Thermometer

Replaceable Parts

5.Push the Isothermal PCA and the Main PCA together so that the Isothermal PCA pins go deeper into the Main PCA sockets. This holds the IR Lens in place and allows the Main PCA to be reinstalled into the top case.

Reinstalling the Main PCA

1.While holding the IR Lens to the Main PCA, turn the Main PCA over so that the components are facing up.

2.Align the screw holes in the Main PCA with those in the top case.

3.Align the backlight pins with the Main PCA sockets.

4.Align the Main PCA holes with the backlight posts.

5.Gently push the Main PCA down into the top case, making sure that the IR Lens goes into the groove on the LCD-end of the top case. If it does not fit together easily, check to make sure that everything is properly lined up and try again.

6.Reinsert and tighten the two pca screws.

To complete the thermometer reassembly, screw the bottom case to the top case, reinstall the batteries and screw the battery compartment shut.

Replaceable Parts

Refer to Table 4 for all replacement part numbers and Figure 6 for part locations. Unless specified in the “Model Number” column, all parts are for all units. To order replaceable parts, see the “Service Centers” section of this manual.

Item

Number

 

 

Table 4. Replaceable Parts

 

 

 

 

Fluke Part

 

Qty.

Number

Description

 

 

 

Model

Number

1

2

3

4

5

6

7

8A-F

8A

8B

8C

8D

8E

8F

3

4

1

1

1

1

2

1

2

1

1

1

1

1

376756

803582

642931

669838

669812

669804

669801

669796

1541901

804713

1541895

666435

674744

674770

669819

658689

675009

BATTERY, PRIMARY, 1.5V, 0-150MA, AA ALKALINE

SCREW , PH, P, CAPT, STL, 4-40, .25

BATTERY DOOR:

∙SCREW, PH, P, AM THD FORM, STL, 4-14, .312

∙DOOR, BATTERY

CASE, TOP

CASE, TOP

CASE, TOP

CASE, TOP

ISOTHERMAL PCA (TESTED)

CONNECTOR, ELASTOMERIC, LCD TO PWB, 2.210 L

BOTTOM CASE ASSEMBLY

Bottom Case Assembly contains:

∙BATTERY CONTACT, DUAL

∙BATTERY CONTACT (POS)

∙BATTERY CONTACT (NEG)

∙CASE, BOTTOM

∙KEYPAD, CALIBRATION

∙SHIELD

All

All

All All

51

52

53

54

All

All

All

All

All

All

All

All

All

15

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Fluke 53, 51, 54, 52 service manual Number Replaceable Parts Fluke Part Qty Description Model
Page 22 Page 24

51, 52, 53, 54 specifications

The Fluke 51 is a high-precision digital thermometer designed for industrial and laboratory applications, offering accurate temperature measurements across a wide range of environments. With its robust build and advanced features, the Fluke 51 is a tool of choice for field technicians and engineers.

The Fluke 51 boasts an impressive temperature measurement range, typically from -200°C to 1372°C (-328°F to 2500°F), making it suitable for various applications, including HVAC, food processing, and scientific experimentation. One of its standout characteristics is its thermocouple compatibility, supporting multiple thermocouple types such as J, K, T, E, N, R, S, and B. This versatility allows users to select the appropriate sensor for their specific temperature requirements, enhancing measurement accuracy.

A key feature of the Fluke 51 is its fast response time, allowing users to obtain readings within seconds, which is essential for time-sensitive applications. The device is equipped with a large, easy-to-read LCD display that shows clear numerical values, ensuring users can read measurements from a distance or in difficult lighting conditions. Additionally, the display includes a hold function, enabling users to freeze the reading for easier observation.

In terms of data management, the Fluke 51 provides the option to store and recall temperature readings, facilitating efficient documentation and analysis. Its rugged design, resistant to dust and moisture, makes it suitable for use in demanding environments, ensuring durability and longevity.

The Fluke 51 is powered by standard AA batteries, giving it an extended operational lifespan. It also features a low battery indicator, helping users to manage power effectively and avoid unexpected downtime. The device is compact and lightweight, fitting comfortably in the hand and allowing for easy transport.

Another important aspect is its user-friendly interface, which includes intuitive buttons for quick navigation through settings and options. This design consideration enhances usability, allowing even novice users to operate the thermometer efficiently.

In summary, the Fluke 51 digital thermometer combines precision, durability, and ease of use, making it an essential tool in various professional settings. With its wide temperature range, thermocouple compatibility, fast response time, and robust design, the Fluke 51 is positioned as a reliable instrument for accurate temperature measurements wherever the task may take you.
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