FP-MLH Flameproof Mini Line Heaters
Zone 1 or 2 (IIA, IIB, IIC) gas group
Description
The range of flameproof mini line heaters consist of a screw plug or flanged type immersion heater mounted in a thermally insulated heating vessel, and is designed to efficiently transfer heat to a flowing medium (liquid, air or gas). The FP-MLH range is certified for use in hazardous areas where the atmosphere is classified as a Zone 1 or 2 (IIA, IIB, IIC) gas group.
Features
- Certified to ATEX standards
- Weatherproof protected to IP66 or NEMA 4 (FP4-MLH only)
- Choice of built in process temperature sensors and externally adjustable option
- Mild steel or 316 stainless steel vessel
- Suitable for ambient temperatures from -40°C to +40°C (FP-MLH) and -60°C to +60°C (FP4-MLH)
- Standard range of high quality Incoloy or stainless steel rod-type elements, designed for water or withdrawable ceramic core elements, designed for oil
- Maximum allowable working pressure up to 10 barg / 145 psig, subject to design parameters
- Designed for both horizontal and vertical installation (if mounted vertically, terminal box must be located at the bottom)
- FP4-MLH range available with multi approvals
Technical data
Certification | ATEX II 2 G EN 60079-0, EN 60079-1, EN 60079-7, EN 60079-31 Ex d IIC T4 to T6 Gb Zone 1 and 2 CU TR (EAC)*FP4-MLH also certified to ATEX / IECEx, CSA, Inmetro, KGS, CNEx, CCOE
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Enclosure | Cast aluminium alloy with a maximum of one M20 and one M25 cable entry, external and internal earths and screwed terminal cover (FP4-MLH – mild steel or 316 stainless steel)
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Elements | High quality nickel chrome resistance wire compacted in magnesium oxide insulating powder and sheathed in corrosion resistant Incoloy 825/800, 316L stainless steel, withdrawable ceramic core elements housed in mild steel or 316L stainless steel tube
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Pressure | Maximum allowable working pressure up to 10 barg / 145 psig subject to design parameters
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Design Code | Sound Engineering Practice (SEP)
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Vessel | Mild steel or stainless steel
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Insulation | Mineral wool
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Cladding | Coated mild steel or 304 stainless steel
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Voltage | Standard units are normally designed for 220V to 254V (1 phase) or 380 to 440V (3 phase) |
Models
Model | FP-MLH1S | FP-MLH2S | FP-MLH3S | FP-MLH6S | FP-MLH9S | FP-MLH3L | FP-MLH6L | FP-MLH9L | FP-MLH12L | FP-MLHX1 | FP-MLHX2 | FP-MLHX3 |
Loading (kW) |
1 |
2 | 3 | 6 | 9 | 3 | 6 | 9 | 12 | 1 | 2 |
3 |
Dim A (mm) |
475 |
475 | 475 | 475 | 475 | 925 | 925 | 925 | 925 | 925 | 925 |
925 |
BSP/NPT | 1” | 1” | 1” | 1” | 1” | 1” | 1” | 1” | 1” | 1” | 1” | 1” |