eclipse MT-2019 Protective Function Analog Multimeter User Manual

MT-2019
Protective Function Analog Multimeter User’s Manual
1st, 2019
© 2019Copyright by Prokit’s Industries Co., Ltd.

INTRODUCTION

This Multi-meter is an accurate, safe, battery operated, rear tilt-stand, easy to operate handheld instrument with robust protective holster alongside and the adjustable back tilt  device with hook-up design. It can offer accurate, reliable measurement of DC/AC Voltage, DC Current, Resistance and Diode, LED, Transistor, Decibels, Continuity Buzzer  and Capacitance with very high sensitive quality movement, and good-designed circuit, as well as colorful Aluminum dial plate etc. It has the perfect full overload &  miss-used protection via Fuses, Oxide Varactor & Diodes. It is an ideal instrument for indoor use in the laboratory, school, workshop, hobby and home applications.

SPECIFICATIONS

-10 °C to 50°C, 14 °F to 122°F for Storage condition.
Humidity Scope| Operating condition less than 90% RH Storage condition: less than 80% RH
Accessories| One set of Test Leads; One Spare Fuse: 0.5A/250V
Size| 160(W) x 105(D)x 40(H) mm
Weight| 390g approx. (including batteries 3pcs)
Test Functions| Range| Accuracy| Remarks
---|---|---|---
DCV| 250V -1000V| 0-0.1-2.5-10-50- ± 3% FSD.
± 4% FSD • For 1000V| Input Impendence: 20K0/V
Overload Protection: Max. 1000V AC/DC BUT at 0.1/2.5/10V„ 250V Max.
ACV| 0-10-50-250V -1000V| + 4% FSD. + 5% FSD. for 1000V| Input Impendence: 9K0/V
Overload Protection: Max. 1000V AC/DC But 10V/50V only 250V Max. Band width: 40 -10K Hz
DC mA| 0-0.05-2.5-25- 250 mA,| ± 3% FSD.| Drop Voltage: 250mV Overload protected by Fuses 0.5N250V, and Oxide Varactor. <250V AC/DC(5s).
0| X1: 02 – 2K0 midscale at 200 X10: 2-20K0 Midscale at 2000 X100:20-200K0 Midscale at 20000
X1 K: 200- 2M0 Midscale at 20K0 X1OK: 2K 20M0 Midscale
at 200K0| ± 4% of ARC of Scale Length| Overload protected by the Oxide Varactor & Fuse <250V AC/DC(5s).
Capacitance (uF)| 2000uF| Approximate Value| Use the 0 X 1K range
BATT Check| 0 – 1.5V: GOOD – – BAD.
0 ? – 9V: GOOD – ? – BAD| + 5% of ARC
of Scale
Length Leng| Load Current:
270mA for 1.5V, 25mA for 9V.
Overload protected by Fuse & Oxide Varactor <250V AC/DC(5s).
Continuity Check
| Beeper sounding under 200 Ohm| | Overload protected by Fuse & voltage Suppressor <250V AC/DC(5s).
Transistor Check| hFE: 0-1000 via special hFE
socket| Approximate Value| At 0 X 10 Range
---|---|---|---
LED, Diode Check| via special hFE socket| Approximate Value| At 0 X 10 Range
Decibel| -22 dB — + 62 dB (OdB=1mW at 6000)| Approximate Value| At ACV ranges
Power Source| Internal Battery: R03, AAA, 1.5V 2pcs, 6F22, NEDA1604, 9V 1pc

CALIBRATION
Ω Zero Adjustor located at the right side of the panel, adjusting the meter pointer to the Zero mark on the right side of Ω scale of the meter dial when the test leads are  touched together.
Mechanical Adjustor Screw: located right below the center of the meter dial to set pointer to Zero mark at the left side of the scale.
(-) Jack: Plug-in connector at the lower left on the panel for Black, negative test lead.
(+) Jack: Plug-in connector at the lower right on the panel for Red, positive test lead.

OPERATING INSTRUCTIONS

CAUTION
When making voltage or current measurements, develop the habit of turning
off all power to the circuit under test. Connect the test leads at the desired
points in the circuit; then turn on the power while taking readings. Turn off
the power before disconnecting the test leads from the circuit.

INTERNAL BATTERY CHECK
To check the battery condition, insert the black test lead into the (-) jack. Set
the range switch to the Ω X1 range position and short the ends of the two
sides of the test leads. If the pointer can not be brought to the zero mark,
replace the 1.5V cells or 9V cell. (See battery replacement.)

BEFORE OPERATING

1. Set the range switch to the proper position before making any measurement.

2. Never apply more voltage or current than the rated value in every position.

3. When the voltage or current to be measured it not known, always start with the highest range.

4. If meter indication is in the lower half of the scale and falls within the range of a lower scale, reset selector switch to the lower range for greatest accuracy.

