MI_2122_Z Loop-Line_ANG_Ver 1.0_ 20 750 385

8/2/2019 MI_2122_Z Loop-Line_ANG_Ver 1.0_ 20 750 385

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Z Loop/Line TesterMI 2122User Manual

Version 1.0, Code No. 20 750 385


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Distributor:

Producer:

METREL d.d.Ljubljanska 77SI-1354 HorjulTel.: +386 1 755 82 00Fax.: +386 1 754 92 26http://www.metrel.si;E-mail:[email protected]

Mark on your equipment certifies that this equipment meets the requirements of the EU(European Union) concerning safety and interference causing equipment regulations

1999, 2000 Metrel

No part of this publication may be reproduced or utilised in any form or by any meanswithout permission in writing from METREL.
http://www.metrel.si/mailto:E-mail:[email protected]:E-mail:[email protected]://www.metrel.si/


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MI 2122 Z Lppp Line Table of content

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1. General introduction ------------------------------------------------------------------------------- 4 1.1. Features --------------------------------------------------------------------------------------------41.2. Applied Standards ------------------------------------------------------------------------------- 4

2. Instrument description ------------------------------------------------------------------------ 5 2.1. Instrument Casing-------------------------------------------------------------------------------- 52.2. Operators Panel --------------------------------------------------------------------------------- 52.3. Connectors----------------------------------------------------------------------------------------- 62.4. Bottom Section------------------------------------------------------------------------------------ 72.5. Accessories---------------------------------------------------------------------------------------- 7

3. Warnings and Instrument Messages---------------------------------------------------------- 8 3.1. Warnings -------------------------------------------------------------------------------------------83.2. Instrument Messages ---------------------------------------------------------------------------8

4. Measurements-------------------------------------------------------------------------------------- 10

4.1. Line / Loop Impedance Z LINE, Z LOOP--------------------------------------------- 10

4.2. Loop Resistance R L/15mA (without tripping out RCD)----------------------------- 124.3. Phase sequency-------------------------------------------------------------------------------- 12

5. Operation with Results -------------------------------------------------------------------------- 14 5.1. Storing of Measurement Results ----------------------------------------------------------- 145.2. Storage Handling------------------------------------------------------------------------------- 155.3. Data Transfer------------------------------------------------------------------------------------ 18

6. Maintenance----------------------------------------------------------------------------------------- 19 6.1. Inspection ---------------------------------------------------------------------------------------- 196.2. Battery Replacement -------------------------------------------------------------------------- 196.3. Cleaning ------------------------------------------------------------------------------------------ 20

6.4. Calibration---------------------------------------------------------------------------------------- 206.5. Service-------------------------------------------------------------------------------------------- 20

7. Specifications--------------------------------------------------------------------------------------- 21 7.1. Measurements ---------------------------------------------------------------------------------- 217.2. General Specifications------------------------------------------------------------------------ 22


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MI 2122 Z Lppp Line General introduction

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1. General introduction

1.1. Features

The SMARTEC Z Loop/Line Tester is a portable hand-held battery powered testinstrument intended for testing of safety measures on mains installations. It operates ona SIMPLE and CLEAR basis.The equipment is designed and produced with the extensive knowledge and experienceacquired through many years of dealing with electrical installation test equipment.

General functions of the SMARTEC Z Loop/Line Tester:- Line Impedance measurement - ZLINE,- Loop Impedance measurement - ZLOOP,- Loop Resistance measurement without tripping out RCD - RLOOP/15mA,

-Three phase sequence measurement,

- Voltage UL-N / UL-L / UL-PE and frequency measurement,Features:- High accuracy of impedance measurement due to high test current,- Measurement posible even between two phases,- Memories,- PC connection.

The instrument is supplied with all basic accessories necessary for carrying out thetests.

