HHP-411 AC100V Heating Plate by AS ONE

Overview

The HHP-411 AC100V Heating Plate is a precision benchtop thermal platform engineered by AS ONE—a Japanese manufacturer with decades of expertise in laboratory-grade thermal instrumentation. Designed for consistent, repeatable heating across diverse scientific and industrial workflows, this unit employs a high-stability PID feedback control system to regulate surface temperature with minimal overshoot and long-term drift. Its ceramic-coated aluminum heating plate delivers uniform thermal distribution across the active surface area, minimizing radial gradients and supporting applications requiring spatial temperature homogeneity—such as solvent evaporation, sample preheating prior to analysis, catalyst activation, and controlled drying of thin films or polymer coatings. The device operates exclusively at AC 100 V, aligning with standard electrical infrastructure in Japan and compatible regions, and is rated for continuous operation up to 400 °C—making it suitable for both routine QC tasks and research-grade thermal conditioning protocols.

Key Features

• PID-controlled temperature regulation with digital setpoint adjustment and real-time display (0.1 °C resolution)
• Ceramic-reinforced aluminum heating surface offering enhanced thermal conductivity and corrosion resistance
• Rapid thermal response: reaches 200 °C in ≤6 minutes, 300 °C in ≤15 minutes, and 400 °C in ≤35 minutes under standard ambient conditions (25 °C, still air)
• Overheat protection circuitry compliant with IEC 61000-4-2/4-4 immunity standards
• Compact footprint (approx. 180 × 180 × 120 mm) optimized for integration into fume hoods, glove boxes, or modular lab benches
• Front-panel LED indicators for power status, heating mode, and fault detection

Sample Compatibility & Compliance

The HHP-411 accommodates standard laboratory vessels—including borosilicate glass beakers (up to 1 L), stainless steel crucibles, and ceramic dishes—without requiring magnetic stirring functionality. Its flat, non-porous surface supports direct contact heating of containers with stable base geometry. The unit complies with JIS B 7902:2018 (Laboratory Equipment – Safety Requirements) and meets electromagnetic compatibility (EMC) requirements per JIS C 61326-1. While not certified for use in explosion-proof environments, its design conforms to general-purpose laboratory safety practices outlined in ISO/IEC 17025:2017 Annex A.3 for equipment used in accredited testing laboratories.

Software & Data Management

The HHP-411 is a standalone analog-digital hybrid instrument with no embedded microprocessor-based data logging or remote interface capability. Temperature setpoints and operational status are managed exclusively via front-panel controls. For traceable thermal process documentation, users may integrate external calibrated thermocouple probes (e.g., Type K or T) connected to validated data acquisition systems compliant with FDA 21 CFR Part 11 requirements. AS ONE provides full calibration documentation upon request, including as-delivered temperature uniformity maps (±2.5 °C across 100 mm diameter at 300 °C) and factory verification reports aligned with ISO/IEC 17025-accredited reference standards.

Applications

• Pre-conditioning of reagents and solvents prior to GC, HPLC, or spectroscopic analysis
• Controlled dehydration of hygroscopic samples in materials science and pharmaceutical stability studies
• Thermal activation of heterogeneous catalysts in synthetic chemistry workflows
• Low-shear heating of viscous polymer melts during rheological sample preparation
• Support heating for hot-stage microscopy and thermal gravimetric analysis (TGA) sample staging
• Calibration verification of infrared thermometers and contact thermometers using NIST-traceable reference points

FAQ

Is the HHP-411 compatible with AC 120 V or AC 230 V power supplies?
No—the HHP-411 is strictly rated for AC 100 V operation and must not be connected to higher-voltage circuits without an appropriately rated step-down transformer.
Does the unit include a built-in temperature probe for closed-loop monitoring?
Yes—it features an integrated Pt100 RTD sensor embedded beneath the heating surface for precise feedback to the PID controller.
Can the HHP-411 be used under inert atmosphere or vacuum conditions?
It is designed for ambient atmospheric operation only; prolonged use under vacuum or inert gas purge is not recommended due to potential thermal insulation effects and unvalidated seal integrity.
What is the recommended maintenance interval for optimal thermal accuracy?
AS ONE recommends annual verification of temperature uniformity and setpoint accuracy using a secondary calibrated thermometer, especially after >500 hours of cumulative operation at ≥350 °C.
Is the heating surface resistant to common organic solvents and mild acids?
The ceramic coating provides resistance to acetone, ethanol, methanol, and dilute acetic acid; however, prolonged exposure to strong oxidizers (e.g., nitric acid) or halogenated solvents is not advised.