Electromagnetic Force Analytical Balance

The JDT-JS Series Electromagnetic Force Analytical Balance is a high-end precision weighing instrument built under the J-SKY brand of Jiangsu Jutian. Leveraging over 20 years of R&D and manufacturing accumulation in the weighing industry, it is designed based on the core principle of electromagnetic force compensation, and purpose-built for laboratory scenarios with extreme requirements for accuracy, stability, and data compliance.

Different from ordinary strain gauge electronic balances, the JDT-JS Series achieves ultra-high resolution at the one ten-thousandth of a gram level. It combines ultra-fast response, long-term stability, full-function scientific research adaptability, and traceable data management capabilities, making it a core basic instrument for university scientific research, pharmaceutical R&D, metrology inspection, new material analysis, and other fields.

Core Working Principle

When a weighing sample is placed on the weighing pan, the gravity of the sample drives the coil under the pan to displace in a constant permanent magnetic field. The energized coil generates an electromagnetic force that fully balances the gravity of the sample, and the current passing through the coil is strictly proportional to the weight of the sample. The precise weight of the sample can be converted by accurately measuring the current value, which guarantees the ultra-high accuracy and strong anti-interference performance of the weighing results from the fundamental principle.

Core Technologies and Product Advantages

1. Self-Developed Electromagnetic Force Sensor for Industry-Leading Accuracy

The JDT-JS Series is equipped with a new generation of independently developed electromagnetic force compensation load cell, paired with a high-strength aluminum alloy base, ensuring weighing accuracy and stability at the hardware source. The equipment delivers a maximum actual scale interval of up to 0.0001g (one ten-thousandth of a gram), with repeatability error as low as ±0.0002g and linearity error controlled within ±0.0002g. It enables precise weighing even for trace amounts of powder, liquid, and precious metal samples, fully meeting the requirements of Class I and Class II high-precision metrology standards.

2. Ultra-Fast Stabilization and Intelligent Calibration for Boosted Experimental Efficiency

The equipment has a minimum stabilization time of only 3 seconds, with adjustable stabilization speed, allowing users to obtain accurate weighing data without long waiting. It supports optional dual modes of internal calibration and external calibration, with a built-in fully automatic calibration function. It can automatically compensate for accuracy drift caused by changes in ambient temperature and humidity, eliminating the need for frequent manual calibration, and is perfectly suitable for 24/7 continuous use in laboratory scenarios. The standard warm-up time of the equipment is 30-120 minutes, with an operating temperature range of 15-30℃ for stronger environmental adaptability.

3. Full-Function Scientific Research Configuration Covering Full-Scene Experimental Needs

The equipment integrates rich weighing and analysis functions, fully adaptable to various laboratory workflows:

It supports one-click switching between multiple weighing units including mg/g/ct/oz/lb/gn/ozt/PCS, meeting metrology specifications across different regions and industries worldwide;

It is equipped with core functions such as counting, taring, percentage weighing, differential weighing, density weighing, dynamic weighing, and high/low limit weight detection, covering the full experimental workflow including sample weighing, formula proportioning, sample dispensing, and density testing;

It comes with overload and fault error prompt functions, which can effectively avoid equipment damage caused by misoperation and extend the service life.

4. User-Friendly Structural Design with Convenient Operation and Strong Anti-Interference

It is fitted as standard with a large-size LCD display with black characters on a white background, delivering clear and eye-friendly reading that is easily recognizable even in low-light laboratory environments;

It adopts a three-sided glass door wind shield structure, which effectively eliminates interference from laboratory air flow and vibration on weighing results, while ensuring convenient sample loading and unloading;

The standard 304 stainless steel weighing pan is corrosion-resistant and easy to clean, adaptable to the weighing needs of various samples including chemical reagents and pharmaceutical raw materials;

It supports dual power supply modes: 100-240V wide-range AC power supply and DC12V DC power supply, adaptable to power supply standards in different regions, and can be paired with a backup power supply for uninterrupted operation.

