KERN UCI Hardness Tester - HO 2K - Test Force 20N - Units: HL, HV, HB, HRB, HRC, MPa, HRA - Manual
KERN HO 2K
The KERN HO 2K is a high precision ultrasonic hardness tester designed for mobile applications where fast and reliable results are essential. Using the ultrasonic contact impedance (UCI) method, it provides accurate hardness measurements with minimal damage to the test surface. This makes it ideal for on-site inspections, production checks, and quality assurance tasks.
The principle is simple yet effective. The device uses a vibrating rod that operates at ultrasonic frequency and presses a Vickers indenter onto the sample with a defined test force. The resonance frequency shifts as soon as the indenter creates a small impression in the material. This change is then converted into a hardness value. The indentation is microscopic, meaning the test is almost non-destructive, unlike traditional Rockwell or Brinell testing.
The HO 2K is particularly useful for small forgings, weld seams, castings, tool steels, bearings, and gear flanks. It can also be used for testing the effects of heat treatment. Compared with optical Vickers testing, the HO 2K requires no complex microscopes, allowing quick measurements directly on installed parts. Compared with Leeb hardness testing, it does not require heavy samples, which makes it highly versatile in the field.
It supports multiple hardness scales including Rockwell, Brinell, Vickers, and even tensile strength values. Up to 1000 groups with 20 readings each can be stored, and results are supported by mini statistics such as max, min, and average. Calibration is simple with up to 20 reference values available, ensuring flexibility across materials.
Key Technical Data
-
Test force: 20 N
-
Hardness scales: HL, HV, HB, HRB, HRC, HRA, MPa
-
Measuring ranges: Rockwell A 61–85.6 HRA, B 41–100 HRB, C 20.3–68 HRC
-
Brinell range: 79–618 HB
-
Tensile strength: 255–2180 MPa
-
Minimum sample thickness: 2 mm
-
Minimum weight: 300 g
-
Data storage: 1000 groups with 20 readings each
-
Interfaces: USB
**All our products are brand new, shipped in the original packaging, and include manufacturer warranty**
- Description
- Why Buy From Us
- Shipping
- Return & Refund Policy
- Payments Policy
KERN HO 2K
The KERN HO 2K is a high precision ultrasonic hardness tester designed for mobile applications where fast and reliable results are essential. Using the ultrasonic contact impedance (UCI) method, it provides accurate hardness measurements with minimal damage to the test surface. This makes it ideal for on-site inspections, production checks, and quality assurance tasks.
The principle is simple yet effective. The device uses a vibrating rod that operates at ultrasonic frequency and presses a Vickers indenter onto the sample with a defined test force. The resonance frequency shifts as soon as the indenter creates a small impression in the material. This change is then converted into a hardness value. The indentation is microscopic, meaning the test is almost non-destructive, unlike traditional Rockwell or Brinell testing.
The HO 2K is particularly useful for small forgings, weld seams, castings, tool steels, bearings, and gear flanks. It can also be used for testing the effects of heat treatment. Compared with optical Vickers testing, the HO 2K requires no complex microscopes, allowing quick measurements directly on installed parts. Compared with Leeb hardness testing, it does not require heavy samples, which makes it highly versatile in the field.
It supports multiple hardness scales including Rockwell, Brinell, Vickers, and even tensile strength values. Up to 1000 groups with 20 readings each can be stored, and results are supported by mini statistics such as max, min, and average. Calibration is simple with up to 20 reference values available, ensuring flexibility across materials.
Key Technical Data
-
Test force: 20 N
-
Hardness scales: HL, HV, HB, HRB, HRC, HRA, MPa
-
Measuring ranges: Rockwell A 61–85.6 HRA, B 41–100 HRB, C 20.3–68 HRC
-
Brinell range: 79–618 HB
-
Tensile strength: 255–2180 MPa
-
Minimum sample thickness: 2 mm
-
Minimum weight: 300 g
-
Data storage: 1000 groups with 20 readings each
-
Interfaces: USB
**All our products are brand new, shipped in the original packaging, and include manufacturer warranty**
Why Buy From Us?
