Pro's Kit MT-1505 User manual

MT-1505

Automatic Pocket Meter

User’s Manual

1st Edition,2012

Front panel description

Introduction

This unique meter has a full complement of features in a

compact package only 3/8 inch deep and weighing less than 3

oz. The essential shirt-pocket size meter for portability .Model

MT-1505 is fully auto-ranging and has an oversized,

easy-to-read digital display. It offers the Auto-Select feature

that guides the meter to display AC volts, DC volts or

resistance based on what you are measuring. This meter is

fully rated to CAT III levels. The meter MT-1505 includes

measurement extras such as non-contact voltage detector of

1

2

AC voltages, capacitance, frequency, diode and continuity plus

safety extras such as transient protection to 4 kV and overload

protection to either 600 V.

Safety Information

The MT-1505 Automatic Pocket Meter is certified for

EN61010-1:2001; CAT II 450 V, CAT III 300 V, class 2 and

pollution deg. 2.

This instrument is EN61010-1 certified for Installation

Category II (600V). It may only be used to make

measurements on energy limited circuits within equipment

and not directly connected to mains.

This instrument is EN61010-1 certified for Installation

Category III (300 V). It is recommended for use with local

level power distribution, appliances, portable equipment,

etc., where only smaller transient over-voltages may occur,

and not for primary supply lines, overhead lines and cable

systems.

Do not exceed the maximum overload limits per function

(see specifications), the limits marked on the instrument

itself. Never apply more than 600 between the test lead and

earth ground.

Inspect the DMM, test leads and accessories before every

use. Do not use any damaged part.

Never ground yourself when taking measurements. Do not

touch exposed circuit elements or test probe tips.

Do not operate the instrument in an explosive atmosphere.

Remove test leads from circuit before opening the case.

Always measure current in series with the load – NEVER

ACROSS a voltage source.

3

Turning the Meter On and Off

Press the Power button for approximately 3 seconds to turn

the meter on.

To turn the meter off, press the Power button until the

display goes blank.

Making Measurements

All measurements described in this manual use the Red test

lead for positive (+) polarity and Black test lead for Ground

reference (-) unless otherwise specified

Auto-Select Mode

The Auto-Select 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 40Mis

present, the meter displays the resistance value, this

function is auto-ranging

When a signal above the threshold of 0.6 V dc or 1.6V 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, this function is auto-ranging

The Auto-Select test With High input impedance: 10M

which ensure the Best accuracy.

Overload-Alert Feature

When above rated 600 V is present, the meter displays OL

with a warning beep tone. Disconnect the test leads from the

signal immediately to avoid hazards.

4

Continuity & diode

With Auto on the LCD, switch to Continuity function. The meter

will show a symbol of diode display, then press the power

button momentarily 1 times to enter into continuity function with

a symbol of speaker. A continuous beep tone indicates a

closed circuit.

Continuity is used for checking wiring connections and

operation of switches.

Frequency

With Auto on the LCD, switch to frequency function, the meter

displays Hz when it is ready. This function is auto-ranging.

Capacitance

With Auto on the LCD, switch to capacitance function, the

meter displays nF when it is ready. This function is

auto-ranging.

Electric Field EF-Detection, Non-Contact Voltage

When Auto displayed on the LCD, switch to select the NCV

function. The meter displays EF. Signal strength is indicated as

a series of bar graph segments on the display and variable

beep tones. See the specifications later in this manual for a

complete description of the bar graph indicators.

An antenna is located at the top right 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.

Probe-Contact EF-Detection

For more precise indication of live

wires, such as distinguishing

between live and ground sockets,

use the V ac manual function

selection for direct contact voltage

measurements.

Product Maintenance

Maintenance

Do not attempt to repair this meter. It contains no user

serviceable parts. Repair or servicing should only be

performed by qualified personnel. Cleaning periodically wipe

the case with a damp cloth and mild detergent; do not use

abrasives or solvents. If the meter is not to be used for periods

of longer than 60 days, remove the battery and store it

separately

Troubleshooting

If the instrument fails to operate, check battery, leads, and

replace battery as necessary. Double-check operating

procedure as described earlier in this manual.

