RICHMETERS RM101 Digital Multimeter User Manual
- June 9, 2024
- RICHMETERS
Table of Contents
RICHMETERS RM101 Digital Multimeter
Introduction
RM 101 and RM 102 are battery powered, true rms, auto ranging digital multimeters with a 6000 counts, LCD display and backlight Unless specially indicated, this manual applies to the both models All figures show the RM 102
Safety Information
RM 101 /RM 102 are designed to comply with safety standards of EN 61010 1 Toavoid possible electrical shock, fire, or personal injury, please read all safetyinformation before you use the product
- Do NOT exceed the maximum value indicated in the Specification
- Examine the connection of the test leads and the insulation of the productbefore measuring voltage higher than 36 V DC or 25 V AC
- Disconnect the test leads from the circuit before changing the mode 。
- Misuse of mode or range can lead to hazards, be cautious ..“ will be shown on the display when the input is out of range
- Safety symbols
Specifications
| Electrical Specifications|
---|---|---
Function| Range| Resolution| Accuracy| MAX.Value| Other
DC Voltage
（V）
| 6.000V| 0.001V|
±(0.5%+3)
|
1000V
|
Input Resistance:10MΩ
60.00V| 0.01V
600.0V| 0.1V
1000V| 1V
DC Voltage
（mV）
| 60.00mV| 0.01mV| 600mV
600.0mV| 0.1mV
AC Voltage
（V）
| 6.000V| 0.001V|
±(1.0%+3)
|
750V
|
Input Resistance:10MΩ
（600mV range, ＞60MΩ Frequency Response: 40Hz-1kHz
60.00V| 0.01V
600.0V| 0.1V
750V| 1V
AC Voltage
（mV）
| 60.00mV| 0.01mV| 600mV
600.0mV| 0.1mV
DC Current
（A）
| 6.000A| 0.001A|
±(1.2%+3)
| 10A|
MAX.Current：10A（no more than 15 seconds） No Voltage input at this mode
Frequency Response(AC):
40Hz-1kHz
10.00A| 0.01A
DC Current
（mA）
| 60.00mA| 0.01mA| 600mA
600.0mA| 0.1mA
AC Current
（A）
| 6.000A| 0.001A|
±(1.5%+3)
| 10A
10.00A| 0.01A
AC Current
（mA）
| 60.00mA| 0.01mA| 600mA
600.0mA| 0.1mA
Function| Range| Resolution| Accuracy| MAX.Value| Other
---|---|---|---|---|---
Resistance
| 600.0Ω| 0.1Ω|
±(0.5%+3)
|
60MΩ
|
No Voltage input at this mode
6.000kΩ| 0.001kΩ
60.00kΩ| 0.01kΩ
600.0kΩ| 0.1kΩ
6.000MΩ| 0.001MΩ
60.00MΩ| 0.01MΩ| ±(1.5%+3)
Capacitance
| 9.999nF| 0.001nF| ±(5.0%+20)|
9.999mF
|
No Voltage input at this mode
99.99nF| 0.01nF|
±(2.0%+5)
999.9nF| 0.1nF
9.999μF| 0.001μF
99.99μF| 0.01μF
999.9μF| 0.1μF
9.999mF| 0.001mF| ±(5.0%+5)
Frequency
| 99.99Hz| 0.01Hz|
±(0.1%+2)
|
9.999MHz
|
999.9Hz| 0.1Hz
9.999kHz| 0.001kHz
99.99kHz| 0.01kHz
999.9kHz| 0.1kHz
9.999MHz| 0.001MHz
Duty Cycle| 1%~99%| 0.1%| ±(0.1%+2)| |
Diode| √(DC forward current is 5mA，voltage is 3V）| No Voltage input at this
mode
Continuity| √(no more than 50Ω)
Temperature (RM102 only)| (-20~1000)℃| 1℃| ±(2.5%+5）| 1000℃|
(-4~1832)℉| 1℉| 1832℉
General Specifications
| Display（LCD） | 6000 counts |
|---|---|
| Ranging | Auto |
| Material | ABS |
| Update Rate | 3 times/second |
| Ture RMS | √ |
| Data Hold | √ |
| Low Battery Indication | √ |
| Auto Power Off | √ |
Mechanical Specifications
| Dimension | 1306532mm |
|---|---|
| Weight | 130g(battery included) |
| Battery Type | 1.5V AAA Battery * 2 |
| Warranty | Three years |
| Environmental Specifications | |
| Operating | Temperature |
| Humidity | ＜75% |
| Storage | Temperature |
| Humidity | ＜80% |
Safety Specifications
EN 61010-1
Standard Accessories
a user manual， a pair of test leads， a pair of TP01K thermocouple probes(RM102
only)，color box packaging
Instruction
Front Panel see the picture on the right
- LCD display
- Buttons
- 2a: HOLD To hold the current reading, press this button and you will see “ on the display press again to cancel To turn on the backlight, press this botton for more than 2 seconds long press again to turn off
