MESR-100 AutoRanging In Circuit ESR Capacitor /Low Ohm Meter Up to 0.01 to 100R(Orange)
MESR-100 AutoRanging In Circuit ESR Capacitor /Low Ohm Meter Up to 0.01 to 100R(Orange)
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JINGYAN MESR-100 V2 Auto-ranging capacitor ESR and Low Ohm Meter, measuring range from 0.001 to 100.0R, support IN CIRCUIT Testing.
Using true 100 KHz sine wave to measure the ESR value, which is equal to the testing method of capacitor manufacturer.
In the market, there is some technique using short pulse method to testing, but the value will be varying vs the capacitance and sometimes reading is different from the manufacturer's value.
What is ESR of capacitor?
There is a series resistor inside capacitor, using 100kHz to remove the impedance 1/(2*pi*F*C), the impedance become small, and we can then measure the true series resistor value.
A bad E-capacitor will have larger ESR and create large ripple rather than filtering noise. Normally, a big capacitor is larger than 3 ohm.
Using this theory, we can measure the capacitor is bad/ damaged or good in condition.
Because our ESR meter only applies less than 15mV DC or peak to peak on a good capacitor, as a result we can use it as in circuit test. Because this low testing voltage, it cannot turn on the semiconductor inside a circuit under testing.
During repairing TV, LCD, Audio board, etc. we can in circuit testing the capacitor is good or not.
Dual terminal, for fast and easy inspect general capacitor or resistor, a printed ESR table for fast check
Compare MESR100 old V1 and new V2 Improvement:
1) Change square wave to sine wave 100 KHz, reduce square wave’s high frequency component, and affect the reading passing the test leads and capacitor.
2) Higher Resolution up to 0.001 ohm.
3) 128X64 dot matrix LCD, with more larger value display and information
4) Embedded 25V capacitor table at LCD, auto display the capacitor is good or bad reference to common 25V electrolytic capacitor.
5) New plastic case, curve design for hand carrying. New stand for 60 degree stand on desk.
6) Use 2X AA battery, more convenience and longer battery life than 9V battery.
7) Support external USB power, using standard micro-USB port.
Specification:
Range
Accuracy (After Zero, tested with 1,10,100R resistor)
Refresh Time (Manual Mode)
Auto mode take 0 to 2s more time depend on value
0.000 to 1.000R 1%+2Digit ~0.4s
1.000 to 10.00R 1%+1Digit ~0.4s
10.00 to 100.0R 2%+1Digit ~0.4s
Accuracy maybe affected by the test lead’s length and contact point resistance.
Standard test leads is 15cm, for longer test leads need special shielding to affect the EMI inference (Can contact sales’ person for more detail)
1) Accuracy: Up to 1% (detail on above table)
Wide Measurement Range: >1uF (for 0.1uF the error will be larger on equation 1/(2*pi*F*C) @ 100Khz )
2) High Resolution: 4 digit, or 0.001Ohm @ 1 Ohm range
3) Measuring voltage: <~40mV RMS (TESTING VOLTAGE)
4) Clamping voltage: ~0.15V (open voltage)
5) Battery 2X AA 1.5V battery
6) External Power: 5V micro USB
7) Operating current 0.02A
8) Battery Life time: >80 Hours
Operating Introduction:
1) POWER ON
Press and hold the ON/ OFF circle orange button for 2 to 3 second to power on.
Press and release the ON/ OFF button to shut down meter.
2) AUTO/ MANUAL mode:
i) Auto Range:
Press and release the RANGE button and at the first line of LCD will show “AUTO:"
At auto mode meter will automatically select the best range to detect.
ii) Manual Range:
Scroll the manual range from 1R, 10R and 100R range by press and release the RANGE button
In LCD will show MANUAL at first LCD line and show at second line: 0-1R, 1-10R and 10-100R.
3) 1 Key Zero:
Short circuit the test leads’ terminal, cancelling the wire resistance.
Press and release the “ZERO" button, LCD shows “ZERO" and wait the zero disappear.
If you are using the meter array socket, you need to use a short pin to short circuit to set zero.
4) Backlight:
LCD backlight will on during power on
5) Auto Sleep:
Around 10 hours for not testing, it will shut down automatically to save power.
6) OVERFLOW or OL:
Display overflow when the value is out of range, you can check that you are zero correctly.
7) ESR TABLE:
It is for reference only, different manufacturer of capacitor has different ESR, better to test a good cap ESR and compare with what you are testing, usually bad cap with higher ESR few times larger than good one.
