> CARBOLITE
U.K.

CARBOLITE established in 1938, has over 60 years experience in the design & manufacture of electric laboratory & industrial furnaces. The product range includes Chamber Furnaces, Ashing & Burn-off Furnaces, Tube Furnaces, Cupellation Furnaces and other Furnaces for Special Analytical Applications.

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1100°C Drop Down Door Laboratory Chamber Furnaces (ELF)

  • Maximum operating temperature of 1100°C
  • Powerful free radiating coiled wire elements on both sides of the chamber ensure good temperature uniformity
  • Constructed with rigidised low thermal mass insulation for rapid heating
  • Heats up to operating temperature in a quarter of the time of traditional "slab" designs
  • Hard ceramic hearth provides robust base, which can be replaced in the event of spillage
  • Drop down door can be used as shelf for loading/unloading
  • Postive break door safety switch isolates chamber from power supply, when the door is opened
  • Double skinned construction allows convection air flow to cool the outer case, to conform to EN61010 safety standard
  • Ideal for light duty applications requiring good thermal response
Specification
Model ELF 11/6 ELF 11/14
Max. operating temperature (°C) 1100 1100
Max. continuous temperature (°C) 1000 1000
Capacity (L) 6 14
Chamber dimensions (H x W x D mm) 162 x 180 x 210 210 x 220 x 310
External dimensions (H x W x D mm) * 580 x 410 x 410 630 x 450 x 520
Heat up time (minutes) to 1000°C 35 40
Max. power (W) 2000 2600
Temperature sensor Type K thermocouple Type K thermocouple
* Excluding chimney.

 

1100°C, 1200°C & 1300°C Laboratory Chamber Furnaces (CWF)

  • Maximum operating temperatures of 1100°C, 1200°C or 1300°C
  • Powerful free radiating coiled wire elements on both sides of the chamber ensure good thermal uniformity
  • Heats up to operating temperature in half of the time of traditional "slab" designs
  • Hard wearing refractory insulation inside chamber and around the entrance provides good resistance to abrasion
  • Hard ceramic hearth provides robust base, and can be replaced in the event of spillage
  • Vertical counter-balanced door keeps hot door insulation away from operator
  • Postive break door safety switch isolates chamber from power supply, when the door is opened
  • Double skinned construction allows convection air flow to cool the outer case, to conform to EN61010 safety standard
  • Choice of PID controller or programmers
Specification
Model CWF 5 Litre CWF 13 Litre CWF 23 Litre
Max. operating temperature (°C) 1100 / 1200 / 1300 (Please specify when ordering)
Chamber dimensions (H x W x D mm) 135 x 140 x 250 200 x 200 x 325 235 x 240 x 400
External dimensions (H x W x D mm) 585 x 375 x 485 655 x 435 x 610 705 x 505 x 675
Heat up time (minutes)
1100°C models
1200°C models
1300°C models

30
35
40

55
65
80

40
45
55
Max. power (W) 2400 3100 7250
Temperature sensor
1100°C models
1200°C models
1300°C models

Type K thermocouple
Type K thermocouple
Type K thermocouple


Type K thermocouple
Type R thermocouple
Type R thermocouple


Type K thermocouple
Type K thermocouple
Type K thermocouple

 

1400°C, 1500°C & 1600°C Laboratory Chamber Furnaces (RHF)

  • Maximum operating temperatures of 1400°C, 1500°C & 1600°C
  • Powerful silicon carbide elements located on both sides of the chamber ensure good thermal uniformity
  • Silicon carbide elements can withstand the stress of everyday operation and provide good longevity
  • Hardwearing refractory brick in chamber entrance and hearth provide good resistance to abrasion
  • Elsewhere, lightweight ceramic fibre insulation is used which ensures good energy efficiency and rapid heating
  • Vertical counter-balanced door keeps hot door insulation away from operator
  • Postive break door safety switch isolates chamber from power supply, when the door is opened
  • Double skinned construction allows convection air flow to cool the outer case, to conform to EN61010 safety standard
  • Choice of PID controller or programmers
Specification
Model RHF 3 Litre RHF 8 Litre RHF 15 Litre RHF 35 Litre
Max. operating temperature (°C) 1400 / 1500 / 1600 (Please specify when ordering)
Chamber dimensions
(H x W x D mm)
120 x 120 x 200 170 x 170 x 270 220 x 220 x 305 250 x 300 x 465
External dimensions
(H x W x D mm)
655 x 435 x 610 705 x 505 x 675 810 x 690 x 780 885 x 780 x 945
(1530 x 900 x 1020
for 1600°C model)
Heat up time (minutes)
1400°C models
1500°C models
1600°C models

