For more than 3 years antsLABTM has built an enviable reputation for innovative design,

advanced technology and outstanding quality in the field of electric furnaces for

research, quality control and plant applications. The Ants philosophy is to match proven design

with quality at every stage. Only the finest

materials are used and every component is

tested throughout production to ensure that our

products operate efficiently over a long working

life.

This brochure contains details of our

range of standard laboratory furnaces,

including Chamber, Tube, and Split Tube

designs.

1

1. Laboratory Chamber Furnace (750oC-1200oC).

2-3

2. Economy Chamber Furnace (750oC – 1150oC).

3

3. High Temperature Chamber Furnace (1200oC-1600oC).

4-5

4. Laboratory Tube Furnace (1200oC-1600oC).

6-7

5. High Temperature Tube Furnace (750oC – 1200oC).

8-9

6. Split Tube Furnace (1200oC – 1600oC).

10

7. Temperature sensing thermocouple and digital display (150oC-1700oC)

7

8. Quartz and Alumina Tubes for

Furnace (750oC – 1700oC)

9

9. Furnace work tube end flanges and

vacuum fittings

11

FURNACE ACCESSORIESFURNACE ACCESSORIESFURNACE ACCESSORIES

Laboratory Chamber Furnaces (750

oC-1200

oC)

A robust range of laboratory furnaces, providing an excellent

level of versatility without compromising quality, safety or

reliability.

All units in this range have a continuous operating

temperature of 1200°C. Heating is provided by two side-wall free

radiating elements manufactured from original Swedish Kanthal

high temperature resistance wire spirals supported on

recrystallized Alumina tubes for optimum uniformity. Free

radiating elements provide option of fast heating the furnace up

to 20oC/min.

The special swivel type door opens outwards keeping the hot face insulation away from the

operator. All units use vacuum formed fiber board low thermal mass insulation for fast, accurate

heating and cooling. The use of double skin construction allows natural air convection to maintain

a cool outer case. An exhaust chimney is fitted on optional basis.

Furnace entrance door is made from hard wearing Alumina bricks to handle wear over long life.

Modular design with easy access to elements & controls simplifies maintenance & servicing.

Optional Extras Metal retorts – A variety of metal retorts are available for use with this range of furnaces. This type of retort is generally used to cater for the following process conditions:

a. To maintain controlled atmospheres within the heated chamber;

b. To protect the heating elements and insulation from chemical attack by aggressive volatiles given off by fluxes, acids, etc.

Four sided heating – This option upgrades the standard two sided heating to four sided heating and is recommended in the following circumstances:

a. For use with metal retorts and ceramic liners;

b. To improve chamber temperature uniformity to meet specific process requirements;

c. To up rate the furnace power to cope with large loads.

2

R-Type thermocouple – This option upgrades the standard K Type (mineral insulated inside Inconel sheath) thermocouple to R-Type thermocouple and is recommended if furnace is going to be used continuously at 1200oC. Over-temperature protection – This option is recommended to protect valuable contents & for unattended operation. Data logging and remote controlled controllers – A range of sophisticated digital controllers, multi-segment programmers and data loggers is available. These can be fitted with RS232 and RS485.

Economy Chamber Furnace (750oC – 1150

oC)

An economical, rapid heating and lightweight furnace

Incorporating a single body furnace design with low thermal

mass insulation for general laboratory purpose.

The control panel is separate from furnace body. With hinge

type door, hard wear resistant Alumina brick door entrance and

original Swedish Kanthal heating elements these furnaces

provide excellent combination of technology, economy and

performance. All units come equipped with standard SSR and

profile controller.

If your process generates significant amounts of corrosive fumes, please discuss your application with our sales department.

Code

Maximum

Temp (oC)

Continuous

Operating

Temp (oC)

Time to

Temp

(minutes)

Internal

Dimension

(mm) hxwxd

External

Dimensions

(mm) hxwxd

Chamber

Capacity

(Lt.)

Sensing

Thermocou-

ple

Power

(kW)

M1S11 1200 1100 55 150x150x200 725x470x475 4.5 K 3.4

M2S11 1200 1100 75 200x200x300 775x520x575 4.5 K 3.8

M1S12 1225 1200 65 150x150x200 725x470x475 12 R 6.2

M2S12 1225 1200 85 200x200x300 775x520x575 12 R 7.0

3

Code

Maximum

Temp (oC)

Continuous

Operating

Temp (oC)

Time to

Temp

(minutes)

Internal

Dimension

(mm) hxwxd

External

Dimensions

(mm) hxwxd

Chamber

Capacity

(Lt.)

