704-399-4248 sales@sethermal.com

OVER-THE-SIDE IMMERSION HEATER

The over the side immersion heater offers a wide variety of styles and shapes to meet nearly all needs. Whether you are heating a small pail of water or a large tank of caustic, we have the right product for the job. If standard designs do not match the application, we offer fast delivery on most custom designs. Since direct immersion is 100% efficient and over the side immersion heaters require no tank modification these are the most easily used yet among the most effective means to heat your process. Used in tanks where through-the-wall heaters cannot be installed, portability is required, or where heaters must be removed for cleaning without emptying the tank. Suitable for freeze protection, for heating viscous materials to improve flow, or most open tank applications with proper sheath and watt density selection.

Watt Density Per Application

  • 90 Watts Per Square Inch – For heating clean water only in commercial and/or residential applications. Element life is sacrificed in favor of a low initial heater cost.
  • 60 and 45 Watts Per Square Inch – Industrial water heating – many aqueous solutions which are compatible with steel and Incoloy.
  • 23 and 20 Watts Per Square Inch – For heat transfer oil, cleaners, high temperature air and gas heating.
  • 15 and 12 Watts Per Square Inch For lubricating oils, medium viscosity oils, high temperature air and gas heating.
  • 8 and 6 Watts Per Square Inch – For #5 and #6 fuel oil heating, viscous materials, raw crude oil, residual oils, high temperature air and gas heating.

FEATURES

  • Lightweight and portable
  • Self supporting
  • All compatible materials
  • Stainless steel elements; stainless steel riser and junction box
  • Incoloy elements; stainless steel riser and junction box
  • Steel elements; steel riser and junction box
  • Watertight terminal housing with terminal block for wiring
  • Thermowell for installation of thermostat
  • Sludge legs
  • .430″ diameter elements

OPTIONS

  • Built-in thermostat: 0-100°F, 60-250°F, 50-250°C or 150-550°F
  • Explosion Proof or Moisture Proof enclosures
  • Passivated on wetted surfaces
  • Built in contactors and control transformers
  • Special sizes and ratings
  • Special materials of construction
  • Thermocouple for process control or high limit
  • Various riser pipe heights
OVER THE SIDE -FORMED ELEMENT- TANK SIDE (SOS) SERIES

For industrial water heating and many other aqueous solutions which are generally “clear” and also compatible with both steel and Incoloy

Features

  • Incoloy® 840 sheath
  • Moisture tight PVC housing
  • Stainless Steel bulkhead fittings
  • Compact, low cost
  • Stainless Steel hanging bracket
  • UL & CSA Recognition on elements

     

    STANDARD SIZES BELOW:

48 Watts per sq. inch – Water & Mild Solutions
SOS Series
48 Watts per sq. inch – Water & Mild Solutions
Volts
1-Phase
KW
A
B
Wt.
(lbs.)
240
480
2
14 ⅜
11 ⅞
2
240
480
3
17 ⅞
15 ⅜
2 ½
240
480
4
21 ¾
19 ¼
3
240
480
5
25 ⅝
23 ⅛
3 ½
240
480
6
29 ¼
26 ¾
4
23 Watts per sq. inch – Oils & Stronger Corrosives
23 Watts per sq. inch – Oils & Stronger Corrosives
Volts
1-Phase
KW
A
C
Wt.
(lbs.)
240
480
1
14 ⅜
11 ⅞
2
240
480
1.5
17 ⅞
15 ⅜
2 ½
240
480
2
21 ¾
19 ¼
3
240
480
2.5
25 ⅝
23 ⅛
3 ½
240
480
3
29 ¼
26 ¾
4
OVER THE SIDE - STRAIGHT ELEMENTS - TANK BOTTOM (ol) sERIES

Applications:
Type 304 Stainless Steel with Incoloy® 840 Elements
48 wsi – Water & Mild Solutions
23 wsi – Caustic & Stronger Solutions

Steel Construciton
23 wsi – Oils, Alkali Soaking Solutions & Degreasing Solutions

