AS ONE NINOS NDK-1A-I Digital Hot Plate with PID Temperature Control

Overview

The AS ONE NINOS NDK-1A-I is a precision-engineered digital hot plate designed for laboratory-scale heating applications requiring stable thermal output and programmable temperature control. Built upon a robust microprocessor-based PID (Proportional-Integral-Derivative) control architecture, the unit delivers high reproducibility in temperature maintenance across its full operating range—from ambient +10°C up to 350°C. Its 170 × 170 mm ceramic-coated aluminum heating surface ensures uniform heat distribution and chemical resistance, making it suitable for extended use with glassware, metal vessels, and polymer containers under controlled conditions. Unlike basic analog hot plates, the NDK-1A-I integrates real-time feedback via internal thermistor sensing and supports optional external PT100 probe integration for sample-centric temperature regulation—critical for applications where vessel wall temperature alone is insufficient to represent actual sample thermal state.

Key Features

• Microprocessor-controlled PID temperature regulation with ±1.0°C typical stability at setpoint (load-dependent)
• Backlit LCD display with intuitive menu navigation and real-time parameter visualization
• Four built-in timer modes: ON, OFF, ON/OFF cycling, and SET-based countdown operation
• Multi-step program function supporting up to eight sequential temperature–time segments for unattended thermal profiles
• Dual independent safety circuits: one monitors surface temperature; the other verifies heater continuity and thermal cutoff integrity
• Integrated safety indicator lamp—illuminates only when top plate surface temperature remains below 55°C, providing immediate visual confirmation of safe handling conditions
• Standard alarm signal output (open-collector type) compatible with external PLCs, emergency shutoff relays, or backup heating systems
• RoHS 2-compliant construction (Directive 2015/863/EU), ensuring restricted substance management aligned with EU environmental regulations

Sample Compatibility & Compliance

The NDK-1A-I accommodates standard laboratory vessels including borosilicate glass beakers (up to 2 L capacity), stainless steel reaction flasks, and ceramic crucibles. Its flat, non-porous heating surface resists corrosion from common solvents and mild acids encountered in routine sample preparation, dissolution testing, and evaporation protocols. The device meets essential electrical safety requirements per IEC 61010-1 for laboratory equipment and carries CE marking for conformity with European health, safety, and environmental protection standards. While not certified for hazardous location use (e.g., ATEX or IECEx), it is engineered for general-purpose laboratories operating under ISO/IEC 17025-accredited quality systems. Documentation—including Declaration of Conformity and RoHS compliance statements—is provided with each unit to support audit readiness and procurement traceability.

Software & Data Management

The NDK-1A-I supports optional data acquisition and remote supervision via the dedicated NINOS Data Logger Software (supplied on CD-ROM). When paired with the optional RS-232 communication cable (model: NINOS-COM1), users can log time-stamped temperature readings, export CSV-formatted datasets for statistical analysis, and configure multi-unit synchronization in shared lab environments. The software interface enables validation of thermal profiles against predefined SOPs and facilitates generation of audit-ready reports compliant with GLP and GMP documentation expectations. Although native USB connectivity is not integrated, third-party serial-to-USB adapters may be employed without firmware modification. All logged data retains timestamping synchronized to the host PC clock, satisfying basic 21 CFR Part 11 requirements for electronic record integrity when used within validated workflows.

Applications

• Controlled evaporation of solvents during sample concentration prior to HPLC or GC analysis
• Pre-heating reagents and calibration standards to specified equilibration temperatures
• Supporting gravimetric moisture determination per ASTM D2231 and ISO 787-2
• Thermal conditioning of polymers and composites during rheological pre-treatment
• Stabilization of enzymatic reaction mixtures in biochemical assay development
• Calibration of temperature-sensitive sensors and probes using traceable reference points

FAQ

Can the NDK-1A-I maintain temperature accuracy across different load masses?
Yes—its adaptive PID algorithm dynamically adjusts power delivery based on real-time thermal feedback. Accuracy is typically ±1.0°C at steady state with standardized 500 mL beaker loads; deviations increase marginally with highly insulating or low-thermal-mass vessels.
Is external temperature probe control supported out-of-the-box?
No—the PT100 input is optional and requires separate purchase of the NINOS-Sensor Kit (model: NDK-PT100-OP). Once installed, the unit switches from surface-sensing to direct sample temperature regulation mode.
Does this model support Ethernet or Wi-Fi connectivity?
No—only RS-232 serial communication is natively supported. Network integration requires external serial server hardware and custom middleware configuration.
What is the expected service life of the heating element under continuous operation?
Rated for >10,000 hours of cumulative operation at ≤300°C. Performance degradation accelerates above 330°C; sustained use at maximum 350°C is discouraged without periodic calibration verification.
Are spare parts such as replacement LCD modules available through AS ONE’s global distribution network?
Yes—key subassemblies including display modules, control boards, and ceramic plates are stocked by authorized AS ONE distributors in North America, EMEA, and APAC regions, with lead times averaging 4–6 weeks for non-stock SKUs.