Sensing

Thermocou-

ple

Power

(KW)

M1E11 1150 1100 55 150x150x200 450x470x525 4.5 K 3.6

M2E11 1150 1100 75 200x200x300 500x520x625 12 K 6.6

High Temperature Chamber Furnaces (1200oC-1600

oC)

A range of advanced high temperature general purpose chamber furnaces for use in both labora-

tory and light production applications.

Furnace 1200oC – 1400

oC

These models have continuous operating temperatures of 1350°

C and 1400°C. These furnaces are made from low thermal mass

ceramic fibre insulation and silicon carbide elements, which

radiate heat directly onto the workpiece, provide rapid heating

and cooling and low running costs. Recrystallized / Reaction

bonded SiC elements at optimum surface loading arranged in

series parallel arrangement ensure long working life and are

able to withstand the stresses of intermittent operation.

The swivel type door opens outwards keeping the hot face insulation away from the operator. The furnace door entrance is made from wear resistant Alumina bricks to enhance performance. The use of double skin construction allows natural air convection to maintain a cool outer case for maximum operating safety and comfort at highest temperatures of operation. These units are fired using specially developed power supplies to take care of varying resistance

of SiC. elements with time and temperature of operation. Over temperature protection is

available as optional.

Furnace 1400oC – 1600

oC

These models have continuous operating temperatures of 1500°C and 1600°C. These furnaces are made using advanced refractory interior, used in combination with energy efficient low thermal mass insulation and molybdenum disilicide elements, which radiate heat directly onto the workpiece The swivel type door opens outwards keeping the hot face insulation away from the operator. The furnace door entrance is made from wear resistant Alumina bricks to enhance performance. The use of double skin construction allows natural air convection to maintain a cool outer case for maximum operating safety and comfort at highest temperatures of operation. These units are fired using specially developed power supplies to take care of varying resistance

of molybdenum disilicide elements with time and temperature of operation. Over temperature pro-

tection is fitted as standard.

4

Optional Extras

Over-temperature protection – This option is recommended to protect valuable contents &

for unattended operation.

Data logging and remote controlled controllers – A range of sophisticated digital

controllers, multi-segment programmers and data loggers is available. These can be fitted with

RS232 and RS485.

Temperature sensing thermocouple and digital display

(150oC-1700

oC)

We offer all common types of highly accurate thermocouples for monitoring process temperature

and calibrating instruments. These thermocouples are also available with calibration certificate

from a NABL accredited lab. For remote sensing infrared temperature sensors are available.

Along with thermocouple, we also offer appropriate compensating cable and digital display. In

order to inquire about a thermocouple kindly specify temperature range, length of compensating

cable, type of thermocouple head (ceramic / metal) and if

you require digital display.

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Code

Maximum

Temp (oC)

Continuous

Operating

Temp (oC)

Time to

Temp

(minutes)

Internal

Dimension

(mm) hxwxd

External

Dimensions

(mm) hxwxd

Chamber

Capacity

(Lt.)

Sensing

Thermocou-

ple

Power

(kW)

M1S14 1400 1350 135 150x150x250 790x565x570 5.6 R 3.7

M2S14 1400 1350 135 200x200x300 840x615x670 12 R 6.2

M1S14 1425 1400 140 150x150x250 790x565x570 5.6 R 4.3

M2S14 1425 1400 140 200x200x300 840x615x670 12 R 6.7

M1S16 1600 1500 160 150x150x200 760x555x550 4.5 B 4.5

M2S16 1600 1500 160 200x200x300 810x605x650 12 B 6.5

Type

Temperature range (°C)

Continuous Short Term

Low High Low High

J 0 750 -180 800

K 0 1100 -180 1300

R 0 1600 -50 1700

B 200 1700 0 1820

Laboratory Tube Furnace (750oC – 1200

oC)

For laboratory processes requiring the use of a tube furnace, Ants offers a variety of tube diameters and lengths to meet most heat processing requirements.

Furnace design - The design of furnace body makes

use of double skin construction that allows natural air convection to maintain a cool outer case for maximum operating safety and comfort. All models are supplied horizontally as standard, but vertical options are also available.

Furnace work tube - This range of furnaces has a maximum operating temperature of 1200°C. For operation at 1200°C work tube of 80% Alumina is recommended. For operation at 1100oC or less either 80% Alumina or fused quartz work tube is recom-mended.

