Heat of combustion is determined in this test method by burning a weighed sample in an oxygen bomb calorimeter under controlled conditions. The heat of combustion is computed from temperature observations before, during and after combustion with proper allowances for thermochemical and heat transfer corrections. Either isothermal or adiabatic calorimeter jackets can be used.
~ Isoperibol Calorimetry
~ Removable Oxygen Pressure Vessel and Bucket
~ 4-6 tests per hour (6 tests requires 2nd vessel and bucket)
~ Operator time per test is approximately 6 minutes
~ 0.1% RSD Precision Class Instrument
~ Accuracy: 6318±19 cal/g for single analysis of standard
~ SD Memory and Ethernet Network Communications
The K88990 features a removable bomb and bucket design. It can achieve the highest level of precision and accuracy of any oxygen bomb calorimeter. It is a good choice for high precision quality control work and for research and development. Multiple bomb choices are also available, expanding its functionality for higher energy releases An isoperibol calorimeter is one where the surrounding jacket is maintained at a constant temperature while the temperature of the bomb and bucket rise as heat is released by the combustion. The K88900 and K88990 Calorimeters are true isoperibol calorimeters. In these implementations, a controlled-temperature jacket completely surrounds the combustion bomb and its "bucket". A microprocessor-based controller monitors both the temperature of the bucket and the jacket and performs the necessary heat leak corrections that result from differences in these two temperatures. These corrections are applied continuously in real-time throughout the test rather than as a final correction based on pre and post-test measurements. Removable bomb calorimeters are the more traditional design most users will recognize. In this design the oxygen bomb and bucket are removed from the calorimeter for loading the sample and filling the bucket with the carefully measured amount of water which absorbs the energy released in the combustion.
Oxygen Pressure Vessel, Alloy 20
Calibration Standards, Range: 5000-8000 Calorie
Maintenance Kit for Pressure Vessel Repair
Conforms to the specifications of: ASTM D240, D1989, D4809, D5468, D5865, E711; ISO 1928; DIN 51900; AS 1038.5; BS1016; JIS M8814
Measurement Type: Isoperibolic
Precision Classification: 0.05 to 0.10%
Number of Vessels: Up to 4
Bucket Filling / Bomb Washing: Manual
Oxygen Filling: Automatic
Memory: 1000 Tests
Printer / Balance Connection: Ethernet or USB
Network Connection: Ethernet
Temperature Resolution: 0.0001°C
Optional Accessories (extra cost):
K88900-1 Water Handling System, 115V 60Hz Includes: 2000mL Pipette, Closed Loop Temperature Controlled Water Supply, Integral Solid State Cooling Unit
K88990-1 Water Handling System, 230V 50/60Hz Includes: 2000mL Pipette, Closed Loop Temperature Controlled Water Supply, Integral Solid State Cooling Unit
K88900-2 Printer w/ Cable
The following link provides additional information from the instruction manual or manufacturer's brochure. Click to open the PDF in a new window or right-click to download it: Koehler K88900 / K88990 Bomb-type Calorimeter
or copy the following into your browser address window: labequip.com/stock/pictures/n791.pdf
Made in USA.
This item ships from Bohemia, NY.