33
45
55

22
40
60

35
45
58

38
46
180
Max. power (kW) 4.5 8.0 10.0 16.0

 

1700°C & 1800°C Laboratory High Temperature Camber Furnaces (HTF)

  • Maximum operating temperatures of 1700°C or 1800°C
  • Powerful MoSi2 elements located on both sides of the chamber ensure good thermal uniformity
  • Thick diameter MoSi2 elements can withstand the stress of everyday operation and provide good longevity
  • Low thermal mass insulation and good element design is used to ensure energy efficiency and rapid heating
  • Manually operated vertical counter-balanced door keeps hot door insulation away from operator
  • Postive break door safety switch isolates chamber from power supply, when the door is opened
  • Double skinned construction allows fanned air flow to cool the outer case, to conform to EN61010 safety standard
  • Eight segment programmer is fitted as standard, with options for other types
  • Adjustable overtemperature protection is fitted as standard
Specification
Model HTF 17/5 HTF17/10 HTF18/4 HTF18/8 HTF18/15 HTF18/27
Max. operating temperature (°C) 1700 1700 1800 1800 1800 1800
Max. continuous temperature (°C) 1600 1600 1700 1700 1700 1700
Capacity (L) 5.3 10.4 3.7 7.6 15 27
Chamber dimensions
(H x W x D mm)
158 x 150 x 225 232 x 200 x 225 140 x 140 x 190 210 x 190 x 190 220 x 220 x 300 300 x 300 x 300
External dimensions
(H x W x D mm)
565 x 830 x 650 565 x 830 x 650 565 x 830 x 650 565 x 830 x 650 1580 x 690 x 800 1610 x 780 x 945
Heat up time (minutes)
50 44 65 56 70 55
Power rating (W) 4190 5920 4650 6200 9000 18000

 

Ashing (Calcination) Furnaces (AAF)


Trays

  • Maximum operating temperature 1100°C
  • Robust mullite muffle design of 3 & 7 litre models and silicon carbide tiles of
  • 18 litre model offer strong resistance to carbon build up and chemical attack
  • Constant airflow of 4-5 volume changes per minute ensures rapid combustion
  • Pre-heated airflow to maintain excellent temperature uniformity
  • Tall chimney for fume exhaust by convection
  • Vertical counter-balanced door keeps hot door insulation away from operator
  • Postive break door safety switch isolates chamber from power supply, when the door is opened
  • Double skinned construction allows convection air flow to cool the outer case, to conform to EN61010 safety standard
  • Choice of PID controller or programmers
Specification
Model AAF11/3 AAF11/7 AAF11/18
Max. operating temperature (°C) 1100
Chamber dimensions (H x W x D mm) 85 x 150 x 250 90 x 170 x 455 235 x 196 x 400
External dimensions (H x W x D mm) 580 x 370 x 485 650 x 430 x 740 705 x 505 x 675
Height to top of chimney 780 1060 905
Heat up time (minutes) 80 110 60
Max. power (W) 1750 3900 7250

 

1200°C Horizontal Tube Furnaces (GHA)

  • Maximum operating temperature of 1200°C
  • An integral worktube is not fitted and therefore a worktube must be ordered separately
  • Existing customer worktubes can be used - however, the outer diameter & length must be specified at the time of ordering
  • Heating is provided by resistance wire heating elements, semi-embedded in rigidised vacuum formed low thermal mass insulation modules, which when used together with a ceramic worktube ensure excellent thermal uniformity
  • Rapid heat up to operating temperature
  • Optional removable tube adapters allow rapid changes for different size worktubes
  • Can be adapted to allow a non-oxidising atmosphere or vacuum, if required, by fitting an additional worktube and end seals
  • For enhanced thermal uniformity, three zone models are available
Specification
Model GHA
12/300
GHA
12/450
GHA
12/600
GHA
12/750
GHA
12/900
GHA
12/1050
GHA
12/1200
Max. operating temperature (°C) 1200
Min. operating temperature (°C) 800
Max. O.D. of separate worktube (mm) 170
Heated length (mm) 300 450 600 750 900 1050 1200
Overall furnace length (mm) 480 630 780 930 1080 1230 1380
Max. power (kW) 2.34 3.12 3.90 4.68 5.46 6.24 7.02