Most of the electronic parts of the instrument are produced in SMD technology, whichrequires practically no service intervention. A custom designed LCD offers easy to readresults. Operation is simple and clear, the operator does not need any special training(except reading and understanding this Users Manual) to operate the instrument.In order for the operator to be familiar with measurements in general, it is advisable toread the handbook Measurements on electric installations in theory and practice.

The instrument allows storage of test results. Professional PC SW enables simpletransfer of test results and other parameters in both directions between the testinstrument and PC. Using this system, complete measurement procedures can beconducted quickly giving the operator a significant advantage over other operators, who

need to create the protocols manually.

1.2. Applied Standards

Instrument operation: IEC / EN 61557-1, IEC / EN 61557-3,IEC / EN 61557-7DIN VDE 0413-3, DIN VDE 0413-9,DIN VDE 100, BS 7671 16 th edition

Electromagnetic compatibility (EMC): EN 50081-1, EN 50082-1, IEC 61326 Class BSafety: EN/IEC 61010-1 (instrument),

EN/IEC 61010-2-31 (accessories)


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MI 2122 Z Lppp Line Instrument description

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2. Instrument description

2.1. Instrument Casing

The instrument is housed in a plastic casing which maintains the protection classdefined in general specifications. The casing consists of a main section which includesthe operator's panel and connectors and of a flexible cover.

Note! The cover is permanently fixed to the basic section and cannot be detached.

2.2. Operators Panel

The operators panel consists of a custom LCD, a rotary switch, and a keyboard, seethe figure below.

Fig. 1. Front panel

1

3

4

2

7 865

L N

1

2

3

4


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Legend:1..........Custom designed LCD.2..........Up key to increase storage group.3..........START key to start any measurement.4..........DISP key to display subresults of selected function.

5..........MEM key to store and recall results.6..........CLR key to erase memorized results.7..........Down key to decrease storage group.8..........Rotary switch to select measurement function.

2.3. Connectors

Fig. 2. Connectors

Legend:1..........Test connector.2..........RS 232 connector to connect the instrument to PC.3..........Battery charger connector.

Test connector is intended for connection of test cable and is accessible only when the

instrument cover is lifted up. RS 232 and battery charger connectors are accessible onlywhen the cover of the instrument is closed. For safety reasons both connector fields cannot be accessible at the same time, the cover of the instrument selects the accessibleone.

Use originl test accessories only!

Max. allowed voltage between mains test terminalsand ground is 300 V!Max. allowed voltage between mains test terminalsis 600 V!

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1 2 3


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2.4. Bottom Section

Fig. 3. Bottom section

Legend:1..........Plastic housing.2..........Screw (4 pieces) to fix the battery cover.3..........Battery compartment cover.4..........Battery cover warnings.5..........Trade mark label place.

2.5. Accessories

The instrument consists of standard and optional accessories. Optional accessories canbe delivered upon request. See attached list for standard configuration and options orcontact your distributor or see the METREL home page: http://www.metrel.si .

1

2

3

4

5

DISCONNECT ALL TEST LEADS AND SWITCH OFF THE INSTRUMENTBEFORE REMOVING THE BATTERY COVER - HAZARDOUS VOLTAGE!DO NOT CHARGE IF BATTERY COMPARTMENT CONTAINS ALKALINE CELLS!

POWER SUPPLY: 4 1,2 V - NiCd, NiMH RECHARGEABLE (IEC LR 14)or 4 1,5 V ALKALINE BATTERIES (IEC LR 14)

VOR OFNEN DES BATTERIEFACHS ALLE ZULEITUNGEN VOM GERATENTFERNEN UND DAS GERAT AUSSCHALTEN - GEFAHRLICHE SPANNUNG!NICHT AUFLADEN WENN ALKALZELLEN VERWENDET SIND!

