Mastech MS2301 Manuale utente

MS2301

1 
 
CONTENT 
I. Safety Rules and Precautions..........................................................2 
II. Brief Introduction...............................................................................4 
III. Model differentiation........................................................................ 5 
Ⅳ. Range andAcuracy.........................................................................5 
Ⅴ. Technical Specifications.................................................................... 6 
Ⅵ. Structure of Meter...........................................................................8 
Ⅶ. LCD Display.....................................................................................8 
Ⅷ. Measuring Principle ......................................................................10 
Ⅸ. Operation Method..........................................................................10 
1.Boot Up......................................................................................10 
2. Battery Voltage Check............................................................10 
3. Resistance Test.......................................................................11 
4.Clock Settings...........................................................................13 
5. Alarm Settings.................................................................113 
6. Date Lock.................................................................................14 
7. Data Storage / Review / Delete.............................................14 
Ⅹ．Battery Instructions......................................................................16 
Ⅺ．FieldApplication...........................................................................16 
Ⅻ． Accessories................................................................................22 

Ⅰ. Safety Rules and Precautions

Thank you for purchasing our company's clamp grounding

resistance tester. Before using the instrument for the first time,

in order to avoid possible electric shock or personal injury, please

be sure to: read and strictly observe the safety rules and

precautions listed in this manual.

In any case, use this instrument should pay special attention to

safety

The instrument is designed, produced and inspected

according to IEC61010 safety specifications.

In any case, the use of this instrument should pay special

attention to safety.

When measuring, high-frequency signal generators such as

mobile phones should not be used next to the meter to avoid

errors.

Pay attention to the text and symbols on the body of the

instrument.

Before use, make sure that the instrument and accessories

are in good condition before use.

Before starting the machine, press the trigger once or twice to

ensure that the jaws are closed properly.

Do not measure in a flammable place. Sparks may cause an

explosion.

Do not withhold the trigger and do not clamp any

wires when turning on the meter

After the power is turned on normally, the "OL Ω" symbol is

displayed, and the measured object can be clamped.

Do not place and store the instrument for a long period of

time under conditions of high temperature, humidity,

condensation, and direct sunlight.

When replacing the battery with the meter, make sure the

meter is turned off.

The instrument displays the battery voltage low symbol

“ ”, should replace the battery in time, otherwise it will

lead to ground error.

The jaw contact surfaces must be kept clean and cannot be

wiped with corrosives and rough objects.

When opening the trigger, avoid the impact of the clamp,

especially the jaw joint.

When the clamp meter measures the resistance, the clamp

head will make a slight noise, which is normal. Note the

“deep-beep-beep--”sound that distinguishes the alarm.

Pay attention to the measuring range and use environment

specified by this instrument.

Do not measure the lead current above the upper limit of the

clamp meter.

The use, disassembly, calibration and maintenance of this

instrument must be performed by authorized personnel.

Because of the reason of this instrument, if it is dangerous to

continue using it, it should be immediately stopped and

sealed immediately, and it should be handled by a qualified

organization.

The " " safety warning sign in the instrument and manual

must be operated strictly in accordance with the contents of

this manual.

Ⅱ. Brief Introduction

Clamp ground resistance tester, also known as loop

resistance tester, is used to test grounding resistance. The

instrument uses a new black luxury screen design, resistance and

current display in the same screen, and also has a real-time clock,

data storage, data access, alarm, automatic shutdown and other

functions. The machine is beautiful and upscale, has a wide range,

high resolution, convenient operation, easy to carry, accurate,

reliable, stable performance, strong anti-interference ability.

Moreover, it has a shockproof, dustproof, moisture-proof structure

and is a commonly used and indispensable instrument for

telecommunications, electricity, meteorology, computer rooms, oil

fields, electromechanical installation and maintenance, and

industrial enterprises that use electricity as industrial power or

energy. It is suitable for measuring various grounding resistances

such as telecommunications, electricity, meteorology, computer

rooms, oil fields, power distribution lines, transmission lines of iron

towers, gas stations, factory grounding networks, and lightningrods.