8) SOFTWARE ESR:
Put the 25V Electrolytic capacitor value to LCD, and compare,
GOOD if C < XXuF, means the capacitor maybe good condition if it is less than XXuF
9) PLASTIC STAND:
If you don’t use the stand, press and push the lock position
✓ FREE SHIPPING - No shipping fees charged
✓ International Delivery - Ships from our overseas warehouse
✓ Processing Time - 1-3 days handling time
✓ Estimated Delivery - 6-13 business days total
How It Works:
- Orders placed before 2:00 PM SAST (Monday-Friday) begin processing the same day
- Orders after 2:00 PM or on weekends/holidays process the next business day
- Delivered via private courier with SMS, email, and WhatsApp tracking updates
- If courier cannot reach you, order may be sent to nearest PAXI collection point
- Shipping insurance included in your product price
Customs & Duties Information:
Orders up to R2000:
✓ Delivered Duty Paid (DDP) - The price you see is the final price you pay
✓ We handle all import duties, taxes, and customs clearance fees
✓ No surprise charges upon delivery
Orders over R2000:
⚠️ You will be responsible for any import duties, taxes, and customs clearance fees upon delivery
Note: Your ID information may be required for customs clearance to ensure smooth delivery.
At PMC TechLife, we are committed to ensuring our customers are satisfied with their purchases. Our return policy is designed to be transparent, fair, and fully compliant with South African consumer protection laws, including the Consumer Protection Act (CPA) and the Electronic Communications and Transactions Act (ECTA).
We offer distinct return processes based on the reason for your return. Please read the following sections carefully to understand your rights and the procedures for returning an item.
1. Your Right to Return Defective or Faulty Goods (6-Month Warranty)
In accordance with the Consumer Protection Act, if any product you receive is defective, faulty, unsafe, or of poor quality, you have 6 months from the date of delivery to return it. In such cases, you are entitled to a full refund, a replacement, or a repair of the item, at your choice. We will cover all costs associated with the return shipping for defective items.
To be eligible for a defective goods return:
- The return must be logged within 6 months of delivery.
- The item should be returned with all parts and original packaging where possible. We understand that discovering a defect may require opening the packaging or breaking a seal; returns for defective items will be accepted even if opened.
- Our inspection must confirm the issue was a manufacturing defect and not caused by customer misuse, improper installation, or normal wear and tear.
2. Your Right to a 'Cooling-Off' Return (Change of Mind)
In line with the Electronic Communications and Transactions Act for online purchases, you have a 7-day 'cooling-off' period. If you change your mind or ordered incorrectly, you have 7 days from the date of delivery to request a return for a refund or exchange.
To be eligible for a 'change of mind' return:
- The item must be in its original, as-new, and resalable condition, unworn and unused.
- The item must be returned in its original packaging, with all original tags and accessories included. You may open the packaging to inspect the item, but it must be returned undamaged.
- The customer is responsible for the cost of return shipping.
- Important: There are no handling or restocking fees for change-of-mind returns. You will be refunded the full purchase price, as the law grants you the right to cancel "without penalty."
3. How to Start a Return
To initiate any return, please follow these steps:
- Visit our dedicated returns portal: pmctechlife.returnscenter.com.
- Enter your order number and the email address used for the purchase.
- Follow the prompts to select the item(s) you wish to return and the reason for the return.
Once your request is submitted, we will review it. If your return is accepted, we will send you instructions on how and where to send your package. Items sent back to us without first requesting and receiving authorisation will not be accepted.
4. Exceptions & Non-Returnable Items
Please note that for 'change of mind' reasons, we cannot accept returns on the following:
- Gift cards
- Custom-ordered or personalized items
- Items specified as non-returnable for hygiene reasons (e.g., roll-on products, clothing, and personal care goods).
This does not affect your statutory right to return any item (including sale items) that is defective or faulty within 6 months of delivery.
5. Specific Product Notes
- LCD Screens: To prevent damage during installation, we strongly recommend that our LCD screens are installed by a qualified professional technician. Damage caused by improper installation is not covered under the 6-month warranty for manufacturing defects. If you believe an LCD screen was faulty upon arrival, providing an invoice from a technician can help expedite the assessment of your return claim.
- Spare Parts: Spare parts products cannot be returned if they have been installed on a mobile phone and are found to be working after installation. This does not affect your rights if the part was defective upon arrival.
6. Exchanges
The fastest way to ensure you get what you want is to return the item you have following the process above. Once the return is accepted and processed, you can make a separate purchase for the new item.
7. Refunds
We will notify you once we’ve received and inspected your return and let you know if the refund was approved based on the policy conditions. If approved, we will issue the refund to your original payment method within 5-7 business days. Please note that it may take additional time for your bank or credit card company to process and post the refund to your account.
8. Cancellation Policy
You can request to cancel your order by emailing us at sales@pmcjewellery.co.za.
- Before Shipping: We can only guarantee cancellation if your order has not yet been shipped.
- After Shipping: Once an order has shipped, it cannot be cancelled. If you wish to return the order, you must wait to receive it and then initiate a return through our portal. Such returns will be treated as 'Change of Mind' returns.
