Hazardous Area & Process Heating · Immersion Heaters

Flanged Immersion Heaters For Oil | ATEX Hazardous Areas

This range of flanged immersion heaters, manufactured by Chromalox, are suitable for oil heating applications within ATEX certified hazardous areas. The term oil, in this case, covers a variety of viscous fluids…

CategoryMechanical

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Product Overview

Chromalox

This range of flanged immersion heaters, manufactured by Chromalox, are suitable for oil heating applications within ATEX certified hazardous areas. The term oil, in this case, covers a variety of viscous fluids which require a particular watt density in order to avoid damage.

Flanged immersion heaters for oil offer a watts density between 1.2 and 3.9 W/cm² and feature sheathed removable heating elements, but “monotubular” type, set in pockets, to allow the sheath to be removed without emptying the tank. This is particularly useful for large tanks or processes where removing the complete immersion heater would mean the oil would need to be transferred to another tank, leading to unnecessary downtime.

Standard products in this range have PN16 or 150 Ibs ANSI flange, but can be supplied on request, with every standard flanges up to 2500 Ibs.

Chromalox Flanged Immersion Heaters – Features

ATEX Certifications for Hazardous Locations
IEC/CE Certification
IP55, IP66, & IP42 ingress protection ratings
DN or ANSI flange connections
400V 3ph
Gland Plates
Sensor well for thermostat, sensor or cutout
316 Stainless or Incoloy 800 heating sheath
Removable heating elements
Terminal housing standoffs
Also Immersion Heaters for Heating Water

chromalox TRHGB 080 / 100

TRHGB 080 and TRHGB 100 are flameproof immersion heaters with metric flanges, used for medium viscosity oil heating within hazardous areas.

ATEX Certification: ATEX II 2 G – Ex d II C
Temperature Class: T1 to T6
PN16 DN80 or DN100 mild steel flange
AISI 321 sheathed elements
Watts Density : 2 W/cm²
Built in pocket for optional sensor, thermostat, or cutout
Stood off painted, IP55 mild steel terminal enclosure, supplied with 2 cable glands
Voltage 400 V / 3ph

Immersion Heater Specification

Immersion Heater Product Guide

On request:
• Flanges according to standard PN10 / 20 / 25 / 40 / or 50
• Variation with Watts density 1.2 W / sq.cm for heavy oils, or 4.0 W / sq.cm for light oils
• Other sheath materials

chromalox TRHGb

TRHGB are flameproof immersion heaters with sheathed elements on the flange, used to heat oil within hazardous areas.

ATEX Certification: ATEX II 2 G – Ex d II C
Temperature Class: T1 to T6
Stood off stainless steel or mild steel enclosure, Ø 8″ /12″ / 14″ / 16″ / 18″ / 20″ / 26″ / 28″ / or 30″
Flanges from DN125 up to NB30
Mild steel or AISI 321 sheathed elements Ø 16mm
Watts Density: 1.2 / 2 / or 4 W per sq.cm
Feasible output up to 1350 kW

chromalox TRHC/TRHCC

TRHC and TRHCC are flameproof immersion heaters with removable sheathed elements on the flange, used to heat oil within hazardous areas.

TRHC ATEX Certification: ATEX II 2 G – Ex d II B
TRHCC ATEX Certification: ATEX II 2 G – Ex d II C
Temperature Class: T1 to T6
Version with Ø 16 mm removable sheathed elements set in pocket Ø 20 mm
Designed with sheathed heating elements to allow their removal without draining tanks or vessels
Feasible output up to 1350 kW (TRHCC) or 950 kW (TRHC)
Maximum Watts Density : 4 W/cm²

chromalox TDG / TDG-S / TDG-SC

TDG, TDG-S and TDG-SC are flameproof immersion heaters with ceramic core elements, used to heat oil within hazardous areas.

TDG/TDG-SC ATEX Certification: ATEX II 2 G – Ex d II C
TDG/TDG-S ATEX Certification: ATEX II 2 G – Ex d II B
Temperature Class: T1 to T6
Version with pockets Ø 42.2 mm and removable ceramic core elements Ø 32 mm
Feasible output up to 40 kW
Maximum Watts Density : 4 W/cm²

chromoalox FPF

The Chromalox FPF range are ATEX immersion heaters with ANSI flanges, used to heat medium viscosity oil within hazardous areas. These heaters feature both increased safety and flameproof types of explosion protection.

ATEX Certification: ATEX II 2 G – Ex de II C
Temperature Class: T1 to T6
For ambient temperature -50°C +40°C (+60°C with a longer stand off)
Stood-off painted terminal enclosure in cast iron
Built in pocket for optional sensor, thermostat, or cutout
150Ib ANSI Carbon steel flange 2½” or 3”
Ø 11mm Incoloy 800 sheathed elements
Watts density: 1.9 W/cm²
Voltage: 400V / 3ph

Immersion Heater Specification

Immersion Heater Product Guide

Chromalox FPF range of hazardous area immersion heaters are also available with 5”, 6”, 8”, 10” or 12” 150 Ib ANSI carbon steel flange.

