Fluke CNX t3000 Use and care manual

November 2012
© 2012 Fluke Corporation. All rights reserved. Specifications are subject to change without notice.
All product names are trademarks of their respective companies.
CNX t3000
Wireless K-Type Thermometer
Calibration Manual
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LIMITED WARRANTY AND LIMITATION OF LIABILITY
Each Fluke product is warranted to be free from defects in material and workmanship under normal use and
service. The warranty period is three years and begins on the date of shipment. Parts, product repairs, and
services are warranted for 90 days. This warranty extends only to the original buyer or end-user customer of
a Fluke authorized reseller, and does not apply to fuses, disposable batteries, or to any product which, in
Fluke's opinion, has been misused, altered, neglected, contaminated, or damaged by accident or abnormal
conditions of operation or handling. Fluke warrants that software will operate substantially in accordance
with its functional specifications for 90 days and that it has been properly recorded on non-defective media.
Fluke does not warrant that software will be error free or operate without interruption.
Fluke authorized resellers shall extend this warranty on new and unused products to end-user customers
only but have no authority to extend a greater or different warranty on behalf of Fluke. Warranty support is
available only if product is purchased through a Fluke authorized sales outlet or Buyer has paid the
applicable international price. Fluke reserves the right to invoice Buyer for importation costs of
repair/replacement parts when product purchased in one country is submitted for repair in another country.
Fluke's warranty obligation is limited, at Fluke's option, to refund of the purchase price, free of charge repair,
or replacement of a defective product which is returned to a Fluke authorized service center within the
warranty period.
To obtain warranty service, 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 difficulty,
postage and insurance prepaid (FOB Destination). Fluke assumes no risk for damage in transit. Following
warranty repair, the product will be returned to Buyer, transportation prepaid (FOB Destination). If Fluke
determines that failure was caused by neglect, misuse, contamination, alteration, accident, or abnormal
condition of operation or handling, including overvoltage failures caused by use outside the product’s
specified rating, or normal wear and tear of mechanical components, Fluke will provide an estimate of repair
costs and obtain authorization before commencing the work. Following repair, the product will be returned to
the Buyer transportation prepaid and the Buyer will be billed for the repair and return transportation charges
(FOB Shipping Point).
THIS WARRANTY IS BUYER'S SOLE AND EXCLUSIVE REMEDY AND IS IN LIEU OF ALL OTHER
WARRANTIES, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO ANY IMPLIED WARRANTY
OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. FLUKE SHALL NOT BE LIABLE
FOR ANY SPECIAL, INDIRECT, INCIDENTAL OR CONSEQUENTIAL DAMAGES OR LOSSES,
INCLUDING LOSS OF DATA, ARISING FROM ANY CAUSE OR THEORY.
Since some countries or states do not allow limitation of the term of an implied warranty, or exclusion or
limitation of incidental or consequential damages, the limitations and exclusions of this warranty may not
apply to every buyer. If any provision of this Warranty is held invalid or unenforceable by a court or other
decision-maker of competent jurisdiction, such holding will not affect the validity or enforceability of any other
provision.
11/99
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i
Table of Contents
Title Page
Introduction........................................................................................................ 1
Safety Information............................................................................................. 2
Symbols ............................................................................................................. 3
Specifications..................................................................................................... 4
Required Equipment .......................................................................................... 5
Performance Tests.............................................................................................. 6
Test the Display............................................................................................. 6
Backlight ....................................................................................................... 6
Keypad Test................................................................................................... 6
Temperature Test........................................................................................... 7
Before Calibration Adjustment.......................................................................... 8
Maintenance Mode........................................................................................ 8
Password Entry.............................................................................................. 8
Change the Password..................................................................................... 8
Restore the Default Password........................................................................ 9
Calibration Adjustment...................................................................................... 10
Maintenance....................................................................................................... 11
Clean the Product .......................................................................................... 11
Battery Replacement ..................................................................................... 11
User-Replaceable Parts...................................................................................... 12
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CNX t3000
Calibration Manual
ii
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iii
List of Tables
Table Title Page
1. Symbols.................................................................................................................. 3
2. Required Equipment............................................................................................... 5
3. Performance Tests.................................................................................................. 7
4. Calibration Adjustment.......................................................................................... 10
5. User-Replaceable Parts .......................................................................................... 12
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CNX t3000
Calibration Manual
iv
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v
List of Figures
Figure Title Page
1. All Segments of the Display................................................................................... 6
2. Performance Test Connections............................................................................... 7
3. Calibration Password Reset.................................................................................... 9
4. Battery Replacement.............................................................................................. 12
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CNX t3000
Calibration Manual
vi
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1
Introduction
Warning
Read "Safety Information" before you use the Product.
