Heat Release And Mass Loss Calorimeter

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