Watlow FLC-16, FLC-25, FLC-40, FLC-51, FLC-2 User manual

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Specialty Heaters
FLUENT® In-line Heaters
Watlow’s FLUENT® in-line fluid heater is a small, lightweight, high-performance heater that can replace both a traditional immersion type heater or a heater wrapped around a tube as part of a thermal system. Watlow’s FLUENT heater is designed as an integrated solution that replaces multiple components in a system. This heater design reduces overall system cost and complexity. Because of its high watt density, it offers ultra-fast response leading to higher system performance. Featuring Watlow’s patented layered heater technology, the heater makes use of its entire surface to produce heat, which optimizes heat transfer and temperature uniformity.
Features and Benefits
Small, lightweight, robust heater construction
• Replaces multiple components in a system
• Reduces overall system size
• Lowers total cost of ownership Patented circuit patterning process
• Facilitates customizable heating profiles
• Enables distributed wattage and/or multiple zones
• Assures precise and repeatable power distribution High watt density, low mass heater
• Contributes to fast response time
• Allows for efficient heat transfer
• Enables on-demand process start-up
Typical Applications
• Hemodialysis fluid heating
• Food cooking equipment
• Semiconductor purge and carrier gas heating
• Ink preheating systems
• On-demand fluid heating
445
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Specialty Heaters
FLUENT In-line Heaters
Technical Information
Specifications
• Substrate tube material: 444 SS
• Fitting and baffle material: 316L SS
• Voltage up to 240V
• Amperage up to 15A per zone
• Resistance tolerance +10%, -5%
• Typical maximum watt densities
• Air 150 W/in2 (23 W/cm2)
• Water 450 W/in2 (70 W/cm2)
• Maximum pressure: 150psi (10.2 bar)
• Maximum temperature: 662°F (350°C) as measured by internal T/C
• UL®/cUL® and CE
Application Orientation
Gas Heating—
(Any orientation)
Inlet
Liquid Heating—
(Heater must be vertical with inlet at the bottom)
Outlet
Outlet
Optional internal baffle to promote turbulent flow and high efficiency
Fast responding, high watt density layered heater circuit
Low profile axial lead exit
Inlet/Outlet Fitting Options
0.520 in.
1
/8 in. Female NPT
Ø 0.520 in.
Ø
3
/8 in.
Ø 0.520 in.
Ø
1
/4 in.
Standard Construction
Inlet Fitting
Inlet
20 AWG UL® 1199 PTFE Insulated Lead Wire
INLET
FLOW DIRECTION
Standard Lead Length 12 in.
Protection Tube Length
0.375 in.
1 in.
24 AWG Type K T/C Wire
OUTLET
1 in.
Protection Tube
Outlet Fitting
446
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Specialty Heaters
FLUENT In-line Heaters
Technical Information
Standard Product Offering: Base Heaters
Protection Tube
Volts Watts
240 500 3.00 (76) 1 210 120 250 4.25 (108) 1 57 240 1,000 4.25 (108) 1 228 120 375 5.25 (133) 1 62 240 1,500 5.25 (133) 1 247 120 500 6.50 (165) 1 63 240 2,000 6.50 (165) 1 250 120 750 6.50 (165) 2 94 240 3,000 6.50 (165) 2 375 120 1,000 7.75 (197) 2 100 240 4,000 7.75 (197) 2 400 240 500 6.50 (165) 1 63
Note: Visit www.watlow.com/fluent for the latest list of standard designs and product information.
Length
in. (mm)
Number of
Heating Circuits
Watt Density
(W/in2)
How to Specify a Standard Product:
• Select a base heater from the chart to the left.
• Choose the desired inlet and outlet fittings from page 446.
Pressure Drop - Air - With Internal Baffle @ 250°C
Note: Internal baffle is required for all gas heating applications.
447
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Specialty Heaters
Pressure Drop - Water - With Baffle
FLUENT In-line Heaters
Technical Information
Pressure Drop - Water - With Internal Baffle
1000
900
800
14
12
700
600
500
400
300
Pressure-Drop (mbar)
200
100
0
0.25 0.5 0.75 1 1.25 1.5 1.75 2 2.25 2.5
Flow (I/min.)
Heater 4.25 in., Fitting
1
in. Heater 4.25 in., Fitting
/
4
3
in. Heater 6.5 in., Fitting
/
8
Pressure Drop - Water - Without Internal Baffle
3
in. Heater 6.5 in., Fitting
/
8
10
8
6
Pressure Drop (PSI)
4
2
0
1
in.
/
4
Heater internal temperature will vary based on flow rate, heater watt density and presence of the internal baffle, which increases turbulent flow. General guidelines for baffle consideration:
• For flow rates below 1 l/min, baffle should always be used to prevent an over-temperature condition.
• For flow rates over 1 l/min, removing the baffle is possible but will result in a higher internal temperature.
448
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