VOLTCRAFT 2268246 VC190 Digital Multimeter Instruction Manual

Operating Instructions
VC190 Digital multimeter
**Item No. 2268246

**

Introduction

Dear customer,
Thank you for purchasing this product.
This product complies with the statutory national and European requirements.
To maintain this status and to ensure safe operation, you as the user must observe these operating instructions!
These operating instructions are part of this product. They contain important notes on commissioning and handling. Also, consider this if you pass on the product to any third party. Therefore, retain these operating instructions for reference!
If there are any technical questions, please contact: www.conrad.com/contact

Explanation of symbols

** The symbol with the lightning in the triangle is used if there is a risk to your health, e.g. due to an electric shock.
The symbol with the exclamation mark in the triangle is used to indicate important information in these operating instructions. Always read this information carefully.
→** The arrow symbol indicates special information and advice on operation.
This device is CE-compliant and meets applicable European directives.
Protection class 2 (double or reinforced insulation, protective insulation).
Earth ground
CAT I Measuring category I for measurements on  electrical and electronic devices that are not directly supplied with mains voltage (e.g. battery- powered devices, protective low
voltages, signal and control voltages, etc.).
CAT II Measuring category II for measurements on electrical and electronic devices connected to the mains supply directly with a mains plug. This category also covers all lower categories (e.g. CAT I for measuring signal and control voltages).
CAT III Measuring category III for measuring building installations (e.g. outlets or subdistribution). This category also covers all lower categories (e.g. CAT II for measuring electronic devices). Measuring operation in CAT III is only permitted with measuring probes with a maximum free contact length of 4 mm or with cover caps above the measuring probes.

Intended use

The product is intended to be used like a digital multimeter (DMM), and measured values are shown on a digital display. The DMM can be used for professional, industrial, and do-it-yourself applications up to CAT III. It is intended for indoor use only. Contact with moisture must be avoided under all circumstances.
For safety and approval purposes, you must not rebuild and/or modify this product. If you use the product for purposes other than those described above, the product may be damaged. In addition, improper use can result in short circuits, fires, electric shocks, or other hazards. Read the instructions carefully and store them in a safe place. Make this
product available to third parties only together with its operating instructions.
All company names and product names are trademarks of their respective owners. All rights reserved.

Delivery content

• Digital multimeter
• Test leads (pair)
• Point contact temperature probe
• 9 V block battery
• Safety information
• Operating instructions (on CD-ROM)

Up-to-date operating instructions

Download the latest operating instructions at www.conrad.com/downloads or scan the QR code shown. Follow the instructions on the website.

http://www.conrad.com/downloads

Features and functions

• AC / DC voltage measurement
• AC / DC current measurement up to 10 A.
• Duty cycle
• Diode test
• Acoustic continuity tester
• Hold function
• Auto power off.| • Automatic display backlight
• Peak reading (PEAK)
• 6000 counts
• True RMS
• Auto range
• 600 V high-performance fuses
• CAT III 600 V measuring category
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Safety instructions

Read the operating instructions carefully and especially observe the safety information. If you do not follow the safety instructions and information on proper handling in this manual, we assume no liability for any resulting personal injury or damage to property. Such cases will invalidate the warranty/guarantee.

a) General information

• The device is not a toy. Keep it out of the reach of children and pets.

• Do not leave packaging material lying around carelessly. This may become dangerous playing material for children.

• Protect the appliance from extreme temperatures, direct sunlight, strong jolts, high humidity, moisture, flammable gases, steam, and solvents.

• Do not place the product under any mechanical stress.

• If it is no longer possible to operate the product safely, take it out of operation and protect it from any accidental use. Safe operation can no longer be guaranteed if the product:
  – is visibly damaged,
  – is no longer working properly,
  – has been stored for extended periods in poor ambient conditions or
  – has been subjected to any serious transport-related stresses.

• Please handle the product carefully. Jolts, impacts, or a fall even from a low height can damage the product.

• Consult an expert when in doubt about the operation, safety, or connection of the appliance.

