Portable Precision Electronic Balance

Portable Precision Electronic Balance

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Portable Precision Electronic Balance
  • Portable Precision Electronic Balance
Portable Precision Electronic Balance
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Portable Precision Electronic Balance

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Portable Precision Electronic Balance – QVMBL

The QVMBL Series Portable Precision Electronic Balance offers weighing capacities from 300 g to 6,000 g with readability ranging from 0.01 g to 1 g. Its compact, battery-powered design makes it suitable for laboratory benches, workshops, production areas, and field applications. Each balance features a durable stainless-steel weighing pan, clear LCD display, and rapid response time, providing stable weight readings in approximately two seconds.

The QVMBL Series supports both internal battery operation and AC power, providing flexible weighing wherever a fixed power source may not be available. Built-in overload protection helps safeguard the balance during routine use, while support for more than ten weighing units makes it suitable for a broad range of measurement requirements.

Flexible Capacity and Readability Options

With 12 models available, the QVMBL Series allows users to select the capacity and readability that best match their weighing requirements. Options range from a 300 g capacity with 0.01 g readability and draft shield to a 6,000 g general-purpose electronic balance.

Counting functions and piece-counting capabilities help streamline inventory and parts-counting tasks. Multiple weighing units, including carat, pennyweight, troy ounce, gram, and grams per square meter, provide additional flexibility for applications involving jewelry, textiles, paper, and other materials.

RS232 Connectivity and Calibration

An integrated RS232 interface enables connection to a printer or computer for convenient data transfer and record keeping. External calibration using a certified calibration weight helps maintain weighing accuracy following transportation, relocation, or changes in operating temperature.

Key Features

  • Capacity Range: 300 g to 6,000 g

  • Readability: 0.01 g to 1 g

  • Portable, compact design for bench and field weighing

  • Stainless-steel weighing pan for routine laboratory and industrial use

  • Fast response time with stable readings in approximately two seconds

  • Battery and AC power operation

  • Overload protection for added equipment protection

  • 12 models to match different weighing capacities and resolutions

  • Multiple weighing units for diverse applications

  • Piece-counting function for inventory and parts counting

  • RS232 interface for printer and computer connectivity

  • External calibration using certified weights

  • Suitable for laboratories, workshops, inventory management, jewelry, textile, paper, and field applications

Portable Precision Electronic Balance – QVMBL Applications

The QVMBL Series Portable Precision Electronic Balance is designed for accurate weighing across laboratory, industrial, commercial, educational, and field environments. Its portable design, flexible power options, multiple weighing units, and counting functions support a wide range of measurement and quality control applications.

  • Field and On-Site Weighing: Battery operation enables convenient weighing at remote locations, warehouses, production areas, and other sites without convenient access to fixed power.

  • Jewelry and Precious Metals: Carat (ct), pennyweight (dwt), and troy ounce (ozt) weighing units support precise measurement of gold, gemstones, silver, and other precious metals.

  • Textile and Paper GSM Measurement: The grams-per-square-meter (GSM) weighing mode supports basis-weight checks for textiles, fabrics, paper, and related materials.

  • Parts Counting and Inventory: Piece-counting functions make it easier to count batches of uniform components, hardware, and small parts for inventory and stock management.

  • Industrial Quality Control: Precision weighing supports material checks, component measurement, production verification, and routine quality control on the manufacturing floor.

  • Food and Agriculture: Suitable for weighing ingredients, samples, produce, and other materials during food processing, agricultural testing, grading, and inspection.

  • Education and Training Laboratories: Simple operation and portable construction make the balance suitable for educational laboratories, training environments, demonstrations, and routine weighing exercises.

Portable Precision Electronic Balance – QVMBL Key Features

The QVMBL Series Portable Precision Electronic Balance combines compact portability, battery-powered operation, precision weighing, and versatile measurement functions for laboratory, industrial, commercial, and field applications.

  • Wide Model Range: Choose from 12 models with capacities from 300 g to 6,000 g and readability from 0.01 g to 1 g, providing suitable options for different weighing requirements.

  • Portable Battery-Powered Design: Operates using an internal 6 V rechargeable battery or 7.4 V lithium battery pack, as well as AC power, allowing flexible use in locations without convenient access to electrical outlets.

  • Fast Stabilization in ≤2 Seconds: Rapid stabilization delivers a reliable weight reading in approximately two seconds, helping improve weighing efficiency during repetitive tasks.

  • Overload Protection: Helps protect the weighing cell from loads that exceed the specified capacity during routine handling, weighing, and transportation.