This manual has the verification and calibration adjustment procedures for the
CNX t3000 Wireless K-Type Thermometer (the Product). Please see the CNX t3000
Quick Reference Guide for usage information.
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CNX t3000
Calibration Manual
2
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.
 Warning
To prevent possible electrical shock, fire, or personal injury:
•Carefully read all instructions.
•Use the Product only as specified, or the protection
supplied by the Product can be compromised.
•Limit operation to the specified measurement category,
voltage, or amperage ratings.
•Do not touch voltages > 30 V ac rms, 42 V ac peak, or 60 V
dc.
•Do not use the Product around explosive gas, vapor, or in
damp or wet environments.
•Do not use, and disable the Product if it is damaged.
•Do not use the Product if it operates incorrectly.
•The battery door must be closed and locked before you
operate the Product.
•Replace the batteries when the low battery indicator shows
to prevent incorrect measurements.
•Have an approved technician repair the Product.
•Use only specified replacement parts.
•Do not connect directly to mains.
•For safe operation and maintenance of the Product:
•Remove batteries to prevent battery leakage and damage
to the Product if it is not used for an extended period.
•Repair the Product before use if the battery leaks.
•Be sure that the battery polarity is correct to prevent
battery leakage.
•Batteries contain hazardous chemicals that can cause
burns or explode. If exposure to chemicals occurs, clean
with water and get medical aid.
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Wireless K-Type Thermometer
Symbols
3
Symbols
The symbols in Table 1 are used on the Product or in this manual.
Table 1. Symbols
Symbol Meaning
Risk of Danger. Important information. See Manual.
Hazardous voltage
Double insulation
Battery
Earth ground
Conforms to European Union directives.
Conforms to relevant North American Safety Standards.
Conforms to relevant Australian EMC requirements.

This product complies with the WEEE Directive (2002/96/EC) 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. Go
to Fluke’s website for recycling information.
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CNX t3000
Calibration Manual
4
Specifications
Range .....................................................................K-type: -200 °C to 1372 °C (-328 °F to 2501 °F)
Resolution...............................................................0.1 °C/ 0.1 °F
Probe ......................................................................80PK-1 K-type bead probe
Accuracy.................................................................±(0.5 % of reading + 0.5 °C) counts, ±(0.5 % of reading + 0.9 °F)
counts not including thermocouple probe inaccuracies
Input Terminals.......................................................K-type mini
LCD w/Backlight......................................................3 ½ digits, 6000 counts, 1.6/sec update rate
Log Rate/Interval.....................................................adjustable by PC from 1 second to 1 hour
Memory...................................................................Record a maximum 65,000 readings
Battery Type............................................................2 AA, NEDA 15 A, IEC LR6
Battery Life..............................................................400 hours
RF Communications ...............................................2.4 GHz ISM Band
RF Communication Range......................................20 m (65.61 ft)
Operating Temperature...........................................-10 °C to +50 °C
Storage Temperature..............................................-40 °C to +60 °C with batteries removed
Temperature Scale .................................................ITS-90
Operating Humidity.................................................90 % from 0 °C to 35 °C, 75 % to 40 °C, 45 % to 50 °C
(90 % from 32 °F to 95 °F, 75 % to 104 °F, 45 % to 122 °F)
Operating Altitude……………………………………. 2,000 m (6561.68 ft)
Storage Altitude……………………………………… 12,000 m (39370.079 ft)
EMC
Applies to use in Korea only ...............................Class A Equipment (Industrial Broadcasting & Communication
Equipment) [1]
[1] This product meets requirements for industrial (Class A)
electromagnetic wave equipment and the seller or user should take
notice of it. This equipment is intended for use in business
environments and is not to be used in homes.
Ingress Protection (IP) rating..................................IP42
Radio Frequency Certification.................................FCC Part 15 Subpart C Sections 15.207, 15.209,
15.249, FCCID : T68-FWCS IC:6627A-FWCS
EM Environment .....................................................IEC 61236-1: Portable
Temperature Adder.................................................add 0.01 % of reading +0.03 °C / °C (<18 °C or >28 °C)
Size.........................................................................(160 tall x 66 wide x 38) mm
(6.3 tall x 2.6 wide x 1.5 deep) in
Weight.....................................................................0.255 kg (9 oz)
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Wireless K-Type Thermometer
Required Equipment
5
Required Equipment
The equipment in Table 2 is necessary for performance tests and calibration adjustment.
Table 2. Required Equipment
Equipment Required Characteristics Recommended
Model Notes
Calibrator
Output Voltage: 30 mV dc
Accuracy: ±0.125 %
Resolution: 0.1 µA Fluke 5500A Calibrator
(or equivalent)
Calibration only
Temperature Accuracy
Verification only
-25 to 100 °C
-200 to 1300 °C ±0.16 °C ±0.40 °C
Copper Wire Calibration only
Thermocouple
Connector Copper Fluke PN 601747 Calibration only
Thermocouple
Connector For K-type thermocouple Fluke 80CK-M
PN 779942 Verification only
K-type
Thermocouple
Wire Standard Omega Verification only
Use copper wire, not thermocouple wire, to source voltage during calibration. Use copper plugs with
copper wire. Use yellow K-type plugs and wires to source temperature.