5. If the meter won’t wotk at all, check the fuse located on the PCB. If it’s blown, replace it. (See fuse replacement.)

6. Avoid placing the meter where extreme shock or continuous vibration is encountered and do not store in excessively hot or damp places.
   Although very rugged, the meter is a sensitive measuring device and should be handled carefully & properly.

7. Do not check resistance, transistor, diode, LED, or capacitance when live voltage or current input across the circuit.

8. When the meter is not in use, keep the selector switch to the “OFF” range position, this provides direct short across meter movement for minimum needle bounce when transporting meter.

9. If you should accidentally apply excessive voltage or current on a certain range, disconnect the leads from the circuot as quickly as possible, check instrument operation  on that range by applying peoper input. If the meter does not operate peoperly, check fuse. If it is blown replace it. (See fuse replacement.)

OPERATION PROCEDURES

DC Voltage Measurement
WARNING: WITH EXTREME CARE WHEN MAKING MEASUREMENTS FOR HUGH VOLTAGE, AND DO NOT TOUCH TERMINAL OR PROBE ENDS.

1. Set the selector switch to the appropriate DCV range to be used.
2. Connect the BLACK test lead to the “-COM” jack and the RED test lead to the “+” jack.
3. If you know the polarity of the circuit to be tested, connect the black probe to the negative side.
4. If you don’t know the polarity, connect the probes to opposite sides of the circuit and watch the pointer. If it goes to the left, reverse the probes. The RED probe will be  connected to the positive.
5. Check the needle position and the get the reading on V.A scale.

AC Voltage Measurement
WARNING: WITH EXTREME CARE WHEN MAKING MEASUREMENTS FOR HUGH VOLTAGE, AND DO NOT TOUCH TERMINAL OR PROBE ENDS.

1. Set the selector switch to the appropriate ACV range to be used and connect the test leads across the circuit or load under measurement. (Polarity of the test probes is  unimportant on ACV test.)
2. Connect the BLACK test lead to the “-COM” jack and the RED test lead to the“+” jack.
3. Check the needle position and the get the reading on V.A scale.

DC Current Measurement
WARNING: DO NOT APPLY VOLTAGE TO MEASURING TERMINAL WHILE RANGE SWITCH IS IN CURRENT POSITION DO NOT ATTEMPT TO  MEASURE AC CURRENT.

1. Set the selector switch to the appropriate DC mA range to be used and connect the test leads in series with the circuit or the load under measurement. If the pointer  deflects to the left, reverse the probes.
2. Connect the BLACK test lead to the “-COM” jack and the RED test lead to the Red “+” jack for Current at/less than 0.25A.
3. Check the needle position and the get the reading on V.A scale.

Note:
Excessive current input across mA range will blow the fuse that must be replaced by a same fuse rating 0.5A/250V.
Note: If connected incorrectly with the voltage at these ranges, quickly remove the test leads from the circuit and can avoid the damage to this tester.

(This tester can afford the voltage <250V DC/AC rms. for the period of 5 seconds max.)
Resistance Measurement
WARNING: DO NOT APPLY VOLTAGE TO MEASURING TERMINAL WHILE RANGE SWITCH IS IN OHM POSITION.

1. Set the selector switch to the appropriate Ω range to be used.
2. Connect the BLACK test lead to the “-COM” jack and the RED test lead to the Red “+” jack.
3. Short the leads by touching the probes together. Pointer should read zero at the right hand end of the uppermost scale, if it doesn’t, use the 0 Ω adjust knob on the right  hand of the panel to line up the pointer with zero. (If pointer can’t be brought to zero, replace battery.)
4. Connect the test leads across the resistance to be measured.
5. Take reading on the top “Ω” scale and multiply it by the multiplication factor indicated by the selector switch.
6. If there is little or no pointer movement from the left side of the scale, reset the selector switch to higher range. The effective reading scope on an Ω meter scale is within the area of between 25 degree of Arc left side to the Midscale and 25 degree right side to the Midscale.

Note: If connected incorrectly with the voltage, quickly remove the test leads from the circuit as to avoid the damage to this tester. (This tester can afford the voltage <250V  DC/AC rms. for the period of 5 seconds max.)
Diode Measurement
Set the selector switch to the appropriate Ω range to be used.
NOTE: To test the diode while current below 0.060 mA at X 10K range; current below 0.15 mA at X 1K range; current below 1.5 mA at X 100 range; current below 15 mA  at X 10 range; current below 150 mA at X 1 range.
For IF (forward current) Test
Put the BLACK test lead to the “-COM” jack and the RED test lead to the Red “+” jack. And then connect the Black probe to the Positive terminal of the Diode, the Red  probe to the Negative terminal of the Diode.
For IR (reverse current) Test
Reverse the connection.

1. Read the value IF or IR of the diode on the LI scale.
2. Read the linear (forward voltage) VF of the diode on the LV scale.