  • Multiple Weighing Units: Supports a broad selection of units, including grams, carats, pennyweights, troy ounces, pounds, ounces, kilograms, pieces, and GSM, providing flexibility for different applications.

  • Piece-Counting Function: Counts uniform components based on their weight, making the balance useful for inventory control, parts counting, stock management, and kitting operations.

  • Stainless-Steel Weighing Pan and ABS Housing: The stainless-steel pan provides a durable weighing surface, while the ABS housing supports daily handling and easy cleaning.

  • Clear LCD Display: A high-contrast LCD with a white background and black text provides clear visibility of weight readings during routine operation.

  • RS232 Interface: Connects the balance to a computer or printer for data output, measurement records, and documentation.

Theory and Method

A portable precision electronic balance measures the force generated by a sample placed on its weighing pan and converts that measurement into a digital mass reading. The pan transfers the applied load to a precision force-measuring cell, while the electronic system processes the signal and displays the corresponding weight value. With 0.01 g readability, the high-resolution QVMBL model can detect small changes in sample weight with reliable repeatability. Once the measurement stabilizes, the result is displayed, with the QVMBL Series reaching a stable reading in approximately two seconds.

External Calibration for Accurate Weighing

Calibration is essential for maintaining weighing accuracy. The QVMBL Series features external calibration, allowing the operator to place a certified calibration weight on the pan. The balance then adjusts its measurement span to correspond with the known reference value. Performing calibration after transportation, relocation, or significant temperature changes helps maintain accurate and consistent results.

Overload Protection

The QVMBL Series incorporates overload protection to help safeguard the weighing cell when a load exceeds the balance's rated capacity. This feature is particularly useful for a portable precision balance that may be transported between laboratories, workshops, warehouses, and field locations.

Stable Measurement Conditions

Accurate weighing also depends on proper operating conditions. For reliable results, the balance should be positioned on a level, stable, and vibration-free surface and operated under consistent temperature conditions. The QVMBL Series supports an operating temperature range of 10°C to 40°C, making it suitable for laboratory, workshop, production, and field environments.

The compact ABS housing provides durability for routine handling, while the stainless-steel weighing pan offers a practical surface for daily weighing tasks. The high-resolution 300 g model also includes a draft shield to help minimize the effects of air movement when performing fine measurements.

Portable Precision Electronic Balance - QVMBL Technical Specifications

Parameter QVM BL30 2 QVM BL60 2 QVM BL10 02 QVM BL20 02 QVM BL30 02 QVM BL10 02C QVM BL20 02C QVM BL30 02C QVM BL50 02 QVM BL50 01 QVM BL60 01 QVM BL60 00
Maximum Capacity 300 g 600 g 1000 g 2000 g 3000 g 1000 g 2000 g 3000 g 5000 g 5000 g 6000 g 6000 g
Readability 0.0 1 g 1 g
Repeatability† ± 0.0 1 g ± 0.0 2 g ± 0.1 g ± 1 g
Linearity ± 0.0 2 g ± 0.0 3 g ± 0.0 3 g ± 0.2 g ± 2 g
Windshield Plastic None
Pan Size Ø150 mm Ø180 mm
Stabilization Time ≤2 s
Calibration External
Weighing Units g/ct/lb/oz/ozt/dwt/kg/PCS/GSM, etc
Housing ABS cover, SS pan
Display LCD
Dimensions (L × W × H) 230×270×70 mm
Battery 6 V 2.5 A or 7.4 V Li
Voltage 110–240 V, 50/60 Hz
Operating Temperature 10–40°C
Interface RS232

Delivery time varies upon stock availability. Our standard dispatch and shipping times are generally within 1 week, however for some high demand items the delivery may be extended to 2-3 weeks. If you require these items urgently please contact us to check accurate stock availability and to organize faster shipping methods.

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Important Delivery Information

Delivery time varies upon stock availability. Our standard dispatch and shipping times are generally within 1 week, however for some high demand items the delivery may be extended to 2-3 weeks.

Need it urgently? Contact us here to check stock and organize faster shipping.

Orders:
Purchaser acknowledges that when placing an order on the Qualitest:

A. the placing of the order signifies the purchaser's assent to place said order at the Qualitest and that the order will be accepted by the successful processing of the order by Qualitest USA LC.
B. the purchaser typing their name when requested to do so by the Qualitest constitutes a signature to contract
C. the purchaser has the full authority to enter into the contract for such entity, and such grant of authority was indicated by purchaser by placement of the order through the Qualitest.
D. A minimum handling fee will be applied to the shipping total for all orders.