Furnace heating technology - Heating is provided

by all surrounding free radiating elements manufac-tured from original Swedish Kanthal high temperature resistance wire spirals supported on recrystallized Alumina tubes for optimum uniformity. Free radiating elements provide option of fast heating the furnace upto 20oC/min. In horizontal tube furnaces heating elements are not wound on work tube. This configuration allows easy replacement of work tube and higher continuous working temperature. Since the heated sample does not face the radiation directly from heating element, sample temperature is upto 20oC less than thermocouple temperature which shows temperature outside work tube. In vertical tube furnace heating is provided by a resistance wire element wound on to the ceramic work tube which is an integral part of the furnace.

Furnace insulation - Low thermal mass insulation is used throughout for rapid response rates

and maximum thermal efficiency and stability. A rugged metal sheathed thermocouple is protected from accidental damage and allows full use of the work tube bore. In furnace were work tube is integral part of furnace, a separate work tube is required when furnace is used with an atmosphere or is likely to be contaminated by spillage. Tubes Insulating end plugs to minimise heat loss and thermal gradients is offered as standard.

Over-temperature protection – This option is recommended to protect valuable contents & for

unattended operation.

Data logging and remote controlled controllers – A range of sophisticated digital controllers,

multi-segment programmers and data loggers is available. These can be fitted with RS232, RS485.

6

Optional fittings include:

A wide range of tubes

Gas tight end fittings for work in controlled atmospheres

For increased uniform temperature zone length, three zone versions are available

Vacuum pump and related accessories

R-Type thermocouple – this option upgrades the standard K Type (mineral insulated inside

Inconel sheath) thermocouple to R-Type thermocouple and is recommended if furnaces is going to be used continuously at 1200°C.

Over-temperature protection – This option is recommended to protect valuable contents & for unattended operation.

Data logging and remote controlled controllers – A range of sophisticated digital controllers, multi-segment programmers and data loggers is available. These can be fitted with RS232 and RS485.

Quartz and Alumina Tubes for Furnace (750oC – 1700

oC)

We offer tubes of various diameter and length in materials like Inconel, Fused Quartz, 80% Alumina and Recrystallized Alumina for use as furnace work tubes. Alumina Furnace tubes can be customized, as per requirement they can be made with round bottom or with a close end. To closely fit tube end flanges, the end (or ends) of alumina furnace tube can be made either rough cut or ground. In addition we also offer ground glass standard taper joints, or "ball-and-socket" joints, and also small flanges for sealing. For more information kindly visit www.antslab.co.in. Standard tubes size which are provided with furnaces are given below.

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Code

Maximum

Temp (oC)

Continuous

Operating

Temp (oC)

Time to

Temp

(minutes)

Outer Diameter

of Hot Zone-

Tube (mm)

Length of

Hot Zone

(mm)

External

Dimensions

(mm) hxwxl

Sensing

Thermocou-

ple

Power

(kW)

T1S11 1200 1150 55 40 200 665x445x480 K 2.0

T2S11 1200 1150 70 60 250 685x465x530 K 3.2

T1S12 1225 1200 60 40 200 665x445x480 R 2.5

T2S12 1225 1200 75 60 250 685x465x530 R 3.8

Material OD

(mm)

ID

(mm)

Length (mm)

40+/-1 37+/-1 Upto 2000mm Quartz

60+/-1 55+/-1 Upto 2000mm

80% Alumina 40+/-2 32+/-2 Upto 1500mm

60+/-2 52+/-2 Upto 1500mm

99.7% Recrystal-

lized Alumina

40+/-2 32+/-2 Upto 1500mm

60+/-2 50+/-2 Upto 1500mm

High Temperature Tube Furnace (1200oC – 1600

oC)

Furnace 1200oC – 1400

oC

These models have a continuous operating temperature of 1350°C and 1400°C

Furnace design - The use of double skin construction allows natural air convection to maintain a cool outer case for maximum operating safety and comfort at highest temperatures of operation.

Furnace work tube - This range of furnaces has a maximum operating temperature of 1400°C. For operation at 1400°C and above work tube of 99.5% Alumina is recommended.

Furnace heating technology- Heating is provided by silicon carbide rod elements which are mounted parallel to the work tube; the work tube must be ordered separately. These elements radiate heat directly onto the tube for rapid response rates. Low thermal mass insulation is used throughout for maximum thermal efficiency and stability. Recrystallized / Reaction bonded SiC elements at optimum surface loading arranged in series parallel arrangement ensure long working life and are able to withstand the stresses of intermittent operation. These units are fired using specially developed power supplies to take care of varying resistance of SiC. elements with time and temperature of operation. Over temperature protection is available as optional. Horizontal models are supplied with the controls in the base, whilst vertical versions have a separate console. Insulation plugs & radiation shields are provided as standard to prevent heat loss & improve uniformity.