STROMVERSORGUNG: 41,2V - NiCd, NiMH AUFLADBAR (IEC LR 14)oder 41,5V - ALKALZELLEN (IEC LR 14)
http://www.metrel.si/http://www.metrel.si/


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MI 2122 Z Lppp Line Warnings and Instrument Messages

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Description of possible messages:

>1999 Result over range.

hot The instrument overheated wait to cool down!

rS Active serial communication.

PE Line and PE conductors exchanged.rES *Reset of the instrument (erased memories).

End MEM All storage locations occupied.

MEM Operation with storage (store or recall).

No MEM No result to be stored or no stored result to be recalled.

rCL Recall function is entered.

Clr flashing Confirm or abort clearing of last stored result?

Clr / ALL alternating Confirm or abort clearing of all stored results?

Table 1. Messages

Note!

* This indication appears after the first insertion of batteries, i.e. when there were nobatteries in the battery compartment for a specific period of time (a few hours), or ifthe microprocessor detects an irregular state in its memory or if reset of theinstrument has been performed.


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MI 2122 Z Lppp Line Measurements

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4. Measurements

4.1. Line / Loop Impedance Z LINE, Z LOOP

The following two figures present connection of the instrument to tested object forLine/Loop Impedance or Loop Resistance measurement. Figure 5. presents standardmeasurement with mains cord connected to wall socket while figure 6. presentsconnection of the instrument to mains installation using universal test cable.

Fig. 5. Connection of the instrument to tested object using standard mains cord

Fig. 6. Connection of the instrument to tested object using universal test cable

L1

L2

L3

N

PE

RCD

L1

L2

L3

N

PE

RCD

PE N L3 L2 L1


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Impedance measurement is carried out with high test current pulse. Max test currentcan reach the value even up to 25 A (phase-neutral or phase-PE terminals) within 10ms. High test current is required for high accuracy of test result. The measurement canbe done between phase and neutral, between phase and PE or between two phaseconductors. Prospective short-circuit current is calculated on bases of measured

impedance as follows:Ipsc = Un / ZL-N(L-L)

Where:

Un ...........115 V (100 Uinp. < 160 V)

230 V (160 Uinp. 264 V)

400 V (264 < Uinp. 440 V) only line impedance

How to carry out the measurement:- Connect test leads to tested object according to the figure 5. or 6.- Select Z Line or Z Loop function bymeans of rotary switch knob. Present UL-N, UL-L

or UL-PE voltage is continuously measured and displayed. Press the DISP key tocheck frequency of present voltage.

- Press the START key and wait the measurement to be completed.- Read displayed result (Impedance), see the figure below.- Check subresults (Prospective short-circuit current Ipsc, Resistive part of measured

impedance and Inductive part of measured impedance) using the DISP key.- The result can optionally be saved using the MEM, up and down keys, see

instructions in paragraph 5.2. Storage handling.

A

Impedance Result Prospective short-circuit current

R XResistive part of impedance Inductive part of impedance

Fig. 7. Example of displayed result

Notes!

Nominal input voltage range is 100 to 264 V (ZLOOP) and up to 440 V (ZLINE). !

symbol and present voltage will be displayed blinking way after pressing the STARTkey if the voltage is lower than 100 V or higher than upper limit value!

Specified accuracy of Impedance measurement is valid only if mains voltage is

stabile during the measurement!


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4.2. Loop Resistance R L/15mA (without tripping out RCD)

Loop Resistance measurement is carried out with low test current (15 mA). The currentwill not cause tripping out involved RCD even the one with the lowest nominal diferentialcurrent (30 mA).

How to carry out the measurement:- Connect test leads to tested object according to the figure 5. or 6.- Select RL/15mAfunction bymeans of rotary switch knob. Present UL-PE voltage is

continuously measured and displayed. Press the DISP key to check frequency ofpresent voltage.

- Press the START key and wait the measurement to be completed.- Read displayed result (Resistance), see the figure below.- The result can optionally be saved using the MEM, up and down keys, see


Fig. 8. Example of displayed result

Notes! Nominal input voltage range is 100 to 264 V. ! symbol and present voltage will be

displayed blinking way after pressing the START key if the voltage is lower than 100V or higher than 264 V!

