Fluke multimeter 27 manual

As this figure shows, the instrument is composed of two major functional sections: the analog section and the digital section. The conversion method in the Fluke 27 can be described as a charge-coupled, multiple-slope technique. A series of 10 minor These minor conversions or samples, as they are called in the following discussion occur at a rate of 25 per second, and are used to provided the fast response bar-graph display and fast autoranging. Page Peripherals To U1 Service Manual preset, and bi-directional bus control for storing control outputs from the microcomputer and for transferring data to the microcomputer.

Both digital readings and an analog bar-graph display are presented, in conjunction with annunciators and decimal points. Refer to the Fluke 27 Users Manual for a more detailed description of the display. Page 22 Service Manual Service Information Operator Maintenance Battery Replacement Fuse Test Fuse Replacement General Maintenance Information Handling Precautions for Static-Sensitive Devices Page 24 Service Manual Page Service Information Service Manual Service Information The Fluke 27 has a lifetime warranty upon shipment of the instrument to the original purchaser.

Conditions of the warranty are described on the registration card. Malfunctions that occur within the limits the warranty will be corrected at no cost to the purchaser. Page Battery Replacement M appears. Referring to Figure , use the following procedure to replace the battery: 1. Page Fuse Test Fuse Replacement Referring to Figure , use the following procedure to check or replace the Fluke 27 fuses: 1.

Perform steps 1 through 4 of the battery replacement procedure. Pull the fuse cover down, then out of the meter. Page General Maintenance Information 1 Phillips-head screwdriver for all interior screws. Reassembly requires silicone lubricant Parker Super O-Lube is recommended and new seals.

A Fluke seal kit Model A, Fluke Part Number provides a complete set of seals and four replacement screws and washers for the bottom case. Page 31 Maintenance General Maintenance Information 6. Remove the old O-ring MP Clean the O-ring surfaces of the battery cover and the instrument case. Install the battery holder on the battery cover, then install the new O-ring.

Remove the four Pozidriv screws H7 and rubber washers from the bottom case. Page Reassembly 1. Place the LCD Page 33 Maintenance General Maintenance Information 2. Note the small bump at the center of tone edge of the momentary switch S3-S6. Place the momentary switch in the case with the bump toward the LCD display. Place the digital pca in the top case with the connector toward the back of the instrument and at the top of the case.

Page Cleaning Performance Tests The following procedures allow you to check the performance of the Fluke 27 against the specifications given in the Fluke 27 Users Manual. The procedures are recommended for incoming inspections, periodic calibration verification, and as an aid in troubleshooting. Verify that the UUT indicates between 2. Verify that the UUT indicates between Page Ohms Function Performance Verification DC Voltage Connection The dc voltage function must be calibrated before calibrating the other functions.

Use the following procedure to calibrate the dc voltage function. Page Troubleshooting 7. Program the DMM Calibrator output for Adjust C8 to obtain a display of Page Dc Voltage Signal Tracing Service Manual isolating a malfunction to the component area, and Table provides further fault isolation within the component area. Refer to the disassembly and reassembly procedures as necessary paragraphs and Set up the instrument as follows: a.

Page Fault Diagnosis Guide Fault Diagnosis Guide Table presents a fault diagnosis guide for the Fluke The left column lists various malfunction. The left column lists various malfunction symptoms. The center column recommends actions to determine the exact problem. The right column lists the components most likely to be defective. Page 42 Service Manual How to Obtain Parts Manual Status Information Newer Instruments Service Centers Parts Lists Page 44 Service Manual Page Introduction Introduction Introduction This chapter contains an illustrated list of replaceable parts for the Fluke 27 Multimeters.

Parts are listed by assembly; alphabetized by reference designator. Page 7 Multimeter Safety Table 2. Page 8: Operating Features Users Manual Operating Features Milliamps or amperes dc The following features are keyed by number to the Microamps dc illustration inside the front cover.

The Relative mode selects manual ranging; changing ranges automatically exits the Relative mode. Example: 2 nS converts to Me. Use for measuring resistance above 32 megohms.

Battery voltage is tested each time the function switch is moved to a new position. Voltages the equipment under test, disconnect circuit greater than 2. Page Conductance Conductance measurements are displayed in test leads to the Fluke 27, and with the leads nanosiemens nS. The analog bar graph, however, will display at least one As an adjustment approaches zero, fewer bar graph segment the moment the contact opens. Page 17 Analog Bar Graph Application charges the capacitor and the needle slowly moves back In a fixed range using manual range mode , the time it to the open infinite ohms position.

The higher resistance takes for the bar graph to extend from zero to full scale ranges offer increased sensitivity for checking smaller indicates the approximate capacitance value. Page 18 Users Manual Table 3. Capacitance Vs. The Fluke 27 resistance measurement circuit is designed to tolerate ac noise far better than the usual DMM. Referring to Figure 1, use new battery, then slide the battery into the battery the following procedure to replace the Fluke 27 battery: compartment. Battery and Fuse Replacement Page Fuse Test Referring to Figure 1, use the following procedure to To prevent arc blast and resulting injury, check or replace the Fluke 27 fuses: install only the EXACT replacement fuse Perform steps 1 through 4 of the battery replacement listed in Table 4.

Page General Maintenance Clean the case with a damp cloth and detergent; do not use abrasives or solvents. Replaceable Parts Page 29 Specifications Digital Display Print page 1 Print document 30 pages. Rename the bookmark. Delete bookmark?