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

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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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Contents
Victoreen Fluke Biomedical Table of Contents Blank General Description General InformationApplication Preamplifier Variations Application Detector Readout SpecificationsFeature Specification Preamplifier Power Jumper Normal Setting Function Cal. Position Switch Normal Switch FunctionOFF Selects 300 baud 1/ON Selects 4800 baud normal setting Jumper Normal Setting Function Alternate SettingDetector Connections TB1943-227-15 Description Connects To 977-210-10M J4-1Part Number Description Used On Auxiliary EquipmentRecommended Spare Parts Receiving InspectionStorage Blank Functional Description Theory of OperationFunction Hex Address Bit Position Description Theory of Operation Main Circuit BoardsRS232 Transmit Test Point FunctionRS232C Communications Victoreen Communications Loop 943-227-15VLEnables Victoreen Loop Jumper Normal Function Alternate SettingJumper Normal Function Cal Setting Position Electrical Interface InstallationOperation Preamplifier MountingSet-up Digital Preamplifier Normal Operation Fail AlarmPower Failure OperationFirmware Version Configuration FunctionsTo B Enables Victoreen Loop To C Enables RS232C Normal To B Normal Operation To C PGA Offset AdjustSoftware Calculations Set Point Error CodesBlank Electronic Calibration Maintenance, Calibration and TroubleshootingMaintenance Electronic AdjustmentsTroubleshooting / Adjustments TroubleshootingConnector DESIGNATIONS, 943-227-15 and 943-227-15VL Connector DesignationsSwitch and Jumper POSITIONS, 943-227-15 and 943-227-15VL Related Manuals Not Supplied with this document Applicable Drawings 943-227-15VLBlank Bill of Materials- 943-227-15 and 943-227-15VL Bill of MaterialsPart Number Description Blank Cable Termination Instructions Cable Termination InstructionsDetector Cable Termination Digital Preamplifier HV Connector Notes HV Digital Preamplifier Cable Termination Instructions D Digital Preamplifier Appendix Cable Termination Instructions Digital Preamplifier Modification Sheets, Engineering Instructions Modification Sheets, Engineering InstructionsBlank Blank Fluke Biomedical
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