We get it. You've got a lot of choice when it comes to online retailers. Here's why we think you should shop with us at Zentra.
Free Shipping within the EU. No extra charges. Ever.
Price Match Guarantee. Best prices online guaranteed.
30 Day Easy Returns. No happy with your product? we'll take it back no questions asked. Great Service. We pride ourselves on the best service, anywhere.
Your Satisfaction Guaranteed. We handpick our products for quality, we know you'll love them. But is there is ever something wrong, we'll fix it.
Shipping is FREE on all orders to customers within the EU. We don't want to mess around with fine print and extra charges, we like things to be simple and easy.
While we fully stand by every product that we sell, we understand that sometimes you might change your mind or realise the product you ordered wasn't exactly what you were hoping for.
That's why we offer a 14 Days Return Policy.
If you decide you want to return an item for any reason within 14 days after receipt of your order, please email us atsales@zentra-eu.com with your order number and we will provide detailed instructions on how to process the return.
Please note, you as the customer will be responsible for paying the return shipping costs of the item(s) in your order.
Once your return item(s) have been received and inspected at our warehouse(s), we will send you an email notification that we have processed your return payment.
*Please note: We allow returns if the product has only been opened and inspected, but not used. Products showing signs of use, wear, or missing accessories are not eligible for refund.
We allow returns if the product has only been opened and inspected, but not used.
If you decide you want to return your order, please email us atsales@zentra-eu.com with your order number and we will assist you. We want to make this as simple of a process as possible for you.
Please do not ship your return until we have confirmed the correct return address with you.
All standard returns must be sent to our central return address:
Zentra Online - Returns Department
Groeneweg 32c
1861 PH Bergen
The Netherlands
In some cases, especially for large or technical equipment, we may ask you to ship directly to the manufacturer’s warehouse. Our customer service team will confirm the correct return location with you by email before you send back the product.
Orders Not Received
If your order has not arrived within the estimated delivery time, please contact us atsales@zentra-eu.com with your order number. We will investigate with the courier and, if the package is confirmed lost, we will offer you either a replacement or a full refund.
Damages
If the product is damaged, you must make note of it immediately when signing for delivery and send photos to sales@zentra-eu.com the day of delivery.
Zentra will pay for shipping defective, damaged, or incorrect merchandise at our cost.
Remember to keep all the original packaging for any items that need to be returned. All returns need to be authorized by our customer service department prior to being processed.
We will ensure you get the product you ordered, undamaged, as soon as possible. Items that become damaged after use are non-refundable unless specified under warranty.
Cancellations
If you would like to cancel an order, please email or call us immediately.
Orders canceled before shipment will receive a full refund. Orders canceled after shipment fall under our 14-day return policy and may be subject to return shipping costs.
Timeframes for Reporting Issues
To make sure we can help you quickly, please report issues within the following timeframes:
-
Change of Mind: 14 days from the date you received the order.
-
Damaged Items: On the day of delivery (please send photos the same day).
-
Wrong Product Received: Within 7 days of delivery.
-
Faulty Product (after delivery): Within 14 days of delivery, unless covered by warranty.
-
Order Not Received: Within 30 days from the order date.
-
Order Cancellation: Before the order has been shipped for a full refund; after shipment, our 14-day return policy applies.
Refund Processing Time
Once we get your returned item, we’ll check it and then send your money back. This usually takes 5 to 7 days. We’ll let you know as soon as your refund is on the way.
Refund Method
All refunds will be made to your original payment method unless otherwise agreed in writing.
Other Return Policy Notes:
All products sold on our website follow this 14-day return policy unless explicitly stated otherwise in the product description.
Certified pre-owned or used products are not eligible for return unless they arrive damaged or defective.
Orders placed for short-term or temporary use (e.g., trade shows, promotional events) are generally not eligible for return unless the product arrives damaged or is not as described.