- 2b: SELECT To toggle between AC/DC, Diode/ Resistance/ Capacitance/ Continuity, or (RM 102 only), press this botton
- Rotary Switch To change mode or range 。(from OFF, clockwise)
- 3a; OFF
- 3b: AC/DC Voltage ( V)(Voltage V)
- 3c: AC /DC Voltage ( mV)(Voltage mV)
- 3d: Resistance/Continuity/Diode/ Capacitance
- 3e: Frequency/Duty Cycle
- 3f: AC/DC Current ( A)(Cureent A)
- 3g: AC/DC Current mA)mA)(Current mA)
- 3h: Temperature (RM 102 only)
- VΩHz: Input terminal for voltage, resistance, capacitance, frequency, temperature (RM 102 only), current ( continuity, diode, and duty cycle measurements
- COM: Common terminal for all measurements
- 10 A: Input terminal for current ( measurements )
Measure AC/DC Current
- Connect the black test lead to the COM Terminal and connect the red test lead to the V Ω Hz Terminal or the 10 A Terminal (choose based on the value ofcurrent)
- Turn the rotary switch to the Current A Mode or the Current mA Mode
- Press SELECT to toggle between AC/DC
- Break the circuit path to be measured Then connect the test leads across the break and apply power
- Read the measured current on the display
Caution
- Do not measure current that exceeds the MAX Value as indicated in the Specifications
- Use the 10 A Terminal and the Current A Mode when you are measuring an unknown current Then switch to the V Ω Hz Terminal and the Current mA Mode if necessary.
Do not input voltage exceeds 36V DC or 25V AC when you are at the setting of measuring current.
Measure AC/DC Voltage
- Connect the black test lead to the COM Terminal and connect the red test lead to the VΩHz Terminal
- Turn the rotary switch to the Voltage V Mode or the Voltage mV Mode
- Press SELECT to toggle between AC/DC
- Touch the probes to the correct test points of the circuit to measure the voltage
- Read the measured voltage on the display
Caution
- Do not measure voltage that exceeds the MAX Value as indicated in the Specifications
- Do not touch high voltage circuit during measurements
Measure Resistance
- Connect the black test lead to the COM Terminal and connect the red test lead totheVΩHz Terminal
- Turn the rotary switch to the Resistance Mode, and the display will show “
- Touch the probes to the desired test points of the circuit to measure the resistance
- Read the measured resistance on the display
Caution
- Disconnect circuit power and discharge all capacitors before you test resistance
- Do not input voltage at the Resistance Mode
Measure Continuity
- Connect the black test lead to the COM Terminal and connect the red test lead to the VΩHz Terminal
- Turn the rotary switch to the Resistance Mode, press SELECT once to toggle to the ContinuityMode
- Touch the probes to the desired test points of the circuit
- The built in beeper will beep when the resistance is lower than 50 Ω, which indicates a short circuit
Caution: Do not input voltage at the Continuity Mode
Measure Diode
- Connect the black test lead to the COM Terminal and connect the red test lead totheVΩHz Terminal
- Turn the rotary switch to the Resistance Mode, press SELECT twice to toggle to the Diode Mode
- Connect the red probe to the anode side and the black probe to the cathode sideof the diode being tested
- Read the forward bias voltage value on the display
- If the polarity of the test leads is reversed with diode polarity or the diode is broken,the display reading shows “
Caution
- Do not input voltage at the Diode Mode
- Disconnect circuit power and discharge all capacitors before you test the diode.