Specified accuracy of Loop Resistance measurement is valid only if mains voltage isstabile during the measurement!

If there is no RCD involved in tested loop, then it is advised to use Impedancemeasurement becouse of higher accuracy due to higher test current.

4.3. Phase sequencyHow to carry out the measurement- Connect test leads to tested location according to the next figure.- Select function bymeans of rotary switch knob.

- Press the START key and read displayed result (Phase sequency), see the figure10.

- Press the START key again to stop the measurement.- The result can optionally be saved using the MEM, up and down keys, see



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Fig. 9. Connection of test leads to tested location

V

Single phase connection wrong polarity Single phase connection - right polarity

Three phase connection see notes Three phase connection - see notes

Fig. 10. Example of phase sequence measurement results

Notes!1.2.3 .......... Phase sequence is in accordance with test lead marks.2.1.3 .......... Phase sequence is not in accordance with test lead marks.

Nominal input voltage range is 100 V up to 440 V.

L1

L2

L3

N

PE

RCD

PE N L3 L2 L1

L3L2 L1


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MI 2122 Z Lppp Line Operation with Results

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5. Operation with Results

5.1. Storing of Measurement Results

The memory for storing of measurement results has a stacking group organization. Theoperator has the possibility to organize 1999 groups. Each group has the possibility tostack any measured result. In storing result mode the operator selects a group andthen the result is stacked togather with all its parameters into the selected group. Thefigure below shows a graphic presentation of result grouping.

G1 G2 G3 Gn G1999..... .....

R1

R2

Rm

Ri

Fig. 11. Storage locations organization

A set of information stored on location Ri (main result, subresults and parameters)depend on selected function. There can be many results stored on the same location.

Practical Example of Storage Organization

For example: There is a standard house installation that has to be verified regardingvarious electrical characteristics. Test plan shall be prepared before any measurementis taken. The plan is based on wiring schematics and contains group definitions e.g.floor, room, wall socket and the related measurements in each group. The groups areassigned with numbers from 1 to 1999. When the test plan is defined the operator startsto run the measurements from group to group. The instrument asks every time for thegroup when storing test results. The result can be simply stored into appropriate group if

the group number already corresponds to selected measurement place in test plan,otherwise the group number can be changed first and then the result stored.

All results can be stored under a single group, e.g. No.: 1, if there is no need forgrouping.


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5.2. Storage Handling

The following keys are intended to be used for storage handling: MEM, , and CLR.There are the following possibilities of handling:

To storeresult (resultis displayed)

a) Press the MEM key after completing the measurement. Last usedgroup will be offered automatically, see the figure below.

b) Use and keys to change group number.c) Press the MEM key again to store result.

MEM MEM Offered group number Once stored - no possibility

to store the same result again

Fig. 12. Group code and reaction to double storing of the same result

Notes!- Press the START key or change rotary switch position to cancel

store procedure.- Each resul can be stored only once.

To recallstoredresults:

a) Press the MEM key just after changing rotary switch position, MEMmark will appear on LCD and rCL for a moment followed by the lastaccessed group number.

b) If there is no stored data no and MEM will flash for a secondfollowed by selected function idle state display.

c) Use the and keys to change the group number.d) Press the MEM key again once appropriate group is selected to

recall stored result. If there is no result stored in selected group noMEM will flash followed by the group number.

e) Use the DISP key to check subresults and parameters.

f) To see previous or next stored results inside selected group press

or key. Every entry is followed by the number of function and thenthe result.

g) Press the MEM key to change group number and go to b).

Note!- Press the START key or change rotary switch position to cancel

recall procedure.


