Carbolite

Acid Gas Determinator AGD


Acid Gas Determinator AGD


Designed for the combustion of electrical cable insulation BS 6425: Part 1 and 2 1990 and IEC 754-1: 1994. Inhalation of acidic smoke - rather than burns - is the cause of death of many fire victims. The above standards were introduced to allow measurement of the smoke emissions from burning electrical cables.

In this test, cable samples are heated within a work tube at a programmed rate of rise; four samples can be processed simultaneously. A small flow of air is passed over the samples and then collected and analysed for acidity.

Features:

 Four tube design offers increased working capacity

 Powerful elements provide 1200°C maximum temperature and fast heating - better than 20°C/minute to 1000°C

 Lightweight insulation allows fast cooling between tests

 Digital temperature control offers precise setting of temperature, repeatability and stability. The rate of rise of temperature and maximum temperature can be pre-set. An optional programmer is available to give automatic cooling after the timed hold at maximum temperature

 Optional digital communication with a PC is available if the programmer option is selected. This permits the furnace to be remotely controlled from the PC and the temperature of the control thermocouple can be data logged to provide evidence of the test procedure

 An optional calibrated probe thermocouple and digital indicator can be provided for monitoring the sample temperature within the silica tube

Acid Gas Determinator AGD

 An optional overtemperature protection system is available. Using a separate thermocouple monitoring the control system, this over-rides the main controller and shuts down the furnace until it is reset

 Solid state control - zero voltage switching and rapid cycle time give smooth and reliable control

 Service is aided by diagnostic warning lights, a removable front instrument panel, and easy access to the heating elements and thermocouple

 Stylish and sturdy - the case is made from zinc coated steel, finished in a tough two tone, baked on epoxy/polyester coating. The double skinned construction promotes convected air flow for a cool outer case

PDF

Carbolite Acid Gas Determinator Specifications

Carbolite Acid Gas Determinator Manual



Acid Gas Determinator Diagram
 
Model ADG 12/4
Max Temp (°C) 1200 (°C)
Furnace tubes (included) Four IAP tubes 50 x 60 x 800mm, arranged 2 above 2
Inner tubes (optional) Four clear fused silica (Si02) tubes 41 x 45 x 1000mm
(note: silica tends to devitrify when used above 1000°C)
Heated length 550mm
Heating rate Less than 40 minutes to 800°C
(better than 20°C/min to 1000°C)
Temperature uniformity The temperature at the centre of each of the four silica tubes will be within +-5°C of each other over a 300mm length, with no gas flow (BS 6425 requires +-17.5°C over 300mm with a small gas flow)
Heating elements Resistance wire spirals embedded in the inner surface of vacuum formed ceramic fibre cylinders
Temperature sensor Type R Pt/PT 13%Rh thermocouple
Temperature Control Carbolite 201 panel mounted digital PID controller giving pre-set control of the heating rate and maximum temperature
Power control Solid state relay incorporating zero voltage switching
Power supply 220/240V, 50/60Hz, single phase, 20 amps
External Dimensions 640mm (h) x 800mm (w) x 480mm (d) excluding tubes