®
Loop Calibrator
707
Instruction Sheet
Introduction
The Fluke 707 Loop Calibrator (hereafter, the Calibrator) is a
compact sourcing and measuring tool. The Calibrator tests current
loops of 0-20 mA or 4-20 mA and measures dc voltage to 28 V. It
comes with a set of alligator-clip test leads, a 9 V alkaline battery,
and this
Instruction Sheet.
The Calibrator is a IEC 61010, CAT I 30 V, Pollution Degree 2
instrument. A CAT I instrument is designed to protect against
transients from high-voltage, low-energy sources, like electronic
circuits or a copy machine, for example.
Calibrator Capabilities
Function
Measure V dc
Measure mA dc
Source mA dc
Source loop power
Range
28 V
0 to 24 mA
24 V dc
Resolution
1 mV
1
μA
N/A
Battery Saver
The Calibrator automatically turns off after 30 minutes of inactivity.
To reduce this time or disable this feature:
1.
With the Calibrator
OFF,
press
D.
PSXX
is displayed, where
XX
is the turn-off time in minutes.
OFF
means the power saver is disabled.
2.
3.
Turn
m
to decrease or increase the turn-off time.
To disable, turn
m
until the display shows
OFF.
The Calibrator resumes normal operation after 2 seconds.
August 2001 (English) Rev. 2, 2/08
© 2001-2008 Fluke Corporation. Product specifications are subject to
change without notice. All rights reserved.
W
Warnings and Cautions
To avoid electric shock, injury, or damage to the
Calibrator:
•
Use the Calibrator only as described in this
Instruction Sheet or the protection provided by the
Calibrator may be impaired.
•
Do not use the Calibrator around explosive gas,
vapor, or dust.
•
Inspect the Calibrator before use. Do not use it if
appears damaged.
•
Check the test leads for continuity, damaged
insulation, or exposed metal. Replace damaged
test leads.
•
Never apply more than 30 V between any two
terminals, or between any terminal and earth
ground.
•
Use the proper terminals, mode, and range for your
measuring or sourcing application.
•
To prevent damage to the unit under test, put the
Calibrator in the correct mode before connecting
the test leads.
•
When making connections, connect the COM test
lead before the live lead; when disconnecting,
disconnect the live lead before the COM lead.
•
Never use the Calibrator with the case open.
•
Make sure the battery door is closed before you
use the Calibrator.
•
Replace the battery as soon as the
M
(low battery)
symbol appears to avoid false readings that can
lead to electric shock.
•
Remove test leads from the Calibrator before
opening the case or battery door.
Symbols
Symbol
+
J
W
h
T
M
)
P
F
~
ON / OFF button.
Earth ground
Caution: Important information. Refer to instruction sheet
Caution: Static discharge can damage parts
Double insulated
Battery
Conforms to relevant Canadian Standards Association
directives. Certification # LR110460-2.
Conforms to European Union requirements
Direct current
Do not dispose of this product as unsorted municipal
waste. Go to Fluke’s web site for recycling information.
Meaning
Pushbutton Functions
Pushbutton
Function
ON or OFF button.
Press
A
and
D
simultaneously to toggle
between the mA output spans.
•
•
4 mA to 20 mA = 0 % - 100 % (default)
0 mA to 20 mA = 0 % - 100 % (optional)
D
A
+
D
(Power-on Option)
The selection is saved until it is changed.
l
+
D
(Power-on Option)
Press
+
D
simultaneously to turn HART
resistor (Hr) on. Default is off.
Press to step through modes:
•
•
•
•
•
Source mA
Simulate mA
Measure mA
Loop Power (24 V)
Measure V dc
l
A
Turn
n
to increase or decrease current output.
Current output can be adjusted at a resolution of
1
μA
or 100
μA.
(Default is 1
μA.)
•
To adjust the current in 1
μA
steps, simply
turn the knob.
To adjust the current in 100
μA
steps,
press
in and turn
the knob.
hij
•
B
B
+
C
Press
B
to step the current
up
25 % of full
scale (20 mA).
At full scale, press
B
to step the current down
25 % of full scale.
Press
B
+
C
simultaneously to enter the
Auto Ramp mode and select a ramp form.
A continuously applied or controlled mA ramping
signal is produced in one of three ramp forms.
e
(
slow
),
g
(
fast
),
or
f
(step) identifies the
selected ramp form.
C
Press
C
to start the SpanCheck™ at 0 % of
selected current span, i.e., 0 mA for 0-20 mA span
or 4 mA for 4-20 mA span.
d
is displayed.
Press again for 100 % of selected current span.
Using the mA Sourcing (Output) Modes
The Calibrator outputs current for calibrating and testing 0 to 20 mA
and 4 to 20 mA current loops and instruments.
In
SOURCE
mode, the Calibrator supplies the current.
In
SIMULATE
mode, the Calibrator simulates a 2-wire transmitter in
an externally-powered current loop.
Changing the mA Output Span
The Calibrator has two mA output spans:
•
•
4 mA to 20 mA (0 % to 100 %) [default]
0 mA to 20 mA (0 % to 100 %) [optional]
To change the output span, turn the Calibrator off. Press
A
+
D
simultaneously. The selected setting is saved until it is changed
again.
Sourcing mA
Use
SOURCE
mode to supply current to a passive circuit.
A path must exist for current to flow between the
+
and
COM
terminals. Otherwise the display indicates an overload (OL) when
you set an output value.
707
LOOP CALIBRATOR
Press until SOURCE
mA is displayed.
Press simultaneously
once for slow ramp
twice for fast ramp
three times for
stepped ramp.
Press to step current
up/down in 25 %
steps of full scale.
CAT
Turn to step up/down
1 A. Press in and
turn to step up/down
in 100 A increments.
+
30V
COM
ADA04F.EPS
Contacting Fluke
To contact Fluke for product information, operating assistance,
service, or to get the location of the nearest Fluke distributor or
service center, call:
1-888-44-FLUKE (1-888-443-5853) in U.S.A
1-800-36-FLUKE in Canada
+31-402-675-200 in Europe
+81-3-3434-0181 Japan
+65-738-5655 Singapore
+1-425-446-5500 from other countries
Or visit Fluke's web site at:
www.fluke.com.
Register your Calibrator at:
http://register.fluke.com.
Address correspondence to:
Fluke Corporation
P.O. Box 9090,
Everett, WA 98206-9090
U.S.A.
Fluke Europe B.V.
P.O. Box 1186,
5602 BD Eindhoven
The Netherlands
Limited Warranty & Limitation Of Liability
This Fluke product will be free from defects in material and work-
manship for 3 years from the date of purchase. This warranty
does not cover fuses, disposable batteries, or damage from
accident, neglect, misuse, alteration, contamination, or abnormal
conditions of operation or handling. Resellers are not authorized
to extend any other warranty on Fluke’s behalf. To obtain service
during the warranty period, contact your nearest Fluke authorized
service center to obtain return authorization information, then
send the product to that Service Center with a description of the
problem.
THIS WARRANTY IS YOUR ONLY REMEDY. NO OTHER
WARRANTIES, SUCH AS FITNESS FOR A PARTICULAR
PURPOSE, ARE EXPRESSED OR IMPLIED. FLUKE IS NOT
LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL OR
CONSEQUENTIAL DAMAGES OR LOSSES, ARISING FROM
ANY CAUSE OR THEORY. Since some states or countries do
not allow the exclusion or limitation of an implied warranty or of
incidental or consequential damages, this limitation of liability
may not apply to you.
11/99
京公网安备 11010802033920号
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved
电子工程世界