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Indication when entering recallprocedure

MEM

MEM

Last accessed group is offered Storage buffer empty

MEM

Code of stored function(rotary switch position 2 = ZLOOP)

MEM

A

MEM

Recalled main result (ZLINE) Prospective short-circuit current

MEM

R

Resistive part of impedance

MEM

X

Inductive part of impedance

Fig. 13. Example of recalled result

To clearcompletememory:

a) Exit storage operation (storing or recalling), press the CLR key andkeep it pressed until Clr and ALL messages start to alternate thenrelease it.

b) Press the CLR key again to erase all memory locations.


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MEM

MEM

Fig. 14. Waiting for confirmation ClrandAllare alternating


clear procedure.

To clear onlylast storedresult:

a) Exit storage operation (storing or recalling), press the CLR key, Clrmessage appears then release the key.

b) Press the CLR key again to erase last stored result.

MEM

Fig. 15. Waiting for confirmation Clr is blinking


clear procedure.


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Stored Parameters

There is a list of results, subresults and parameters stored for each function.

Function No. Stored data Function No. Parameters

ZLINE 1 Function codeImpedanceProsspective short-circuit currentResistive partInductive part

RL/15mA 3 Function codeResistance

ZLOOP 2 Function codeImpedanceProsspective short-circuit current

Resistive partInductive part

5 Function codePhase sequency

Table 2. Stored parameters

5.3. Data Transfer

Stored results can be transferred to a PC. A special communication program has theability to identify the instrument and download the data.

How to transfer stored data:- Connect PC COM port to the instrument with the serial communication cable.- Turn power on of PC and the instrument.- Run the program smartlink.exe.- The PC and the instrument automatically recognise each other.- The program on the PC enables the following possibilities:-- download data;-- clear storage;-- change and download user data;

-- prepare a simple report form;-- prepare a file to import to a spreadsheet.

The program smartlink.exe is a Windows 95/98 based PC software. Read fileREADME.TXT for instructions on installing and running the program.


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MI 2122 Z Lppp Line Maintenance

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6. Maintenance

6.1. Inspection

To maintain operators safety and ensure reliability of the instrument it is good practiceto inspect the instrument on regular basis. Check the instrument and accessories not tobe damaged. If any defect is found please consult service centre, distributor ormanufacturer.

6.2. Battery Replacement

Present battery symbol on the upper left corner of the LCD indicates low battery state(Ubat < 4.2 V).

If the low battery state is indicated the batteries must be replaced to ensure accuratemeasurements.

The instrument is switched off automatically when battery voltage drop down to 4.0 V,bat indication is displayed before switching off.

Notes!

All four cells shall be replaced each time.

! Turn power off and disconnect any measurement accessory connected tothe instrument before opening battery cover.

Nominal power supply voltage is 6 V DC. Use four 1.5 V alkaline cells, type IEC LR14(dimensions: diameter = 26 mm, height = 50 mm).

+ +

+ +

Fig. 16. Correct polarity of inserted batteries


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MI 2122 Z Lppp Line Maintenance

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One set of full-capacity alkaline cells can supply the instrument for approx. 150hours.

Rechargeable NiCd or NiMH battery can be used instead of alkaline. The instrumentcontains an additional connector for charging the batteries.

Notes!

Insert cells correctly, otherwise test instrument will not operate and battery could bedischarged, see the figure above for correct battery polarity!

If the instrument is not to be used for a long period of time remove all batteries fromthe battery compartment.

To ensure the integrity of the stored results do not let battery compartment be emptyfor more than 1 minute.

Warnings!Do not charge when alkaline batteries are fitted!Take into account handling, maintenance and recycling requirements as defined byrelated standards and manufacturer of alkaline or rechargeable batteries.

6.3. Cleaning

Use a soft cloth slightly moistened with soapy water or spirit to clean the surface of theinstrument and leave the instrument to dry totally, before using it.

Notes!

Do not use liquids based on petrol or hydrocarbons! Do not spill cleaning liquid over the instrument!

