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| FINNED STRIP HEATERS |
APPLICATION
: Air-Conditioning,
Stoving Paints, Textiles, Leather Drying
Chambers, Heating-Arrangements. |
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TECHNICAL
DATA : Generally available from
0.5 kw to 3.5 kw, 240 Volt Ac50 Hz single
phase. Operates upto 400° F. Spl.
heater can also be made according to specification
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CONSTRUCTION
: are made of Stainless Steel,
GP Sheathing having the heat Resistance
Chrome nickle 80/20 element protected
under the best insulation to
avoid the leakage of current and to
ensure the long life of the heaters.
Finns *(3”x1.5”), **(3.5”x1.5”)
which increase the output of heat to
the maximum dissipation and having screw
type terminals on one end for proper
connection.
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INSTALLATION
: Intallation with in forced
air only in horizontal and flat position
only
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| FINNED AIR HEATERS
DOUBLE TUBE |
APPLICATION:
Air-conditioning, Electric Ovens, Gases,
Hot Air Chambers
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TECHNICAL
DATA: Generally available from
1.5 KW to 4 KW, 230 volts, AC 50 HZ, Single
phase. Operates upto 550°F. Two L-Clamps
are provided on both ends of heaters for
proper installation. |
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CONSTRUCTION
: Finned Air Heaters are consisting
of two tubuler mineral filled incoloy-800/stainless
steel-321 sheathed elements dia 8mm, in
one unit G.P. Finns (3.5”x1.5”)
are provided for quick dissipation of
Heat. It can be installed in any position
as per space requirements. Its 50% wattage
can be utilized if required. its special
feature-maximum wattage in minimum space.
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INSTALLATION:
With in forced air with thermostat in
any position
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| PLATINUM MODEL WITH
M.S. / S.S. FRAME & THERMAL CUTOUT AND THERMAL
FUSES FOR WINDOW AIR CONDITIONERS, SPLIT AC
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Wattage
: 2.5 - 5.5 kw at 230 V. AC 50/60
Hz |
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Fixing
: Design as per client’s requirement
also |
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| TCO
: Open 55°C and close 35°C
Provided to control the air temperature
through the coil and works automatically
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| TF
: Available in variable temperature
as per client’s requirements generally
required in 115, 170° C |
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| Element
: Nc - 80 / 20 |
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| Frame
: M.S. with insulators supporters |
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| DEFROST HEATERS-HEAT
TRACER, TUBULER TYPE& ALUMINIUM TUBE HEATERS |
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| HEAT TRACER |
Wattage
: 2.5 - 5.5 kw at 230 V. AC 50/60 Hz |
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Fixing
: Design as per client’s requirement
also |
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| TCO
: Open 55°C and close 35°C Provided
to control the air temperature through the coil
and works automatically |
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| TF
: Available in variable temperature as per
client’s requirements generally required in
115, 170° C |
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| Element
: Nc - 80 / 20 |
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| Frame
: M.S. with insulators supporters |
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| TUBULAR TYPE |
For
Trays, cooling & condensing coils, refrigerators,
Deep Freezers etc. Both ends of heaters are sealed
with silicon leads for connections. Available
in different shapes, Watts, Incoloy sheathing
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| ALUMINUM TUBE
HEATERS |
Working
Condition : Max. rating voltage 250v50-60Hz,
Relevant humid ≤90%
Environment temperature -30ºC~+50ºC,
Max temperature 150ºC
Power Tolerance :
≤5%
Insulation Resistance
(Immersion, Under Normal Temp) :
≥100mA
Insulation Strength
(Immersion, Under Normal Temp) :
1500V 1min no checkmate and flash
Leaking Electric
Current (Immersion, Under Normal Temp) :
≤ 0.02 mA / meter
Terminal Connecting
Strength : 58.8N 1min no abnormity
Central Connecting
Strength : 36N 1min no abnormity
Tube Diameter keeping
Rate When Bended : ≥85 % Overload Test
1.15times Of Rated Voltage, 96h,
Under Working Temperature
: Fulfil with 1.2.3. demands after test
Tube Size :
Diameter 4.5 or 6.35 mm
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| DUCT
HEATERS |
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| APPLICATION
: Air-conditioning, High Temperature
Batteries, Load Bank of Generators, Industrial Drying
Ovens, Heat Treatment |
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| TYPE
: Standard Slip-in-type, Flange-in-type |
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FEATURES
: Constructed as standard units. Tailored
to suit customer’s specific requirement.
