Fluke 787 Fluke 787 and 789 Process Meter Datasheet - Page 1

Fluke 787 and 789 ProcessMeter™ Test Tools Safety rated multimeters with mA source. Fluke 789 ProcessMeter With the Fluke 789 ProcessMeter, process technicians can do a lot more while carrying a lot less. Key Fluke 789 features: • 24 V loop power supply • HART mode setting with loop power (adds 250 ohm resistor) • Double-sized, dual display • 20 mA drive into 1200 ohms • Backlight with two brightness settings • 0-100 % mA Span Check buttons to toggle between 4 and 20 mA • Infrared I/O serial port compatible with FlukeView® Forms Software • Improved battery power with four AA batteries • Plus all the proven 787 features Fluke 787 ProcessMeter • Simultaneous mA and % of scale readout on mA output • 25 % Manual Step plus Auto Step and Auto Ramp on mA output • Min/Max/Average/Hold/Relative modes • Externally accessible battery for easy changes • CAT III 1000 V safety-rated, true-rms multimeter In-field valve positioner checks Application Note (Literature code 2041342) Valve positioners open and close with a 4-20 mA signal applied. This application note explains how to adjust these valves so they open and close correctly. 31 Specifications - 787 and 789 ProcessMeter Measurement Function Best Accuracy Range and Resolution (% of reading + LSD) V dc 400.0 mV, 4.000 V, 40.00 V, 400.0 V, 1000 V 0.1 % + 1 V ac (true-rms) 400.0 mV, 4.000 V, 40.00 V, 400.0 V, 1000 V 0.7 % + 2 mA dc 30.000 mA .05 % + 2 A dc 1.000 A (0.440 A continuous) 0.2 % + 2 A ac 1.000 A (0.440 A continuous) 1 % + 2 Resistance 400.0 Ohms, 4.000 k, 40.00 k, 400.0 k, 4.0 M, 40 M 0.2 % + 1 Frequency (0.5 Hz to 20 kHz) 199.99 Hz, 1999.9 Hz, 19.999 kHz .005 % + 1 Diode Test 789: 2.000 V (shows diode voltage drop) 787: 2.400 V (shows diode voltage drop) 2 % + 1 2 % + 1 Continuity Beeps for resistance < approx. 100 ohms Output Function Range and Resolution Drive Capability Accuracy (% of span) DC current output (Internal battery operation) 0.000 to 20.000 mA or 4.000 to 20.000 mA (selectable at power-up) Over-range to 24.000 mA 789: 24 V compliance or, 1,200 Ohms, @ 20 mA 787: 12 V compliance or, 500 Ohms, @ 20 mA .05 % .05 % DC current simulate (Ext. 24 Volt loop supply) 0.000 to 20.000 mA or 4.000 to 20.000 mA, 1000 Ohms, (selectable at power-up) Over-range to 24.000 mA @ 20 mA .05 % 24 V loop supply 789: Minimum 24 V 787: not available 250 Ohms @ 20 mA > 24 V Current adjustment modes Manual: Coarse, Fine, 25 % and 100 % step (100 % step 789 only) Automatic: Slow Ramp, Fast Ramp, 25 % step Temperature range of 18 °C to 28 °C, for one year after calibration Maximum voltage applied between any jack and earth ground:1000 V rms Storage temperature: -40 °C to 60 °C Operating temperature: -20 °C to 55 °C Relative humidity: 95 % up to 30 °C; 75 % up to 40 °C; 45 % up to 50 °C; 35 % up to 55 °C Safety: Designed in accordance with EN61010, ANSI/ISA S82.01-1994 and CAN/CSA C22.2 No. 1010.1-92 Over-voltage Category III Size (HxWxL)/weight (787 with holster and FlexStand™): 52 mm x 98 mm x 201 mm (2.06 in x 3.86 in x 7.93 in)/638 g (1.4 lbs) Size (HxWxL)/weight (789): 50 mm x 100 mm x 203 mm (1.97 in x 3.94 in x 8.00 in)/600 g (1.3 lbs) Recommended accessories - 787 and 789 ProcessMeter TL220 See page 39 80T-IR See page 42 80T-150U See page 43 C125 See page 44 PV350 See page 47 Included accessories Fluke-789 ProcessMeter: TL71 Premium Safety-Designed Test Lead Set plus alligator clips, 4 AA alkaline batteries (installed), product overview and users manual (CD-ROM) in 14 languages. Fluke-787 ProcessMeter: C81Y Protective Yellow Holster with Flex-Stand, TL75 Safety-Designed Test Lead Set plus alligator clips, one 9V alkaline battery (installed), product overview and users manual (CD-ROM) in 14 languages. Ordering information Fluke-789 ProcessMeter Fluke-787 ProcessMeter For more information, go to wwwww.MwyF.MlukyeFSltuokree.Scotmore.com