HoldPeak 870CR User manual

HOLDPEAK
870CR
OPERATION MANUAL
This LCD Auto Range & Auto Power off Digital AC/DC clamp
multimeter is a portable, 3 3/4-digit multimeter. It is ideally suited
for field, laboratory, shop and home applications.
1. SAFETY INFORMATION
The following safety information must be observed to insure
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.
4) Before making resistance measurements, diode or continuity
test, capacitance test or temperature test, ensure that the circuit
under test isde-energized.
5) Always ensure that the correct function and range is selected.
6) Extreme care should be taken when using the instrument to
conjunction with a current transformer connected to the terminals
if an open circuit occurs.
7) Ensure that the test leads and probes are in good condition
with no damage to the insulation.
8) Take care not to exceed the over-load limits as given in the
specifications.
9) 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.
10) Keep the fingers after the protection ring when measuring
through the instrument lead.
11) 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.
2) D.HOLD/ Back Light 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 HOL and the " H" symbol disappear.
Press “D.HOLD”button more than 2 seconds, the back light will light,
press it more than 2 seconds again, the back light will light off.
3) SELECT key: This key work on the "CAP Ω" range only.
Push the key to choose resistance, diode or continuity test.
4) RANGE key：Push the key to select manual mode, push it
again to change the range, press the key for more than 2
seconds to go back auto range mode. But in Hz/Duty and
Capacitance measurement, it can not select manual range mode.
5) Hz/DUTY key：In Hz range, push the key, you can measure the
duty, push again, go back to Hz measurement. In voltage
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.
6）REL key：Push the key, the present display value will be stored in
memory, then the newdisplay value is the difference between input
value and stored data. In Hz/Duty measurement, it can not work.
7) LCD Display：LCD Dual Display, facilitates reads the data.
8)T+V Ω Input Jack 、COM Input Jack、T- Input Jack
2. SPECIFICATIONS
2.1 GENERAL SPECIFICATIONS
Display: 3 3/4 digit LCD with a max. reading of 3999.
Range control: Auto range control.
Polarity: Automatic negative polarity indication.
Zero adjustment: Automatic.
Over range indication: Only the "OL" display.
Lowbattery:The" " is displaywhenthe batteryvoltage is below7.2V.
Auto Power Off: 30 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.
Clamp opening size: 45mm.
Operating Environment: Temperature 32～104°F(0～40℃),
humidity＜80%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 batteries).
2.2 ELECTRICAL SPECIFICATIONS
Accuracies are ±(% of reading +number in last digit) at 23±5℃,
≤70%RH.
2.2.1 DC Voltage
Range
Accuracy
Resolution
400mV
0.8% of rdg+5digits
0.1mV
4V
1.0% of rdg+5digits
1mV
40V
10mV
400V
100mV
1000V
1.5% of rdg+5 digits
1V
Overload protection: 1000V DC/750Vrms AC
Impedance: 10MΩ，More than 100MΩon 400mV scale
2.2.2 AC Voltage
Range
Accuracy
Resolution
Frequency
4V
1.5% of rdg+5 digits
1mV
50～400Hz
40V
10mV
400V
100mV
750V
2.5% of rdg+5 digits
1V
50～100Hz
Average sensing, calibrated to rms of sine wave
Overload protection: 1000V DC/750Vrms AC;Impedance: 10MΩ.
2.2.3 DC Current
Range
Accuracy
Resolution
Frequency
200A
3.0% of rdg+10 digits
0.1A
-
1000A
0～800
3.5% of rdg+10 digits
1A
800～1000
6.5% of rdg+10 digits
Overload protection: 1000Arms within 60 seconds
2.2.4 AC Current
Range
Accuracy
Resolution
Frequency
400A
3.0% of rdg+10 digits
0.1A
50～
400Hz
1000A
0～800
3.5% of rdg+10 digits
1A
800～1000
6.5% of rdg+10 digits
Average sensing, calibrated to rms of sine wave
Overload protection: 1000Arms within 60 seconds
2.2.5AC Voltage(True RMS)
