Chromalox®

Installation, Operation

and

Maintenance Instructions

SERVICE REFERENCE

DIVISION 4

 

SECTION PTHF

SALES

(Supersedes PD438-1)

PD438-2

REFERENCE

161-620127-001

DATE AUGUST, 1998

Type PTHF Over-the-Side Immersion Heater

 

5"

 

 

Part Number

4-11/16"

 

Cat No. Volts Watts

 

 

Phase Date Code

 

1-1/2"

 

 

5/16" x 1-1/2"

 

 

Slot For Mounting

6"

 

2 Places

 

 

4-5/8"

 

 

7/8 Dia. Hole Each Side For 1/2 in. Conduit

Integral Manual Reset Thermal Cutout

Specifications

 

Model

Volts

Phase

kW

Dimensions (In.)

Approx.

 

Number

A

B

C

Weight (Lbs.)

 

 

 

 

 

PTHF-302

240

1 or 3

3

16

7

9

7

 

 

 

 

 

 

 

 

 

 

PTHF-304

480

1 or 3

3

16

7

9

7

 

 

 

 

 

 

 

 

 

 

PTHF-402

240

1 or 3

4

18

9

9

8

A ±1/4"

C ±1/8"

1"

Cold End

1-1/2"

 

 

B ±1/8"

 

 

 

 

 

 

Spacer Bar

9-1/8" ±1/4"

 

 

2-13/16"

 

 

1/2"

 

 

 

Figure 1

PTHF-404

480

1 or 3

4

18

9

9

8

PTHF-602

240

3

6

22

13

9

9

 

 

 

 

 

 

 

 

PTHF-604

480

3

6

22

13

9

9

 

 

 

 

 

 

 

 

PTHF-802

240

3

8

27

18

9

10

 

 

 

 

 

 

 

 

PTHF-804

480

3

8

27

18

9

10

 

 

 

 

 

 

 

 

PTHF-1002

240

3

10

31

22

9

11

 

 

 

 

 

 

 

 

PTHF-1004

480

3

10

31

22

9

11

B Dimension is heated section. C Dimension is cold section.

Note: “XX” after model number denotes special dimensions.

GENERAL

WARNING: This heater is not intended for use in haz- ardous atmospheres where flammable vapors, gases, liquids or other combustible atmospheres are present as defined in the National Electrical Code. Failure to comply can result in explosion or fire.

Chromalox type PTHF over-the-side immersion heaters are especially suited for heating corrosive solutions to 212˚F.

WARNING: It is the responsibility of the purchaser of the heater to make the ultimate choice of sheath material based upon his knowledge of the chemical composition of the corro- sive solution, character of the materials entering the solution, and controls which he maintains on the process. Chromalox cannot warrant any electric immersion heater against failure by sheath corrosion if such failure is the result of operating beyond our control.

1.Heater Construction Characteristics

A.High quality resistance wire held in place by compacted magnesium oxide in stainless steel sheath.

B.Medium Watt Density.

C.Light weight and low profile.

D.Manual rest cutout to shut off heater in an overtemperature condition is standard.

WARNING: Users should install adequate controls and safety devices with their electric heating equipment. Where the conse- quences of failure may be severe, back-up controls are essential. Although the safety of the installation is the responsibility of the user, Chromalox will be glad to make equipment recommenda- tions.

INSTALLATION

WARNING: Hazard of Electrical Shock. Disconnect all power before installing heater.

1.WARNING: Do not scrape or scratch thermal cutout capil- lary on heating elements. Damage could result.

2.Before installing the type PTHF heater, inspect it for possible damage which may have occurred during shipment. Also, check to insure the line voltage is the same as that on the nameplate.

3.WARNING: Mount heater in the tank so the liquid level will always be above the effective heated portion of the heater. If heater is not properly submerged, it will overheat and damage the heating elements and create a possible fire due to exces- sive sheath temperature.

4.In an electroplating operation the heaters are not, under any circumstance, to be placed between the electrodes and the work.

© 2010 Chromalox, Inc.

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Chromalox PD438-2 specifications General, Installation, Heater Construction Characteristics
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PD438-2 specifications

The Chromalox PD438-2 is a state-of-the-art temperature control and monitoring device that has gained prominence in various industrial applications due to its advanced features and robust performance. This particular model is designed to provide precise temperature management across a wide range of processes, making it an essential tool in manufacturing, food processing, and other sectors requiring stringent temperature regulation.

One of the main features of the PD438-2 is its user-friendly digital interface, which allows operators to set and monitor temperature ranges easily. This model supports multiple temperature sensors and can display readings in both Celsius and Fahrenheit, providing flexibility for global applications. The large LCD screen ensures clear visibility of the current temperature, set points, and operational status, enhancing visibility and reducing the chances of error during operation.

The PD438-2 utilizes advanced microprocessor-based technology, which enhances its accuracy and reliability. This feature ensures that the temperature control is not only precise but also responsive, adapting quickly to changes in the process environment. Additionally, the controller is equipped with auto-tuning capabilities that optimize the control parameters for the specific application, which significantly improves the efficiency of temperature regulation.

Another characteristic that sets the Chromalox PD438-2 apart is its versatility in terms of output options. It can be configured for various types of heating elements, including electric heaters and other thermal devices. This flexibility enables it to be integrated into different systems seamlessly, making it an ideal choice for a wide array of industries.

Safety is a critical consideration in any temperature control application, and the PD438-2 does not compromise in this area. The device features comprehensive alarm systems that alert operators to any anomalies or deviations from preset temperature thresholds. This proactive approach to safety ensures that any potential issues can be addressed promptly, thereby minimizing downtime and protecting equipment.

Moreover, the PD438-2 is designed for ruggedness and durability, featuring a robust housing that can withstand harsh industrial environments. Its compatibility with various mounting options allows for easy installation and integration into existing systems.

In summary, the Chromalox PD438-2 stands out due to its precise temperature control, user-friendly interface, advanced microprocessor technology, versatility in outputs, safety features, and durable design. These attributes make it a reliable choice for industries demanding high-performance temperature management solutions.
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