Lutron Electronics MO-2014 Bedienungsanleitung

10 Amperes max. test current

Micro-Ohm Mete

Model : MO-2014

our purchase o

this Micro-Ohm

METER marks a

step forward for

you into the field o

precision

measurement.

lthough this

Micro-Ohm METER

is a complex and

delicate instrument,

its durable structure

will allow many

years of use i

proper operating

techniques are

developed. Please

read the following

instructions

carefully and always

keep this manual

within easy reach.

OPERATION MANUAL

TABLE OF CONTENTS

1. FEATURES..............................................................

2. SPECIFICATIONS.....................................................1

2-1 General Specifications........................................

2-2 Electrical Specifications.......................................2

3. FRONT / REAR PANEL DESCRIPTION........................ 3

4. BASIC 4 WIRES MEASURING PRINCIPLE................... 4

5. PRECAUTION & PREPARATIONS FOR

MEASUREMENT.......................................................5

6. MEASURING PROCEDURES......................................

6-1 Buttons instructions ....................................... 5

6-2 Symbols & units of display.................................. 6

6-3 Resistance Measurement.................................... 6

7. HI / LO WARNING SETUP........................................

8. CALCULATE CABLE / WIRE LENGTH.........................

9. RS232 PC SERIAL INTERFACE.................................. 10

10. BATTERY REPLACEMENT........................................11

1. FEATURES

*4 terminal devices for accurate measurement of very

low resistance.

*Ideal for measuring the resistance of components

precisely.

*Ideal for testing protective conductors, lightning

conductors and welded points.

*Maximum test current is 10A ( 60000 uΩrange only ).

*Have two working mode , Resistive and Inductive mode,

Normal is resistive mode.

*Good / Fail set-function for input quality control.

*Built-in in buzzer sound (GOOD STATUS) to assist the Q.C.

udgment.

*Especial "CALCULATE" function to measure cable /

wire length.

*Wide measuring range, 5 u Ω- 6K Ω, 6 ranges.

*Large size and back-light LCM display, easy read-out.

*LSI circuit provides high accuracy, reliability and

durability.

*Built-in over input protection.

*Durable bench type housing plastic case stand.

2. SPECIFICATIONS

2-1 General Specification

Test Range 60000 uΩ( 10 A DC )

(Test Current) 600 m Ω( 1 A DC )

6000 mΩ( 100 mA DC )

60000 mΩ( 10 mA DC )

600 Ω( 1 mA DC )

6000 Ω( 100 uA DC )

Warning Setup * Warning LCD Indicator

* Buzzer

Operating Temp. 0 to 50 ( 32 to 122 ).℃℉

Operating Humidit

Less than 80 % R.H..

Power Supply DC 1.5 V , AA (UM-3)Battery X 8 PCs .

AC to DC 9V Power adapter .

Fuse protect * 10 A / 250 V

* Size : 6.3 X 32 mm dia..

Dimension 225 x 125 x 64 mm

( 8.86 x 4.92 x 2.52 inch)

Weight Approx. 790 g ( 1.74 LB ).

Standard 4 wire with 2 Kelvin clips........1 pair

Accessories Instruction Manual.................1 PC

AC/DC 9V power adapter........... 1 set

Optional * USB cable, USB-01.

Accessories * RS232 cable, UPCB-02.

* Data Acquisition software,

SW-U801-WIN., SW-E802.

* SD card data recorder, DL-9602SD

2-2 Electrical Specifications ( 23± 5 )℃

Range Resolution Test current Accuracy

60000 u Ω1 u Ω10 A

600 m Ω10 u Ω1 A

6000 mΩ100 u Ω100 mA ± ( 0.25 % + 25 d )

60000 mΩ1000 u Ω10 mA

600 Ω10 mΩ1 mA

6000 Ω100 mΩ100 uA ± ( 0.75 % + 3 d )

@ The above accuracy is based on the reading value.

@ Spec. tested under the environment RF Field Strength less

than 3 V/M & frequency less than the 30 MHz only.

Range Open Circuit Voltage

60000 u ΩApprox. DC 4.33 V

600 m ΩApprox. DC 4.33 V

6000 mΩApprox. DC 4.33 V

60000 mΩApprox. DC 4.33 V

600 ΩApprox. DC 4.33 V

6000 ΩApprox. DC 4.33 V

3. FRONT/REAR PANEL DESCRIPTION

Fig. 1

3-1 Display 3-11 Force Terminal "+"

3-2 Backlight key button 3-12 Sense Terminal "+"

3-3 Zero key button 3-13 Sense Terminal "-"

3-4 SET / TEST key button 3-14 Force Terminal "-"

3-5 HOLD key button 3-15 RS232 socket

3-6 START / STOP key button 3-16 Reset button

3-7 L / key button▲3-17 DC 9V power adapter socket

3-8 Beep / key button 3-18 Battery Cover / Battery

3-9 COMP / key button▼

compartment

3-10 Power / Range rotary 3-19 Stand

switch 3-20 AC/DC 9V power adapter

3-21 Battery cover screws

4. BASIC 4 WIRES MEASURING

PRINCIPLE

The DIGITAL MICRO-OHM METER is a precise,

wide range, small resistance and high resolution

measuring instrument. As for preventing any measuring

errors, especially to avoid the influence of "LEAD STRAY

RESISTANCE" or "TEST WIRE'S RESISTANCE", the

meter is designed according to the following "4 WIRES

MEASURING PRINCIPAL" to maintain the meter in

high accuracy.

