FP-MLH Flameproof Mini Line Heaters
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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
Specifications
| Certification | ATEX  II 2 GEx d IIC T4 to T6 Gb Zone 1 and 2 EN 60079-0, EN 60079-1, EN 60079-7, EN 60079-31 CU TR (EAC) *FP4-MLH also certified to ATEX / IECEx, CSA, Inmetro, KGS, CNEx, CCOE |
|---|---|
| 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) |
| 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 |
| Pressure | Maximum allowable working pressure up to 10 barg / 145 psig subject to design parameters |
| Design Code | Sound Engineering Practice (SEP) |
| Vessel | Mild steel or stainless steel |
| Insulation | Mineral wool |
| Cladding | Coated mild steel or 304 stainless steel |
| Voltage | Standard units are normally designed for 220V to 254V (1 phase) or 380 to 440V (3 phase) |