• Maintenance, modifications, and repairs must only be completed by a technician or an authorized repair center.

• If you have questions that remain unanswered by these operating instructions, contact our technical support service or other technical personnel.

• In commercial institutions, the accident prevention regulations of the Employer’s Liability Insurance Association for Electrical Systems and Operating Materials are to be observed.

•  In schools, training centers, and computer and self-help workshops, the handling of meters must be supervised by trained personnel in a responsible manner.

b) Connected devices

• Observe the safety and operating instructions of any other devices which are connected to the product.

c) Fuse

• A defective fuse must be replaced with a new fuse with the same specifications. Do not repair or bridge a defective fuse, as this may cause a fire or result in fatal electric shock!

d) (Rechargeable) batteries

• Correct polarity must be observed while inserting the (rechargeable) battery.
• The (rechargeable) batteries should be removed from the device if it is not used for a long period of time to avoid damage through leaking. Leaking or damaged (rechargeable) batteries might cause acid burns when in contact with skin, therefore use suitable protective gloves to handle corrupted (rechargeable) batteries.
• (Rechargeable) batteries must be kept out of reach of children. Do not leave (rechargeable) batteries lying around, as there is a risk, that children or pets swallow them.
• All (rechargeable) batteries should be replaced at the same time. Mixing old and new (rechargeable) batteries in the device can lead to (rechargeable) battery leakage and device damage.
• (Rechargeable) batteries must not be dismantled, short-circuited, or thrown into the fire. Never recharge non-rechargeable batteries. There is a risk of explosion!

e) Multimeter

• Do not switch the meter on after it has been taken from a cold to a warm environment. The condensation that forms might destroy the device. Allow the device to reach room temperature before switching it on.
• Check that the multimeter is set to the correct function before each measurement.
• To avoid electric shock, do not touch the connections/measuring points directly or indirectly during measurement. Check the meter for damage before each measurement. Never carry out any measurements if the protecting insulation is defective (torn, ripped off, etc.)
• Do not use them during thunderstorms.
• Never operate the product in direct proximity of strong magnetic or electromagnetic fields or transmitter aerials or HF generators. This could affect the measurement.
• For accurate measurements, replace the battery when the low battery symbol appears on the display.
• Pay attention to the information besides the warning signs ****at the test lead terminals. The measured voltage or current must not exceed the values shown!
• Never operate the meter when the case is open. !DANGER TO LIFE!

f) Probes

• The probe cables have a wear indicator. When damaged, a second insulation layer in a different color becomes visible. The measuring accessories must no longer be used and must be replaced.
• During measuring, do not grip beyond the grip range markings indicated on the measuring probes.
• When using the measuring probes without cover caps, measurements between the meter and the earth potential must not be performed above the measuring category CAT II.
• When measuring in the measuring category CAT III. Measuring probes with cover caps (max. 4 mm free contact length) must be used to avoid accidental short circuits during measurement. They are enclosed.
• The measuring probes must be removed from the measured object each time the measuring function is changed.
• The voltage between the connection points of the meter and the earth potential must not exceed 600 V DC/AC in CAT III.
• Risk of fatal electric shock! Be careful when dealing with voltages higher than 33 V/AC or 70 V/DC.

Operating elements

a) Overview

A 10 A max terminal
B RANGE button
C SEL/PEAK button
D Auto-backlight sensor
E Display
F HOLD/MAX MIN button| G Function dial
H terminal
I COM terminal
J Battery compartment cover
K Fold-out stand
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b) Dial

• Adjust the dial to choose a function.
• Automatic range selection “Auto” is active for most measuring functions.
• Some functions have sub-functions, these are marked in red and can be accessed by pressing the SEL/PEAK button.
• Always set the dial to “OFF” when not in use.

Display and symbols

Insert/replace batteries

****Before opening the rear cover, switch off the power supply and disconnect the test leads from the input terminals and the circuit.

1. When the battery voltage is ≤6 V ± 0.2 V, the low battery symbol will be displayed.
2. Turn the function dial to the “OFF” position, and remove the test leads from the input terminals.
3. Unscrew and remove the battery cover to replace the battery.