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CNX t3000
Calibration Manual
6
Performance Tests
Warning
To prevent possible electrical shock, fire, or personal injury,
do not perform the performance test procedures unless the
Product is fully assembled.
The performance tests verify the full operation of the Product and measure the accuracy
of each function against Product specifications. If the Product fails a part of the test,
calibration adjustment and/or repair is necessary. See “Calibration Adjustment”.
Test the Display
To verify that all segments of the display function:
1. With the Product off, push and hold .
2. Push while you keep pushed until all of the display segments are shown. See
Figure 1.
Thelin ked imag e canno t be disp layed. Thefile may h ave been mov ed, ren amed, or d eleted. Verify thatthelin k po ints to the co rrect file an d locatio n.
hby002.eps
Figure 1. All Segments of the Display
If segments of the display are missing, repair is necessary. See “Contact Fluke”.
Backlight
To verify that the backlight functions:
1. With the Product on, push .
2. The backlight will come on. If it does not, repair is necessary. See “Contact Fluke”.
Keypad Test
To verify that the keypad functions, turn on the Product and push each button separately.
Each button push will turn on a display annunciator. If the buttons do nothing, repair is
necessary. See “Contact Fluke”.
Note
For the CNX t3000 SI, available only in Japan, the Cbutton does not
function.
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Wireless K-Type Thermometer
Performance Tests
7
Temperature Test
Before you do the temperature test:
1. Make sure that you have the necessary equipment. See Table 2.
2. Make sure the Product battery is good and replace it if necessary. See “Battery
Replacement”.
3. Warm up the Calibrator as necessary. Refer to its specifications.
4. Let the temperature of the unit under test (UUT) become stable to room temperature
(60 minutes minimum).
To do the temperature test:
1. Connect the Product to Calibrator with the K-type thermocouple wire and the
thermocouple connector. See Figure 2.
2. Apply the input level for each step shown in Table 3.
3. Compare the indication on the Product display with the UUT reading limits in
Table 3.
4. If the display indication falls outside of the range shown in Table 3, calibration
adjustment or repair of the Product is necessary. See “Calibration Adjustment”.
Table 3. Performance Tests
Test Calibrator Output Resolution Specification Low High
Temperature
(K-Type output)
-190 °C
0.1 °C ±[0.5 % + 0.5 °C]
-188.6 °C 191.5 °C
0 °C -0.5 °C 0.5 °C
100 °C 99.0 °C 101.0 °C
200 °C 198.5 °C 201.5 °C
1300 °C 1293 °C 1307 °C
0•
/
+
HI
LO
TC
1000V
RMS
MAX
20V
RMS
MAX
20V
PK
MAX
1V PK
MAX
20V PK
MAX
NORMAL AUX
TRIG
OUT
SCOPE
V, ,
RTD
A, -SENSE,
AUX V
150V PK
MAX
20V PK
MAX
5500A
CNX t3000
Use the WHITE wire and COPPER
connection for calibration (shown).
Use YELLOW plugs and K-TYPE
wire for performance tests.
hcb07.eps
Figure 2. Performance Test and Calibration Connections
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CNX t3000
Calibration Manual
8
Before Calibration Adjustment
Before the Product calibration can be adjusted, you must go through the maintenance
mode menu and enter your password.
Maintenance Mode
The Product maintenance mode can be used to set different parameters on the Product
that include auto power off, backlight adjustment, and calibration. To use the
maintenance mode:
1. With the Product off, push and hold .
2. Push . Keep pushed until all the display segments are shown.
3. Release and .
The Product is now in maintenance mode.
Password Entry
To go to the calibration mode, push five times until CAL is shown. You will need to
enter a password to access calibration mode.
To enter the password:
1. Push and the CAL version is shown. For example n002.
2. Push to show “????”.
3. Push to change the first digit of your password (default: 1234).
4. Push to confirm your choice. The subsequent “?” changes to “_”.
5. Do steps 3 and 4 again to enter the subsequent digits of the four-number password.
6. When all of the correct digits are entered, push to confirm the input.
If the correct password is entered, “C-01” is shown. If the incorrect password is
entered, “????” is shown and the password must be correctly entered.
Change the Password
Note
If you change the password and then lose it, see the “Restore the Default
Password” section.
To change the password:
1. Do steps 1 through 5 in the “Password Entry” section.
2. Before you push to confirm your final input (step 6), push to show “----” on
the display.