Range
Resolution
Accuracy
Sensitivity
400mV
0.1mV
±2.0% of rdg+15 digits
40Hz-1kHz
4V
1mV
±1.2% of rdg+10 digits
40Hz-1kHz
40V
10mV
±1.2% of rdg+10 digits
40Hz-10kHz
400V
100mV
±1.0% of rdg+10 digits
40Hz-400Hz
750V
1V
±1.0% of rdg+10 digits
40Hz-400Hz
1. Input impedance : > 10MΩOhm ACV True RMS.
2. Overload protect : 1000V DCV or ACV peak value.
3. Press “Range”button for select ACV 400mV range.
2.2.6 Resistance
Range
Accuracy
Resolution
400Ω
1.5% of rdg+15 digits
0.1Ω
4kΩ
1.2% of rdg+15 digits
1Ω
40kΩ
10Ω
400kΩ
100Ω
4MΩ
1kΩ
40MΩ
2.5% of rdg+15 digits
10kΩ
Overload protection: 250V DC/250Vrms AC
2.2.7 Capacitance
Range
Accuracy
Resolution
40nF
6.0% of rdg+10 digits
10PF
400nF
3.5% of rdg+5 digits
100PF
4μF
1nF
40μF
10nF
100μF
6.0% of rdg+10 digits
100nF
Overload protection: 250V DC/250Vrms AC
2.2.8 Frequency
Range
Accuracy
Resolution
Sensitivity
10Hz
1.2% of rdg+10 digits
0.01Hz
Range of input
voltage:1.5V~1
0V, If input
voltage over
range, need
adjust
100Hz
0.1Hz
1000Hz
0.8% of rdg+5 digits
1Hz
10kHz
10Hz
100kHz
100Hz
1000kHz
1kHz
10MHz
2.0% of rdg+10 digits
10kHz
Overload protection: 250V DC/250Vrms AC

2.2.9 Temperature(NiCr-NiSi sensor)
Range Accuracy Resolution
℃-20～150℃3℃+2 1℃ 150～300℃3.0% of rdg+2 digits 1℃
300～1000℃3.5% of rdg+10 digits 1℃
Overload protection: 36V DC/36Vrms AC
2.2.10 Diode and Audible continuity test
Overload protection: 250V DC/250Vrms AC
3. MEASURING INSTRUCTION
3.1 DC Voltage measurement
1) Connect the black test lead to "COM" socket and red test lead
to the "VΩ" socket.
2) Set the selector switch to desired "mV " or "V " position and
connect the probes across the source or load under
measurement.
3) Read the result from the LCD panel.
3.2AC Voltage measurement
1) Connect the black test lead to "COM" socket and red test lead
to the " VΩ" socket.
2) Set the selector switch to desired "V～" position and
connect the probes across the source or load under
measurement.
3) Read the result from the LCD panel.
3.3 DC Current Measurement
1) Set the selector switch to desired "200 “or "1000A "
position.
2) Press the "REL" the display show "0".
Note:
As the jaw core may remain some magnetic force after using for
a while. If the display can not reach "0" When Press the "REL”,
please take following process to correct it:
A. To change the direction of the measured DC current.
B. Open the JAWS several times.
3) Open the clamp by pressing the jaw-opening handle and
insert the cable to be measured into the jaw.
4) Close the clamp and get the reading from the LCD panel.
5) Push the D.HOLDbutton to lockdisplay value, push it again to exit.
6) Push the LIGHT button to light the back light.
Note:
Before this measurement, disconnect the test lead with the meter
for safety.
3.4AC Current measurement
1) Set selector switch to desired "400/1000A～" position.
2) Open the clamp by pressing the jaw-opening handle and insert
the cable ( one cable only) to be measured into the jaw.
3) Close the clamp and get the reading from the LCD panel.
Note:
a) Before this measurement, disconnect the test lead with the
meter for safety.
b) In same occasion that the reading is hard to read, push the
D.HOLD button and read the result later.
3.5 Resistance measurement
1) Connect the black test lead to "COM" socket and red test lead
to the " VΩ" socket.
2) Set the selector switch to desired "Ω" position, the present
function is resistance measurement, if it is other function, push
the SELECT to select resistance measurement.
3) Connect the probes across circuit to be tested.
4) Read the result from the LCD panel.
Caution: Ensure that the circuit to be tested is "dead".
Max. input over-load: 250V rms＜10sec
3.6 Capacitance measurement
1) Connect the black test lead to "COM" socket and red test lead
to the " VΩ" socket.
2) Set the selector switch to desired "CAP" position.
3) Connect the probes to the capacitance to be tested.
4) Read the result from the LCD panel.