The clamp ground resistance tester is controlled by the

microprocessor and can accurately detect the ground resistance. It

uses a fast filtering technique to minimize interference.At the same

time data storage and data upload functions

III. Model differentiation

Model

Resistance

Range

Current Range

MS2301

0-1200Ω

0-20A

Ⅳ. Range and Accuracy

1. Ranges and Accuracy of Measurement

Mode

Range

Resolution

Accuracy

Resistance

0.010Ω-0.099Ω

0.001Ω

±（1%＋0.01Ω）

0.10Ω-0.99Ω

0.01Ω

±（1%＋0.01Ω）

1.0Ω-49.9Ω

0.1Ω

±（1%＋0.1Ω）

50.0Ω-99.5Ω

0.5Ω

±（1.5%＋0.5Ω）

100Ω-199Ω

1Ω

±（2%＋1Ω）

200Ω-395Ω

5Ω

±（5%＋5Ω）

400-590Ω

10Ω

±（10%＋10Ω）

600Ω-880Ω

20Ω

±（20%＋20Ω）

900Ω-1200Ω

30Ω

±（25%＋30Ω）

0.00mA-9.95mA

0.01mA

±（2.5%＋1mA）

Current

10.0mA-99.0mA

0.1mA

±（2.5%＋5mA）

100mA-300mA

1mA

±（2.5%＋10mA）

0.30A-2.99A

0.01A

±（2.5%＋0.1A）

3.0A-9.9A

0.1A

±（2.5%＋0.3A）

10.0A-20.0A

0.1 A

±（2.5%＋0.5A）

Ⅴ

Technical Specifications

Functions

Ground resistance test, Loop resistance test

Ambient Temperature

and Humidity

23℃±5℃，below 75%rh

Power Supply

DC 6V （4 AAalkaline dry batteries）

Range

Resistance: 0.01-1200Ω

Current：0.00mA-20.0A

Measure Method

Mutual induction

Resistance Resolution

0.001Ω

Jaw Size

55mm×32mm

Clock Function

Have

Display Mode

4-digit LCD display, black screen design

LCD Size

46mm×29mm

Meter Size

L/W/H：285mm×85mm×58mm

Measure Time

2times/second

Data Storage

300 groups，"MEM" storage indication, display "FULL"

symbol indicates that storage is full

Data Review

"MR" symbol indicates when looking up data

Overflow display

"OL" symbol indicates over-range overflow

Interference Test

Automatically identify interference signals, the "NOISE"

symbol indicates when the interference current is large

Alarm Function

Alarm when the measured value exceeds the alarm setting

value

Battery Voltage

Real-time display of battery power, reminding timely

charging when battery voltage is low

Automatic shut-down

Turn off after 5 minutes

Power Consumption

50mAMax

Weight

Meter：1180g (including battery)

Working Temperature

and Humidity

-10℃～40℃；below 80%rh

Storage Temperature

and Humidity

-20℃～60℃；below 70%rh

Insulation Resistance

Above 20MΩ(500V between circuit and case)

Pressure resistance

AC 3700V/rms(between circuit and case)

External Magnetic

Field

＜40A/m

External Electric Field

＜1V/m

Suitable for Safety

Regulations

IEC61010-1(CAT Ⅲ300V、CAT IV 150V、Pollution

degree2)；IEC61010-031；IEC61557-1(earth

resistance)；

Ⅵ

Structure

Meter

1. Clamp Jaw

2. Trigger

3. LCD

4. POWER Key

5. MODE Key

6. AL Alarm Function Key

7. MEM Key

8. SET Key

9. HOLD Key

10.CALIBRATION LOOP:1Ω

11. CALIBRATION LOOP:10Ω

VII. LCD Display

(1). Jaw Open Symbol

(2). Alarm Symbol

(3). Symbol of Greater Than

(4).

DC AC Symbol

(5). Symbol of data access

(6). Symbol of data memory

(7). Noise signal

(8). Data lock symbol

(9). Symbol of battery

(10). Resistance unit

(11). 4-digital LCD figures display

(12). Current unit

(13). 2-Digital No. Of Data Storage Unit

(14). 4-digital LCD current and clock display

Description of Special Symbols

⑴. Symbol of an open jaw: As a jaw is in the open state,

the symbol shows. At this point, trigger may be artificially

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