Measure Capacitance
- Connect the black test lead to the COM Terminal and connect the red test lead totheVΩHz Terminal
- Turn the rotary switch to the Resistance Mode, press SELECT three times to toggleto the Capacitance Mode
- Connect the red probe to the anode side and the black probe to the cathode sideof the capacitor being tested
- Read the measured capacitance value on the display once the reading is stablized
Caution: Disconnect circuit power and discharge all capacitors before you test capacitance
Measure Frequency and Duty Cycle
- Connect the black test lead to the COM Terminal and connect the red test lead to the VΩHz Terminal
- Turn the rotary switch to the Frequency Mode press SELECT once to toggle to the DutyCycle Mode if you want to measure duty cycle
- Touch the probes to the desired test points of the circuit
- Read the measured frequency/duty cycle value on the display
Caution: The Frequency Mode only applies to measure high frequency with low voltage.
Measure Temperature (RM102 only)
- Connect the black thermocouple probe to the COM Terminal and connect the red thermocouple probe to the V Ω Hz Terminal;
- Turn the rotary switch to the Temperature Mode, and the display will show the room temperature, to toggle between ℃℃//℉℉, press SELECT
- Touch the probes to the desired test points;
- Read the measured temperature on the display.
Caution: Do not input voltage at the Temperature Mode.
Auto Power Off
- The product automatically powers off after 15 minutes of inactivity;
- The built in beeper beeps 5 times 1 minute before power off;
- To restart the product, press SELECT botton;
- To disable the Auto Power Off function, hold down the SELECT botton when turning on the product, you will hear five beeps if you have successfully disabled the function.
General Maintenance
Beyond replacing batteries and fuses, do not attempt to repair or service the product unless you are qualified to do so and have the relevant calibration, performance test, and service instructions
- Do not operate the product around hot, wet, flammable, explosive or magnetic environments
- Clean the product with damp cloth and mild detergent do not use abrasives or solvents
- Remove the input signals before you clean the product
- Remove the batteries if you will not use the product for a long time to prevent possiblebattery leak
- When is shown on the display, batteries shall be replaced as below
- Loosen the screw and remove the battery cover
- Replace the used batteries with new batteries of the same type
- Place the battery cover back and fasten the screw
- Replace fuses as above steps Use only fuses of the same type as the original ones.
Warning
- Do NOT exceed the “maximum value” indicated in the Specification;
- Do NOT input voltage at the Current Mode, the Resistance Mode, the Diode Mode, the Continuity Mode, or the Temperature Mode;
- Do NOT use the product when the batteries or the battery cover is not placed properly;
- Turn off the product and remove the test leads from the test points before changing batteries or fuses.
Troubleshooting
If your product do not function as normal, the following steps may help you. If the problem still cannot be solved, please contact your dealer.
| Problem | Possible Reason |
|---|---|
| Display Malfunction | Low battery; replace batteries |
| Symbol | Replace batteries |
| No current input | Replace fuse |
LIMITED WARRANTY AND LIMITATION OF LIABILITY Customers
enjoy one year exchange, three year warranty from the date of purchase This warranty does not cover fuses, disposable batteries, or damage from an accident, neglect, misuse, alternation, contamination, or abnormal conditions of operation or handling All rights reserved. Specifications are subject to change without notice.