Caution:
a) Capacitors should be discharged before being tested.
b) This device adopts charging mode to measure capacitance,
so when testing large capacitance, it will take longer time before
the final indication, and the larger capacitor, the longer the time
(For 100uF range, it will take about 15 seconds).
c) When testing small capacitance, to assure the measurement
accuracy, first press "REL", then go on measuring.
3.7 Frequency measurement
1) Connect the black test lead to "COM" socket and red test lead
to the " VΩ" socket.
2) Set the selector switch to desired "Hz" position.
3) Connect the probes to the point of measurement and read the
frequency from the display.
Max. input over-load: 250V rms＜10sec
3.8 Temperature measurement
1) Connect the black test lead of the sensor to "T-" socket
and the red test lead to the "T+" socket.
2) Set the selector switch to "℃" position.
3) Put the sensor probe into the temperature field under
measurement.
4) Read the result from the LCD panel.
Max. input over-load: 250V rms＜10sec
A. The temperature function shows the random number at
ordinary times, must insert the thermocouple in temperature test
hole while examining temperature.
B. This meter inclosure WRNM-010 type contact thermocouple
limit temperature is 250 ℃(300 ℃shortly ) ;
C. Please don't change the thermocouple at will , otherwise we
can't guarantee to measure accuracy ;
Please don’t importing the voltage in the temperature function.
D. Please use special probe for test high temperature.
3.9 Diode test
1) Connect the black test lead to "COM" socket and red test lead
to the " VΩ" socket.
2) Set the selector switch to " " position.
3) Push "SELECT" to select diode test.
4) Connect the black and red test probe to the cathode (-)
and anode (+) ends of diode to be tested
respectively, read the forward voltage drop (junction) value
from the display. If reverse connected the probes to diode,
display shows over-load.
Caution: Ensure that the circuit to be tested is "dead".
Max. input over-load: 250V rms＜10sec
3.10 Audible continuty test
1) Connect the black test lead to "COM" socket and red test lead
to the "VΩ" socket.
2) Set the selector switch to " " position.
3) Push "SELECT" to select audible continuty test.
4) Connect the probes across circuit to be tested, the beeper
sounds continuously if the resistance is less than approx. 50Ω.
Caution: Ensure that the circuit to be tested is "dead".
Max. input over-load: 250V rms＜10sec
3.11 Relative measurement
Press "REL", you can measure the relative value and "REL"
appears on the display, the auto range mode be changed to
manual range mode. Press again, return to the previous
condition and "REL" disappears, but you can not go back to
auto range mode. In” Hz” measurement, you can not measure
the relative value.
4. CARE AND MAINTENANCE
4.1 CARING FOR YOUR MULTIMETER
Your Digital Multimeter is an example of superior design and
craftsmanship. The following suggestions will help you care for
the multimeter so you can enjoy it for years.
1) Keep the multimeter dry. If it gets wet, wipe it dry immediately.
Liquids can contain minerals that can corrode electronic circuits.
2) Use and store the multimeter only in normal temperature
environments. Temperature extremes can shorten the life of
electronic devices, damage batteries and distort or melt plastic parts.
3) Handle the multimeter gently and carefully. Dropping it can
damage the circuit boards and cause and can accuse the
multimeter to work improperly.
4) When take current measurement, keep the cable at the center
of the clamp will get more accurate test result.
5) Keep the multimeter away from dust and dirt, which can cause
premature wear of parts.
6) Wipe the mutimeter with a damp cloth occasionally to keep it
looking new. Do not use harsh chemicals, cleaning solvents, or
strong detergents to clean the multimeter.
7) Use only fresh batteries of the required size and type. Always
remove old or weak batteries. They can leak chemicals that
destroy electronic circuits.
8) Please take out the battery when not using for a long time.
4.2 9Volt battery replacement
1) Ensure the instrument is not connected to any extemal circuit.
Set the selector switch to "OFF" position and remove the test
leads from the terminals.
2) Open the cover of the battery cabinet by a screwdriver.
3) Replace the old batteries with the same type batteries.
4) Close the battery cabinet cover and fasten the screw.
Range Description Test condition
“Display read approx.
Forward voltage of
diode.
Forward DC current
approx. 0.4mA
Reversed DC voltage
approx. 1.5V
”Built-in buzzer sounds
if resistance is less
than 90ΩOpen circuit voltage
approx. 0.5V