Yoke YP Series 0.01 g Precision Electronic Balance

Overview

The Yoke YP Series 0.01 g Precision Electronic Balance is an entry-level analytical-grade weighing instrument engineered for consistent accuracy, operational reliability, and ergonomic usability in routine laboratory, educational, and light industrial environments. Built upon electromagnetic force compensation (EMFC) transduction technology, the YP Series delivers stable mass measurement by dynamically balancing the gravitational load on the pan against a precisely controlled electromagnetic counterforce. This principle ensures high reproducibility across repeated measurements and minimizes drift under ambient temperature fluctuations typical of non-climate-controlled labs. With readability fixed at 10 mg (0.01 g) and maximum capacities spanning from 100 g to 3000 g across nine standardized models (YP1002–YP30002), the series satisfies core weighing requirements for sample preparation, reagent dispensing, quality control checks, and inventory counting—without requiring internal calibration mechanisms or advanced environmental shielding.

Key Features

• Robust mechanical architecture featuring a die-cast aluminum base and reinforced beam assembly, enhancing vibration damping and long-term stability on standard lab benches.
• High-speed stabilization algorithm enabling sub-second response time and rapid settling (<2 s typical) after loading, improving throughput in high-volume workflows.
• Multi-function display with intuitive soft-key navigation supporting unit conversion (g, oz, ct, dwt, grain), piece counting (PCS), and dynamic animal weighing (AW) mode with real-time averaging.
• RS-232C serial interface compliant with standard ASCII protocol, enabling seamless integration with LIMS, Excel, or custom data acquisition software without proprietary drivers.
• Dual-power design accommodating both AC adapter (100–240 V, 50/60 Hz) and rechargeable DC battery operation—ideal for field use, mobile labs, or locations with unstable mains supply.
• IP42-rated enclosure providing protection against dust ingress and incidental splashes during routine cleaning and handling.

Sample Compatibility & Compliance

The YP Series accommodates a broad range of solid and granular samples via its 130 mm diameter stainless-steel weighing pan, compatible with standard weighing boats, beakers, and crucibles up to 120 mm in height. While not certified for Class I or II metrological verification per OIML R76, the balance meets functional performance criteria outlined in ASTM E617 (Standard Specification for Laboratory Weights and Precision Mass Standards) and aligns with USP “Weights and Balances” for non-critical pharmaceutical applications—including bulk ingredient verification, excipient weighing, and tablet sampling. Its external calibration protocol supports traceable adjustment using NIST-traceable Class M2 or better weights, fulfilling basic GLP documentation requirements when combined with user-maintained calibration logs.

Software & Data Management

Data output via RS-232C follows standard asynchronous transmission format (9600 baud, 8N1), allowing direct streaming into spreadsheet applications or validated laboratory informatics systems. No embedded firmware-based audit trail or electronic signature capability is provided; however, the device supports timestamp-free ASCII output that can be captured and archived within externally managed systems compliant with FDA 21 CFR Part 11 when paired with appropriate procedural controls (e.g., defined SOPs for data capture, review, and retention). Firmware does not support remote configuration or over-the-air updates—ensuring system integrity and minimizing cybersecurity exposure vectors common in networked instruments.

Applications

• Routine QC testing in food, chemical, and cosmetics manufacturing (e.g., batch weight verification, additive dosing).
• Student laboratories and vocational training programs requiring durable, low-maintenance instrumentation for foundational metrology education.
• Pharmaceutical compounding and extemporaneous formulation where 10 mg resolution meets USP thresholds for non-sterile preparations.
• Agricultural extension services conducting soil sample mass logging, seed counting, or fertilizer blending.
• Maintenance workshops performing tool and component inventory reconciliation.

FAQ

What calibration standards are recommended for external calibration?
Class M2 or better weights traceable to national metrology institutes (e.g., NIST, PTB, NPL) are recommended. Calibration should be performed at 20% and 100% of full scale prior to first use and after any relocation or mechanical shock.
Is the YP Series suitable for use in regulated GMP environments?
It may be deployed for non-critical weighing tasks under GMP if supported by documented risk assessment, periodic performance verification, and operator training—but it lacks built-in features required for fully auditable electronic records (e.g., user authentication, audit trail, digital signatures).
Can the balance operate continuously on battery power?
Yes; the integrated rechargeable battery supports approximately 8–10 hours of continuous operation under typical usage conditions, with automatic low-battery warning and graceful shutdown to preserve calibration memory.
Does the RS-232 interface support bi-directional communication?
No—it is transmit-only (TX only); no command reception or remote control functionality is implemented in firmware.
Are draft shields or optional accessories available?
Yoke does not supply integrated draft shields for the YP Series; users requiring environmental isolation must implement third-party acrylic enclosures compatible with the 320 × 280 mm footprint and 150 mm height constraint.