IKA C 7000 Basic Configuration Calorimeter
| Brand | IKA |
|---|---|
| Origin | Germany |
| Model | C 7000 |
| Measuring Range (Max) | 30000 J |
| Measurement Mode | Dual-Dry (ISO 1928) |
| Typical Measurement Time | ~3 min |
| Repeatability (1 g benzoic acid, NBS 39i) | 0.2 % RSD |
| Temperature Measurement Resolution | 0.0001 K |
| Max Operating Temperature | 30 °C |
| Cooling Medium | Tap water |
| Cooling Flow Rate | 120–180 L/h |
| Cooling Medium Temp. Range | 12–30 °C |
| Cooling System Working Pressure | ≤9 bar |
| Max Oxygen Pressure | 40 bar |
| Oxygen Bomb Detection | Yes |
| C7010 Combustion Bomb Included | Yes |
| Dimensions (W×D×H) | 310 × 395 × 490 mm |
| Weight | 43 kg |
| Ambient Operating Conditions | 18–30 °C, ≤80 % RH |
| Power Supply | 220–240 V, 50/60 Hz, 260 W |
| Interfaces | RS232 (balance, printer, PC), Centronics (printer) |
Overview
The IKA C 7000 Basic Configuration Calorimeter is a precision dry-mode oxygen bomb calorimeter engineered for rapid, high-reproducibility determination of gross calorific value (GCV) in solid and liquid fuels, foodstuffs, and waste materials. Unlike traditional adiabatic or isoperibol systems, the C 7000 implements a proprietary dual-dry measurement principle compliant with ISO 1928:2021 — eliminating water jackets and thermal equilibration delays. Temperature is measured directly at the combustion chamber wall of the encoded C7010 oxygen bomb via ultra-stable platinum resistance thermometers (PRTs), enabling real-time thermal response tracking with 0.0001 K resolution. This architecture reduces typical analysis time to approximately 3 minutes per sample, significantly accelerating throughput in routine quality control laboratories without compromising metrological integrity.
Key Features
- ISO 1928-compliant dual-dry calorimetry mode ensures traceable, standardized gross heat of combustion reporting
- Integrated C7010 encoded oxygen bomb with automatic recognition — supports up to eight uniquely coded bombs for multi-user or multi-method workflows
- Dedicated C7002 active cooling system using regulated tap water (12–30 °C inlet, 120–180 L/h flow, ≤9 bar pressure) for stable thermal baseline maintenance
- Onboard oxygen management: 40 bar max operating pressure, integrated safety interlocks, and real-time pressure monitoring during charging
- RS232 interfaces for seamless integration with analytical balances (e.g., Mettler Toledo, Sartorius), impact printers (Centronics-compatible), and laboratory PCs
- Robust mechanical design: 43 kg cast-aluminum chassis, vibration-damped base, and EMI-shielded electronics for operation in shared QC environments
Sample Compatibility & Compliance
The C 7000 accommodates standard 1 g–2 g samples in nickel-chromium or quartz crucibles, including coal, coke, biomass pellets, plastics, pharmaceutical excipients, and certified reference materials (e.g., NBS 39i benzoic acid). Its measurement uncertainty profile meets the repeatability requirement of ≤0.2 % RSD (n=10, 1 g NBS 39i), fulfilling ISO 1928’s precision criteria for routine testing. The system supports GLP-aligned documentation through Calwin C5040 software, which logs user ID, timestamp, bomb ID, calibration history, and raw thermogram data — essential for audit readiness under ISO/IEC 17025 and FDA 21 CFR Part 11 (when paired with validated electronic signature modules).
Software & Data Management
Control and data acquisition are managed via the IKA Calwin C5040 software suite — a Windows-based, menu-driven application supporting method configuration, real-time thermogram visualization, automated baseline correction, and GCV calculation per ISO 1928 Annex A. All measurements are stored in a structured local database with export capability to CSV, Excel, or LIMS-compatible formats. Audit trails record operator actions, parameter changes, and calibration events. Optional PDF report generation includes instrument ID, bomb serial number, ambient conditions, and statistical summaries — fully traceable for internal QA reviews or external accreditation assessments.
Applications
- Fuel certification labs performing ASTM D5865 / ISO 1928-compliant coal and biomass energy content testing
- Food and feed analysis for Atwater factor validation and nutritional labeling compliance (e.g., EU Regulation 1169/2011)
- Waste-to-energy facilities quantifying calorific input for combustion efficiency modeling
- Pharmaceutical R&D assessing energetic stability of APIs and excipients via combustion enthalpy profiling
- Academic research in thermochemistry requiring high-temporal-resolution combustion thermograms
FAQ
Is the C 7000 compatible with non-IKA oxygen bombs?
No — only IKA-encoded C7010 and C7020 series oxygen bombs are recognized and supported due to embedded RFID identification and pressure/temperature interface protocols.
Does the system require external chiller units?
No — the C7002 integrated cooling module is designed for direct connection to conditioned tap water within the specified 12–30 °C range; recirculating chillers are not required or recommended.
Can Calwin C5040 software be validated for 21 CFR Part 11 compliance?
Yes — when deployed on validated Windows OS configurations with enabled audit trail, electronic signatures, and role-based access controls, Calwin C5040 meets core technical requirements for Part 11 adherence in regulated environments.
What maintenance intervals are recommended for routine operation?
Oxygen bomb O-rings should be inspected and replaced every 200 firings; temperature sensor calibration is advised annually using NIST-traceable PRT standards; cooling system filters require quarterly cleaning.
Is remote monitoring or network connectivity supported?
The C 7000 operates via point-to-point RS232 only; Ethernet or TCP/IP connectivity is not natively available, though third-party serial-to-Ethernet adapters may be used under validated conditions.
