FLUKE-787 Fluke Electronics, FLUKE-787 Datasheet - Page 26

• Manufacturer Part Number: FLUKE-787
• Description: PROCESS METER
• Manufacturer: Fluke Electronics
• Series: ProcessMeter™r
• Type: Digital (DMM)r

Specifications of FLUKE-787

• Includes: Battery, Clips, Test Leads
• Style: Handheld
• Display Digits: 3.75
• Display Type: LCD
• Display Count: 4000
• 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 by exemption / RoHS compliant by exemption
• Other names: Q4953585

787
Users Manual
Simulate Mode
Simulate mode is so named because the meter simulates
a current loop transmitter. Use simulate mode when an
external dc voltage of 24 to 30V is in series with the
current loop under test.
Simulate mode is selected automatically by inserting the
test leads into the SIMULATE
Figure 8. Simulate mode conserves battery life, so use it
instead of source 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.
22
Set the rotary switch to one of the mA output
settings BEFORE you connect the test leads
to a current loop. Otherwise, a low
impedance from the other rotary switch
positions could be presented to the loop,
causing up to 50 mA to flow in the loop.
Caution
and
jacks as shown in
Changing the Current Span
The meter’s current output span has two settings (with
overrange to 24 mA):
To find out which span is selected, short the OUTPUT
SOURCE
OUTPUT
To toggle and save the current output span in nonvolatile
memory (retained when the power is turned off):
1.
2.
3.
4 mA = 0%, 20 mA = 100% (factory default)
0 mA = 0%, 20 mA = 100%
Turn off the meter.
Hold down the
rotary switch to OUTPUT
Wait at least 2 seconds, then release
and
mA, and observe the 0% output level.
jacks, turn the rotary switch to
pushbutton while you turn the
mA.
.