HTC CM-2070FT Manual

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）
4V
40V
±(0.5% reading+5）
400V
1000V
Resolution
0.1mV
1mV
10mV
100mV
1V