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Fluke 943-227-15, 943-27 manual Cable Termination Instructions, Detector Cable Termination

Models: 943-227-15 943-27

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Appendix

D

Cable Termination Instructions

Appendix D

Cable Termination Instructions

D.1 Cable Termination Instructions

The procedures and instructions provided in Appendix D are provided for reference in terminating the field cables to the Digital Preamplifier. A mating SHV connector is provided with the preamplifier. Ring lug terminals are to be provided by the user. The instructions provided below are based on the use of P/N 50-100 multi-conductor cable. For other customer-supplied cables, the same basic procedures, modified for the specific cable used, may be utilized.

Detector Cable Termination:

The detector high voltage and signal cables enter the preamplifier through “Seal Grip” type penetrations on the enclosure body. The “Seal Grips” contain a rubber gland that is intended to grip the coaxial cables to prevent moisture entry into the enclosure. The “Seal Grips” are an integral part of the detector cables. The “Seal Grip” enclosure nut is removed from the fitting. The insulating washer stays with the fitting. The detector signal and high voltage cables, with connectors and “Seal Grip” fitting nuts are then inserted into the holes preamplifier enclosure. The “Seal Grip: end fittings are then re-installed securely against the wall of the enclosure.

Detector Field Cable Preparation, “MS” Connector:

Prior to stripping the outer cable jacket, a 4-inch length of 0.75 I.D. shrinkable tubing (provided by the user) should be slid over the 0.675 in cable jacket. The shrink tubing will be used to seal and protect the end of the cable after the termination process is completed. To prepare the cable for termination, a minimum of 7 inches of the cable outer jacket must be stripped off the cable. This will allow for the stripping of approximately one inch from the various conductors, and provide 6 inches of actual service loop cable. In addition, for EMI/RFI protection, the drain wire must be terminated to an earth ground within the enclosure. The length of the drain wire will be based on the distance between the cable entry and the ground location. The length of cable jacket to be stripped will then be based on the distance to the drain wire grounding point.

Once the cable outer jacket is stripped to the proper length, the aluminum tape shield and Mylar binder may be removed, taking care not to damage the No. 20 AWG drain wire. The drain wire may then be separated from the remaining conductors, for routing and termination at the grounding point.

Next, the HV coaxial cable may be separated from the bundle, followed by the single conductors wires that are required for the specific application, and the polyester filler cord. Refer to the project specific detector loop drawing, or the generic detector loop drawing provided in Appendix B for actual conductors to be used.

The polyester filler cord may now be removed. Cut the cord as close to the outer jacket as possible.

The single conductors may now be stripped and soldered to the appropriate connector pin.

D-1

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Fluke 943-227-15, 943-27 manual Cable Termination Instructions, Detector Cable Termination
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943-227-15, 943-27 specifications

The Fluke 943-27 and Fluke 943-227-15 are advanced electrical testing tools designed to meet the demands of professionals in industrial and commercial settings. Recognized for their accuracy and reliability, these devices come loaded with essential features tailored to ensure optimal performance during electrical measurements.

The Fluke 943-27 is a compact yet powerful multimeter that excels in providing precise voltage and current readings. It is equipped with a large, backlit display that ensures visibility in low-light environments. The device supports a wide range of testing parameters, including AC and DC voltage, resistance, continuity, and capacitance measurements, making it invaluable for troubleshooting electrical circuits.

On the other hand, the Fluke 943-227-15 offers additional capabilities, including advanced data logging features. This multimeter allows users to record and analyze measurements over time, which is particularly useful for identifying intermittent issues in electrical systems. Its connectivity options enable seamless data transfer to a computer or mobile device, facilitating easy documentation and reporting.

Both models illustrate a robust construction built to endure tough working conditions. They meet stringent safety standards, which is critical for protecting users from electrical hazards. The ergonomic design ensures comfort during prolonged use, and features like overmolding enhance grip and durability.

One of the standout technologies in these multimeters is Fluke’s True-RMS measurement capability. This feature ensures accurate readings of non-linear loads, which are common in modern electrical systems with variable frequency drives and other electronic devices. Additionally, the built-in low-pass filter technology reduces noise in measurements, ensuring precision even in environments with significant electrical interference.

The Fluke 943-27 and 943-227-15 are also designed to be user-friendly. They feature intuitive controls and a straightforward user interface, allowing technicians to navigate functions effortlessly. The ability to perform automatic ranging simplifies measurements, eliminating the potential for errors when setting the range manually.

In conclusion, the Fluke 943-27 and 943-227-15 represent essential tools for electrical technicians who require versatility, accuracy, and durability in their testing equipment. With advanced features, reliable technologies, and a user-centric design, these multimeters not only meet but exceed the expectations of professionals in the field.