Designed for operation in temperature condition
upto 950 ° F. Suitable for use in relative
humidity upto 90%
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CONSTRUCTION
: Incoloy-800/Stainless steel-321 sheathed
tubular elements with /without finns.
U/M shape elements are mounted on a detachable
terminal plate using galvanized retainers.
A mounting flange permits attachment to the ductwork.
Individual Elements are easily replaced or interchanged.
Where the application calls for a higher operating
temperature, the case is constructed from heat
resisting steels. A thermal cutout fitted for
protection against over heating. Thermostat control,
contractor and fan interlock device Available
as optional extras.
Moiture/explosion resistant covers (flame proof)
and elements are also available.
Heating Element shall be open coil 80% nickle
20% chrome type Resistance wire coils shall be
machine crimped in to stainless steel Terminals
are supported by ceramic bushings staked in to
supporting brackets
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INSTALLATION
: Heaters are designed for easy installation
in forced clean air ducts with the correct direction
of airflow.
Elements are installed at staggered position for
maximum Life.
Wiring should be made with heat resisting wires.
The unit screw or bolt should be placed through
the flange on the heaters.
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WHEN
ORDERING : Specify catalogue no., CFM,
inlet outlet temperature/ kilowatts/ three phase
number of switching steps/ controls and quantity
required.
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Explosion proof &
corrosion-resistant |
| DUCT HEATERS
FOR WET, DUSTY AND CORROSIVE AREAS |
Daspass
offers a wide selection of custom built electric
duct heater designs for outdoor, wet, dusty and
explosion corrosive areas. Typical applications
include use with roof top air-handling unit, in
wash down areas such as food processing plants,
wet and humid spaces near indoor swimming pools
and marine or casino boat applications including
shipboard use. |
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| PROCESS AIR HEATERS
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 For
heating process air or gases up to 1250°F
Open
coil, tubular and finned tubular designs available
100
assembly stock designs for quick delivery
Built-in
or remote control panels
Standard
ratings up to 3000 KW;
custom
applications to 9,000 KW
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ENGINEERING
DATA
The following load calculations and recommended operating
ranges are based on standard 75°F entering air (comforting
heating) Consult factory for other applications.
1. Conversion: 1KW= 3413 B.T.U.
2. Load Requirement: KW= (cubic feet per Min. x Temperature
Rise) / 3160
3 Ohm’s Law: Watts= (Volts)² / Resistance =
Volts x Amps
4. Line Current, 1 phase: Amps= Watts / Volts
5. Line Current, 3 phase: Amps= Watts / (Volts x 1.73)
6. Pressure Drop: Inches= H²O=[(KW / ft²)/760]
x [( velocity in f.p.m.) / 500]²
7. C.F.M. / F.P.M. Velocity VEL./F.P.M.= C.F.M. / (Duct
Area/Ft.²)
8. Relationship KW per sq. ft. KW / sq. ft= KW /[ (Duct
width {inches} x Duct height {inches} ) / 144]
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1. remote control
2. thermal safety devices ( thermal cutout and thermal
fuses)
3. pilot lights / pilot switch / pilot relay
4. magnetic contractor
5. power fusing / circuit breaker
6. flame proof terminal box
7. air flow switch
8. transformer
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9. door inter locking
switch
10. step controller
11. SCR Control
12. fan control relay
13. protective screen
14. time delay between steps
15. pneumatic electric switch
16. insulated control panel / unit |
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| CUT TO LENGTH HEATER
TAPES |
APPLICATION:
Freeze protection (including sprinkler systems,
water lines, gutter and roofs), refrigeration,
hot water temperature maintenance, foodprocessing,
chemical manufacture, pharmaceuticals, refineries,
acidic and petro-chemical plants, power
generation and offshore oil industries. |
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CONSTRUCTION:
Daspass manufactured a range of heater tapes
which can be cut to the exact circuit lengths
on-side, for maximum convenience and minimum
wastage. Robust in construction and available
with braid and oversheath for mechanical
and corrosive protection as required, the
Cut-to-Length tapes are available in two
versions:
ELECTRACE self-regulating
tapes with a variable loading, reducing
power output with increasing temperature.