Shipping within the U.S.A.:

All orders will be shipped best way prepaid, via courier for smaller packages or via Freight forwarders for larger crates. A handling fee may be applicable to orders. Title to merchandise transfers to the purchaser upon delivery to the carrier. Loss or damage in transit is the responsibility of the purchaser. Qualitest USA will provide assistance with information needed for processing claims.

Shipping outside of the U.S.A.:

All orders will be shipped best way, via courier for smaller packages or via Freight forwarders for larger crates. A low handling fee may be applicable. Title to merchandise transfers to the purchaser upon delivery to the carrier. Loss or damage in transit is the responsibility of the purchaser. Qualitest USA will provide assistance with information needed for processing claims. Export fees, duties, taxes, and customs clearance are the responsibility of the purchaser.

Shipping insurance is not included, please contact our sales representatives if you need shipping insurance.

Partial shipment: Qualitest USA reserves the right to make partial shipments unless otherwise instructed by the purchaser.

Payment terms: All payments to Qualitest USA are to be made in U.S. Dollars (USD)

A. Credit Card - Qualitest USA will accept Visa, Master Card, AMEX or Discover. Required information from the purchaser is the credit card number, 3 digit security code, expiration date, card holder's name (exactly as it appears on the card), billing address, and valid telephone number for us to use in case of difficulty. Qualitest USA reserves the right to delay shipment pending verification of credit card validity.
B. Wire Transfer - Transfer must be made to Qualitest and confirmed for the full purchase amount (merchandise, handling and shipping) prior to shipment. Please contact us by phone at 1.877.884.TEST (8378)(outside U.S. +1.905.944.9825) or by fax at +1.954.697.8211 for bank information.
C. Open Account - Available to U.S.A. and Canadian customers only. Terms on open accounts are Net 30 days from date of shipment. Qualitest USA reserves the right to refuse shipment of new orders if any unpaid invoices are older than 30 days. Purchasers may apply for an open account by providing:

their bank information
3 credit references from other suppliers
Please allow 5 business days for confirmation of credit and creation of an open account.

Return Policy:

Qualitest USA may accept return of purchased merchandise within North America for refund or credit under the following conditions -

  • There may be an additional restocking fee charged to the transaction if items are already shipped to customer.
  • Goods must be returned to Qualitest USA within 5 days of the date of the receipt of the purchased goods.
  • All freight, duties, customs, and other related shipping charges for the returned merchandise are borne by the purchaser. Shipments made freight collect will be refused.
  • Merchandise must be returned properly packaged in brand new, salable condition, along with original packaging and all documentation, accessories and certificates.
  • Purchaser has confirmed return authorization directly with Qualitest.
  • Merchandise is regular catalog item. Special order items can not be returned.
  • All returned merchandise is subject to inspection by Qualitest. Qualitest reserves the right to refuse return of any merchandise that is used, damaged, or not part of the current published price list. In the case Qualitest does not accept the returned merchandise, reasonable attempts will be made to notify the Buyer and the merchandise will be returned to Buyer as they were received by Qualitest. Damaged merchandise that can be restored to original condition and thus accepted for return will be evaluated on an individual basis. The purchaser will be advised of additional expenses for the repair and restoration of the returned item. After approval, these expenses will be charged to the purchaser in addition to the restocking fee.


Change of Terms:

The acceptance of any order by Qualitest USA is subject to purchaser's assent to all of the terms and conditions set forth herein. Purchaser's assent to these terms and conditions shall be presumed from the purchaser's placement of an order through the Qualitest. Any and all other terms and conditions are expressly rejected, and no addition or modification of terms and conditions shall be binding without the prior agreement of Qualitest USA in writing.

Complete Agreement:

The terms and conditions in the Qualitest web site, incorporated herein by reference, including forms, acknowledgements, quotations, invoices and sales terms and conditions constitute the entire and exclusive agreement between the purchaser and Qualitest USA LC.

Information:

Qualitest USA makes every effort to insure the accuracy of the product information displayed on its web sites, but makes no warranties, expressed or implied, as to the accuracy of the data portrayed on the web sites. Qualitest USA reserves the right to change product information, including pricing information at any time without notice. 