5

6

Battery Replacement

If the meter starts up with persistent resetting display or with

low battery icon turns on, replace the battery. The meter uses

one 3 V coin battery IEC-CR2032.

To replace the battery, turn off the meter.

Disconnect the test leads from live circuits.

Loosen the screw on the case bottom.

Lift the end of the case bottom nearest the input test leads

until it unsnaps from the case top.

Replace the battery cover and tighten the screw. Recycle

the battery using approved methods.

Replace the battery. Observe battery polarities with

positive (+) faces up (towards the case bottom). Replace

the case bottom, and ensure that the snap on the case top

(near the LCD side) is engaged.

Replace and tighten the screw.

To avoid electrical shock, disconnect test leads from live

circuits before opening the case. Do not operate with open

case.

Specifications

(1) General Specifications

Display and Update Rate: 3-3/4 digits 3999 counts;

Updates 3 per second nominal

Operating Temperature: 0 °C - 40 °C

Operating Relative Humidity: Maximum 80% R.H.

up to 31 °C, decreasing linearly to 50% R.H. at 40 °C

Altitude: Operation below 2000 m

Storage Temperature: -20 °C ~ 60 °C, < 80% R.H.

(with battery removed)

Temperature Coefficient: Nominal 0.15 x (specified

accuracy)/ °C @ (0 °C ~ 18 °C or 28 °C ~ 40 °C), or

otherwise specified

7

Sensing: Average sensing

Overload Protection: 600V dc and V ac rms

Low Battery: Below approx. 2.4 V

Power Supply: 3 V standard button battery x 1

(IEC-CR2032)

Power Consumption (typical): 1.2 mA

APO Consumption (typical): 2.0 A

APO Timing: Idle for 10 minutes

Dimension / Weight: L115 mm x W 57 mm x H 12

mm / Approx. 75gm

(2) Special Features Auto-Select (Automatic V and Ω

selection) and Electric Field Detection

Safety: Meets IEC61010-1(2001),CAT II 600 V and CAT III

300V, Pollution Degree 2, Class 2

E.M.C. Meets EN61326 (2006), EN61000- 3-2 (2000), and

EN61000-3-3 (1995+A1:2001). CE Marking. However,

electrical noise or intense electromagnetic fields in the

vicinity of the equipment may disturb the measurement

circuit.

Measuring instruments will also respond to unwanted

signals that may be present within the measurement circuit.

Users should exercise care and take appropriate

precautions to avoid misleading results when making

measurements in the presence of electronic interference.

(3) Electrical Specifications (Accuracy @ 23 °C +/- 5 °C and

< 75% R.H.)

8

Auto-select

DC Voltage

Range Resolution Accuracy

4V 1mV

40V 10mV

400V 100mV

±(0.7%rd+4d)

600V 1V ±(0.8%rd+5d)

Input Impedance: 10 M, Max Input:600V DC

AC Voltage

Range Resolution Accuracy

4V 1mV

40V 10mV

400V 100mV

±(0.8%rd+4d)

600V 1V ±(1.2%rd+4d)

Range Accuracy: 40 Hz – 1K Hz, Input Impedance: 10 M,

Max Input: 600V AC

Resistance

Range Resolution Accuracy

4000.1

4K1

40K10

400K100

±(0.8%rd+2d)

9

4M1K

40M10K±(2.0%rd+5d)

Max Input: 250V DC/AC

Capacitance

Range Resolution Accuracy

40nF 10pF

400nF 0.1nF

4uF 1nF

40uF 10nF

200uF 100nF

±(4.5%rd+6d)

1) Accuracy below 40 nF is not specified

2) Top range. Updates > 1 minute on large values

3) Specified with battery voltage above 2.8 V (half full battery).

Accuracy decreases gradually to 12% at low battery

warning voltage of approx. 2.4 V.

4) Max Input: 250V DC/AC

Frequency

Range Resolution Accuracy

40Hz 0.01Hz ±(1.0%rd+5d)

400Hz 0.1Hz

4KHz 1Hz

40KHz 10Hz

400KHz 100Hz

±(0.5%rd+5d)

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