CONTINUITY TEST
WARNING: DO NOT APPLY VOLTAGE TO MEASURING TERMINAL WHILE RANGE SWITCH IS IN OHM POSITION.
Set the selector switch to the BUZZ range. Connect the test leads to two points of circuit. If the resistance is lower than 200 Ohm approx., the Beeper sounds.
Note: Battery voltage is sufficient for Buzzer operation as long as the Zero Ohm pointer can be adjusted to the Zero scale place.
Note: If connected incorrectly with the voltage, quickly remove the test leads from the circuit as to avoid damage to this tester.
(This tester can afford the voltage <250V DC/AC rms. for the period of 5 seconds max.)
Transistor hFE and LED Test
Set the selector switch to the Ω X 10 range.
For Measuring Transistor hFE

1. Take note the type of transistor “PNP” or “NPN” and then insert the transistor terminals of the Emitter, Base and Collector separately into the proper holes of the  socket on the front panel.
   1. Read the approximate hFE Value directly at the hFE scale.
   Note: Current 10μA. VCE 2.8V.

2. When the Base terminal cut, the value of Leak is Iceo for Transistor.

For Measuring LED
Insert the transistor terminals directly into the “+” and “-” holes of the socket on the front panel.
And then check if the LED under testing is lighting.
Battery Check

1. This meter can come with two separate battery check ranges to test either DC 1.5V or 9V batteries.
2. Set the selector switch to the appropriate BATT range to be used.
3. Connect the BLACK test lead to the “-COM” jack and the RED test lead to the Red “+” jack.
4. Connect the Red test lead to the positive end of battery and the Black one to the negative end of the battery to be measured.
5. Take reading on the “BATT” scale and check it good or bad as per which portion indicated.
   (Note: the mark section of “?” shows that the battery may be starting to decay.)

Note: If connected incorrectly with the voltage, quickly remove the test leads from the circuit as to avoid the damage to this tester.
(This tester can afford the voltage <250V DC/AC rms. for the period of 5 seconds max.)
Decibels Measurement

1. Set the selector switch to AC 10V range.
2. Connect the BLACK test lead to the “-COM” jack and the RED test lead to the “Output” jack.
3. Connect the test leads to the measuring circuit, and then read the bottom Red dB scale.
4. For more dB scope, change the selector switch to the others of ACV ranges and make the same actions. Add the appropriate number of dB scale reading as noted on the  chart below.
   Note: For absolute dB measurements, circuit impedance must be 600 Ohm. 0 dB = 1mw dissipated in a 600 Ohm impedance (equivalent to 0.755V across 600 Ohm)

Capacitance Measurement
WARNING: DO NOT APPLY VOLTAGE TO MEASURING TERMINAL WHILE MAKING ANY CAPACITANCE MEASUREMENTS.
BEFORE TESTING ANY CAPACITORS, DISCHARGE THE CAPACITOR COMPLETELY.

1. Set the selector switch to the Ω X 1K range.
2. Connect the BLACK test lead to the “-COM” jack and the RED test lead to the Red “+” jack.
3. Connect the test leads to the capacitor to be measured (Note the polarity of capacitor).
4. Watch the needle deflection to the right topside, and read the Red C scale on the Dial.

TROUBLESHOOTING
Nevertheless, problems or malfunctions may occur.
For this reason, the following is a description of how you can eliminate possible malfunctions by yourself:

indicator lit? Check the state of the batteries and the fuse 0.5A.
No measurements possible via V/mA socket.| Is the fuse defective? Check the fuse 0.5A (fuse replacement)
No change in measured values.| Have you selected the right measuring sockets? Is the measuring range/mode correct (AC/DC)?
Faulty measuring results are displayed.| Has null balancing of the display or a 0 0 calibration for the resistance measurement been carried out? Is the batteries not properly assembled in?

MAINTENANCE

Replacement for Battery and/or Fuse should only be done after the test leads have been disconnected and POWER OFF.

1. Battery Replacement

1. Note the condition of the batteries using the procedure described above, if the battery needs to be replaced, remove the screw and open the upper cover of the battery cabinet on the rear case.
2. Take off the spent batteries and replace them with a battery of the same type. Observing polarity as indicated battery polarity marking on the bottom of the battery  compartments.
3. Replace the battery cabinet cover and tighten the screw.

2. Fuse Replacement

1. When the fuse needs replacement, use only UL-Listed 0.5A/250V fuse identical in physical size to the original type Φ5 x 20 mm.
2. Disassemble the side Holsters, and take off the screw, then open the whole rear case. Remove the old fuse from its holder; install the new fuse into it.
3. Replace the rear cover & Holsters, and tighten the screw.

Test Equipment Depot
800.517.8431
www.testequipmentdepot.com
© 2019 Profit’s Industries Co., LTD. All rights reserved 2019001(C)

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