Operation

Replace the battery if the low battery warning shows. Pay attention to the information besides the warning signs marked on the DMM beside the test lead terminals. The measured voltage or current must not exceed the values shown!
Test on known voltages to verify that the DMM is functioning correctly.
For accurate measurement results, make sure the probe tips and any areas of contact are free from debris or residue.
a) Power ON

• Turn ON: Set the function dial to the corresponding measurement function.
• Turn OFF: Set the function dial to “OFF”. Always turn the meter off when it is not in use.

b) DC/AC voltage Measurement

→ The input impedance is approximately 10 MΩ and will not put much strain on the circuit.

1. Set the function dial to the required setting:
   • DC voltage measurement (V ), “DC” will show on the display.
   – Short press RANGE to toggle through ranges (indicated by decimal position).
   • AC voltage measurement (V ∼ ), “AC” will shoe on the display.
   – Short press RANGE to toggle through ranges (indicated by decimal position).

2. Connect the test leads to the terminals:
   – Red test lead to the terminal.
   – Black test lead to the COM terminal.

3. Connect the test lead probes to the correct test points in the circuit:
   – Red: Positive polarity “ + ”.
   – Black: Negative polarity “ – ”.

4. Read the voltage values on the display.
   – DC voltage measurements (V ): If a minus “ – ” sign appears in front of the value, the measured voltage is negative (or the measuring lines are swapped).
   – AC voltage measurements are given in true RMS.
   A warning will sound when measured values are out of range >600 V.

5. When finished measuring, disconnect the test leads and switch the power OFF.5. When finished measuring, disconnect the test leads and switch the power OFF.
   

c) LoZ AC voltage measurement
The LoZ measuring function permits alternating “AC” voltage measurements with low impedance (approx. 300 kΩ).
The lower internal resistance of the meter reduces measurement discrepancies such as phantom voltages.
→ The input impedance is approximately 300 kΩ and will put some strain on the circuit.

1. Set the function dial to LoZ V ∼.

2. Connect the test leads to the terminals:
   – Red test lead to the terminal.
   – Black test lead to the COM terminal.

3. Connect the test lead probes to the correct test points in the circuit:
   – Red: Positive polarity “ + ”.
   – Black: Negative polarity “ – ”.

4. Read the voltage values on the display.
   – The displayed value is true RMS.
   – Wait for 3 minutes before the next operation.

5. When finished measuring, disconnect the test leads and switch the power OFF

d) Resistance measurement (Ω)

**** Make sure all circuit parts, circuits, components, and other objects of measurement are disconnected from the voltage supply and fully discharged.

1. Set the function dial to .

2. Short press the SEL button 4x to select resistance measurement, “ Ω ” will show on the display.

3. Short press RANGE to toggle through ranges (indicated by decimal position).

4. Connect the test leads to the terminals:
   – Red test lead to the terminal.
   – Black test lead to the COM terminal.

5. Connect the test lead probes to the correct test points in the circuit:
   – Red: Positive polarity “ + ”.
   – Black: Negative polarity “ – ”.
   → Check the lines for continuity by connecting the two test leads. The impedance value should be ≤ 0.5 Ω (inherent impedance of the measuring lines). If the value is ≥ 0.5 Ω, check the terminal connections or if there is any damage.

6. Read the voltage values on the display.
   – “OL” will appear on the display if the maximum range is exceeded or if the circuit is open.
   – When measuring high resistance, it is normal to take a few seconds for readings to stabilize.

7. When finished measuring, disconnect the test leads and switch the power OFF

e) Continuity test ( )
** Make sure all circuit parts, circuits, components, and other objects of measurement are disconnected from the voltage supply and fully discharged.
**

1. Set the function dial to .

2. Short press the SEL button 3x to select the continuity test, “Ω ****” will show on the display.

3. Connect the test leads to the terminals:
   – Red test lead to the terminal.
   – Black test lead to the COM terminal.

