Bomb Calorimeter


Make: Metlor

Model: SL-FT-007

Standard: IS:1448(P-6)

Product Introduction:

A Bomb Calorimeter measures the amount of heat generated when matter is burnt in a sealed chamber in an atmosphere of pure Oxygen gas.

Bomb Calorimeter provides a simple inexpensive yet accurate method to determine the Heat of Combustion, Calorific Value and the Sulphur contents of solids & liquids and fuels. The outfit provided is complete for the analysis as per methods recommended by the Indian Standard Institute (IS: 1359 –1959), British Standard Institute (BS 1016: Part 5:1967) and the Institute of Petroleum (IP 12/63T). Each part of the outfit has been finished and tested according to the specifications laid down by these Institutions.

Microprocessor Bomb Calorimeter Salient Features:

  • Bomb body is machined from corrosion resistant stainless steel alloy
  • Each bomb is tested at a pressure of 300 atm for 10 minutes
  • Offset stirrer precludes heat from motor to Calorimeter Vessel
  • No temperature correction
  • Detection of maximum rise of temperature
  • Windows based software
  • Temperature resolution: ± 0.0010 C
  • Memory Storage: 100 data
  • Battery backup for stirrer and Microprocessor unit (UPS)
  • RS 232C interface to connect with computer
  • Soft touch keypad
  • Auto firing (With software only)
  • LCD display with backlit 16 x 2 characters
  • Easy to handle and operate

The following tasks are Automated with the Microprocessor Bomb Calorimeter with Software:

  • Automatic feeding of Calorific values of ignition wire and cotton thread
  • Automatic firing in the bomb
  • Automatic detection of maximum rise of temperature
  • Automatic calculation of Heat Capacity of Bomb Calorimeter (Equivalent Value)
  • Automatic calculation of Calorific Value of samples
  • Automatic saving of Heat Capacity of Bomb Calorimeter and Calorific Values in summary format
  • Automatic delivery of result data in report format

The Digital Differential Temperature/Firing Unit with Electronic Timer Features:

  • Temperature Indication: 3.5 Digit digital display
  • Differential Temperature range: 0 – 100 C
  • Reading Resolution of temperature: 0.001° C
  • Firing Voltage for Bomb: 12 VAC
  • LED Indication for filament continuity
  • LED Indication for Bomb Combustion
Bomb Calorimeter is supplied with the following items
Combustion BombCotton Reel
Calorimeter VesselStand for Bomb Lid
Combined LidHook for lifting Bomb
StirrerCrucible – 2 nos.
Connecting LeadsGelatine Capsules – 50 nos.
Connecting tube for Oxygen CylinderGas Release Valve
Adjustable SpannerO – Rings for Bomb and Stirrer
Nichrome Ignition Wire (20 M. 36 SWG)Valve for Bomb
Valve KeyPellet Press
Benzoic Acid – 10 TabletsInstruction Manual
Insulated Calorimeter JacketBattery Backup (UPS)
Leads to connect Microprocessor unit to PCComputer with Printer (Optional)
Platinum Wire (Optional)Semi Auto Gas Filling Device (Optional)

Fuel cups (crucible) of Inconel, SS etc. as per IS:1448(P-6) for special applications are also available with us

Principle of Operation:

A known amount of the sample is burnt in a sealed chamber (Bomb). The air is replaced by pure Oxygen. Sample is ignited electrically. As the sample is burnt, heat is produced. The rise in temperature is measured. Since barring the loss of heat, the amount of heat produced by burning the sample must be equal to the amount of heat absorbed by the Bomb Calorimeter assembly. A knowledge of the Energy Equivalent of the Bomb Calorimeter assembly and of the rise in temperature enables one to calculate the heat of combustion of the sample.

W= Energy Equivalent of the calorimeter assembly in calories per degree centigrade

T= Rise in temperature in degree Celsius

H = Heat of combustion of material in calories per gram

M = Mass of the sample burnt in grams

Then W.T = H.M or H = W.T / M

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