FEATURES

  • PVC NEMA 4 housing
  • ½” thermowell for optional thermostat
  • 4″ sludge legs below elements
  • All welded & pressure tested construction
  • Moisture sealed riser pipe to avoid condensation
  • Recompacted bends in heaters
6 ELEMENTS
6 ELEMENTS
48 Watts per sq. inch – Stainless Steel Construction
Volts
3-Phase
KW
A
B
C
Wt.
(lbs.)
240
480
6
36″
12″
6″
37
240
480
12
36″
22″
6″
40
240
480
18
36″
29″
6″
44
240
480
24
48″
37″
6″
48
240
480
30
48″
45″
6″
50
240
480
36
48″
52″
6″
52
240
480
40
48″
56″
6″
55
23 Watts per sq. inch – Stainless Steel Construction
Volts
3-Phase
KW
A
B
C
Wt.
(lbs.)
240
480
6
36″
22″
6″
40
240
480
9
36″
29″
6″
44
240
480
12
48″
37″
6″
48
240
480
15
48″
45″
6″
50
240
480
18
48″
52″
6″
52
240
480
20
48″
56″
6″
55
240
480
25
48″
69″
6″
61
23 Watts per sq. inch – Steel Construction
Volts
3-Phase
KW
A
B
C
Wt.
(lbs.)
240
480
6
36″
22″
6″
40
240
480
9
36″
29″
6″
44
240
480
12
48″
37″
6″
48
240
480
15
48″
45″
6″
50
240
480
18
48″
52″
6″
52
240
480
25
48″
69″
6″
61
3 ELEMENTS
3 ELEMENTS
48 Watts per sq. inch – Stainless Steel Construction
Volts
3-Phase
KW
A
B
C
Wt.
(lbs.)
240
480
3
36″
12″
3″
35
240
480
6
36″
22″
3″
38
240
480
9
36″
29″
3″
40
240
480
12
48″
37″
3″
43
240
480
15
48″
45″
3″
44
240
480
18
48″
52″
3″
45
240
480
20
48″
56″
3″
48
23 Watts per sq. inch – Stainless Steel Construction
Volts
3-Phase
KW
A
B
C
Wt.
(lbs.)
240
480
3
36″
22″
3″
38
240
480
4.5
36″
29″
3″
40
240
480
6
48″
37″
3″
43
240
480
7.5
48″
45″
3″
44
240
480
9
48″
52″
3″
45
240
480
10
48″
56″
3″
48
240
480
12.5
48″
69″
3″
54
23 Watts per sq. inch – Steel Construction
Volts
3-Phase
KW
A
B
C
Wt.
(lbs.)
240
480
3
36″
22″
3″
38
240
480
4.5
36″
29″
3″
40
240
480
6
48″
37″
3″
43
240
480
7.5
48″
45″
3″
44
240
480
9
48″
52″
3″
45
240
480
12.5
48″
69″
3″
54
OVER THE SIDE -CURVED ELEMENTS- TANK BOTTOM (OR) SERIES

Type 304 Stainless Steel with Incoloy® 840 Elements
48 wsi – Water & Mild Solutions
23 wsi – Caustic & Stronger Solutions

Steel Construction
23 wsi – Oils, Alkali Soaking Solutions & Degreasing Solutions