On request:
• Standard design on 14” and 16” flanges (output up to 297 kW)
• 300 to 2500 Ib ANSI flanges
• Stainless steel terminal enclosure

Option:
• Safety thermostat with automatic or manual rest
• Pt 100 safety sensor
• Thermocouple for skin temperature safety

Also available with the following watts density:

1.2 W/sq.cm for heavy viscosity oils (range from 4,5 up to 120 kW)
2.3 W/sq.cm for medium viscosity oils (range from 6 up to 180 kW)
3.9 W/sq.cm for light viscosity oils, ethylene glycol, (range from 12 up to 360 kW)

Immersion Heater Product Guide

chromalox FPFr

Chromalox FPFR are ATEX immersion heaters with removable elements, used to heat medium viscosity oil, where heating elements need to be replaced with a minimum of down time and no need to drain down the system, within hazardous areas.

These heaters feature both increased safety and flameproof types of explosion protection.

ATEX Certification: ATEX II 2 G – Ex de II C
Temperature Class: T1 to T6
For ambient temperature -50°C +40°C (+60°C with a longer stand off)
Stood-off painted terminal enclosure in cast iron
150Ib ANSI Carbon steel flange 2½”
Stainless steel sheathed heating elements in mild steel pocket
Built in pocket for optional sensor, thermostat, or cutout
Watts density: 1.9 W/cm²

Immersion Heater Specification

Immersion Heater Product Guide

Like the FPF range, Chromalox FPFR range of hazardous area immersion heaters are also available with 5”, 6”, 8”, 10” or 12” 150 Ib ANSI carbon steel flange.

On request:
• Standard design on 14” flanges (output up to 172 kW)
• 300 to 2500 Ib ANSI flanges
• Stainless steel enclosure

Option:
• Safety thermostat with automatic or manual rest
• Pt 100 safety sensor
• Thermocouple for skin temperature safety

Immersion Heater Product Guide

chromalox exf

Chromalox EXF range are increased safety immersion heaters which are used to heat medium viscosity oil within hazardous areas.

ATEX Certification: ATEX II 2 G – Ex e
Temperature Class: T1 to T6
For Ambient Temperatures: -50°C +40°C (+55°C on request)
Ingress Protection Rating: IP66
Stood-off stainless steel terminal enclosure
150 Ib ANSI carbon steel flange, 4”, 6”, 8”, 10”, or 12”
Ø11 Incoloy 800 sheathed elements
Watts density 1.9 W /sq.cm
Voltage 400V / 3Ph

Note: Also standardized ranges with Watts density:
– 1.2 W/sq.cm for heavy oils (range 3 to 72 kW)
– 2.3 W/sq.cm for medium oils (range 1.5 to 108 kW)
– 3.9 W/sq.cm for light oils, ethylene glycol (range 3 to 216 kW)

On request:
• Standard design on 14” and 16” flanges: output up to 180 kW (1.9 and 2.3 W / sq.cm), or 360 kW (3.9 W / sq.cm)

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Technical Specifications

Category	Mechanical

Chromalox Order Codes		Immersion Heater Specification
Flange Size		Output	Length ‘X’	Cold ‘NC’
DN80	DN100	Output	Length ‘X’	Cold ‘NC’
TRHGB080A002I02	TRHGB100A002I02	2 kW	465 mm	100 mm
TRHGB080A003I02	TRHGB100A003I02	3 kW	630 mm
TRHGB080A004I02	TRHGB100A004I02	4 kW	795 mm
TRHGB080A006I02	TRHGB100A006I02	6 kW	1130 mm
TRHGB080A008I02	TRHGB100A008I02	8 kW	1460 mm
TRHGB080A010I02	TRHGB100A010I02	10 kW	1790 mm	120 mm
TRHGB080A012I02	TRHGB100A012I02	12 kW	2130 mm	120 mm

Temperature Class	T6	T5	T4	T3	T2	T1
‘d’	90 mm	90 mm	90 mm	125 mm	190 mm	240 mm

Flange Size		Output	Length ‘X’
NB 2.5″	NB 3″	Output	Length ‘X’
FPF 00203/12	FPFA 00203/12	2000 W	700 mm
FPF 00303/12	FPFA 00303/12	3000 W	965 mm
FPF 00403/12	FPFA 00403/12	4500 W	1375 mm
FPF 01603/12	FPFA 01603/12	6000 W	1780 mm
FPF 00903/12	FPFA 00903/12	9000 W	2585 mm

