Fluke 789 Скачать руководство пользователя страница 1

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

Fluke 787 and 789

ProcessMeter

Test Tools

Safety rated multimeters with mA source.

Specifications – 787 and 789 ProcessMeter

Recommended accessories – 787 and 789 ProcessMeter

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.

Measurement Function

Best Accuracy Range and Resolution

(% of r 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)

2 % + 1 

787: 2.400 V (shows diode voltage drop)

2 % + 1 

Continuity

Beeps for resistance < approx. 100 ohms

Drive

Accuracy

Output Function

Range and Resolution

Capability

(% of span)

DC current output

0.000 to 20.000 mA or 4.000 to 20.000 mA

789: 24 V 

(Internal battery operation)

(selectable at power-up) Over-range to 24.000 mA

compliance or,

.05 %

1,200 Ohms,
@ 20 mA
787: 12 V

.05 %

compliance or,
500 Ohms,
@ 20 mA

DC current simulate

0.000 to 20.000 mA or 4.000 to 20.000 mA,

1000 Ohms,

(Ext. 24 Volt loop supply)

(selectable at power-up) Over-range to 24.000 mA 

@ 20 mA

.05 %

24 V loop supply

789: Minimum 24 V

250 Ohms 

> 24 V

787: not available

@ 20 mA

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)

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

TL220

80T-IR

80T-150U

C125

PV350

See page 39

See page 42

See page 43

See page 44

See page 47

For more information, go to www.MyFlukeStore.com

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