Features

  • PVC NEMA 4 housing
  • ½” thermowell for optional thermostat
  • 4″ sludge legs below elements
  • All welded & pressure tested construction
  • Moisture sealed riser pipe to avoid condensation
6 elements
6 ELEMENTS
48 Watts per sq. inch – Stainless Steel Construction
Volts
1-Phase
KW
A
B
Wt.
(lbs.)
240
480
6
36″
16 ¾”
37
240
480
12
36″
19 ½”
40
240
480
18
36″
22″
44
240
480
24
48″
24 ½”
48
240
480
30
48″
27 ¼”
50
240
480
36
48″
29 ½”
52
240
480
40
48″
31″
55
23 Watts per sq. inch – Stainless Steel Construction
Volts
1-Phase
KW
A
B
Wt.
(lbs.)
240
480
6
36″
19 ½”
40
240
480
9
36″
22″
44
240
480
12
48″
24 ½”
48
240
480
15
48″
27 ¼”
50
240
480
18
48″
29 ½”
52
240
480
20
48″
31″
55
240
480
25
48″
34″
61
23 Watts per sq. inch – Steel Construction
Volts
1-Phase
KW
A
B
Wt.
(lbs.)
240
480
6
36″
19 ½”
40
240
480
9
36″
22″
44
240
480
12
48″
24 ½”
48
240
480
15
48″
27 ¼”
50
240
480
18
48″
29 ½”
52
240
480
25
48″
34″
61
3 elements
3 ELEMENTS
48 Watts per sq. inch – Stainless Steel Construction
Volts
1-Phase
KW
A
B
Wt.
(lbs.)
240
480
3
36″
10 ¾”
35
240
480
6
36″
13 ½”
38
240
480
9
36″
16″
40
240
480
12
48″
18 ½”
43
240
480
15
48″
21 ¼”
44
240
480
18
48″
23 ½”
45
240
480
20
48″
25″
48
23 Watts per sq. inch – Stainless Steel Construction
Volts
1-Phase
KW
A
B
Wt.
(lbs.)
240
480
3
36″
13 ½”
38
240
480
4.5
36″
16″
40
240
480
6
48″
18 ½”
43
240
480
7.5
48″
21 ¼”
44
240
480
9
48″
23 ½”
45
240
480
10
48″
25″
48
240
480
12.5
48″
28″
54
23 Watts per sq. inch – Steel Construction
Volts
1-Phase
KW
A
B
Wt.
(lbs.)
240
480
3
36″
13 ½”
38
240
480
4.5
36″
16″
40
240
480
6
48″
18 ½”
43
240
480
7.5
48″
21 ¼”
44
240
480
9
48″
23 ½”
45
240
480
12.5
48″
28″
54
OVER THE SIDE - VERTICAL LOOP (VO) SERIES

FEATURES:

  • Moisture proof terminal enclosure
  • Simple installation
  • Maximum working space in tank due to thin profile

Applications:

Oils, water, mild corrosives

Standard sizes
Sheath Material
Volts
1-Phase
KW
w/in2
Wt.
(lbs.)
STEEL
240
480
5
25
20
240
480
7.5
40
20
COPPER
240
480
5
25
20
240
480
7.5
40
20
INCOLOY® 840
240
480
5
25
20
240
480
7.5
40
20

Over the Side Immersion Options

Series
Used On
Range
No.
Poles
Max.
Amps/Volts
Catalog Number
Moisture Proof
Explosion Proof
SOS, OL & OR
0-100°F
2
25@277V
N4T4
N7T4
SOS, OL & OR
60-250°F
2
25@277V
N4T5
N7T5
SOS, OL & OR
50-250°F
2
21@480V
N4T5R
N7T5R
SOS, OL & OR
150-550°F
2
25@277V
N4T6
N7T6
SOS, OL & OR
150-550°F
2
21@480V
N4T6R
N7T6R

Series Used On
Catalog No.
SOS, OL, OR
N7

Passivated on wetted surfaces
Built in contactors and control transformers
Special sizes and ratings
Special materials of construction
Various riser pipes heights

Calculators

Power Flow Rate Temp Calculator

Calculate the electrical power, flow rate or temperature requirement.
airflow in standard cubic feet per minute
temperature rise in degrees F from the inlet to the exhaust
Watts = SCFM x ΔT/2.5

Temperature Conversion Calculator

Calculate the electrical power, flow rate or temperature requirement.
°F = ((( °C * 9) / 5 ) + 32)
°C = ((( °F - 32) * 5 ) / 9)

Three-Phase Unit Calculator

Fill in two values to find the 3rd.
W = LC * (V * √2)
V = (W / LC) / √2
LC = W / (V * √2)

Single Phase Unit Calculator

Fill in two values to find the 3rd.
W = LC * V
V = LC * W
LC = W / V

Ohms Law Calculator

Fill in two values to find the other two.