Output	Length ‘X’	Flange Size
Output	Length ‘X’	5″	6″	8″	10″
4.5 kW	720 mm	FPFA00406/12	FPF00406/12	–	–
6 kW	915 mm	FPFA00406/12	FPF00606/12	–	–
9 kW	1325 mm	FPFA00906/12	FPF00906/12	–	–
12 kW	640 mm	–	–	FPF01218/12	–
12 kW	1730 mm	FPFA01206/12	FPF01206/12	–	–
15 kW	915 mm	–	FPF01515/12	–	–
15.7 kW	710 mm	–	–	FPF01521/12	–
18 kW	905 mm	–	–	FPF01818/12	–
18 kW	2535 mm	FPFA01806/12	FPF01806/12	–	–
21 kW	505 mm	–	–	–	FPF02142/12
21 kW	905 mm	–	–	FPF02121/12	–
24 kW	640 mm	–	–	–	FPF02436/12
	905 mm	–	–	FPF02424/12	–
	1730 mm	–	FPF02412/12	–	–
27 kW	710 mm	–	–	–	FPF02736/12
	1315 mm	–	–	FPF02718/12
	2535 mm	FPFA02709/12	FPF02709/12	–
30 kW	905 mm	–	–	–	FPF03030/12
30 kW	1730 mm	–	FPF03015/12	–	–
31.5 kW	1315 mm	–	–	FPF03121/12	–
36 kW	1720 mm	–	–	–	FPF03636/12
36 kW	2535 mm	–	FPF03612/12	FPF03618/12	–
42 kW	1720 mm	–	–	FPF04221/12	–
Output	Length ‘X’	6″	8″	10″	12″
45 kW	890 mm	–	–	–	FPF04545/12
	1315 mm	–	–	FPF04530/12	–
	2535 mm	FPF04515/12	–	–	–
48 kW	1720 mm	–	FPF04824/12	–	–
54 kW	890 mm	–	–	–	FPF05454/12
	1315 mm	–	–	FPF05436/12	–
	2525 mm	–	FPF05418/12	–	–
60 kW	1720 mm	–	–	FPF06030/12	–
63 kW	1315 mm	–	–	FPF06342/12	–
63 kW	2525 mm	–	FPF06321/12	–	–
67.5 kW	1300 mm	–	–	–	FPF06745/12
72 kW	1300 mm	–	–	–	FPF07248/12
	1720 mm	–	–	FPF07236/12	–
	2525 mm	–	FPF07424/12	–	–
81 kW	1300 mm	–	–	–	FPF08154/12
81 kW	2525 mm	–	FPF08127/12	–	–
84 kW	1720 mm	–	–	FPF08442/12	–
90 kW	1705 mm	–	–	–	FPF09045/12
99 kW	2525 mm	–	–	FPF09933/12	–
102 kW	1705 mm	–	–	–	FPF10251/12
108 kW	1705 mm	–	–	–	FPF10854/12
108 kW	2525 mm	–	–	FPF10836/12	–
114 kW	1705 mm	–	–	–	FPF11457/12
117 kW	2525 mm	–	–	FPF11739/12	–
120 kW	1705 mm	–	–	–	FPF12060/12
126 kW	2525 mm	–	–	FPF12642/12	–
135 kW	2510 mm	–	–	–	FPF13545/12
144 kW		–	–	–	FPF14448/12
153 kW		–	–	–	FPF15351/12
162 kW		–	–	–	FPF16254/12

Temperature Class	T6	T5	T4	T3	T2	T1
‘d’	90 mm	90 mm	90 mm	125 mm	190 mm	240 mm

Chromalox Order Code	Output	Length ‘X’
FPFR 00303/12	3000 W	970 mm
FPFR 00603/12	6000 W	1830 mm
FPFR 00903/12	9000 W	2670 mm