Fig. 2

*Please refer to 2-2 Electrical Specification ( page 2 ),

each range exists fixed test current ( from 6000 Ωto

60000 uΩ.

he fixed current flow through the unknown resistor Rx.

*From the terminal " Sense + " and " Sense - " can measure

a voltage Vx = Is x Rx.

*According the Vx value, then meter can get the unknown

resistance (Rx) values from following formula :

Rx = Vx / Is

he measured resistance value between "Sense +" and

"Sense -"is not affected by any stray resistance of test wire.

5. PRECAUTION & PREPARATIONS FOR

MEASUREMENT

*Please check carefully the meter's power supply is DC

9V power adapter before operating at 60000 uΩrange .

*It's prohibited to input voltage to the 4 wire input

terminal ( Force +, Sense +, Sense -, Force - ) to

prevent any internal circuit damage.

6. MEASURING PROCEDURES

6 -1 Buttons instructions

Buttons Functio

Backlight Press this key to turn backlight on and

Button off.

ZERO Button When the display indicate few reading

before measure .

SET/TEST Press this key to do HI / LO limit

Button setup.

Press this key return to TEST status.

HOLD Button Press this key to do data hold .

START/STOP Press this key to starting measurement

Button or stop.

L/ Button▲Press this key to setting work mode

(Resistive or Inductive).

Press this key to adjust up value.

BEEP/ Press this key to open / close buzzer

Button function.

Press this key to select digit unit.

COMP / ▼Press this key to start "GOOD , FAIL "

Button status judgment.

Press this key to adjust down value.

6 -2 Symbols & units of display

Symbol & Functio

Unit

uΩ,mΩ,ΩOhm unit

.))) Appears on the "BEEP" function have

started.

HOLD Appears on the"HOLD" function have

started.

GOOD It is pass Q.C. Appears on finished

compare operate.

FAIL It is higher or lower than maximum or

minimum acceptance value . Appears

on finished compare operate.

COMP Appears on the"COMPARE" function.

LAppears on the"INDUCTIVE" mode.

H I Appears to showing H I limit.

LO Appears to showing LO limit.

6 -3 Resistance Measurement

1) Power on the instrument by rotate the "Power /

Range rotary switch" ( 3-10, Fig. 1 ) to exit the " OFF "

position and then select measuring range from 60000 uΩ

to 6000 Ωaccording to your requirement.

Note

*Always select the highest range ( 6000 Ω

) if you don't know the resistance value o

the resistor and then select lower rang

in sequence.

*At 60000 uΩ( 10A )must use DC 9V

adapter from socket ( 3-17, Fig. 1 ).

*Over range LCD shows " ----- ".

*Can't measure the resistance value, LC

will show 0.0000, 0.000 or 0.00.

2)Connect the

* Red cable ( with white O ring marker ) to " Force + "

terminal ( 3-11, Fig. 1 )

* Red cable ( no white O ring marker ) to " Sense + "

terminal ( 3-12, Fig. 1 )

* Black cable ( with white O ring marker ) to " Force - "

terminal ( 3-13, Fig. 1 )

* Black cable ( no white O ring marker ) to " Sense - "

terminal ( 3-14, Fig. 1 )

3)Connect the 2 Kelvin clips as following Fig. 3 to measure

the unknown resistance.

4)Press the "START / STOP" key ( 3-6, Fig. 1 ) will start

measure the unknown device.

Press once again will stop measure function and

froze the result at LCM.

5)When your tested material has inductive, you can press

" L/ " key ( 3-7, Fig. 1 ) for change to inductor mode▲

( at 600 mΩand 60000 uΩrange) , Display will showing

" L " mark. normal is resistor mode.

7. HI/LO WARNING SETUP

This instrument has Hi, Lo warning value setup function

and a buzzer which are specially designed for quality

control.

Primary to press the " SET / TEST " ( 3-4, FIG. 1 )

button enter setting mode.

1) Hi warning value setup

he last digit should flash at " H i warning value " on

the display . Then press " L / " buttons ( 3-7, Fig.▲

1 ) to increase or " COMP / " buttons ( 3-9, Fig. 1 )▼

to decrease digit that you want to alter large value,

press the " BEEP / " buttons (3-8 , Fig. 1) set

warning value , When user to move 1st digit unit to

next digit unit (10th, 100th. 1000th).

* Hypothesize display be set at 180.00 .

2) LO warning value setup

Finished (1) procedure then press the " SET / TEST "

button ( 3-4, Fig. 1 ) again, The last digit should flash

at " LO warning value " on the display . Other

operate way same above explain.

* Hypothesize display be set at 179.00 .

3)Finished (1)(2) procedure then press the " SET /

EST " button ( 3-4, Fig. 1 ) once . The function

should return to TEST MODE and indicate measure

value when clipping the resistor.

4)When measuring period press " COMP / " ( 3-9 ,▼

Fig. 1) button once, The display will show " GOOD "

or " FAIL " symbol to inform be measure results.

For example

he value was readout 179.50 , The display

should show " GOOD " symbol and buzzer sounds.(

If buzzer function have been press on status, The

buzzer sounds can to assist Q.C judgment ) The

resistance value within the accuracy Pass the Q.C.

Press " BEEP / " ( 3-8, Fig 1) button once

will start buzzer, press once again to disable

" BEEP " function.

he value was readout 180.10 or 178.60, The

display should show " FAIL " symbol, The

resistance value out of the accuracy.

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