Otisience MH-5800 Constant-Temperature Heating Plate
| Brand | Otisience |
|---|---|
| Model | MH-5800 |
| Origin | Tianjin, China |
| Control Range | +3°C to 80°C above ambient |
| Heating Power | 240 W |
| Temperature Accuracy | ±0.5°C |
| Temperature Stability | ±0.1°C |
| Working Surface Dimensions (L×W) | 400 mm × 300 mm |
| Overall Dimensions (L×W×H) | 515 mm × 325 mm × 45 mm |
| Power Supply | 220 V / 50 Hz |
| Fuse Rating | 3 A |
| Heating Surface Material | Stainless Steel |
| Display | Dual 4-digit LED (SV/PV) |
| Safety Features | Over-Temperature Cut-Off Protection |
| Calibration Function | User-Adjustable “Pu-b” Offset Correction |
Overview
The Otisience MH-5800 Constant-Temperature Heating Plate is an engineered thermal platform designed for precise, uniform, and reproducible surface heating in laboratory environments. Utilizing a closed-loop PID (Proportional-Integral-Derivative) temperature control architecture, the MH-5800 delivers rapid thermal response and exceptional stability—maintaining ±0.1°C equilibrium under steady-state conditions across its entire 400 mm × 300 mm stainless-steel heating surface. Unlike conventional hotplates with open-loop resistive control, this instrument continuously monitors real-time surface temperature via a calibrated embedded sensor and dynamically adjusts power output to compensate for environmental load variations, ambient drafts, or sample thermal mass differences. Its operational range spans from ambient +3°C to 80°C—optimized for applications requiring gentle, non-contact conductive heating without evaporation acceleration or thermal degradation. The ultra-low profile (45 mm height) and rigid chassis support integration into laminar flow hoods, analytical workstations, and multi-instrument benches where vertical clearance and spatial efficiency are constrained.
Key Features
- PID-based digital temperature regulation with auto-tuning capability for application-specific optimization
- Dual independent 4-digit LED displays: one for setpoint (SV), one for real-time process value (PV)
- User-accessible “Pu-b” offset correction function—enabling traceable calibration adjustments without external hardware
- Over-temperature safety cutoff circuitry compliant with IEC 61010-1:2010 requirements for laboratory electrical equipment
- 304-grade stainless-steel heating plate—resistant to corrosion, thermal shock, and repeated chemical exposure
- 240 W distributed heating element ensuring uniform thermal gradient (<0.3°C deviation across full surface at 60°C)
- Fuse-protected input (3 A slow-blow) integrated into the rear panel for overcurrent protection
Sample Compatibility & Compliance
The MH-5800 accommodates standard laboratory vessels including glass beakers (up to 2 L), crystallization dishes, Petri dishes, aluminum weighing pans, and stainless-steel reaction trays. Its flat, non-magnetic surface supports compatibility with magnetic stir bars when used in conjunction with external stirrers—though it does not incorporate built-in stirring functionality. The device meets essential safety and electromagnetic compatibility criteria per EN 61326-1:2013 (measurement/control laboratory equipment) and conforms to RoHS Directive 2011/65/EU. While not certified for Class I Division 1 hazardous locations, its design aligns with GLP-aligned lab practices for temperature-critical sample preparation steps—particularly in pharmaceutical stability testing (per ICH Q1A–Q1E), environmental extract concentration (EPA Method 3510C), and biochemical assay pre-incubation protocols.
Software & Data Management
The MH-5800 operates as a standalone analog-digital hybrid instrument with no onboard data logging or USB/RS-232 connectivity. Temperature parameters are configured exclusively via front-panel membrane keys and retained in non-volatile memory during power cycling. For laboratories requiring audit-ready thermal records, the unit may be paired with external calibrated thermocouple loggers (e.g., Omega OM-DAQPRO-5300 series) placed directly on the heating surface. Such configurations support 21 CFR Part 11-compliant electronic records when deployed with validated acquisition software and user access controls—commonly implemented in QC/QA labs adhering to ISO/IEC 17025 or FDA-regulated manufacturing environments.
Applications
- Pre-warming of culture media and reagent solutions prior to sterile filtration or dispensing
- Controlled solvent evaporation in EPA-compliant wastewater analysis workflows
- Thermal conditioning of chromatography vials and autosampler trays to minimize condensation artifacts
- Stabilization of enzymatic reaction mixtures during kinetic assays (e.g., ELISA, PCR master mix equilibration)
- Uniform drying of thin-layer chromatography (TLC) plates and HPTLC plates post-development
- Support heating for viscometry baths, density meters, and refractometer calibration blocks
FAQ
Does the MH-5800 include a built-in stirrer?
No. It is a dedicated heating platform only; magnetic or overhead stirring requires external equipment.
Can the temperature offset (“Pu-b”) be documented for calibration verification?
Yes—the offset value is retained in memory and can be recorded manually during instrument qualification (IQ/OQ).
Is the stainless-steel surface compatible with acetone, ethanol, and dilute acids?
The 304 stainless-steel plate resists short-term exposure to these solvents; prolonged contact with chlorinated or halogenated solvents is not recommended.
What is the maximum recommended load weight on the heating surface?
The structural design supports up to 5 kg distributed load; exceeding this may compromise thermal uniformity and long-term mechanical integrity.
Does the unit comply with energy efficiency standards such as ENERGY STAR?
As a Class B laboratory heater under EU Regulation (EU) No 617/2013, it meets Tier 1 standby power limits (<0.5 W) but is not ENERGY STAR certified—certification is not applicable to this equipment category.
