Fluke Thermometer 07 402 User Manual

Nuclear Associates 07-402  
Portable Digital Thermometer  
Operators Manual  
August 2007  
Manual No. 07-402-1 Rev. 3  
©2004, 2005, 2007 Fluke Corporation, All rights reserved.  
All product names are trademarks of their respective companies  
 
Table of Contents  
Section 1:  
1.1  
Introduction................................................................................................ 1-1  
Introduction.................................................................................................. 1-1  
Section 2:  
2.1  
Operating Instructions .............................................................................. 2-1  
Measure Temperature ................................................................................. 2-1  
Display Min/Max Readings .......................................................................... 2-1  
Clear Min/Max Memory................................................................................ 2-1  
The “Hold” Function ..................................................................................... 2-1  
Select Degrees C Display............................................................................ 2-1  
Backlight the Display ................................................................................... 2-2  
Disable the Auto-Shutoff.............................................................................. 2-2  
Battery Replacement ................................................................................... 2-2  
Specifications............................................................................................... 2-2  
2.2  
2.3  
2.4  
2.5  
2.6  
2.7  
2.8  
2.9  
i
 
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Introduction  
1
Introduction  
Section 1  
Introduction  
1.1 Introduction  
The Portable Digital Thermometer provides a rapid and reliable means of checking solution temperatures  
in x-ray film processors. It features a detachable temperature-sensing probe with a 3-foot coiled cord,  
and an LCD digital display. When the tip of the immersion probe is placed in a solution, accurate  
temperature readings appear within seconds. The digital display eliminates the possibility of error that  
can result from the misreading of stem-type dial thermometers. Detachable immersion probes are time-  
savers for the busy x-ray department that has several film processors. A permanently positioned probe  
eliminates the need for removing the cover of the processor. Simply leave one probe in each processor  
and plug it into the instrument. The use of multiple probes, each remaining in a specific tank, also  
eliminates possible cross-contamination of chemicals from tank to tank. When mounting the probe  
permanently to the processor, the probe tip should be positioned so it is approximately 2” beneath the  
liquid’s surface. Make sure the probe housing is out of the solution.  
This battery-operated, shock-resistant read-out unit has solid-state electronics and needs no adjustments  
to maintain high accuracy. Calibration is traceable to the National Institute of Standards and Technology.  
This instrument comes with a high-impact plastic storage case with room for additional probes.  
NOTE  
This unit is calibrated to standards traceable to the  
National Institute of Standard and Technology  
(NIST)  
1-1  
 
Nuclear Associates 07-402  
Operators Manual  
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Operating Instructions  
2
Measure Temperature  
Section 2  
Operating Instructions  
2.1 Measure Temperature  
Press the ON button. The unit will display “888.8” for 2 to 3 seconds, then display the  
temperature. If there is no probe in the probe jack, the unit will display “LO”. Install the  
temperature probe into the probe jack (located above the display) to measure temperature.  
2.2 Display Min/Max Readings  
The Portable Digital Thermometer will display the lowest and highest temperature readings  
measured by the temperature probe since the unit was turned on. For example, while the unit is  
on, the temperature being measured changes from 40º F to 100º F (4.4º C to 37.8º C), then  
drops to 60º F (15.6º C). The display now shows 60º F (15.6º C). Press the MIN/MAX button. Dashes  
will appear, then the MIN value 40º F (4.4º C) for a few seconds, then the MAX value 100º F (37.8º C) for  
a few seconds, then back to the current probe temperature, 60º F (15.6º C). Note also that while the  
MIN/MAX values are being displayed, the small characters on the right-hand side of the display will blank  
out to indicate the MIN/MAX function. These characters will reappear when the actual probe reading is  
back on the display.  
2.3 Clear Min/Max Memory  
Press the MIN/MAX button to display MIN/MAX values. While the MIN/MAX are showing on the display,  
press the MIN/MAX button again. The display will show the letters “CL” to indicate that the memory has  
been cleared. The Portable Digital Thermometer will then resume displaying the current probe  
temperature on the display, and begin to store a new set of MIN/MAX values. If the unit is turned off,  
MIN/MAX values will be cleared.  
2.4 The “Hold” Function  
To “freeze” the current temperature reading on the display, press the HOLD button once. The  
temperature displayed will not change while the hold function is active. The display will alternate  
showing the temperature, and the word HOLD to indicate the hold function is still active. To  
return to normal mode, press the HOLD button once again.  
2.5 Select Degrees C Display  
The temperature scale is normally in degrees Fahrenheit. To display the temperature reading in  
degrees Celsius, press the ºF/ºC button. A small letter “C” will appear at the right side of the  
display to indicate readings in degrees Celsius.  
2-1  
 
Nuclear Associates 07-402  
Operators Manual  
2.6 Backlight the Display  
When used in dark locations, the display of the Portable Digital Thermometer can be illuminated  
by pressing the LIGHT/OC button. The backlight will turn off automatically after approximately 30  
seconds, or may be turned off manually by pressing the LIGHT/OC button a second time.  
2.7 Disable the Auto-Shutoff  
The Portable Digital Thermometer will normally turn itself off after 15 minutes. Pressing any of the  
buttons will delay the automatic shutoff for another 15 minutes. The technician can disable this auto-off  
feature by pressing the LIGHT/OC button three times within 5 seconds. The small º F (or º C if in Celsius  
scale) at the right side of the display will blink on and off to indicate that the unit is in “ON CONTINUOUS”  
mode and will not turn itself off. This function is useful for MIN/MAX data collection over extended time  
periods.  
NOTE  
You may wish to use the optional AC power  
adapter when in “ON CONTINUOUS” mode to  
prevent possible data loss due to battery failure.  
2.8 Battery Replacement  
When the battery in the Portable Digital Thermometer needs to be replaced, the display will show “LO P”.  
Replace the battery with a 9-volt alkaline or equivalent NEDA type 1604A battery.  
CAUTION  
This unit is not waterproof. Do not immerse for  
cleaning. If unit becomes wet inside because of  
cleaning, rain or condensation, unstable readings  
may occur.  
NOT INTENDED FOR HUMAN  
MEDICAL USE.  
2.9 Specifications  
Accuracy: +0.3°F/0.2°C or +0.5% of reading, which ever is greater  
Optional Accessories  
07-403 -- Extra Immersion Probe  
07-401 -- Waterproof Probe; will not be damaged in chemistry or water  
2-2  
 
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Fluke Biomedical  
6045 Cochran Road  
Cleveland, Ohio 44139  
440.498.2564  
 

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