5. Rich Communication Expansion for Full-Process Traceability of Weighing Data

The JDT-JS Series is equipped with a standard RS232 communication interface for direct connection to printers and computer terminals. Optional expansion modules including WIFI, Bluetooth, Ethernet port, Type-B interface, and USB flash drive storage are available, enabling easy automatic storage, export, printing and upload of weighing data. It can be seamlessly connected to the Laboratory Information Management System (LIMS) and enterprise ERP system, meeting the compliance requirements for traceable and archivable weighing data in the pharmaceutical and testing industries.

Core Technical Specifications

Core Application Fields

With its ultra-high accuracy at the one ten-thousandth of a gram level and stable performance, the JDT-JS Series Electromagnetic Force Analytical Balance has been widely used in various scenarios with stringent metering accuracy requirements:

Universities and Research Institutes: Precision sample weighing, experimental data collection, and reagent proportioning in laboratories of chemistry, biology, materials science, environmental science and other disciplines, serving as core basic equipment for scientific research experiments.

Pharmaceutical and Biotechnology Industry: Weighing of active pharmaceutical ingredients (APIs), formulation proportioning of preparations, drug quality testing, and sample preparation for microbiological experiments, fully complying with GMP production regulations and drug testing standards.

Metrology and Quality Inspection Institutions: Quantity value transfer and standard weight calibration in metrology institutes, quality inspection of food, cosmetics, and industrial products by market supervision departments, ensuring the accuracy and compliance of testing data.

New Materials and Chemical Industry: R&D and testing of new energy materials, fine chemical raw materials, and polymer materials, as well as precise proportioning of trace additives, ensuring consistency in product R&D and production.

Jewelry and Precious Metals Industry: Precision weighing of gold, platinum, diamonds, gemstones and other valuables, meeting the high-precision metering requirements of jewelry trading and appraisal testing.

Quality Assurance and Authoritative Compliance

Source Quality Control Guarantee: With over 20 years of in-depth engagement in the weighing industry, Jiangsu Jutian owns an independent 919 R&D Center and intelligent production base. For the JDT-JS Series, strict quality control standards are implemented throughout the entire process from sensor R&D, complete machine production to finished product testing. Each unit undergoes individual accuracy calibration, aging test and full-function inspection before delivery, accompanied by a factory inspection report to ensure compliant equipment performance.

Authoritative Standard Compliance: The equipment complies with OIML international metrology standards, and has passed multiple international certifications including CE and ISO, meeting market access requirements and laboratory certification specifications of countries worldwide.

Self-Developed Core Technology: The core electromagnetic force sensor, weighing algorithm and mainboard of the equipment are all independently developed with complete intellectual property rights, ensuring long-term stable operation of the equipment, and supporting customized development services according to customer needs.

Frequently Asked Questions (FAQ) for Procurement

1. How to choose between internal calibration and external calibration?

The external calibration model requires manual calibration with standard weights, offering higher cost performance, and is suitable for scenarios with standard weights and fixed laboratory workstations. The internal calibration model has a built-in standard weight and fully automatic calibration system, which can complete calibration with one click and automatically compensate for accuracy drift caused by environmental changes. It is more convenient to operate, and suitable for scenarios with high efficiency requirements and no professional metrology personnel.

2. How to select the appropriate model with matching range and accuracy?

You only need to inform us of the maximum sample weight, minimum sample weight, and required accuracy for your weighing applications. Our professional technical team will recommend the most suitable model and provide an exclusive selection scheme for you within 24 hours.

3. Can this balance be connected to our laboratory LIMS system?

Yes. The equipment is equipped with a standard RS232 interface, with optional communication modules such as Ethernet and Bluetooth. It is compatible with mainstream Laboratory Information Management Systems (LIMS). We can also provide customized development services according to your system protocol to realize automatic upload and traceability of weighing data.