Wet Process Heating and Cooling Equipment

Process Technology Aquaculture Products - Setting the Standard

Company Commitment

Thermal Overload Protection

Electric Heater Sizing

Temperature Control Sizing

Warranty Policy

Return/Repair Inquiries

Process Technology has taken heating technology one step further. Our innovative aquaculture heater design proves once again our commitment to a higher standard of excellence. Many heater companies make idealistic statements about quality and performance, but at Process Technology we back our claim with action.

• Innovative Design. We’re the first heater company to design and manufacture electric immersion heaters with aquaculture in mind. Our products include more standard features than the competition, at no additional cost.

• Value. Our new heater design delivers the highest value in the industry. Our innovative technology and assembly techniques enable us to provide products at the most competitive prices in the industry.

• Quality. Our reliability has been acknowledged and tested by the people who set the standards. We are CE-compliant and use UL/CSA components in our products. No other products deliver our combination of performance, reliability and safety.

• Service. We have the largest technical support team in the industry. Each member is experienced, knowledgeable and professional. With worldwide distribution, we are ready to serve you any time or any place.

• Safety. Safety is built-in, not added-on. Our products are the safest available at any price. We offer more models with over-temperature protection as standard than any other manufacturer.

Download our Aquaculture Catalog (.PDF file, 932 KB)

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Thermal Overload Protection
Protector 1 Series

The Protector 1 over-temperature control system utilizes a heat sensitive protector to detect overheat conditions. The protector, placed inside a thermowell, positioned in contact with the heater sheath, will cut power to the heater in the event of low liquid level.

HEATER THERMAL PROTECTION CHART
PROTECTOR TYPE	METAL OVER THE SIDE AND FLANGED	METAL L-SHAPED
Replaceable	P1	P1
Resettable	P2	P2

Optional resettable thermal sensor requires special control components, consult factory.

VOLTAGES AVAILABLE (MOST HEATERS AND CONTROLS)

Voltages are designated in Process Technology model numbers as follows:

1=120 volt

2=240 volt

3=380 volt

4=480 volt

5=415 volt

6=600 volt

8=208 volt

Please specify voltage and single or three phase when ordering. Consult factory for other voltages.

WARNING!
IGNITION SOURCE AND SHOCK HAZARD! ELECTRIC IMMERSION HEATERS WILL IGNITE MANY PLASTIC TANKS SUCH AS POLYPROPYLENE AND POLYETHYLENE, AND SUBJECT PERSONNEL TO SHOCK HAZARD IF NOT PROPERLY INSTALLED AND MAINTAINED.

Products listed are designed for service in aquaculture-related (water) applications only, not for use in chemical applications or flammable solutions or solvents.

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Determining Heating Requirements for Electric Immersion Heaters

To determine the heating requirement of a tank, first obtain the following information:

1) Total cubic feet of tank. (Multiply the inside dimensions of the tank in feet - length x width x depth.)
2) Total gallons of water. Multiply by 7.48 the cubic feet of the tank occupied by water. (If the water is normally 6" below the top of the tank, allow for this when figuring.)
3) Average ambient (room) temperature at which tank will be used.
4) Temperature level at which water is to be held.
5) Heat-up time desired.

Losses due to agitation and ventilation should be considered in calculating total kW requirements. After this information is known, the following calculations can be made:

A x 1.0 x 8.35 x B = _______________
3412 x C

D x E = _______________

Add the results of both calculations. The total is the Kilowatt requirement of the tank.

A = Total gallons of solution. One liter = .264 gallons.
B = Difference from ambient temperature and desired water temperature in degrees F.
C = Desired heat-up time (hours).
D = Heat loss of tank. Refer to chart below.
E = Square feet of top of tank. Multiply length x width.

SURFACE LOSSES IN KILOWATTS FROM OPEN HOT WATER TANK (ºF)

75°

.01

80°

.02

85°

.03

Based on 70ºF ambient temperature.

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Amp Calculation for Control Selection

For single phase or two wire power supplies to heaters.

AMP RATING PER POLE* = Total capacity (watts) divided by line voltage
Example: 3500 watts divided by 240 volts = 14.58 Amps

For three phase balanced power supplies (Delta or Wye connections) to heaters using a three-pole contactor.

