FLUKE-789 Fluke Electronics, FLUKE-789 Datasheet - Page 28
FLUKE-789
Manufacturer Part Number
FLUKE-789
Description
PROCESSMETER DMM W/4-20MA SOURCE
Manufacturer
Fluke Electronics
Series
ProcessMeter™r
Type
Digital (DMM)r
Specifications of FLUKE-789
Includes
Battery, Clips, Test Leads
Style
Handheld
Display Digits
4.5
Display Type
LCD, Dual
Display Count
20000
Function
Voltage, Current, Resistance, Frequency
Functions, Extra
Continuity, Diode Test
Features
Auto Off, Backlight, Hold, Min/Max/Ave
Ranging
Auto/Manual
Response
True RMS
Lead Free Status / RoHS Status
Lead free / RoHS compliant by exemption
Other names
1633984
614-1075
789
614-1075
789
789
Users Manual
Compensating for Test Lead Resistance
Use the relative reading feature (Q on the display) to set
the present measurement as a relative zero. A common
use for this feature is to compensate for test lead
resistance when measuring ohms.
Select the
together, and then press r. Until r is pressed
again, or the meter is switched to another measurement
or source function, the readings on the display will
subtract the lead resistance.
Using the Current Output Functions
The meter provides steady, stepped, and ramped current
output for testing 0-20 mA and 4-20 mA current loops.
Choose source mode, in which the meter supplies the
current, simulate mode, in which the meter regulates
20
measure function, touch the test leads
current in an externally powered current loop, or loop
supply mode, where the meter powers an external device
and measures the loop current.
Source Mode
Source mode is selected automatically by inserting the
test leads into the SOURCE
Figure 7. Use source mode whenever it is necessary to
supply current into a passive circuit such as a current
loop with no loop supply. Source mode depletes the
battery faster than simulate mode, so use simulate mode
whenever possible.
The display looks the same in source and simulate
modes. The way to tell which mode is in use is to see
which pair of output jacks is in use.
and
jacks as shown in