870E
3 1/2 DIGITAL DUAL DISPLAY
AC CLAMP MULTIMETER
OPERATION MANUAL
1. SAFETY INFORMATION
The following safety information must be observed to insure
maximum personal safety during the operation at this meter.
1.1 Do not operate the meter if the body of meter or the test lead
look broken.
1.2 Check the main function dial and make sure it is at the correct
position before each measurement.
1.3 Do not perform resistance, temperature, diode and continuity
test on a live power system.
1.4 Do not apply voltage between the test terminals and test
terminal to ground that exceed the maximum limit record in
this manual.
1.5 Exercise extreme caution when measuring live system with
voltage greater than 60V DC or 30V AC.
1.6 Keep the fingers after the protection ring when measuring
through the test lead.
1.7 Change the battery when the symbol appears to avoid incorrect
data.
2. Panel Layout
1)
Rotary Switch: use this switch to select functions and
ranges
on the display.
2)
Back light: Push the LIGHT button to light the backlight then it
will auto light off after approx. 5 seconds.
3
）
Data hold: Push the HOLD button and “DH” sign will appear
4)
Phase lamp
5) lack Phase LED light
6)
LCD Display
7)
a b c
Input Jack
3. SPECIFICATIONS
3.1 GENERAL SPECIFICATIONS
Display: 3 1/2 digit LCD with a max. reading of 1999.
Polarity: Automatic negative polarity indication.
Zero adjustment: Automatic.
Over range indication: Only the "1" or "-1" display.
Sample rate : 2 times/sec
Low battery indication: “
”
Safety Standards: The meter is up to the standards of IEC1010
Double Insulation, Pollution Degree 2, Over voltage Category
Ⅲ
.
Clamp opening size: 45mm.
Operating Environment: Temperature 32
～
104
°
F(0
～
40
℃
),
humidity
＜
75%RH.
Storage Environment: Temperature -4
～
140
°
F(-20
～
60
℃
),
humidity
＜
90%RH.
Power supply: 9V Zinc-carbon battery.
Dimension: 225(H)×77(W)×45(D)mm.
Weight: Approx. 330g (including battery).
3.2 ELECTRICAL SPECIFICATIONS
Accuracies are ±(% of r number in last digit) at 23
±
5
℃
,
≤
70%RH.
3.2.1 DC Voltage
Range
Accuracy
Resolution
1000V
±
(1.5% of rdg+5digits)
1V
Overload protection: 1000V DC/750Vrms AC
Impedance: 10MΩ
3.2.2 AC Voltage
Range
Accuracy
Resolution
Frequency
750V
±
(
1.8% of rdg+10digits)
1V
50~100Hz
Average sensing, calibrated to rms of sine wave
Overload protection: 1000V DC/750Vrms AC
Impedance: 10MΩ
3.2.3 AC Current
Range
Accuracy
Resolution
Frequency
20A
±
(3.0% of rdg+10digits)
10mA
50~60Hz
1000A
0~800
±
(3.5% of rdg+10digits)
1A
800~1000
±
(6.5% of rdg+10digits)
Average sensing, calibrated to rms of sine wave
Overload protection: 1000A rms within 60 seconds
3.2.4 Resistance
Range
Accuracy
Resolution
200
Ω
±
(
1.0% of rdg+15digits)
0.1
Ω
2000
Ω
±
(
1.5% of rdg+15digits)
1
Ω
Overload protection: 250V DC/250Vrms AC
3
.2.5 Diode test
Range
Description
Test condition
Display read
approximately forward
Voltage of diode.
Forward DC current approx
1.5mA
.Reversed DC voltage
approximately 3V
Overload protection: 250V DC/250Vrms AC
