Fluke 902 FC User manual

PN 4748982
December 2015
© 2015 Fluke Corporation. All rights reserved. Specifications are subject to
change without notice. All product names are trademarks of their respective
companies.
902 FC
HVAC True-rms Clamp Meter
99 Washington Street
Melrose, MA 02176
Phone [phone]
Toll Free 1-800-517-8431
Visit us at www.TestEquipmentDepot.com

LIMITED WARRANTY AND LIMITATION OF LIABILITY
This Fluke product will be free from defects in material and
workmanship for three 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.

i
Table of Contents
Title Page
Introduction ................................................................ 1
How to Contact Fluke................................................. 2
Safety Information...................................................... 3
Product Familiarization .............................................. 9
Use the Product ......................................................... 12
Measure AC and DC Voltage .................................. 12
Measure Resistance and Continuity........................ 13
Measure Microamps μA.......................................... 14
Measure Temperature............................................. 16
Measure Capacitance ............................................. 18
Measure AC Current ............................................... 18
Backlight.................................................................. 20
MIN MAX Recording Mode...................................... 20
Display HOLD.......................................................... 21
Auto Off ................................................................... 21
Maintenance .............................................................. 22
Clean the Product.................................................... 22
Battery Replacement............................................... 23
Replacement Parts .................................................... 25
Fluke Connect............................................................ 25
Specifications............................................................. 26
Electrical Specifications........................................... 26
General Specifications ............................................ 27

902 FC
Users Manual
ii

1
Introduction
The Fluke 902 FC is a hand-held battery-operated HVAC True-rms
Clamp Meter (the Product) that measures:
•AC
current
•DC current (up to 200 μA for flame rod testing through input
terminals)
•AC and DC voltages
•Capacitance
•Resistance
•Continuity
•Temperature in both Celsius (°C) and Fahrenheit (°F)
The Product comes with:
•Two AA alkaline batteries (installed)
•Users Manual
•Soft carrying case
•TL75 Test Leads (one pair)
•80BK Integrated Temperature Probe (the Probe)
•Fluke
Connect

902 FC
Users Manual
2

HVAC True-rms Clamp Meter
Safety Information
3
Safety Information
A Warning identifies conditions and procedures that are
dangerous to the user. A Caution identifies conditions and
procedures that can cause damage to the Product or the
equipment under test.
XWWarning
To prevent possible electrical shock, fire, or personal
injury:
•Carefully read all instructions.
•Read all safety information before you use the
Product.
•Use the Product only as specified, or the protection
supplied by the Product can be compromised.
•Do not use the Product around explosive gas, vapor,
or in damp or wet environments.
•Do not use the Product if it is damaged
•Disable the Product if it is damaged.
•Do not use the Product if it operates incorrectly.
•Use only correct measurement category (CAT),
voltage, and amperage rated probes, test leads, and
adapters for the measurement.

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Users Manual
4
•Do not exceed the Measurement Category (CAT)
rating of the lowest rated individual component of a
Product, probe, or accessory.
•Comply with local and national safety codes. Use
personal protective equipment (approved rubber
gloves, face protection, and flame-resistant clothes)
to prevent shock and arc blast injury where
hazardous live conductors are exposed.
•Before each use, examine the Product. Look for
cracks or missing pieces of the clamp housing or
output cable insulation. Also look for loose or
weakened components. Carefully examine the
insulation around the jaws.
•Do not use test leads if they are damaged. Examine
the test leads for damaged insulation and measure a
known voltage.
•Do not touch voltages >30 V ac rms, 42 V ac peak, or
60 V dc.
•Do not measure current while the test leads are in the
input jacks.
•Do not apply more than the rated voltage, between the
terminals or between each terminal and earth ground.
•Measure a known voltage first to make sure that the
Product operates correctly.

HVAC True-rms Clamp Meter
Safety Information
5
•Limit operation to the specified measurement
category, voltage, or amperage ratings.
•The battery door must be closed and locked before
you operate the Product.
•Remove all probes, test leads, and accessories before
the battery door is opened.
•Keep fingers behind the finger guards on the probes.
•Hold the Product behind the tactile barrier.
•Replace the batteries when the low battery indicator
shows to prevent incorrect measurements.
•Do not use the HOLD function to measure unknown
potentials. When HOLD is turned on, the display does
not change when a different potential is measured.
•Disconnect power and discharge all high-voltage
capacitors before you measure resistance, continuity,
capacitance, or a diode junction.
•Remove the input signals before you clean the
Product.
•Use only specified replacement parts.

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Users Manual
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•When batteries are changed, ensure that the
calibration seal in the battery compartment is not
damaged. If damaged, the Product may not be safe to
use. Return the Product to Fluke for replacement of
the seal.
•Do not use in CAT III or CAT IV environments without
the protective cap installed. The protective cap
decreases the exposed probe metal to <4 mm. This
decreases the possibility of arc flash from short
circuits.
•Have an approved technician repair the Product.
•Repair the Product before use if the battery leaks.
•Remove the batteries if the Product is not used for an
extended period of time, or if stored in temperatures
above 50 °C. If the batteries are not removed, battery
leakage can damage the Product.
WCaution
To avoid possible damage to the Product or to equipment
under test:
•Use the proper jacks, function, and range for the
measurement application.
•Clean the case and accessories with a damp cloth and
mild detergent only. Do not use abrasives or solvents.

