Heat Release And Mass Loss Calorimeter .
Heat Release And Mass Loss Calorimeter
Description of Heat Release And Mass Loss Calorimeter
The
Heat Release apparatus measures time to ignition, mass loss and
heat-release rate (option) of specimens exposed in the horizontal
orientation to controlled levels of irradiance with an external igniter.
On the front panel, the following are mounted:
Temperature Controller
Load cell controller
Tare button
Control switches comprising four red on/off push-button switches, which operate by firm pressure and light up when activated:
- Power – switches on mains electricity to the unit
- Cone
– switches on the Eurotherm controller. This, in turn, energises a
solid state relay, which switches the power to the cone heater (5kW)
- Ignition – switches on the spark-generator circuit housed in the test chamber base
- Load cell – switches on the Newport controller
Specification
- Manufactured from stainless steel for long life
- Retainer edge frame stainless steel with inside dimension 111 × 111mm, and opening of 94 × 94mm
- Three control thermocouples for the cone heater to maintain accurate heat flux
- Special split shutter mechanism is designed to prevent heating of the sample before the test is started
- Spark
assembly is used in conjunction with the shutter mechanism.
Microswitches are fitted to the spark arm and the shutter mechanism for
safe operation
- Sample weight measurement is by a strain gauge load cell with quick electronic tare facility
- Specimen holder square pan 106 × 106mm at the top, and a height of 25mm, constructed from stainless steel
- Sample size up to 100 × 100mm
- Sample thickness up to 50mm
- Balance sensitivity < 0.1g
- Load capacity up to 2.0kg
- Control unit contains switches for power, ignition, load cell and cone heater
- Temperature controller for ramp and control of cone heater
- 5kW electrical heating element
- Heat flux up to 100 kW/m2
- Heat shield placed between the cone heater and specimen
- Load cell controller with weight ranging facility to improve performance to suit weight of sample (0-500g).
Features
- Fire model manufactured from stainless steel for long life
- Three control thermocouples for the cone heater to maintain accurate heat flux
- Special split shutter mechanism is designed to prevent heating of the sample before the test is started
- Spark
assembly is used in conjunction with the shutter mechanism.
Microswitches are fitted to the spark arm and the shutter mechanism for
safe operation
- Sample weight measurement is by a strain gauge load cell with quick electronic tare facility
- Control unit contains switches for power, ignition, load cell and cone heater
- Temperature controller for ramp and control of cone heater
- Load cell controller with a weight-ranging facility to improve performance to suit weight of sample 0-500g
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