Tape withstand temperatures form -40°
to 200°C. METERHEAT
zone-parallel tapes, pre-designed to a specific
loading per unit length to provide the same
power outside irrespective of the pipe temperature.
Tape withstand temperatures from -50°
to 260°C. |
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| BLOWER
HEATERS |
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AXIAL
BLOWER HEATERS
Compact powerful fan heaters for industrial/commercial
comfort and process heating. Ideal for bathhouses, warehouses,
offices, canteens and the like areas. Heavy duty construction
for continuous operation. 415V three phase motor. thermostat
switch in built
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| DRUM HEATERS |
Daspass
radiant drum heater has been designed to overcome the
problem to handling and heating 45 gallon drums containing
oil, wax, resin, fats, food products or chemicals. The
specially constructed tubular steel frame of the unit
enables 45 gallon drums to be quickly and simply lifted
into a horizontal dispensing position without the aid
of hoists or ramps. The unit is mobile, being fitted
with four Castor wheels with Optional brake feature
. This enables 45 gallon drums to be readily transported
in stores and production areas.The 6kW heating unit
consists of inconel sheathed heating elements which
are located within a polished aluminum reflector. The
elements are controlled by a 3-heat rotary switch and
the unit is equipped with a heavy duty, metal clad,
shrouded plug and socket, designed so that the mains
supply cable can be readily detached from the unit while
drums are being loaded, transported or unloaded. Other
safety featured incorporeted in the design of the unit
inclume a wire mesh elements guard, a mains-on neon
warning light and drain holes in the polished aluminium
reflector to cope with accidental spillage.
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The
radiant heating unit can be supplied separately or complete
with the wheeled, tubular stand. Standard units are
available for operation on 230/415 volts, 50 Hz AC/DC,
Electricity Supply
Note :This unit
should not be used for heating drums containing highly
inflammable liquids.
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| OUT FLOW HEATER |
| used to
reduce the viscosity of the oil, from main tank to day
tank. Installed on the outlet of main tank which helps
in continuos flow of oil
Construction :
material M.S. flanges, pipes, etc.
Capacity:
9 to 24 kw, 230 volts AC 50 Hz
Length :
27” to 36” long with automatic thermostats
to control the temperature
of range from 60° C. to 110° C
A complete unit with panel board with indicators of
each heaters
Note : Removable Element without draining Tank
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| TANK HEATERS |
used to drain
out the oil from the transporter tanker to the main
tanker in factory available in 6 kw. 230 volts AC 50
Hz with wooden handle |
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| PRE HEATERS |
| installed before
the burner to increase the temperature of oil up to
burning. units have temperature indicators and automatic
controls. |
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HEAT
TRACER
traced / wrapped on pipe line/ valve from 1” to
6”, watts available 12/25/45 watts / meter with
panel board and weather proof junction box at 230 volt
AC 50 Hz
Note:
Commissioning of Heating System is also undertaken
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FINNED AIR HEATERS |
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APPLICATION:
Hot air chamber, equipment, duct heater, batteries,
industrial process air heating, drying unit, decorative
lehr
SHEATH
WATTS DENSITY : (30W/in²)
on tubular sheath, giving (4.7W/in²) over fin plus
tubular sheath.
OPERATING TEMPERATURES
: Maximum permissible
temperature of element when operating is 400°C.
Minimum air velocity of 1 metre / sec. recommended.
CONSTRUCTION :
Continuous spiral MS/SS steel fin crimped to 11.0 mm.
dia. steel sheathed tubular element, dia. over fin 30mm.
FINISH :
Zinced coated / Painted
MOUNTING:
Bushes 16 mm conduit thread by 16 mm long with nuts.
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| CRANK CASE
HEATERS FOR AIR CONDITIONING COMPRESSORS |
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APPLICATION
: Are made from Brass/Stainless
Steel/ Special Steel and used to heat oil in various
makes of following Air Conditioning Compressors. Some
of them are having flanges for fixing in Compressors.
