Introducing the Fluke 789 Process Meter Double the

Introducing the Fluke 789 Process Meter ™ Double the power A maintenance and calibration tool that will be at home in every instrumentation technician's tool box, the Fluke 789 Process. Meter™ combines a DMM and a Loop Calibrator in one rugged, handheld tool, for about what you would expect to pay for a loop calibrator alone. Based on the trusted Fluke 87 DMM, the 787 adds the ability to measure, source, and simulate dc loop current with 0. 05% accuracy with 1 microamp resolution and an extra large dual, backlit display. 789 Overview 2008

Fluke 789 Basic Specifications 789 Overview 2008

Fluke 789 Getting Acquainted Feature Set • DMM 1000 V Cat III Safety rating • Precision 1000 V, 440 m. A True-RMS digital multimeter • Frequency measurement to 20 k. Hz • Min/Max/Average/Hold/Relative modes • Diode Test and Continuity Beeper • Simultaneous m. A and % of scale readout • 20 m. A dc current source / loop calibrator / simulator • Manual Step (100%, 25%, Course, Fine) plus Auto Step and Auto Ramp 789 Overview 2008

Fluke 789 Getting Acquainted Feature Set • 24 V Loop Power Supply • Hart mode setting with loop power (adds 250 ohm resistor) • 100% larger dual display • 1200 ohm drive capability on m. A source • Backlight with two brightness settings • 0 -100% m. A Span Check buttons to toggle between 4 and 20 m. A • Infrared I/O serial port compatible with Fluke. View Forms Software version 2. • Externally accessible fuses for easy replacement • Externally accessible battery for easy battery changes 789 Overview 2008

Fluke 789 Features MAX – displays the maximum-recorded value MIN - displays the minimum-recorded value AVG –displays the average value since starting recording (up to 40 hours continuous recording time) Communication Port Extra large display The meter normally is in autorange mode meaning that the meter automatically selects the lowest range that will measure the applied input signal with the best resolution. (Auto Range showing on the display). Hold and Auto. Hold Relative reading feature to set the present measurement as a relative zero Frequency is the number of cycles a signal completes each second. To measure frequency, connect the meter to the signal source; then press Hz. Toggles the backlight low high and off for better illumination of the display CAT III 1000 V overvoltage protection Broad range of measurement functions, including Resistance and continuity 789 Overview 2008

Getting Acquainted with the 5 meter 4 3 6 2 1 7 9 8 10 789 Overview 2008

Fluke 789 Process Meter (Orange!) Rotary Function Switch Positions for m. A Output Rotary Function Switch Position for Loop Supply 789 Overview 2008

Fluke 789 Process Meter (Orange for Source!) Pushbuttons 789 Overview 2008

Fluke 789 Process Meter 789 Overview 2008

Fluke 789 Demo 789 Simulator 789 Overview 2008

Fluke 789 Process Meter Sourcing Current • Connect as in the diagram below • Turn switch to position shown 789 Overview 2008

Fluke 789 Process Meter Sourcing Current • Press 100% (3) • Press 0% (2) • Press %STEP UP (4) button four times • Press %STEP DOWN (10) button four times • Press COARSE UP (5) button a few times • Press COARSE DOWN (9) button a few times • Press FINE UP (6) button a few times • Press FINE DOWN (6) button a few times Turn selector next position • Press BLUE button to change ramp type • Each ramp type has a particular usefulness when commissioning and troubleshooting 789 Overview 2008

Fluke 789 Process Meter Simulating a transmitter 789 Overview 2008

Review: Measure/Source Capabilities Meter Measurements in White Selectable Functions in Blue Current Sourcing/Simulation Functions in Orange Input Jacks correspond to Measure/Source functions Cat III 1000 V, Cat IV 600 V Input Protection Rating for Safety Fused Current Inputs 30 m. A measurement for increased resolution on loop currents 0. 44 A for use in higher current applications with current clamp accessories 789 Overview 2008

