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Automatic Microcontroller Based Bomb Calorimeter

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Key Features

  • Latest Integrated Platform based design. Integrates all the various parts of a Bomb Calorimeter Unit on a single platform. Occupies less table space
  • High Accuracy ARM Micro-controller based electronics ensures high stability and improved performance. The hardware features an ultra stable 0.001°C accuracy temperature sensor. A second temperature sensor is also fitted in the Water Jacket to monitor the temperature in the Outer Jacket
  • The powerful software allows a step by step guidance to the user with options of various error messages and solutions in case the experiment is not performing optimally.
  • A large memory for both Water Equivalent and Calorific Values ensures experimental results can be stored and verified later. This gives lot of flexibility to the user
  • Another important feature of the integrated software is the flexibility allowed to the user to configure the experiment as per their requirement.
  • Values of Benzoic Acid, Cotton Thread, Spike etc. are pre-stored by the user as per requirement.
  • The design of the Combustion Bomb has also been improved by adopting a unique Schrader Valve Gas Filling Valve design. Apart from having a comparatively smaller footprint than the older designs, it maintains a higher accuracy and repeatability in GCV results. The other advanced features include a built-in display, memory, fully automatic calculations and step by step guidance to user to perform the experiment. Chiller and Computer Connectivity can be provided as an add-on feature.
  • The instrument has Dual Zone Temperature measurement to ensure all parameters are checked and maintained.
  • The other design feature of the instrument is a Large built-in display and multifunctional keypad which enables the user to easily navigate the various options available in the system
  • The system features options of Auto Experiment Start, Auto Fire, Auto Stop functions. This makes the experiment very fast, accurate and reliable.
  • Auto result calculation at the end of experiment removes any errors of manually calculating the results. These results can be stored for analysis later.
  • New Schrader Valve free design Combustion Bomb
  • The powerful software is Fully User configurable which makes the system very versatile and easy to use.
  • There is a optional Printer port for data printout of the experiment results.
  • The software features Real Time Clock for maintaining Time and Date
  • Each batch of material used for Advance Calorimeter Bomb is put through a series of physical and chemical tests to verify the prescribed standards for fabrication of a high pressure vessel. This ensures the highest standards of customer safety.
  • The Bomb Body and Lid are machined from corrosion resistant Stainless Steel namely Austenitic Steel satisfying the special ringing and bend tests for inter-crystalline corrosion and having good high temperature properties. The interior of the Bomb has been maintained cylindrical throughout its length. The metal seal between the body and the lid is backed by a sealing ring. The Closure Ring is made of Aluminium Bronze or Stainless Steel and hand tightening of the Closure Ring is sufficient to ensure perfect gas tight sealing at a pressure of 300 kg/cm2.
  • The user has a choice of either the standard Schrader Valve based Combustion Bomb or our latest design of Schrader Valve free Combustion Bomb design. This is additionally provided with a Automatic Gas Filling Adaptor which simplifies the Oxygen filling procedure. The valve opens and allows filling of Bomb with Oxygen because of Oxygen pressure for cylinder. It closes when pressure from Oxygen Cylinder is cut off.
  • Extremely Easy to use Push Fit Type Gas Filling System for fast and accurate filling of Oxygen
  • Each Combustion Bomb is individually tested at a pressure of 300 kg/cm2 for a period of 10 minutes for signs of any leakage as per IP guidelines
  • Calorimeter Jacket and Water Jacket fabricated from Chromium plated Copper as per International specifications
  • The introduction of a Safety Relief Valve in the Gas Filling Adaptor ensures additional user safety from accidental Oxygen overfill.
  • New Soft Control Fine Regulating Valve with built-in pressure gauge ensures fatigue free operation of the system
  • Latest Design Compact Stirrer to minimize external heating effect
  • High Mechanical standards and easy controls
  • The instrument is Accurate, Reliable and User Friendly.

Technical Specifications*



Operational Principle


Fundamental Standards

BIS-1350 (Part-2), IP-12/63T

Inner Vessel

Electroplated Copper

Outer Jacket

Electroplated Copper and water Filled

Bomb Design

Either Schrader Valve or Pin Valve Design




Fixed Vessel Design

Automatic Oxygen Filling


Oxygen Filling Time

<1 Minutes

Pressure Regulator



Dual Sensor for both Vessel and Jacket

Temperature Resolution

0.001oC (Main Sensor)


1% with Benzoic Acid


Upto 12000 Cal/g

Temperature Display

Built-in display

Experiment Modes

Selectable Auto or Manual


Compact 12V DC

Bomb Firing

Selectable Auto or Manual

Printer Facility (Temp v/s Time)

Throw external Primter


Selectable Auto or Manual



Testing Time

15-20 Minutes

Operating Temperature


Power Input


Power Requirement

230V+10V, 50 Hz

Note: Due to process of continuous improvements, specifications are subject to change without prior notice


  • Combustion Bomb (Standard)
  • Combustion Bomb (Halogen Resistant)
  • Crucible (Stainless Steel)
  • Crucible (Quartz)
  • Crucible (Platinum)
  • Ignition Wire - Standard (100 pc pack)
  • Ignition Wire (Platinum)
  • Electrode Set
  • Schrader Valve / Pin Valve
  • Main Gas Filling Valve Assembly
  • Auto Gas Filling Adaptor with Pressure Gauge
  • Gas Release Device
  • Cotton Thread
  • Gasket Ring for Combustion Bomb
  • Gasket Ring Set for Adaptor
  • Standard Benzoic Acid Pellets
  • Standard Coal Sample
  • Gas Regulator
  • Pressure Gauges
  • Fuse

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