4. Connect the test lead probes to the correct test points in the circuit.

5. A resistance of ≤ 30 Ω is considered continuity, and a beep will sound.
   – The measuring range is ≤ 600 Ω.
   – “OL” will appear on the display if the maximum range is exceeded or if the circuit is open.

6. When finished measuring, disconnect the test leads and switch the power OFF.

f) Diode test ( )

**** Make sure all circuit parts, circuits, components, and other objects of measurement are disconnected from the voltage supply and fully discharged.
The test voltage is approximately 3V.

1. Set the function dial to .

2. Short press the SEL button 2x to select diode test, “ ” will show on the display.

3. Connect the test leads to the terminals:
   – Red test lead to the terminal.
   – Black test lead to the COM terminal.

4. Check the lines for continuity by connecting the two test leads. The value should be approximately 0.000 V.

5. Connect the test lead probes to the correct test points on the diode.
   – “OL” will appear on the display if the polarity is reversed or if the circuit is open.
   – The normal PN junction forward voltage is approx. 500 to 800 mV.

6. When finished measuring, disconnect the test leads and switch the power OFF.

g) Capacity measurement

**** Make sure all circuit parts, circuits, components, and other objects of measurement are disconnected from the voltage supply and fully discharged.
Always observe polarity with electrolyte capacitors.

1. Set the function dial to .

2. Short press the SEL button 1x to select a capacity measurement, “nF” unit or capacitance will show on the display.

3. Connect the test leads to the terminals:
   – Red test lead to the terminal.
   – Black test lead to the COM terminal.

4. Connect the test lead probes to the correct test points on the capacitor.
   – Always observe the polarity with electrolyte capacitors.
   – “OL” will appear on the display if the polarity is reversed or if the circuit is shorted.
   – Wait until the displayed value has stabilized. This may take a few seconds for capacities >40 µF.

5. When finished measuring, disconnect the test leads and switch the power OFF.

h) Frequency ( >10 Hz) / duty ratio measurement (%)

This measuring function is not suitable for measuring mains current!
The DMM can be used to measure and indicate signal voltage frequencies up to 1 MHz.
The maximum input amplitude is 30 Vrms.
Please observe the input values in the technical data.

1. Set the function dial to Hz%, and Hz will appear on the display.

2. Short press the SEL button to switch between frequency “Hz” and duty ratio “%” measurement.
   → Frequency measurements: Short press RANGE to toggle through ranges (indicated by decimal position).

3. Connect the test leads to the terminals:
   – Red test lead to the terminal.
   – Black test lead to the COM terminal.

4. Connect the test lead probes to the correct test points in the circuit.
   → Duty ratio: The pulse duration of the positive half-wave is displayed as a percentage. 50% is displayed for a symmetrical signal.

5. When finished measuring, disconnect the test leads and switch the power OFF.

i) Temperature measurement
Do not get the temperature probe wet!

1. Set the function dial to °C°F.

2. Short press the SEL button to select a unit of measurement, “°C” or “°F” will show on the display.

3. Connect the K-type thermocouple to the terminals.
   – “TEMP + ” plug to the terminal.
   – “COM – ” plug into the COM terminal.

4. Measure the temperature at the probe tip.
   – “OL” will appear on the display when the DMM is turned on.
   – The measured temperature should be < 400 °C / 752 °F (°F = °C × 1.8 + 32)

5. When finished measuring, disconnect the test leads and switch the power OFF.

This measuring function is suitable for measuring mains current.
To prevent possible electric shock, fire, or personal injury, switch off the power supply of the circuit and then connect the DMM to the circuit in series before measuring the current.
If the range of the measured current is unknown, always start at the highest measurement range and switch down to lower ranges if needed.
There are fuses inside “10 A” and “mA μA” input terminals. Do not connect the test leads to circuits in parallel.
A warning will sound when measured values are out of range >10 A.
Measuring >5 A must only be performed for max. 30 seconds and at 15-minute intervals.

1. Set the function dial to the corresponding unit of measurement that will appear on the display.

2. Short press the SEL button to cycle through “DC”, “AC”, “Hz”.

3. Connect the test leads to the terminals:
   – Red test lead to the or 10A max terminal.
   – Black test lead to the COM terminal.