General Fault Finding Low Battery • Replace the battery as soon as the battery indicator appears – Typical battery life (measuring any parameter 140 Hours Test leads • Test leads are a “Wear and Tear” item and need proper care for good measurements. For best results check test leads before each use. • Step 1: Insert leads in V/ and COM inputs. Step 2: Select , touch probe tips. Good leads are 0. 1 - 0. 3 . Checking a single test lead • Plug either lead into V/ jack then plug probe tip into COM jack • Look for same readings as above Visually check for: • Insulation not melted, cut, cracked, etc. • Connectors not damaged: no insulation pulled away from end connectors • Probe tips: not loose or broken off 789 Overview 2008

General Fault Finding Testing the Fuses ! Warning To avoid personal injury or damage to the meter, use only the specified replacement fuse, 440 m. A 1000 V fast-blow, Fluke PN 943121. Both current input jacks are fused with separate 440 m. A fuses. To determine if a fuse is blown: 1. Turn the rotary function switch to 2. 3. Plug the black test lead into COM, and the red test lead into the Using an ohmmeter, check the resistance between the meter test leads. If the resistance is about 1 Ω, the fuse is good. An open reading means that fuse F 1 is blown. 4. Move red test lead to 5. Using an ohmmeter, check the resistance between the meter test leads. If the resistance is about 14 Ω, the fuse is good. An open means that fuse F 2 is blown. 789 Overview 2008

Battery Replacement 2. Replacing the batteries and fuses without breaking the calibration seal 789 Overview 2008

Replacing the Fuses 1. Remove the test leads from the meter and turn the meter OFF. 2. With a standard blade hand screwdriver, turn each battery door screw counterclockwise so that the slot is parallel with the screw picture molded into the case. 3. Remove either fuse by gently prying one end loose, then sliding the fuse out of its bracket. 4. Replace the blown fuse(s). 5. Replace the battery access door. Secure the door by 6. turning the screws one-quarter turn clockwise. 789 Overview 2008

Replacement Parts Commonly used Replacement Parts: Test Lead Set TL 71(1 pair) item number 1274382 Alligator Clips AC 72 (1 pair) item number 1670095 Fuse 440 m. A, 1000 V item number 943121 (2 used in meter) IR cable+adapter IR 189 USB item number 2428108 Batteries 4 “AA” alkaline cells---Use your favorite brand 789 Overview 2008

Meter Measurement Features Turn Meter ON to DC Volts: 100% Larger display Two Levels of Back-light 4 Volt range over-ranges to greater than 5. 000 VDC for improved resolution in 1 -5 V resolution sensor applications Advanced measurement functions include Min/Max, manual Range selection, Relative mode, Continuity and Frequency (Hz). 789 Overview 2008

m. A Calibration Sourcing Features (Orange!) All m. A output controls, switch settings and connections have orange nomenclature! 1. 2. 3. 4. 5. 6. 7. 8. Turn Meter to m. A Sourcing Function (m. A orange) Insert Black Lead into "Source -" jack ("m. A" red, second from left) Insert Red Lead into "Source +" jack ("A" red, left most jack) Short together with Alligator Clips Defaults to 4. 000 m. A (0. 0%) for safety Dual m. A and % Display 4 -20 m. A Manual Sourcing Function Keys Reference the orange text between the buttons (Span. Check, etc) Span. Check press "0%" for 4 m. A, 100% for 20 m. A % Step: Press ^ (up) to step up 25%; V (down) to step down 25% Course Adjust: . 100 m. A increment/decrement Fine Adjust: . 001 m. A increment/decrement 789 Overview 2008

Ramping and loop power 5. 4 -20 m. A Automatic Ramping Features 1. 2. Turn to m. A Ramping Function in blue (second m. A output selection) Press Blue key to rotate through ramping functions Slow Ramp ^ Fast Ramp ^^ Slow Step: 15 second dwell time between steps (incremental to 787) Fast Step 6. Supply Loop Power to Transmitters 1. Turn to m. A /Loop Power/ 250 Ohm HART 24 V Loop Power with m. A Loop measurement enabled 250 Ohm HART resistor built in, eliminates need for extra 250 resistor when connecting HART communicators into loop (Blue special function button) 789 Overview 2008