HOLDPEAK
870L
OPERATION MANUAL
This LCD Auto Range & Auto Power off Digital AC clamp multi
meter is a portable, 3 3/4-digit multi meter. It is ideally suited for
field, laboratory, shop and home applications.
1. SAFETY INFORMATION
The following safety information must be observed to in sure
maximum personal safety during the operation at this meter.
1) When measuring voltage ensure that instrument is not
switched to the current range, resistance range, diode and
continuity range, capacitance range or temperature range.
2) Use extreme care when measuring voltage above 50V.
especially from sources where high energy is existed.
3) Avoid making connections to "live" circuits whenever possible
Before making resistance measurements, diode or continuity test,
capacitance test or temperature test, ensure that the circuit under
test is de-energized.
4) Always ensure that the correct function and range is selected.
5) Extreme care should be taken when using the instrument to
conjunction with a current transformer connected to the terminals
if an open circuit occurs.
6) Ensure that the test leads and probes are in good condition
with no damage to the insulation.
7) Take care not to exceed the over-load limits as given in the
specifications.
8) Before opening the cover of the battery cabinet to replace
batteries. disconnect the test leads from any external circuit, set
the selector switch to "OFF" position.
9) Keep the fingers after the protection ring when measuring
through the instrument lead.
10) In order to avoid incorrect data, when the battery is low, they
have to replace the battery
2. Panel Layout
1
）
Rotary Switch: use this switch to select functions and ranges
2
）
D.HOLD key
：
In any range, push the key, the present display
value will be locked and the "H " symbol will appear, push it again
to exit HOLD and the " H" symbol disappear.
3
）
SELECT key
：
This tester turn
on the "Ω" range. Push the key
to choose resistance, diode ,continuity or capacitance test. This
tester turn on the voltage or current range, Push
“SELECT” to
choose AC or DC test. This tester turn on the
“
℃
/
℉
” range press
this button, select
℃
/
℉
measurement;
4
）
REL key
：
Push the key, the present display value will be stored
in memory ,then the new display value is the difference between
input value and stored data. In Hz/Duty measurement, it can not
work. Press this button the screen will also shows that "
▲
"
symbol
5)
Maximum / minimum measurement: Push this key ,the
instrument enter into the model, dynamic record in change input
signal to capture and record in the maximum signal (MAX) or
minimum value (MIN)
6
）
Hz/DUTY key
：
In Hz range, push the key, you can measure the
duty ,push again, go back to Hz measurement. In AC voltage
or AC current range, push it, you can measure Hz and duty, but
the measurement range will be smaller, and the auto range mode
will be changed to manual range mode.
7
）
LCD Display
：
LCD Dual Display, facilitates reads the data.
8
）
“
T+
VΩHz
”
Input Jack
、
COM Input Jack
、
“
T-
”
Input Jack
2.1 GENERAL SPECIFICATIONS
Display: 3 3/4 digit LCD with a max. reading of 3999.
Range control: Auto range
Polarity: Automatic negative polarity indication.
Zero adjustment: Automatic.
Over range indication: Only the "OL" or
“-OL”display.
Low battery: The "BATT" is display when the battery voltage is
below 2.4V approx.
Auto Power Off: 15 minutes after stopping the switch or no push
button, the meter automatically enter to power off mode. Push
button or run switch, auto power off disable.
Safety Standards: The meter is up to the standards of IEC1010
Double Insulation, Pollution Degree 2, Overvoltage Category
Ⅲ
600V.
Clamp opening size: 45mm.
Operating Environment: Temperature 0
～
104
℉
(0
～
40
℃
),
humidity
＜
80%RH.
Storage Environment: Temperature -4
～
140
℉
(-20
～
60
℃
),
humidity
＜
80%RH.
Power supply:
9V Zinc-carbon battery.
Dimension: 225(H)×77(W)×45(D)mm.
Weight: Approx. 350g (including batteries).
2.2 ELECTRICAL SPECIFICATIONS
Accuracies are ±(% of rnumber in last digit)
at 23
±
5
℃
,
≤
75%RH.
2.2.1 DC Voltage
Range
Accuracy
Resolution
400mV
0.5% of rdg+15digits
0.1mV
4V
1mV
40V
10mV
400V
100mV
1000V
1.2% of rdg+10 digits
1V
Overload protection: 1000V DC/750Vrms AC
Impedance: 10M
Ω，
More than100M
Ω
on 400mV scale
2.2.2 AC Voltage
Range
Accuracy
Resolution
Frequency
4V
1.0% of rdg+15 digits
1mV
50
～
400Hz
40V
10mV
400V
100mV
750V
2.5% of rdg+15 digits
1V
50
～
100Hz
Average sensing, calibrated to rms of sine wave
Overload protection: 1000V DC/750Vrms AC
Impedance: 10M
Ω，
More than 100M
Ω
on 400mV scale
2.2.3 AC Current
Range
Accuracy
Resolution Frequency
40A
3.0% of rdg+20 digits
0.01A
50
～
60Hz
400A
2.5% of rdg+20 digits
0.1A
1000A
0
～
800
2.5% of rdg+25 digits
1A
800
～
1000
5.5% of rdg+25 digits
Average sensing, calibrated to rms of sine wave
Overload protection: 1000Arms within 60 seconds
2.2.4 Resistance
Range
Accuracy
Resolution
400Ω
1.8% of rdg+20 digits
0.1Ω
4k
Ω
1.2% of rdg+20 digits
1Ω
40k
Ω
10Ω
400k
Ω
100Ω
4MΩ
1k
Ω
40MΩ
2.0% of rdg+20 digits
10k
Ω
Overload protection: 250V DC/250Vrms AC
2.2.5 Capacitance
Range
Accuracy
Resolution
40nF
3.5% of rdg+30 digits
10PF
400nF
2.5% of rdg+25 digits
100PF
4u
μ
F
1nF
40
μ
F
5.0% of rdg+10 digits
10nF
400
μ
F
20.0% of rdg+20 digits
100nF
4000
μ
F
1
μ
F
Overload protection: 250V DC/220Vrms AC
2.2.6 Frequency
Range
Accuracy
Resolution
Sensitivity
10Hz
0.5% of rdg+10 digits
0.01Hz
Range of
input
voltage:1.5V
~10V,
If input
voltage over
range, need
adjust
100Hz
0.1Hz
1000Hz
1Hz
10kHz
10Hz
100kHz
100Hz
1000kHz
1kHz
10MHz
10kHz
Overload protection: 250V DC/220Vrms AC
Duty cycle: 0.1%
～
99.9%
2.2.7 Temperature(NiCr-NiSi sensor)
Range
Accuracy
Resolution
℃
/
℉
-20
～
150
℃
-4
～
302
℉
±
(3
℃
+2)
1
℃
/1
℉
150
～
300
℃
302
～
572
℉
3.0% of rdg+2 digits
300
～
1000
℃
572
～
1832
℉
3.5% of rdg+5 digits
Overload protection: 36V DC/36Vrms AC