4. Connect the test lead probes to the circuit in series.

5. Read the value on the display.
   – DC current: The polarity is shown together with the measured value.
   – AC current: Values are given in true RMS.
   – Frequency: Measuring range is 40 to 400 Hz (input amplitude ≥ range × 50 %).

6. When finished measuring, disconnect the test leads, power the circuit down, and switch the DMM power OFF

Additional functions

Button press:
Short press = <2 sec.
Long press = Press and hold >2 sec.
a) Access sub-functions
Several measuring functions are assigned sub-functions and are marked in red around the function dial. Short press the SEL button to cycle through each sub-function.
b) Range
Pressing the RANGE button will switch the DMM from the automatic “Auto” range to the manual range.
This mode is only applicable with the following functions:
• Enter manual range: Short press the RANGE button.
– “Auto” will disappear from the display.
– Short press RANGE to toggle through ranges (indicated by decimal position).
• Exit manual range: Long press the RANGE button or rotate the function dial, “Auto” will appear on the display.

c) Hold
The hold function keeps the indicated value on the display so you have more time to read or record it.
****If you test live wires, make sure this function is deactivated before the measurement starts. Otherwise, the measurement will not be correct.

• Short press the HOLD button to activate/deactivate the hold.
• The H a symbol will appear to indicate that the hold is active.

d) Peak

• This function allows users to capture faster signal events than the normal min/max function. Input changes of 1 millisecond or longer will be recorded.
• This mode is only available with the following functions:
• Long press the PEAK button to enter/exit peak value mode.
• Short press the PEAK button to cycle through “P-MAX” and “P-MIN” values.

e) Maximum / Minimum

This function permits the saving and display of maximum or minimum values during a series of measurements. The auto range will be deactivated.

• This mode is only applicable with the following functions:

• Select the proper range before selecting MAX MIN to ensure that the MAX MIN reading will not exceed the
  measurement range.

• The values are taken from the time MAX MIN mode was entered. Input changes of 100 milliseconds or longer will be recorded.

• Long press the MAX MIN button to enter/exit maximum and minimum measurement mode.

• Short press the MAX MIN button to cycle through measurements:
  – Maximum value: MAX will show on the display.
  – Minimum value: MIN will show on the display.

f) Automatic power off
Automatic power-off is an energy-saving feature. When activated, the power will turn off if there is no activity is detected for approximately 15 mins. Press any button or adjust the function dial to wake.

Disable auto-power off

1. Set the function dial to the OFF position.
2. While pressing and holding the SEL/PEAK button, turn the function dial to any position.
3. The symbol will disappear.

Activate auto-power off

• Restart the device by setting the function dial OFF and then ON again.
• The symbol will show.

g) Automatic backlight
When ambient light levels fall below a certain threshold, the backlight automatically turns ON (duration: 30 secs). In bright circumstances, the backlight automatically turns OFF.

Replacing the Fuse

**** Never operate the meter if the case is open. !DANGER TO LIFE!

1. Turn the function dial to the “OFF” position.
2. Remove the test leads from the input terminals.
3. Unscrew then remove the battery cover.
4. Unscrew the rear cover screws.
5. Replace the fuse with one that is of the same type and specification. Refer to the section “Technical data” for further information.
6. Carefully replace the covers.

Troubleshooting

the probe leads.
Is the HOLD function activated?| Deactivate the HOLD function.
No measurement is possible in the A measurement range| Is the fuse of the A measuring range defective?| Check the 10 A F2 fuse
No measurement is possible in the mA/µA measurement range| Is the fuse of the mA/µA measurement range defective?| Check the 0.6 A F1 fuse.

Cleaning and maintenance

a) Cleaning

**** Do not use aggressive cleaning agents, rubbing alcohol, or other chemical solutions as they can cause damage to the housing and malfunction.

