HTC CM-2070FT Manuale

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CM‐2070FT Digital Clamp Meter Manual

CONTENTS

SUMMARY....................................1

SAFETY NOTICE....................................1

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

GENERAL FEATURES..............................1

TECHNICAL FEATURES..............................1

OPERATION..............................1

PANEL DESCRIPTION..............................1

ACA MEASUREMENT.....................1

ACV MEASUREMENT.....................1

DCV MEASUREMENT.....................1

NCV MEASUREMENT.....................1

DIODE AND CONTINUITY TEST...............1

RESISTANCE MEASUREMENT...........................1

CAPACITANCE MEASUREMENT...........................1

FREQUENCY MEASUREMENT...........................1

TEMPERATURE TEST...........................1

AUTO POWER OFF...........................1

MAINTENANCE..............................1

TROUBLE SHOOTING..............................1

1. SUMMARY

This 3 3/4 Digit Highly Stable clamp meter uses two AAA (1.5V)

batteries. It has a LCD with 18mm digit display, which makes the

reading clearer and the operation more convenient. It can test DCV,

ACV, ACA, resistance, NCV, temperature, diode, and continuity test.

This meter also equips data hold function with unit symbol display,

can work in both auto and manual range, and provides auto power off,

clamp light, backlight and warning functions. To assure high

accuracy and resolution, it adopts an 8-bit microprocessor and a dual

integral A/D convertor IC .It is an ideal tool for labs, factories

radio-technology and household.

2. SAFETY NOTICE

The instrument is designed according to IEC1010-1 standard (safety

standard issued by International Electro technical Committee), CAT

III600V and UL3111-1. Please read the followings carefully before

any operation.

2.1 Please disconnect any signal and pluck out the test leads before

opening the outside cover.

2.2 To avoid electric shock and damage to the meter, water should not

be leaked inside.

2.3

DO NOT use this meter to do any test if the case hasn't

finished installation and its screws haven't been tightened.

2.4

DO NOT input the value higher than the limit at every

range.

2.5

Please don't input voltage in resistance terminal.

2.6

Please turn the power switch to OFF after the test.

2.7

To avoid the damage of battery leakage to the meter, please

remove the battery for long-term storage.

2.8

To avoid electric shock and damage to the meter, do not

input voltage higher than DC 60V or AC 30V during the

measurement.

2.9

To avoid electric shock, please be seriously careful when

nipping the bus bar or something insulated.

2.10

Introduction for safety symbols:

: Existing High Voltage.

: Dual Insulation.

: Operator must refer to manual.

: Low battery indication.

3. FEATURES

3.1 GENERAL FEATURES

3.1.1 Display: LCD.

3.1.2 Max. display: 4000 digits (3 3/4) , and auto polarity display .

3.1.3

Clamp open: Max. Open: 52mm.

3.1.4 Over-range display: "OL" displayed.

3.1.5 Data hold.

3.1.6 Relative Value measurement.

3.1.7 Sampling rate: approx.3 times/sec.

3.1.8 Low battery indicator: " "displayed.

3.1.9 Continuity test: buzzer sounds when<（50±10）Ω.

3.1.10 Range: Auto range or Manual range.

3.1.11 Auto power off.

3.1.12 Power consumption: about 3mA.

3.1.13 Power: 2 X 1.5V batteries (AAA).

3.1.14 Working environment: (0～40)℃, relative humidity: <70%.

3.1.15 Dimension: 123mm×270mm×35mm (width×length×height).

3.1.16 Weight: approx. 280g (including battery).

3.1.17 Accessories: user manual, certificate, test leads, temperature

sensor TP01 banana probe, two AAA batteries.

3.2 TECHNICAL FEATURES

3.2.1 Accuracy:

± (a% × reading data + digits). To assure accuracy, the

environment temperature should be (23±5) ℃, relative humidity be

<70%.

One year accuracy guarantee since production date.

3.2.2 Temperature coefficient: 0.1×specified accuracy/1℃（＜18℃ or

＞28℃）.

3.2.3 DC voltage (DCV)

Range

Accuracy

400mV

±(1.0% reading+5）

40V

±(0.5% reading+5）

400V

1000V

Resolution

0.1mV

1mV

10mV

100mV