Faulty Items After Delivery
If your item stops working within 14 days of delivery and is not due to misuse or damage, please contact us for a replacement or refund. Items may also be covered by the warranty, see our Product Warranty Policy for details.
At Zentra Online, we want to make your shopping experience simple and safe. Here's everything you need to know about how payments work in our store.
Payment Methods
We accept the following payment methods:
-
Credit & Debit Cards: Visa, Mastercard, American Express, Maestro, UnionPay
-
Wallets: Apple Pay, Google Pay, Paypal
-
Local Methods: iDEAL (Netherlands), Bancontact (Belgium)
You will be charged at the time of placing the order.
Currency
All prices are listed in Euros (€).
Taxes (VAT)
-
VAT is included in all listed prices.
-
We provide VAT invoices for every order.
Order Cancellations
You can cancel your order anytime before it is shipped and get a full refund.
There’s no time limit as long as the item hasn’t been shipped yet. Once shipped, our 14-day return policy applies.
If you have any questions, feel free to contact us atsales@zentra-eu.com
- Description
- Why Buy From Us
- Shipping
- Return & Refund Policy
- Payments Policy
KERN HO 2K
The KERN HO 2K is a high precision ultrasonic hardness tester designed for mobile applications where fast and reliable results are essential. Using the ultrasonic contact impedance (UCI) method, it provides accurate hardness measurements with minimal damage to the test surface. This makes it ideal for on-site inspections, production checks, and quality assurance tasks.
The principle is simple yet effective. The device uses a vibrating rod that operates at ultrasonic frequency and presses a Vickers indenter onto the sample with a defined test force. The resonance frequency shifts as soon as the indenter creates a small impression in the material. This change is then converted into a hardness value. The indentation is microscopic, meaning the test is almost non-destructive, unlike traditional Rockwell or Brinell testing.
The HO 2K is particularly useful for small forgings, weld seams, castings, tool steels, bearings, and gear flanks. It can also be used for testing the effects of heat treatment. Compared with optical Vickers testing, the HO 2K requires no complex microscopes, allowing quick measurements directly on installed parts. Compared with Leeb hardness testing, it does not require heavy samples, which makes it highly versatile in the field.
It supports multiple hardness scales including Rockwell, Brinell, Vickers, and even tensile strength values. Up to 1000 groups with 20 readings each can be stored, and results are supported by mini statistics such as max, min, and average. Calibration is simple with up to 20 reference values available, ensuring flexibility across materials.
Key Technical Data
-
Test force: 20 N
-
Hardness scales: HL, HV, HB, HRB, HRC, HRA, MPa
-
Measuring ranges: Rockwell A 61–85.6 HRA, B 41–100 HRB, C 20.3–68 HRC
-
Brinell range: 79–618 HB
-
Tensile strength: 255–2180 MPa
-
Minimum sample thickness: 2 mm
-
Minimum weight: 300 g
-
Data storage: 1000 groups with 20 readings each
-
Interfaces: USB
**All our products are brand new, shipped in the original packaging, and include manufacturer warranty**
Why Buy From Us?
We get it. You've got a lot of choice when it comes to online retailers. Here's why we think you should shop with us at Zentra.
Free Shipping within the EU. No extra charges. Ever.
Price Match Guarantee. Best prices online guaranteed.
30 Day Easy Returns. No happy with your product? we'll take it back no questions asked. Great Service. We pride ourselves on the best service, anywhere.
Your Satisfaction Guaranteed. We handpick our products for quality, we know you'll love them. But is there is ever something wrong, we'll fix it.
Shipping is FREE on all orders to customers within the EU. We don't want to mess around with fine print and extra charges, we like things to be simple and easy.
While we fully stand by every product that we sell, we understand that sometimes you might change your mind or realise the product you ordered wasn't exactly what you were hoping for.
That's why we offer a 14 Days Return Policy.
If you decide you want to return an item for any reason within 14 days after receipt of your order, please email us atsales@zentra-eu.com with your order number and we will provide detailed instructions on how to process the return.