• Disconnect the product from the mains before each cleaning.
• Clean the product with a dry, fiber-free cloth.
• If there is any malfunction, stop using the meter and send it for maintenance. Maintenance and service must only be carried out by qualified professionals.

b) Maintenance

• The DMM should be calibrated once a year for maximum accuracy.
• The DMM does not require maintenance other than battery and fuse replacement.
• Check the device and measuring lines for signs of wear and damage.

Disposal

a) Product

Electronic devices are recyclable waste and must not be disposed of in the household waste. At the end of its service life, dispose of the product in accordance with applicable regulatory guidelines.
Remove any inserted (rechargeable) batteries and dispose of them separately from the product.

b) (Rechargeable) batteries

You as the end-user are required by law (Battery Ordinance) to return all used (rechargeable) batteries. Disposing of them in household waste is prohibited.
Contaminated (rechargeable) batteries are labeled with this symbol to indicate that disposal of domestic waste is forbidden. The designations for the heavy metals involved are Cd = Cadmium, Hg = Mercury, Pb = Lead (name on (rechargeable) batteries, e.g. below the trash icon on the left).

Used (rechargeable) batteries can be returned to collection points in your municipality, our stores, or wherever (rechargeable) batteries are sold.
You thus fulfill your statutory obligations and contribute to the protection of the environment.

Technical data

a) General

Voltage supply …………………………………………..9 V block battery (6F22, NEDA 1604 or same)
Operating time/battery ………………………………..approx. 120 h (without backlight)
Measuring impedance ………………………………..approx. 10 MΩ (600 mV: ≥1000 MΩ)
Display range …………………………………………….6000 counts (characters)
Refresh rate ………………………………………………2-3x per sec
Temperature measurement …………………………-40 to +400 °C (-40 to 752 °F)
Measuring method AC ………………………………..True RMS
Measuring line length …………………………………each approx. 80 cm
Low battery indicator ………………………………….≤6 V ±0.2 V
Measuring jacks distance ……………………………19 mm (COM-V)
Auto power off …………………………………………..approx. 15 minutes
Data hold ………………………………………………….approx. 15 minutes
Measuring category ……………………………………≤ CAT III 600 V
Degree of contamination …………………………….2
Direct voltage …………………………………………….max. 600.0 V / DC
Alternating voltage ……………………………………..max. 600.0 V / AC
Direct current …………………………………………….max. 10.00 A / DC
Alternating current ……………………………………..max. 10.00 A / AC
Resistance ………………………………………………..max. 60 MΩ
Capacitance ………………………………………………max. 60 mF
Operating temperature ……………………………….0 to 40 °C
Storage temperature …………………………………..-10 to +50 °C
Operating/storage humidity ………………………… 0 ˚C to 30 ˚C: ≤75 % RH (non-condensing) 30 ˚C to 40 ˚C: ≤ 50 % RH (non-condensing)
Operating altitude ………………………………………max. 2000 m (above sea level)
Dimensions (W x H x D): …………………………….75 x 150.6 x 38 mm
Weight ……………………………………………………..approx. 221 g (without battery)

b) Fuses
F1 Fuse …………………………………………………… ø6 x 32 mm, 0.6 A H600 V FF Input terminal protection (μA, mA)
F2 Fuse …………………………………………………… ø6 x 25 mm, 10 A H600 V FF Input terminal protection (A)

c) Measurement tolerances
Accuracy: ± (% of reading + count) The accuracy is valid for one year at:

• Ambient temperature: +3 °C (± 5 °C), ≤75 %, RH non-condensing
• Operating temperature: 18 to 28 °C (±1 °C)
  A temperature coefficient applies outside of this temperature range: +0.1 x (specified accuracy) / °C.
  The measurement can be impaired when the device is operated within a high- frequency electromagnetic field.

d) Capacitance measurement

Overload protection: 600 V

e) Continuity ( ) and diode ( ) test

| **** 0.1Ω| • Open circuit: Resistance >100 Ω, no beep.
• Circuit with a good connection: Resistance ≤30 Ω, consecutive beeps.