Some heaters have provision for Thermostat and operated
at 230V. AC 50 Hz Kirloskar, Frick , York , Voltas ,
K.G. Khosla, Carrier, Etc. |
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| QUARTZ
HEATERS & CARTRIDGE HEATER |
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Quartz Heaters & Cartridge Heater are used in radiation
and infrared heating; narrow installation space where
high power density is required. Custom Built |
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| EXPLOSION-PROOF
HEATERS |
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Explosion-proof
heaters provide heating in explosive gas and liquid
environment. Depending on mature experience in anti-corrosive
and anti-explosive design, Daspass applies feasible
material and structural design to enhance the heater’s
safety and life expertancy. Custom built, 20 kw. to
200 kw. at 415 volt 3 phase AC 50 Hz
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| SILICON CARBIDE HEATING
ELEMENTS |
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Spiral Type made out of thin walled beta silicon carbide
heating elements useful for intermittently operating
laboratory Furnaces
Rod Heating Elements for use in continuous
Industrial Production Furnace.
Dumbbell Shaped Elements
U-Shaped Elements
Very large sizes upto 44 mm dia and lengths upto 3 Mtrs.
Custom built
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| CIRCULATING / FLOW HEATERS
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APPLICATION:
For Large Heat Output In Water, Oil, Fuel Oil, And Other
Circulating Liquid Solutions. Recommended For Side Arm
Water
Tanks, Jacketed Process Tanks, Fuel Oil Preheaters.
Fuel Oil Heaters Ar Internally Baffled For Maximum Heat
Transfer And Efficiency Custom Built .
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| LEHR HEATERS |
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APPLICATION
: GLASS ANNEALING AND
DECORATIVE LEHRS
DESIGN
FEATURE : The Incoloy
Sheathed Element is compacted with fused magnesia
having in centre helically coiled resistor wire welded
to the steel
pins and bended in U. Semi-Circle shape etc.
The Nichrome/Kanthal A-1 wire coiled as per requirements.
TECHNICAL
DATA :
Maximum recommended sheath
tempereture: 750°
c
watts: 1000,2000,2500,3000,4000,5000
voltage: 230\415
Sheath Diameter:
8.2 mm, 11 mm, 12.5 mm, 15 mm,
SHEATH LENGTH EFFECTIVE
U-TYPE : 24”, 48”, 60”, 72”,
84”, 96”,
STRAIGHT TYPE : 48”, 60”, 72”, 84”
SHEATH LENGTH INEFFECTIVE
U/STRAIGHT TYPE : 15”, 20’, on both terminals
TERMINALS : Screwed Terminals 4mm, 6mm, 88mm, SS
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IMMERSION HEATING UNITS
FOR HOT WATER GENERATORS.
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Elements are made
from incoloy / Stainless Steel / Copper Sheating,
brazed with M.S. flanges suitable for metting flange.
Elements are designed for 70 watts/Sq. Inch maximum.
Available in different wattage from 5 kw to 300 kw.
- 230/440 volts AC. Hz. Elements upto 1000 kw can
be made on order.
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| INDUSTRIAL
WATER IMMERSION HEATERS FOR HOT WATER GENERATORS, TANKS
& BOILERS ETC |
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Made out of Copper
Tube brazed to brass flange and duly nickle plated.
Caution : All
Industrial Water Immersion heaters are meant for heating
water only and these must be fully immersed in water
before putting them in operation.
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| OIL IMMERSION
HEATERS FOR OIL TANKS ETC. |
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Manufactured out
of special steel tube brazed to M.S. Flange provided
with Thermostat pocket. Used for fuel oil heating,
oil circulating, oil jacketting etc.
Caution : To be
fully immersed in oil before putting in operation
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| AIR HEATERS
’U’ TYPE WITH / WITHOUT FINS FOR BAKING CHAMBERS,
OVENS ETC. |
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Air heaters are
manufactured out of high temperature resistance chrome
nickle steel tube to withstand a surface temperature
upto 600°C. Each element to provided with two
adjustable fixing brackets. Fins are provided to enlarge
the heat surface
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| OVER THE
SIDE-ALKALINE/LEAD/ CHEMICAL IMMERSION HEATERS |
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(ALI)
These heaters are used for alkaline cleaning solutions,
citrus juices and very mild acid baths not corrosive
to stainless steel sheet.