AMP RATING PER POLE* = Total capacity (watts) divided by (line voltage x 1.73)
Example: 3500 watts divided by (240 amps x 1.73) = 8.43 Amps

Contactor sizing:
*Amp rating per pole x 1.25 = contactor rating

AMPS FOR HEATING LOAD

Heater

Single Phase

Three Phase (Balanced)

Watts

120V

208V

240V

480V

208V

240V

480V

1,000

8.4

4.8

4.2

2.1

2.8

2.5

1.2

1,800

15.0

8.6

7.5

3.8

5.0

4.4

2.2

2,500

20.9

12.0

10.4

5.2

6.9

6.0

3.0

3,500

29.2

16.8

14.6

7.3

9.7

8.4

4.2

5,000

41.7

24.0

20.9

10.4

13.9

12.0

6.0

6,000

50.0

28.9

25.0

12.5

16.7

14.5

7.3

7,500

62.5

36.0

31.7

15.8

20.9

18.1

9.0

10,500

87.5

50.5

43.8

21.9

29.2

25.3

12.6

15,000

125.0

72.1

62.5

31.3

41.7

36.1

18.1

18,000

150.0

86.6

75.0

37.5

50.1

43.4

21.7

This chart provides an easy reference to estimate the kW required to heat a tank. Heat loss from the surface of the water and from the sides of the tank have been taken into account. Find the gallons at the top, move down the chart to the temperature at which you will be heating the water. The number indicated here is the kW required for the heating job. This kW figure assumes a heat-up period of twelve hours; for a six hour heat-up time, simply double the kW figure.

GALLONS

T
E
M
P
50

100

250

500

750

1000

2000

3000

4000

5000

70°

0.15

0.3

0.75

1.5

2.25

3

6

9

12

15

75°

0.2

0.4

1

2

3

4

8

12

16

20

80°

0.25

0.5

1.25

2.5

3.75

5

10

15

20

25

85°

0.3

0.6

1.5

3

4.5

6

12

18

24

30

CAUTION: This chart is for quick estimates only. Use formula above for determining actual heat requirement.

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Warranty

All Process Technology equipment, heaters and controls have been carefully inspected before shipping and are warranted to be free from defects in workmanship and material for a period of one year from date of purchase on a prorated basis. At its option, Process Technology will repair or replace any defects which are exhibited under proper and normal use. Process Technology disclaims any responsibility for misuse, misapplication, negligence or improper installation of equipment. Process Technology makes no warranty or representation regarding the fitness for use or the application of its products by the purchaser.

Please ensure applicability of heater before installation since we cannot guarantee heaters against premature failure due to corrosion caused by unusual conditions over which we have no control, such as:

•    Excessive sludge buildup
•    Stagnant or turbulent flow of the solution
•    Aeration
•    Erosion

Process Technology is not liable for costs incurred in removal, reinstallation, or unauthorized repair of the product, or for damage of any type whatsoever including incidental or consequential damage.

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Return/repair inquiries

Please direct all in- and out-of-warranty repairs to Process Technology’s Customer Service Department. Before returning any equipment, please contact the Customer Service Department to obtain a Return Material Authorization (RMA) number and form. The designated RMA number should then be marked on the outside of the return package and completed forms returned with the product. To avoid processing delays, please be sure to include:

1) Completed RMA form
2) Purchase order number and invoice number
3) Returnee’s name, address and phone number
4) Model and serial number
5) Repair instructions

Items returned to Process Technology for any reason shall be via freight prepaid, unless prior arrangements have been made.

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SURFACE LOSSES IN KILOWATTS FROM OPEN HOT WATER TANK (ºF)
75°	.01	80°	.02	85°	.03

AMPS FOR HEATING LOAD
Heater	Single Phase				Three Phase (Balanced)
Watts	120V	208V	240V	480V	208V	240V	480V
1,000	8.4	4.8	4.2	2.1	2.8	2.5	1.2
1,800	15.0	8.6	7.5	3.8	5.0	4.4	2.2
2,500	20.9	12.0	10.4	5.2	6.9	6.0	3.0
3,500	29.2	16.8	14.6	7.3	9.7	8.4	4.2
5,000	41.7	24.0	20.9	10.4	13.9	12.0	6.0
6,000	50.0	28.9	25.0	12.5	16.7	14.5	7.3
7,500	62.5	36.0	31.7	15.8	20.9	18.1	9.0
10,500	87.5	50.5	43.8	21.9	29.2	25.3	12.6
15,000	125.0	72.1	62.5	31.3	41.7	36.1	18.1
18,000	150.0	86.6	75.0	37.5	50.1	43.4	21.7

	GALLONS
T E M P		50	100	250	500	750	1000	2000	3000	4000	5000
	70°	0.15	0.3	0.75	1.5	2.25	3	6	9	12	15
	75°	0.2	0.4	1	2	3	4	8	12	16	20
	80°	0.25	0.5	1.25	2.5	3.75	5	10	15	20	25
	85°	0.3	0.6	1.5	3	4.5	6	12	18	24	30