HVAC True-rms Clamp Meter
Safety Information
7
Table 1 lists the symbols used on the Product and in this manual.
Table 1. Symbols
Symbol Description
Consult user documentation.
WWARNING. RISK OF DANGER.
XWARNING. HAZARDOUS VOLTAGE. Risk of
electric shock.
,Application around and removal from uninsulated
hazardous live conductors is permitted.
AC (Alternating Current)
DC (Direct Current)

Both direct and alternating current
Earth
Battery. Low battery when shown on display.
TDouble Insulated

Measurement Category II is applicable to test and
measuring circuits connected directly to utilization
points (socket outlets and similar points) of the low-
voltage MAINS installation.

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Users Manual
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Table 1. Symbols (cont.)
Symbol Description

Measurement Category III is applicable to test and
measuring circuits connected to the distribution part
of the building’s low-voltage MAINS installation.

Measurement Category IV is applicable to test and
measuring circuits connected at the source of the
building’s low-voltage MAINS installation.
PConforms to European Union directives.
Certified by TÜV SÜD Product Service.
Conforms to relevant Australian EMC standards.
)Certified by CSA Group to North American safety
standards.
~
This product complies with the WEEE Directive
marking requirements. The affixed label indicates
that you must not discard this electrical/electronic
product in domestic household waste. Product
Category: With reference to the equipment types in
the WEEE Directive Annex I, this product is classed
as category 9 "Monitoring and Control
Instrumentation" product. Do not dispose of this
product as unsorted municipal waste.

HVAC True-rms Clamp Meter
Product Familiarization
9
Product Familiarization
Figure 1 and Table 2 show the features of the Product.
1
2
3
4
11
9
8
7
6
5
10
iad01.eps
Figure 1. Product Features

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Users Manual
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Table 2. Product Features
Item Description
Fluke Connect
Jaw release
Tactile barrier
Jaws
Hold button

Rotary switch:
AC and DC voltage
Resistance and continuity
DC microamps
Degrees Fahrenheit / degrees Celsius
Capacitance
AC current
OFF Turns off the Product
Display
Backlight button
MIN MAX button
Input Terminals
AC/DC, button

HVAC True-rms Clamp Meter
Product Familiarization
11
Table 3 shows the items on the display.
Table 3. Display
1
2
3
4 6 7 98
10
11
5
iad06.eps
Item Description
Battery is low and should be changed
Indicates the presence of high voltage
ID number
Indicates minimum or maximum recording mode

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Users Manual
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Table 3. Display (cont.)
Item Description
Beeper
Display Hold is active
Volts
Fluke Connect is enabled
Degrees (Farenheit or Celcius)
Amps

Ohms
Microamps
Microfarads
DC Direct Current
AC Alternating Current
Use the Product
Measure AC and DC Voltage
1. Insert the test leads into the Product.
2. Turn the rotary switch to .
3. Push
to choose ac or dc voltage.

HVAC True-rms Clamp Meter
Use the Product
13
The chosen voltage mode shows on the display.
4. Measure the voltage by touching the probes to the correct test
points of the circuit.
5. Read the measured voltage on the display.
Note
When a measured voltage is above 30 V, shows on
the display. When the voltage drops below 30 V, 
disappears.
Measure Resistance and Continuity
XW Warning
To avoid false readings that can lead to electrical
shock and injury, de-energize the circuit before
taking the measurement.
To measure resistance or continuity:
1. Insert the test leads into the Product.
2. Turn the rotary switch to .

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Users Manual
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3. Measure the resistance by touching the probes to the desired
test points of the circuit.
4. Read the measured resistance on the display.
Note
If the resistance is <30
e , the continuity beeper sounds
and indicates a short circuit.
Measure Microamps μ A
The μA dc () function on the Product is primarily for HVAC flame
rod testing.
To test a heating system flame rod (see Figure 2):
1. Turn the heating unit off.
2. Locate the wire between the gas-burner controller and the
flame rod, and break this connection.
3. Turn the rotary switch to .
4. Use alligator clips to connect test leads between the flame
sensor probe and control-module wire.
5. Turn heating unit on.
6. Read the measured amps on the display.
7. Refer to the heating unit documentation for what the desired
value should be.

HVAC True-rms Clamp Meter
Use the Product
15
Burner
Gas Burner
Controller
Gas Burner
Controller
iad04.eps
Figure 2. Test a Flame Rod

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Users Manual
16
Measure Temperature
The Product measures temperature in either Celsius (°C) or
Fahrenheit (°F).
XW Warning
To prevent possible electrical shock, fire, or
personal injury, do not touch voltages >30 V ac rms,
42 V ac peak, or 60 V dc.
To measure temperature (see Figure 3):
1. Connect the Probe to the input jacks noting correct polarity of
the probe.
2. Turn the rotary switch to .
3. Push
to select °C or °F.
The chosen temperature mode shows on the display.
4. Position the Probe to take the measurement.
5. Read the measured temperature on the display.
Note
To meet stated accuracy, the Product and plug of the
Probe must be at the same temperature.