(LCI) These heaters
are recommended for nickle, copper or chrome, plating
baths and shulphuric acid solution having not more
than 10% concentration.
Caution: These
heaters are not recommended for any other acid.
(CIT) These heaters
are generally used for plating baths such as nickle,
chrome, gold, silver including ferric and iron chloride
solution bright dips and
nickles containing nigric, Phosphoric and chromic
acids, nitrates, permaganates, persulphats.
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| BOBBIN ACID/STAINLESS
STEEL / LEAD COVERED / SILICA TUBE / GLASS IMMERSION HEATERS
FOR CHEMICAL TANK ETC. |
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These are rewireable
type elements and inserted in the tubing of lead/glass/silica/titanium/stainless
steel etc. Its terminals are covered with cap. fitted
with flange, for installation. Red marks indicate
HOT and COLD protions.
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| OVER THE
SIDE-CHEMICAL IMMERSION HEATERS-TITANIUM SHEATH CASTED |
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(i)
Mineral filled elements are casted in imported titanium
tubes for long life of the heaters
(ii) Specially
designed for easy installations having sealed heavy
terminal box to prevent from moisture and fumes.
Caution: Must
be dipped inside the chemical upto red mark which
indicate shot length.
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| OVER THE
SIDE-CAST IN HEATING ELEMENTS FOR METAL MELTING |
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Tubular elements
are casted into solid cast iron for maximum ruggedness
in melting soft metals such as solder lead, tin babbitt.
Caution :
Recommended for babbitt alloys, not containing more
than 4% copper. Net recommended for zinc,aluminum,
or any other metal in which iron is soluble.
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| BAND HEATERS |
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Cermic/Mica
band heaters design is the result of many years of research,
development and testing for a reliable mica insulated
Cermic band heater that can perform at higher operating
temperatures (in application up to 500° c) essential
to process high temperatures resins, providing long
efficient service necessary for today’s high productivity
of plastic extrudes, injections & blow molding machines.
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| HEAT PROOF CERAMIC BAND
HEATERS WITH SS COVERING |
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Specially
designed and engineered models to meet the ever increasing
demand for energy conservation and to improve operations
efficiency, capable of generating higher temperatures
essential to process today’s high temperature
resins. Energy Conservation is achieved by using thick
Ceramic fiber insulating blanket on surface increasing
the overall outer diameter by 2” (minimum length
required is 4”) power consumption up to 30% because
of low thermal conductivity of the ceramic fib, insulation,
the external surface temperature of the insulation plus
band heaters are approximately 80° C while running
the inside surface temperature at 300°C. Available
in different watts. Custom Built
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| ALUMINIUM CAST HEATER |
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APPLICATION
: Widely used in extruders, laminating equipment,
lnjections moulding, vacuum forming, extrusion die heads,
compression moulding blow moulding, heat sealers, food
processing, laboratory equipment, tyre making and etc.
CONSTRUCTION : Where
uniform heat distribution and efficiency is important.
Cast-In Heaters provide for better results. The high
thermal conductivity of aluminum (aluminum bronze) allows
precisely uniform temperature to be applied to the component
surface, elevating hot or cold spots that may effect
the equipments performance.
TYPE OF CAST-IN HEATERS:
Air cooled cast-in heaters
Water cooled cast-in heaters
Cast-in Plate & Round heaters
”L” and ”U” shaped cast-in
heaters
Customized designed cast-in heaters
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| SPACE HEATERS |
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Space
Heaters are ideal for prevention of condensation, corrosion.
Leakage currents in L.T & H.T. Switchgear panel
boards, electronic instruments sheathed cartridge heating
element in perforated sheet metal enclosure. A blackodized
finish ensures rapid heat dissipation.
A 2x2.5 mm² porcelain terminal block is provided
for electrical connection. installation can be done
in vertical or horizontal position, although horizontal
mounting is preferred. Distance from surface of panel
should be at least 10 mm.and distance from plastic parts
should be at least 50 mm.
Each heater is tested for following specific tests.
1) High Voltage Test At 2Kv for 1min.
2) Insulation Resistance > 10 Mega Ohms.
3) Power rating within " 10%. |
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