Furnace 1400oC – 1600

oC

These models have a continuous operating temperature of 1500°C and 1600°C. The furnaces are constructed using high grade insulation materials throughout for rapid response rates and maximum thermal efficiency and stability. Heating is provided by vertically suspended molybdenum disilicide elements. The use of double skin construction allows natural air convection to maintain a cool outer case for maximum operating safety and comfort at highest temperatures of operation. These units are fired using specially developed power supply to take care of varying resistance of molybdenum disilicide elements with time and temperature of operation. Over temperature protection is available as optional.

8

This range of furnaces has a maximum operating temperature of 1600°C. For operation at 1600°C and above work tube of 99.5% recrystallised Alumina is recommended.

Optional fittings include: A wide range of tubes Gas tight end fittings for work in controlled atmospheres For increased uniform temperature zone length, three zone versions are available Vacuum pump and related accessories Over-temperature protection – this option is recommended to protect valuable content for

unattended operation. Data logging and remote controlled controllers – A range of sophisticated digital controllers,

multi-segment programmers and data loggers is available. These can be fitted with RS232,

RS485

Furnace work tube end flanges and vacuum fittings

Tube furnace is recommended for heating sample in controlled atmosphere. To maintain

controlled atmosphere we offer accessories like

1. Matching stainless steel and aluminum

flanges

2. High temperature viton rubber O-rings

3. Various kind of valves like needle and

ball valves

4. SS bellows for connecting the work tube

to vacuum pump

5. Rotary vacuum pump

6. Pirani Gauges (analog and digital)

7. KF couplings, center rings and clamps

8. Rotameter for gas flow measurement

9

Code

Maximum

Temp (oC)

Continuous

Operating

Temp (oC)

Time to

Temp

(minutes)

Outer Diameter

of Hot Zone-

Tube (mm)

Length of

Hot Zone

(mm)

External

Dimensions

(mm) hxwxl

Sensing

Thermocou-

ple

Power

(kW)

T1S11 1400 1350 120 60 250 745x525x645 R 4.0

T2S11 1425 1400 130 60 250 745x525x645 R 4.8

T1S12 1600 1500 150 60 300 755x535x655 B 4.0

Split Tube Furnace (1100oC – 1600

oC)

This enables easy access where work tubes are to be changed between jobs or where the furnace is to be wrapped around the sample for example in tensile test rigs.

Horizontal and Vertical split tube furnace.

This tube furnaces use free radiating wire elements embedded within the insulation of the furnace body. Wire elements in high quality vacuum formed insulation ensure fast heat up, excellent temperature uniformity and short cool down times. The benefit of this design is its flexibility; with the use of tube adapters (refractory blocks) the same furnace can be used with a variety of tube diameters. These furnaces comprise a furnace body which is hinged and split into two halves along its length. This makes exchange of work tubes easier and also enables the furnace to be used with reactors or work tubes where end flanges would make insertion into a non-split furnace difficult. This range of tube furnaces does not include an integral work tube and one must be selected as an additional item. The work tube length is dependent on the application eg. for use with modified atmosphere or vacuum. The use of a separate work tube has the advantage of protecting the heating elements from damage or contamination.

Options (specify these at time of order)

Insulation plugs, gas tight end seals and vacuum connections available

Wide choice of tube diameters and materials is available: eg quartz, ceramic, metal.

Over-temperature control; recommended for unattended operation and to protect a valuable

load

Available with ‘L’ stand for vertical and horizontal use

A range of sophisticated digital controllers, multi-segment programmers and data loggers is

available. These can be fitted with RS232 and RS485.

Horizontal Tube Furnace (1100oC)

Vertical Tube Furnace (1600oC) For your requirements about Split Tube Furnace kindly write to us.

10

ANTS (Our guide)

Ants have been called one of the most successful organisms on Earth. Their numbers

boggle the mind. In terms of biomass (the amount of living matter), ants make up at

least 15 percent of the terrestrial animal biomass.

Their complex, cooperative societies enable them to survive and thrive in conditions

that would challenge any organism. These societies sometimes stretching to miles

have division of labour, communication between individuals, and an ability to solve

complex problems.

ANTS VALUES

Never Give Up

Team Work

Planning and Organization

Humility

Sharing

Looking for an opportunity to serve you

with our quality products and services

Ants Ceramics Pvt. Ltd. Unit No.1, New Jivdani Estate No. 1,

Dhumal Nagar, Off. Western Express Highway, Vasai (East), Thane—401208

Ph.No—0250-6512132, 08600033151