You can always contact us for any return questions at our help center.
Description
Description
JINGYAN MESR-100 V2 Auto-ranging capacitor ESR and Low Ohm Meter, measuring range from 0.001 to 100.0R, support IN CIRCUIT Testing.
Using true 100 KHz sine wave to measure the ESR value, which is equal to the testing method of capacitor manufacturer.
In the market, there is some technique using short pulse method to testing, but the value will be varying vs the capacitance and sometimes reading is different from the manufacturer's value.
What is ESR of capacitor?
There is a series resistor inside capacitor, using 100kHz to remove the impedance 1/(2*pi*F*C), the impedance become small, and we can then measure the true series resistor value.
A bad E-capacitor will have larger ESR and create large ripple rather than filtering noise. Normally, a big capacitor is larger than 3 ohm.
Using this theory, we can measure the capacitor is bad/ damaged or good in condition.
Because our ESR meter only applies less than 15mV DC or peak to peak on a good capacitor, as a result we can use it as in circuit test. Because this low testing voltage, it cannot turn on the semiconductor inside a circuit under testing.
During repairing TV, LCD, Audio board, etc. we can in circuit testing the capacitor is good or not.
Dual terminal, for fast and easy inspect general capacitor or resistor, a printed ESR table for fast check
Compare MESR100 old V1 and new V2 Improvement:
1) Change square wave to sine wave 100 KHz, reduce square wave’s high frequency component, and affect the reading passing the test leads and capacitor.
2) Higher Resolution up to 0.001 ohm.
3) 128X64 dot matrix LCD, with more larger value display and information
4) Embedded 25V capacitor table at LCD, auto display the capacitor is good or bad reference to common 25V electrolytic capacitor.
5) New plastic case, curve design for hand carrying. New stand for 60 degree stand on desk.
6) Use 2X AA battery, more convenience and longer battery life than 9V battery.
7) Support external USB power, using standard micro-USB port.
Specification:
Range
Accuracy (After Zero, tested with 1,10,100R resistor)
Refresh Time (Manual Mode)
Auto mode take 0 to 2s more time depend on value
0.000 to 1.000R 1%+2Digit ~0.4s
1.000 to 10.00R 1%+1Digit ~0.4s
10.00 to 100.0R 2%+1Digit ~0.4s
Accuracy maybe affected by the test lead’s length and contact point resistance.
Standard test leads is 15cm, for longer test leads need special shielding to affect the EMI inference (Can contact sales’ person for more detail)
1) Accuracy: Up to 1% (detail on above table)
Wide Measurement Range: >1uF (for 0.1uF the error will be larger on equation 1/(2*pi*F*C) @ 100Khz )
2) High Resolution: 4 digit, or 0.001Ohm @ 1 Ohm range
3) Measuring voltage: <~40mV RMS (TESTING VOLTAGE)
4) Clamping voltage: ~0.15V (open voltage)
5) Battery 2X AA 1.5V battery
6) External Power: 5V micro USB
7) Operating current 0.02A
8) Battery Life time: >80 Hours
Operating Introduction:
1) POWER ON
Press and hold the ON/ OFF circle orange button for 2 to 3 second to power on.
Press and release the ON/ OFF button to shut down meter.
2) AUTO/ MANUAL mode:
i) Auto Range:
Press and release the RANGE button and at the first line of LCD will show “AUTO:"
At auto mode meter will automatically select the best range to detect.
ii) Manual Range:
Scroll the manual range from 1R, 10R and 100R range by press and release the RANGE button
In LCD will show MANUAL at first LCD line and show at second line: 0-1R, 1-10R and 10-100R.
3) 1 Key Zero:
Short circuit the test leads’ terminal, cancelling the wire resistance.
Press and release the “ZERO" button, LCD shows “ZERO" and wait the zero disappear.
If you are using the meter array socket, you need to use a short pin to short circuit to set zero.
4) Backlight:
LCD backlight will on during power on
5) Auto Sleep:
Around 10 hours for not testing, it will shut down automatically to save power.
6) OVERFLOW or OL:
Display overflow when the value is out of range, you can check that you are zero correctly.
7) ESR TABLE:
It is for reference only, different manufacturer of capacitor has different ESR, better to test a good cap ESR and compare with what you are testing, usually bad cap with higher ESR few times larger than good one.