Output	Length ‘X’	Flange Size				Weight
Output	Length ‘X’	6″	8″	10″	12″	Weight
6 kW	970 mm	FPFR00606/12	–	–	–	21 kg
9 kW		FPFR00901/12	–	–	–	25 kg
12 kW		FPFR01212/12	–	–	–	29 kg
15 kW		–	FPFR01515/12	–	–	40 kg
18 kW	970 mm	–	–	FPFR01810/12	–	57 kg
	1830 mm	FPFR01801/12	–	–	–	37 kg
	2670 mm	FPFR01806/12	–	–	–	41 kg
21 kW	970 mm	–	–	FPFR02121/12	–	60 kg
24 kW	970 mm	–	–	FPFR02424/12	–	64 kg
24 kW	1830 mm	–	FPFR02412/12	–	–	53 kg
27 kW	970 mm	–	–	FPFR02727/12	–	68 kg
27 kW	2670 mm	FPFR02709/12	–	–	–	40 kg
30 kW	1830 mm	–	FPFR03015/12	–	–	60 kg
33 kW	970 mm	–	–	–	FPFR03333/12	93 kg
36 kW	970 mm	–	–	–	FPFR03636/12	96 kg
	1830 mm	–	–	FPFR03618/12	–	81 kg
	2670 mm	–	FPFR03612/12	–	–	69 kg
39 kW	970 mm	–	–	–	FPFR03939/12	100 kg
42 kW	970 mm	–	–	–	FPFR04242/12	104 kg
42 kW	1830 mm	–	–	FPFR04221/12	–	88 kg
45 kW	2670 mm	–	FPFR04515/12	–	–	70 kg
48 kW	1830 mm	–	–	FPFR04824/12	–	96 kg
54 kW	1830 mm	–	–	FPFR05427/12	–	104 kg
54 kW	2670 mm	–	–	FPFR05418/12	–	117 kg
60 kW	1830 mm	–	–	FPFR06030/12	–	111 kg
63 kW	2670 mm	–	–	FPFR06321/12	–	116 kg
66 kW	1830 mm	–	–	–	FPFR06633/12	137 kg
72 kW	1830 mm	–	–	–	FPFR07236/12	144 kg
72 kW	2670 mm	–	–	FPFR07224/12	–	128 kg
78 kW	1830 mm	–	–	–	FPFR07839/12	152 kg
81 kW	2670 mm	–	–	FPFR08127/12	–	140 kg
84 kW	1830 mm	–	–	–	FPFR08442/12	160 kg
90 kW	2670 mm	–	–	FPFR09030/12	–	151 kg
99 kW		–	–	–	FPFR09933/12	180 kg
108 kW		–	–	–	FPFR10836/12	192 kg
117 kW		–	–	–	FPFR11739/12	204 kg
126 kW		–	–	–	FPFR12642/12	216 kg

Output	Length ‘X’	Flange Size
Output	Length ‘X’	4″	6″	8″	10″
3 kW	980 mm	EXF00303/12	–	–	–
4.5 kW	785 mm	–	EXF00406/12	–	–
4.5 kW	1390 mm	EXF00403/12	–	–	–
6 kW	980 mm	–	EXF00606/12	–	–
6 kW	1795 mm	EXF00603/12	–	–	–
9 kW	1390 mm	–	EXF00906/12	–	–
9 kW	2600 mm	EXF00903/12	–	–	–
12 kW	975 mm	–	–	EXF01212/12	–
12 kW	1795 mm	–	EXF01206/12	–	–
13.5 kW	1390 mm	–	EXF01306/12	–	–
15 kW	975 mm	–	–	EXF01515/12	–
18 kW	1385 mm	–	–	EXF01812/12	–
18 kW	2600 mm	–	EXF01806/12	–	–
21 kW	975 mm	–	–	EXF02215/12	EXF02121/12
22.5 kW	1385 mm	–	–	–	–
24 kW	975 mm	–	–	EXF02412/12	EXF02424/12
24 kW	1790 mm	–	–	–	–
27 kW	1385 mm	–	–	–	EXF02718/12
27 kW	2600 mm	–	EXF02709/12	–	–
30 kW	1790 mm	–	–	EXF03015/12	–
31.5 kW	1385 mm	–	–	–	EXF03121/12
Output	Length ‘X’	6″	8″	10″	12″
36 kW	970 mm	–	–	–	EXF03636/12
	1790 mm	–	–	EXF03618/12	–
	2595 mm	–	EXF03612/12	–	–
42 kW	1790 mm	–	–	EXF04221/12	–
45 kW	1380 mm	–	–	–	EXF04530/12
45 kW	2595 mm	–	EXF04515/12	–	–
48 kW	1790 mm	–	–	EXF04824/12	–
54 kW	1315 mm	–	–	–	EXF05436/12
54 kW	2525 mm	–	–	EXF05418/12	–
60 kW	1785 mm	–	–	–	EXF06030/12
63 kW	2595 mm	–	–	EXF06321/12	–
66 kW	1785 mm	–	–	–	EXF06633/12
72 kW	1785 mm	–	–	–	EXF07236/12
72 kW	2595 mm	–	–	EXF02724/12	–
81 kW	1705 mm	–	–	EXF08127/12	–
90 kW	1705 mm	–	–	–	EXF09030/12
99 kW	2525 mm	–	–	–	EXF09933/12
108 kW	1705 mm	–	–	–	EXF10836/12

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Flanged Immersion Heaters For Oil | ATEX Hazardous Areas

Product Overview

Chromalox

chromalox TRHGB 080 / 100

chromalox TRHGb

chromalox TRHC/TRHCC

chromalox TDG / TDG-S / TDG-SC

chromoalox FPF

chromalox FPFr

chromalox exf

Experts in Equipment for Explosive Atmospheres

Technical Specifications

Request Information About This Product

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