Series 830/840/860 Instruction Manual

Chapter 4 Maintenance

 

 

Caution! Removing or re- positioning the LFE may alter the calibration..

Figure 4-4. NPT Transducer LFE Cleaning

NPT-Type Transducers:

The NPT flow body is comprised of a stainless steel pipe termi- nated on either end by an end cap sealed with an O-ring. The end caps are held in place by four tie rods which run the length of the flow meter and are fastened with eight 3/8-16 nuts and washers. The inlet screen is mounted to the inside of the inlet end cap on three standoffs. The LFE is a cylindrical honeycomb element lo- cated in the flow body between the two sensing ports. In most cases, the LFE can be cleaned without removing it from the flow body. If it cannot be cleaned by back washing, return for factory service. To access the components:

1.Remove the unit from the system.

2.To remove the inlet filter screen, stand the flow body on end with the inlet facing up and remove the four 3/8-16 nuts on the ends of the tie rods. Carefully lift the end cap and filter screen assembly up and off the meter.

3.Inspect the inlet screen for damage and corrosion and replace if necessary. Light to medium particulate contamination can be cleaned by back washing with a suitable solvent. Air dry thor- oughly before re-assembly. Mount the inlet screen with the fine mesh side facing the inlet.

4.Inspect the sealing O-ring for damage and replace if necessary.

5.Re-assemble components. When the transducer is re-installed in the system, leak test the connection.

6.Check transducer calibration.

IM-83/84/86-H

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Sierra 860, 840, 830 instruction manual NPT-Type Transducers, NPT Transducer LFE Cleaning
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840, 830, 860 specifications

The Sierra 860, 830, and 840 are a series of rugged outdoor laptops designed for professionals who require reliable and powerful computing solutions in challenging environments. These laptops combine advanced technologies and robust construction to meet the demands of various fields, including engineering, military, field services, and outdoor research.

One of the standout features of the Sierra series is its rugged design. Constructed with military-grade materials, these laptops are highly resistant to shock, vibration, and extreme temperatures. They have undergone rigorous testing according to MIL-STD-810G standards, which ensures they can withstand harsh conditions whether in the field or during transport. Additionally, the IP65 rating guarantees protection against dust and water exposure, making them invaluable for professionals working in inclement weather or dusty environments.

The Sierra 860, 830, and 840 are powered by high-performance processors, delivering fast and efficient processing capabilities. Equipped with the latest Intel Core processors, including i5 and i7 options, these laptops can handle demanding applications and multitasking with ease. The robust memory options, ranging from 8GB to 32GB, ensure smooth performance for memory-intensive tasks.

Display quality is another critical aspect of these laptops. The Sierra series features high-resolution screens that offer bright, vivid colors and sharp details, making them ideal for tasks requiring precision, such as drafting and design work. The touch-enabled displays enhance user interaction, providing convenience in outdoor settings where traditional input methods may be challenging.

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Battery life is another crucial factor in fieldwork, and the Sierra series excels in this area. With long-lasting batteries, these laptops can operate for extended periods without needing a recharge, making them perfect for long outdoor excursions or remote job sites.

In summary, the Sierra 860, 830, and 840 combine ruggedness, high performance, and extensive connectivity options, making them exceptional computing solutions for professionals in various challenging environments. Their advanced technologies and robust constructions ensure they can tackle the demands of outdoor work while maintaining reliability and efficiency.
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