Trademarks and Copyrights:

The WorldofTest.com Qualitest contains trademarked product names. Product names are not to be reproduced or used in any fashion by any party other than Qualitest without the express written consent of Qualitest International Inc.. All pictures, descriptions, and other content of this web site are copyrighted by Qualitest USA and may not be used without the express written permission of Qualitest USA. Purchaser acknowledges that they have no right, title, or interest in the trademarks or copyrights in the products, and purchaser covenants that it will take no action to register or otherwise interfere with such rights. Please contact us with any requests for permission or questions about our trademarks. 

Warranty Disclaimer:

No warranty or affirmation of fact, express or implied, other than expressly set forth herein is made or authorized by Qualitest USA. Qualitest USA disclaims any and all liability for product defect claims. Qualitest USA does not express or imply a warranty that any product on the web site(s) is fit for a particular purpose. Qualitest USA honors the product warranty as published and made available by Qualitest USA. Warranty claims for products not manufactured by Qualitest are the responsibility of the manufacturer. Qualitest USA will always make its best good faith effort to resolve warranty claims. 


Force Majeure:

Qualitest USA shall not be liable for any delay in or impairment of performance resulting in whole or in part from Acts of God, service interruptions, labor disruptions, insurrections, governmental decrees or controls, war risks, severe weather, supplies or raw materials, inability to procure or ship products, inability to obtain permits and/or licenses, or any other circumstances or causes beyond the control of Qualitest USA in the conduct of its business. 

Qualitest USA Privacy Policy 

I. What legal provisions govern our data processing practices? How and from where (internal/external sources) is personal data acquired? What are the rights of the user (web site visitor/registered customer)? 

1. General
As a general principle, no personal details need to be provided when visiting our Internet site. Data made available to us by you is treated in strict confidence and in accordance with the provisions of the Federal Data Protection Act. With a few exceptions (see point 2 below), our web server only registers non-personal (anonymous) data concerning the use of our site. Specifically, the log files of our web server, as a general rule, only contain the user's IP address, the last page visited by the user, the browser used, date, time and the file requested. This anonymous data, however, does not permit conclusions to be drawn about the individual users, and merely serves to prepare statistics on the use of our Internet site for the purpose of its improvement. At the same time, great importance is placed on ensuring that usage data is not linked with personal data. 

2. Personal data

Person-related data (personal data) is only used if the newsletter is ordered (by email), product(s) is (are) ordered, or to supply product information. We undertake to use the personal data entrusted to us only for the purposes stated. Purchase history is retained for assistance with future customer needs. 

II. What security measures are used to protect personal data? What are the user's options for processing personal data? 

3. Technical measures

Databases are optimally protected against third party access, loss, misuse and falsification through the use of appropriate technical means. In order to determine the popularity of individual topic areas, cookies are used in those sections. These text files are stored on your hard disk and facilitate your use of our Internet site. Thanks to these cookies, there is no need for specific registration each time you visit a section requiring registration, and we can supply you with the personalized contents you request. 

It is for you to decide whether you want to work with cookies and, if so, which kind (permanently stored on the hard disk or only placed for the time of the browser activity). However, we draw your attention to the fact that access to fields requiring registration is only possible with activated cookies. 

III. What data is communicated to third parties and for what purposes? 

4. Communication of personal data

Personal data entrusted to us by you is not communicated, leased or sold to third parties. 

IV. Which department answers questions about the processing of personal data? 

5. Contact

In the light of the rapid technical developments in connection with the Internet, we make every effort to constantly improve our Internet site and technical precautions, including those connected with data protection. We will keep you suitably informed about such measures. Any changes will be published here. Further information is available at any time by contacting Qualitest USA.

Disclaimer of liability Qualitest USA shall not be liable for direct, indirect or consequential losses resulting from or in connection with access to, use of or queries to the Qualitest web site or its links with other web sites, even if Qualitest USA has previously been informed of the possibility of such losses. No guarantee is provided as to the accuracy of the information disseminated via the Qualitest USA web site. In addition, Qualitest USA guarantees neither the reliability nor the completeness of the information contained on its web site. The information made available on the Qualitest and WorldofTest.com web site may be amended at any time without prior notice. In particular, Qualitest USA shall not be liable for losses caused by transmission errors, technical faults and interruptions, breakdowns or an unlawful interference with the user's data processing system or the generally accessible systems and transmission networks. Nor shall Qualitest USA be liable for losses resulting from breakdowns, interruptions or overloads occurring to any data processing systems. If certain links are activated on the Qualitest and WorldofTest.com web site, the user may under certain circumstances leave the Qualitest web site. Qualitest USA assumes no responsibility for the contents, products or services offered or other information or offers contained on these linked web sites. 

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