Please note, you as the customer will be responsible for paying the return shipping costs of the item(s) in your order.
Once your return item(s) have been received and inspected at our warehouse(s), we will send you an email notification that we have processed your return payment.
*Please note: We allow returns if the product has only been opened and inspected, but not used. Products showing signs of use, wear, or missing accessories are not eligible for refund.
We allow returns if the product has only been opened and inspected, but not used.
If you decide you want to return your order, please email us atsales@zentra-eu.com with your order number and we will assist you. We want to make this as simple of a process as possible for you.
Please do not ship your return until we have confirmed the correct return address with you.
All standard returns must be sent to our central return address:
Zentra Online - Returns Department
Groeneweg 32c
1861 PH Bergen
The Netherlands
In some cases, especially for large or technical equipment, we may ask you to ship directly to the manufacturer’s warehouse. Our customer service team will confirm the correct return location with you by email before you send back the product.
Orders Not Received
If your order has not arrived within the estimated delivery time, please contact us atsales@zentra-eu.com with your order number. We will investigate with the courier and, if the package is confirmed lost, we will offer you either a replacement or a full refund.
Damages
If the product is damaged, you must make note of it immediately when signing for delivery and send photos to sales@zentra-eu.com the day of delivery.
Zentra will pay for shipping defective, damaged, or incorrect merchandise at our cost.
Remember to keep all the original packaging for any items that need to be returned. All returns need to be authorized by our customer service department prior to being processed.
We will ensure you get the product you ordered, undamaged, as soon as possible. Items that become damaged after use are non-refundable unless specified under warranty.
Cancellations
If you would like to cancel an order, please email or call us immediately.
Orders canceled before shipment will receive a full refund. Orders canceled after shipment fall under our 14-day return policy and may be subject to return shipping costs.
Timeframes for Reporting Issues
To make sure we can help you quickly, please report issues within the following timeframes:
-
Change of Mind: 14 days from the date you received the order.
-
Damaged Items: On the day of delivery (please send photos the same day).
-
Wrong Product Received: Within 7 days of delivery.
-
Faulty Product (after delivery): Within 14 days of delivery, unless covered by warranty.
-
Order Not Received: Within 30 days from the order date.
-
Order Cancellation: Before the order has been shipped for a full refund; after shipment, our 14-day return policy applies.
Refund Processing Time
Once we get your returned item, we’ll check it and then send your money back. This usually takes 5 to 7 days. We’ll let you know as soon as your refund is on the way.
Refund Method
All refunds will be made to your original payment method unless otherwise agreed in writing.
Other Return Policy Notes:
All products sold on our website follow this 14-day return policy unless explicitly stated otherwise in the product description.
Certified pre-owned or used products are not eligible for return unless they arrive damaged or defective.
Orders placed for short-term or temporary use (e.g., trade shows, promotional events) are generally not eligible for return unless the product arrives damaged or is not as described.
Faulty Items After Delivery
If your item stops working within 14 days of delivery and is not due to misuse or damage, please contact us for a replacement or refund. Items may also be covered by the warranty, see our Product Warranty Policy for details.
At Zentra Online, we want to make your shopping experience simple and safe. Here's everything you need to know about how payments work in our store.
Payment Methods
We accept the following payment methods:
-
Credit & Debit Cards: Visa, Mastercard, American Express, Maestro, UnionPay
-
Wallets: Apple Pay, Google Pay, Paypal
-
Local Methods: iDEAL (Netherlands), Bancontact (Belgium)
You will be charged at the time of placing the order.
Currency
All prices are listed in Euros (€).
Taxes (VAT)
-
VAT is included in all listed prices.
-
We provide VAT invoices for every order.
Order Cancellations
You can cancel your order anytime before it is shipped and get a full refund.
There’s no time limit as long as the item hasn’t been shipped yet. Once shipped, our 14-day return policy applies.
If you have any questions, feel free to contact us atsales@zentra-eu.com