Manuals / Fluke / Home Audio / Stereo Amplifier

Fluke 943-27, 943-227-15 Operation, Installation, Preamplifier Mounting, Electrical Interface

Models: 943-227-15 943-27

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Operation

Installation 3

Section 3

Operation

3.1 Installation

Installation consists of mounting the equipment, making the required electrical connections, and entering the desired set points.

CAUTION

Remove all power prior to installing the

Preamplifier.

Preamplifier Mounting

The preamplifier is a self-contained unit that is designed for mounting on a wall, or structurally sound surface, within 6 feet of the detector. The preamplifier must be located in an area that is accessible for future maintenance.

CAUTION

Remove all power prior to connecting field wiring.

Electrical Interface

Electrical connections at the preamplifier include connecting the detector high voltage and signal coaxial cables and the field cable from the associated controller.

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 stay 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.

The detector Signal (BNC) and High Voltage (SHV) cables are then terminated on the bulkhead connectors located on the enclosure inner panel.

On the 943-227-15 or 943-227-15VL, the field cable is terminated on a “MS” type connector. A mating “MS” style connector supplied with the detector. It is not necessary to open the preamplifier enclosure to complete the interconnection to the associated controller.

On the 943-227-15VL-M1, a 2.0-inch conduit hub is provided to interface with the field conduit system and cable. The field conduit is connected to the preamplifier conduit hub and the field cable is routed through the conduit and into the preamplifier enclosure. The field signal cable is then terminated on the terminal block in the enclosure. Refer to the applicable wiring diagram or Table 3-1. The high voltage coax cable is then terminated on the mating SHV connector. Refer to Appendix D for further information.

A desiccant bag is provided in the enclosure to absorb moisture. The desiccant bags should be checked for moisture absorption prior to placing into service. Each bag contains a color indicator stripe that turns red when it should be replaced.

3-1

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Fluke 943-27, 943-227-15 manual Operation, Installation, Preamplifier Mounting, Electrical Interface
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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.