O = V / A

O = V² / W

O = W / A²

V = A * O = A * (V/A)

V = √(W * O)

V = W / A

A = V / O

A = W/ V

A = √(W / O)

W = A * V

W = V² / O

W = A² * O

Heat Transfer Through Convection Calculator

ρ = density (lb/ft3)

V = volume flow rate (ft3/hour)

Cp = specific heat (Btu/lb°F)

Ta-Tb = temperature differential (°F)

Q = ρ x V x Cp x (Ta-Tb)


Fill in four values

ρ = density (lb/ft3)
V = volume flow rate (ft3/hour)
Cp = specific heat (Btu/lb°F)
Ta-Tb = TD (°F)
Q = ρ x V x Cp x (Ta-Tb)

ACFM to SCFM

ACFM = airflow in actual cubic feet per minute

P = gage pressure (psi)

T = gas temperature °R = 460 + °F

SCFM = airflow in standard cubic feet per minute


Find Standard Cubic Feet per Minute based on data from your Actual Cubic Feet per Minute Rotameter

airflow in actual cubic feet per minute
gage pressure (psi)
gas temperature °R = 460 + °F
airflow in standard cubic feet per minute

Standard Flow Rate (SCFM) Calculator

Calculate the SCFM.
Actual cubic feet per minute
Actual pounds per square inch at Gauge
Actual temperature in °F. °R = 460 + °F
CFM * (PSI actual / 14.7psi)*(528°R / T actual)

Pressure Conversion

Fill in one value to calculate the other.
PSI = Bar * 14.504
Bar = PSI / 14.504

Mass Flow to volume Metric Flow

Fill in one value to calculate the other two
kg/h = Kilogram Per Hour (lb/min multiply by 27.216)
Lbs/min = Pounds per minute (kg/h divide by 27.216)
SCFM = Standard cubic feet per minute

Power Flow Rate Temp Calculator

Calculate the electrical power, flow rate or temperature requirement.
airflow in standard cubic feet per minute
temperature rise in degrees F from the inlet to the exhaust
Watts = SCFM x ΔT/2.5

Temperature Conversion Calculator

Calculate the electrical power, flow rate or temperature requirement.
°C = ((( °F - 32) * 5 ) / 9)
°F = ((( °C * 9) / 5 ) + 32)

Three-Phase Unit Calculator

Fill in two values to find the 3rd.
W = LC * (V * √2)
V = (W / LC) / √2
LC = W / (V * √2)

Single Phase Unit Calculator

Fill in two values to find the 3rd.
W = LC * V
V = LC * W
LC = W / V

Ohms Law Calculator

Fill in two values to find the other two.

O = V / A

O = V² / W

O = W / A²

V = A * O = A * (V/A)

V = √(W * O)

V = W / A

A = V / O

A = W/ V

A = √(W / O)

W = A * V

W = V² / O

W = A² * O

Heat Transfer Through Convection Calculator

ρ = density (lb/ft3)

V = volume flow rate (ft3/hour)

Cp = specific heat (Btu/lb°F)

Ta-Tb = temperature differential (°F)

Q = ρ x V x Cp x (Ta-Tb)


Fill in four values

ρ = density (lb/ft3)
V = volume flow rate (ft3/hour)
Cp = specific heat (Btu/lb°F)
Ta-Tb = TD (°F)
Q = ρ x V x Cp x (Ta-Tb)

ACFM to SCFM

ACFM = airflow in actual cubic feet per minute

P = gage pressure (psi)

T = gas temperature °R = 460 + °F

SCFM = airflow in standard cubic feet per minute


Find Standard Cubic Feet per Minute based on data from your Actual Cubic Feet per Minute Rotameter

airflow in actual cubic feet per minute
gage pressure (psi)
gas temperature °R = 460 + °F
airflow in standard cubic feet per minute

Standard Flow Rate (SCFM) Calculator

Calculate the SCFM.
Actual cubic feet per minute
Actual pounds per square inch at Gauge
Actual temperature in °F. °R = 460 + °F
CFM * (PSI actual / 14.7psi)*(528°R / T actual)

Pressure Conversion

Fill in one value to calculate the other.
PSI = Bar * 14.504
Bar = PSI / 14.504

Mass Flow to volume Metric Flow

Fill in one value to calculate the other two
Kg/h = Kilogram Per Hour (lb/min multiply by 27.216)
Lbs/min = Pounds per minute (kg/h divide by 27.216)
SCFM = Standard cubic feet per minute