| **** 1 mV| • Open circuit voltage: Approx. 3 V
• Silicon PN junction voltage: Approx. 0.5 to 0.8 V
Overload protection: 600 V

f) DC voltage measurement

• Input impedance: ≥1000 MΩ for mV range (short circuit allows ≤5 digits), approx 10 MΩ for other ranges.
• Input voltage: max. 600 V

g) AC voltage measurement

• Input impedance: approx. 10 MΩ.
• True RMS display.
• Frequency response: 40 – 400 Hz. LPF frequency response: 40 – 200 Hz.
• After using the LoZ function, please cool down the meter for 1 minute.
• Accuracy guarantee range: 5~100% of range, the short circuit allows least significant digit <10.
• The AC crest factor is ≤3.0 when measured at 3000 counts. The full range AC crest factor of 6000 counts is ≤1.5.
• Non-sinusoidal waveforms:
–    When the crest factor is 1.0 to 2.0, the accuracy must be increased by 4.0 %.
–    When the crest factor is 2.0 to 2.5, the accuracy must be increased by 5.0 %.
–    When the crest factor is 2.5 to 3.0, the accuracy must be increased by 7.0 %.
• Input voltage: max. 600 Vrms.

h) Resistance measurement (Ω)

Overload protection: 600 V

i) Frequency / duty ratio measurement

• Overload protection: 600 V
• Input amplitude a: (DC level = 0) ≤100 kHz: 200 mVrms ≤ a ≤ 30 Vrms >100 kHz – 1 MHz: 600 mVrms ≤ a ≤ 30 Vrms
• Duty ratio measurement is applicable to square waves with frequency ≤10kHz. 1 Vpp ≤ Input amplitude ≤ 30 Vpp.
Frequency ≤ 1 kHz, duty ratio: 10.0 % to 95.0 %.
Frequency > 1 kHz, duty ratio: 30.0 % to 70.0 %

j) DC current measurement

• When the measured current is >5 A, each measurement time should be ≤30 s and the rest interval should be ≥15 minutes.
• Overload protection:
– F1 Fuse: μA mA range, ø6 x 32 mm, 0.6 A H600 V FF(CE)
– F2 Fuse: 10A range, ø6 x 25 mm, 10 A H600 V FF (CE)

k) Temperature measurement

(1.4 % + 3 °C)
300 to 400 °C
°F| -40 to +752 °F| -40 to +572 °F| 0.2 to 2 °F| **±** (1.4 % + 5 °F)
572 to 752°F
• Overload protection: 600 V
• The K-type thermocouple is only suitable for measuring temperatures < 400 °C (752 °F).

l) AC current measurement

• When the measured current is >5 A, each measurement time should be ≤30 s and the rest interval should be ≥15 minutes.
• True RMS display.
• Frequency response: 40 – 400 Hz.
• Accuracy guarantee range: 5 – 100 % of range, the short circuit allows least significant digit <2.
• The AC crest factor is ≤3.0 when measured at 3000 counts. The full range AC crest factor of 6000 counts is ≤1.5.
• Non-sinusoidal waveforms:
– When the crest factor is 1.0 – 2.0, the accuracy must be increased by 4.0 %.
– When the crest factor is 2.0 – 2.5, the accuracy must be increased by 5.0%.
– When the crest factor is 2.5 – 3.0, the accuracy must be increased by 7.0%.
• Overload protection:
– F1 Fuse: μA mA range, ø6 x 32 mm, 0.6 A H600 V FF(CE)
– F2 Fuse: 10A range, ø6 x 25 mm, 10 A H600 V FF (CE)

This is a publication by Conrad Electronic SE, Klaus-Conrad-Str. 1, D-92240 Hirschau (www.conrad.com).
All rights including translation reserved. Reproduction by any method, e.g. photocopy, microfilming, or the capture in electronic data processing systems requires prior written approval by the editor. Reprinting, also in part, is prohibited.
This publication represents the technical status at the time of printing.
Copyright 2022 by Conrad Electronic SE.
2268246_v4_0222_02_dh_m_4L

References

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• Conrad Electronic » Alle Teile des Erfolgs
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