6.4. Calibration

It is essential, that all measurement instruments are regularly calibrated. For occasionaldaily use, we recommend an annual calibration to be carried out. When the instrumentis used continuously every day, we recommend calibration of the instrument every sixmonths. Please contact your distributor or manufacturer for further information.

6.5. Service

Repairs under or out of warranty time: Please contact your distributor for furtherinformation.

Note!

Unauthorised person is not allowed to open the instrument!


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MI 2122 Z Lppp Line Specifications

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7. Specifications

7.1. Measurements

Fault Loop Impedance and Prospective Short-circuit Current

Measuring range ZL-PE (0.2 1999)

Display range ZL-PE () Resolution () Accuracy

0.00 19.99 0.01

20.0 199.9 0.1

200 1999 1

(5% of reading + 5digits)

Display range Ipsc (A) Resolution (A) Accuracy

0.06 19.99 0.0120.0 199.9 0.1

200 1999 1

2.00k 19.99k 10

20.0k 24.4k 100

Consider accuracy of ZL-PE

Ipsc calculation: Ipsc = UN1.06 / ZL-PE

UN = 115 V; (100 V Uinp < 160 V)

UN = 230 V; (160 V Uinp 264 V)Max. test current (at 230 V) 23 A (10ms)

Nominal input voltage 100 up to 264 V, 45 - 65 Hz

Fault Loop Resistance (no RCD trip out)

Measuring range RL (20 1999)

Display range RL () Resolution () Accuracy

0.0 199.9 0.1

200 1999 1(5% of reading + 5)

Test current: 15mA

Note: Accuracy is defined for stabile line conditions

Line Impedance and Prospective Short-circuit Current

Measuring range ZL-N(L) (0.2 1999)

Display range ZL-N(L) () Resolution () Accuracy

0.00 19.99 0.01

20.0 199.9 0.1

200 1999 1

(5% of reading + 5digits)


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Display range Ipsc (A) Resolution (A) Accuracy

0.06 19.99 0.01

20.0 199.9 0.1

200 1999 1

2.00k 19.99k 10

20.0k 42.4k 100

Consider accuracyof ZL-N(L)

Ipsc calculation: Ipsc = UN1.06 / ZL-N(L)

UN = 115 V; (100 V Uinp < 160 V)

UN = 230 V; (160 V Uinp 264 V)

UN = 400 V; (264 V < Uinp 440 V)

Max. test current (at 400 V): 40 A (10ms)Nominal input voltage: 100 up to 440 V, 45 - 65 Hz

Phase Rotation

Nominal mains voltage range: 100 440VResult displayed: 1.2.3 or 2.1.3

Voltage UL-PE

Display range U (V) Resolution (V) Accuracy

0 264 1 (3% of reading + 3V)

Nominal frequency range: DC, 45 65 Hz

Voltage UL-N

Display range U (V) Resolution (V) Accuracy

0 440 1 (3% of reading + 3V)

Nominal frequency range: DC, 45 65 Hz

7.2. General SpecificationsPower supply 6V DC (4 1.5V alkaline battery IEC LR14)

or 4.8V DC (4 1.2V NiCd, NiMH rechargeablebattery IEC LR14)

Battery charging 1.5 hours for full charge (using fast charger)Auto power off yes, approximately 10 min of no activity.

Dimensions (w h d) 15.5 9.5 19 cmWeight (without accessory, with battery) 1.2 kg


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Display custom LCDMemory approx. 1000 measurementsComputer connection RS 232 (9600 baud, no parity, 8 bit data,

1 stop bit)

Protection classification Class II (double insulation)Over-voltage category CATIII 300VPollution degree 2Protection degree IP 54

Working temperature range 0 40 C

Reference temperature range 10 30 C

Max. humidity 85 % RH (0 40C)

Reference humidity range 40 60 % RH


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MI_2122_Z Loop-Line_ANG_Ver 1.0_ 20 750 385