3. Push to change the first “-” to the first digit of your new password.
4. Push to confirm your choice.
5. Repeat steps 3 and 4 to enter the subsequent digits of the new four-number password.
6. When the correct digits are entered, push to confirm the input and change the
password. If the Product has been calibrated, it will go to normal measurement
mode.
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Some semiconductors and custom IC's can be
damaged by electrostatic discharge during
handling. This notice explains how you can
minimize the chances of destroying such devices
by:
1. Knowing that there is a problem.
2. Learning the guidelines for handling them.
3. Using the procedures, packaging, and
bench techniques that are recommended.
The following practices should be followed to minimize damage to S.S. (static sensitive) devices.
1. MINIMIZE HANDLING
2. KEEP PARTS IN ORIGINAL CONTAINERS
UNTIL READY FOR USE.
3. DISCHARGE PERSONAL STATIC BEFORE
HANDLING DEVICES. USE A HIGH RESIS-
TANCE GROUNDING WRIST STRAP.
4. HANDLE S.S. DEVICES BY THE BODY.
static awareness
A Message From
Fluke Corporation
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5. USE STATIC SHIELDING CONTAINERS FOR
HANDLING AND TRANSPORT.
6. DO NOT SLIDE S.S. DEVICES OVER
ANY SURFACE.
7. AVOID PLASTIC,VINYL AND STYROFOAM
IN WORK AREA.
8. WHEN REMOVING PLUG-IN ASSEMBLIES
HANDLE ONLY BY NON-CONDUCTIVE
EDGES AND NEVER TOUCH OPEN EDGE
CONNECTOR EXCEPT AT STATIC-FREE
WORK STATION. PLACING SHORTING
STRIPS ON EDGE CONNECTOR HELPS
PROTECT INSTALLED S.S. DEVICES.
9. HANDLE S.S. DEVICES ONLY AT A
STATIC-FREE WORK STATION.
10. ONLY ANTI-STATIC TYPE SOLDER-
SUCKERS SHOULD BE USED.
11. ONLY GROUNDED-TIP SOLDERING
IRONS SHOULD BE USED.
PORTIONS REPRINTED
WITH PERMISSION FROM TEKTRONIX INC.
AND GERNER DYNAMICS, POMONA DIV.
 Dow Chemical
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Wireless K-Type Thermometer
Before Calibration Adjustment
9
Restore the Default Password
If the calibration password is lost, the default password (1234) can be manually restored
with the subsequent steps:
 Warning
To prevent electric shock or personal injury, remove all input
signals before you open the Product.
1. Remove the Product battery door. See “Battery Replacement”.
2. With a Phillips screwdriver, remove the bottom case screws. Two of the screws are
inside of the battery door.
3. Keep the pca in the top case.
4. Apply 3.0 V across the battery contacts on the pca. Note the polarity that is shown in
Figure 3.
5. Push on the front of the Product.
6. Short across the CAL keypad on the pca. See Figure 3. The default password is now
restored.
7. Remove the 3.0 V supply and replace the bottom case, batteries, and battery door.
S6
J7
J3
J4
Short across calibration key
pads to reset default password
Battery
contacts
hcb08.eps
Figure 3. Calibration Password Reset
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CNX t3000
Calibration Manual
10
Calibration Adjustment
The Product features closed-case calibration adjustment and uses known reference
sources. The Product measures the applied reference source, calculates correction factors,
and stores the correction factors in nonvolatile memory.
Should the Product fail any of the performance tests, do the calibration adjustment
procedure.
When “C-01” is shown on the display, apply the correct input signal shown in Table 4 to
the Product. Then push to confirm the calibration step. If the input signal does not
satisfy the calibration requirement, “Err” is shown. If the signal is not stable, it can be
necessary to push several times to confirm the calibration.
After confirmation, the Product goes to the subsequent calibration step.
Note
After you push , wait until the calibration step number advances before
you change the Calibrator source. Some adjustment steps can take several
seconds to execute before the Product goes to the subsequent step.
Set the calibrator to Standby after you complete adjustment of each
function.
Input each signal to the Product in the sequence shown in Table 4. When the last
calibration point is recorded, “End” shows on the display.
Note
While the calibration adjustment points are shown in Table 4, the Product
also can show the necessary inputs. For each step, push to see the
necessary voltage input.
Note
To source 30 mV dc from the 5500A Calibrator thermocouple output, it is
necessary to select the 10 µV/°C Type from the softkey menu of the 5500A.
Then source 3000
° C. The connections are the same as in Figure 2 but it is
necessary to use the thermocouple and wire specified for calibration that is
shown in Table 2. Do not use the thermocouple and wire specified for the
performance test.
Table 4. Calibration Adjustment
Calibration Step Calibrator Output Signal
C-01 30 mV dc
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