8) SOFTWARE ESR:
Put the 25V Electrolytic capacitor value to LCD, and compare,
GOOD if C < XXuF, means the capacitor maybe good condition if it is less than XXuF
9) PLASTIC STAND:
If you don’t use the stand, press and push the lock position
Delivery Process
Delivery Process
✓ FREE SHIPPING - No shipping fees charged
✓ International Delivery - Ships from our overseas warehouse
✓ Processing Time - 1-3 days handling time
✓ Estimated Delivery - 6-13 business days total
How It Works:
- Orders placed before 2:00 PM SAST (Monday-Friday) begin processing the same day
- Orders after 2:00 PM or on weekends/holidays process the next business day
- Delivered via private courier with SMS, email, and WhatsApp tracking updates
- If courier cannot reach you, order may be sent to nearest PAXI collection point
- Shipping insurance included in your product price
Customs & Duties Information:
Orders up to R2000:
✓ Delivered Duty Paid (DDP) - The price you see is the final price you pay
✓ We handle all import duties, taxes, and customs clearance fees
✓ No surprise charges upon delivery
Orders over R2000:
⚠️ You will be responsible for any import duties, taxes, and customs clearance fees upon delivery
Note: Your ID information may be required for customs clearance to ensure smooth delivery.
Refunds & Returns
Refunds & Returns
At PMC TechLife, we are committed to ensuring our customers are satisfied with their purchases. Our return policy is designed to be transparent, fair, and fully compliant with South African consumer protection laws, including the Consumer Protection Act (CPA) and the Electronic Communications and Transactions Act (ECTA).
We offer distinct return processes based on the reason for your return. Please read the following sections carefully to understand your rights and the procedures for returning an item.
1. Your Right to Return Defective or Faulty Goods (6-Month Warranty)
In accordance with the Consumer Protection Act, if any product you receive is defective, faulty, unsafe, or of poor quality, you have 6 months from the date of delivery to return it. In such cases, you are entitled to a full refund, a replacement, or a repair of the item, at your choice. We will cover all costs associated with the return shipping for defective items.
To be eligible for a defective goods return:
- The return must be logged within 6 months of delivery.
- The item should be returned with all parts and original packaging where possible. We understand that discovering a defect may require opening the packaging or breaking a seal; returns for defective items will be accepted even if opened.
- Our inspection must confirm the issue was a manufacturing defect and not caused by customer misuse, improper installation, or normal wear and tear.
2. Your Right to a 'Cooling-Off' Return (Change of Mind)
In line with the Electronic Communications and Transactions Act for online purchases, you have a 7-day 'cooling-off' period. If you change your mind or ordered incorrectly, you have 7 days from the date of delivery to request a return for a refund or exchange.
To be eligible for a 'change of mind' return:
- The item must be in its original, as-new, and resalable condition, unworn and unused.
- The item must be returned in its original packaging, with all original tags and accessories included. You may open the packaging to inspect the item, but it must be returned undamaged.
- The customer is responsible for the cost of return shipping.
- Important: There are no handling or restocking fees for change-of-mind returns. You will be refunded the full purchase price, as the law grants you the right to cancel "without penalty."
3. How to Start a Return
To initiate any return, please follow these steps:
- Visit our dedicated returns portal: pmctechlife.returnscenter.com.
- Enter your order number and the email address used for the purchase.
- Follow the prompts to select the item(s) you wish to return and the reason for the return.
Once your request is submitted, we will review it. If your return is accepted, we will send you instructions on how and where to send your package. Items sent back to us without first requesting and receiving authorisation will not be accepted.
4. Exceptions & Non-Returnable Items
Please note that for 'change of mind' reasons, we cannot accept returns on the following:
- Gift cards
- Custom-ordered or personalized items
- Items specified as non-returnable for hygiene reasons (e.g., roll-on products, clothing, and personal care goods).
This does not affect your statutory right to return any item (including sale items) that is defective or faulty within 6 months of delivery.
5. Specific Product Notes
- LCD Screens: To prevent damage during installation, we strongly recommend that our LCD screens are installed by a qualified professional technician. Damage caused by improper installation is not covered under the 6-month warranty for manufacturing defects. If you believe an LCD screen was faulty upon arrival, providing an invoice from a technician can help expedite the assessment of your return claim.
- Spare Parts: Spare parts products cannot be returned if they have been installed on a mobile phone and are found to be working after installation. This does not affect your rights if the part was defective upon arrival.
6. Exchanges
The fastest way to ensure you get what you want is to return the item you have following the process above. Once the return is accepted and processed, you can make a separate purchase for the new item.
7. Refunds
We will notify you once we’ve received and inspected your return and let you know if the refund was approved based on the policy conditions. If approved, we will issue the refund to your original payment method within 5-7 business days. Please note that it may take additional time for your bank or credit card company to process and post the refund to your account.
8. Cancellation Policy
You can request to cancel your order by emailing us at sales@pmcjewellery.co.za.
- Before Shipping: We can only guarantee cancellation if your order has not yet been shipped.
- After Shipping: Once an order has shipped, it cannot be cancelled. If you wish to return the order, you must wait to receive it and then initiate a return through our portal. Such returns will be treated as 'Change of Mind' returns.
You can always contact us for any return questions at our help center.
