How to Adjust the Sample Mass for Different CV
The CAL3K needs to operate at the calibration conditions. Since it is measuring the temperature rise during the burning…
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How to Handle Calibrations
A calibration is needed for every vessel and every operating condition. During a calibration many variables are saved, such as Ambient temperature, Heat capacity and how the vessel ‘reacts’...
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How to Handle Difficult Samples
A difficult sample is one which causes grief. This is indicated when: The results are not consistent, The sample doesn’t ignite, The CAL3K..
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How To Measure Low CV Samples
Low Calorific Values are measured when substances are tested for their energy contribution to a fire. This is required for airline..
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How To Measure Powdery Samples
Powdery substances like Saw dust, flour, or Benzoic Acid powder will burn violently and ‘scatter’ part of the sample material...
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How To Measure Powerful Samples
Powerful samples have a very high CV. The highest (nongaseous) is Kerosene at 48Kj/g. All the fuels are not far behind and fat is 37Kj/g. Note that Dynamite is not powerful but fast burning...
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How To Measure Samples With High Moisture
The moisture content of a sample affects the result directly: a 1% difference in moisture will make a 1% difference in the result. The CAL3K ...
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How To Measure Spiking Accessories
Spiking is the method where a known substance (The Spike) is burned together with the unknown sample to....
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How To Measure The CV Of Cotton Thread
This is a difficult operation because the cotton cannot be ignited without the firing wire (energy). Before the cotton can be measured perform...
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How To Measure the CV of Gelatin Capsules
The gelatin capsule (part number 3K-4-068) is used for powdery substances and during spiking...
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How To Measure the Firing Energy for Different Wire
The sample is ignited by sending a high current through the firing wire which heats the wire to approx. 800 degrees °C. This intern...
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How To Measure Volatile Samples
Volatile samples are alcohols and acetone. Some fuels have a volatile component as well. If the sample evaporates between the weight-in and the ignition then the evaporation must be stopped...
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How to Check a Misfire
The CAL3K measures, in broad terms, the temperature rise in the vessel when a sample is burned. The sample is ignited (fired), and when it doesn’t ignite then we call it a ‘misfire’...
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