 

Cupellation (assay) furnaces for the precious metals market (CF)

  • The assay of gold alloys by cupellation is the standard method used by the United Kingdom Assay Offices and a reference laid down by the International Hallmarking Convention
  • The Carbolite range of assay and cupellation furnaces has an international reputation for close temperature uniformity, low heat loss and maximum fume control
  • Maximum operating temperature 1200°C
  • One bench mounted and three floor standing models, with capacities ranging from 15 x cupel #8 up to 90 x cupel #6
  • Silicon carbide heating elements are mounted above and below the work chamber, providing even heating of the cupels
  • Fumes are extracted through an insulated exhaust duct and a removable container, situated below the chimney, collects any condensed lead
  • Incoming air, which is controlled by an adjustable valve at the rear of the furnace, is preheated by passing over the lower elements prior to entering the chamber - ensuring rapid heat transfer and even temperature distribution
  • The work chamber, roof and hearth are lined with silicon carbide tiles which will withstand the corrosive lead fumes emitted during the process
Specification
Model CF15 CF24 CF50 CF60
Type Bench mounted Floor standing Floor standing Floor standing
Max. operating temperature (°C) 1200
Max. continuous temperature (°C) 1200
Temperature Sensor Pt/Pt 13% Ph Type R thermocouple
Chamber dimensions
(H x W x D mm)
125 x 220 x 350 205 x 255 x 460 230 x 350 x 540 250 x 400 x 650
External dimensions
(H x W x D mm)
1050 x 950 x 950 2110 x 1050 x 1070 2100 x 1150 x 1100 2100 x 1200 x 1200
Max. power (kW) 9 14.5 20 31

 

Temperature Controllers for CARBOLITE Furnaces



301 Controller





3216 Controller





3508 Controller





2132 Overtemperatutre Controller

  • 301 Controller
    This three term (PID) microprocessor based temperature controller includes an adjustable ramp rate to setpoint, either up or down, and a process timer of either a controlled process duration or a delayed start.
  • The measured temperature is displayed by large LED's in a wipe clean membrane panel.
  • The temperature setpoint, ramp rate and countdown time are adjusted at the touch of a button

  • 3216P1 Controller
  • An advanced setpoint programming temperature controller with 8 segment pairs, each a ramp and a dwell.
  • This configuration of a ramp followed by a dwell cannot be altered.
  • Provides precise control with an advanced PID control algorithm giving stable straight-line control of the process.
  • Power feedback is used to stabilise the output power and henced the controlled temperature against supply voltage fluctuations.
  • The controller continually corrects for drift and this gives high stability and rapid response to process changes.
  • 3216P5 Controller
  • Like the Eurotherm 3216P1, except that 5 different programs may be stored for later retrieval.
  • The programs cannot be linked.

  • 3508P1 Controller
  • An advanced setpoint programming temperature controller with twenty segments, any of which may be a ramp, a step or a dwell.
  • Housed in a quick release 1/8 din size measuring 48 x 96mm high.
  • Features large numeric and text displays to provide additional information of current status to the user.
  • Provides the same precise control as the 3216P1 model.
  • 3508P10 & 3508P25 Controller
  • Like the 3508P1, but has 10 programs with a total of 50 available segments and 25 programs of 100 respectively.
  • The programs may be linked.

  • 2132 Overtemperature Controller
  • Recommended for use on any unit left unattended overnight
  • Housed in a compact 1/32 din size measuring 24 x 48mm wide or integrated into the 201 control panel
  • The additional control unit uses a separate thermocouple and operates a contactor to shut down the furnace in the event of the set temperature being exceeded
  • The adjustability of the limiting temperature means that the system may be set to protect either the furnace itself, or at a lower temperature a valuable load inside
Che Scientific Co. (Hong Kong) Ltd.
18/F, Unit D, Roxy Industrial Centre, 58-66 Tai Lin Pai Road, Kwai Chung, Hong Kong.
TEL: +(852) 2481 1323    FAX: +(852) 2418 1302
E-mail: sales@chescientific.com     Website: http://www.chescientific.com