Loop Impedance and Prospective Short Current Measurement

Battery Replacement Procedure

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