Fluke Thermometer 1551A EX User Manual

1551A Ex/1552A Ex  
Stik Thermometer  
Users Manual  
November 2010  
© 2010 Fluke Corporation. All rights reserved. Specifications are subject to change without notice.  
All product names are trademarks of their respective companies.  
 
Table of Contents  
Title  
Page  
Introduction........................................................................................................ 1  
Features.............................................................................................................. 1  
How to Contact Fluke........................................................................................ 2  
Safety Information ............................................................................................. 2  
ATEX Safety Information ............................................................................. 3  
Symbols......................................................................................................... 4  
Approvals ...................................................................................................... 4  
Operation ........................................................................................................... 5  
Immersion Depth and Usage ......................................................................... 5  
Display and Controls..................................................................................... 7  
Primary Display ........................................................................................ 8  
Stability Display........................................................................................ 8  
Setup and Configuration................................................................................ 8  
Temperature Unit Selection ...................................................................... 8  
Stability Limit ........................................................................................... 8  
Auto-Off Selection.................................................................................... 9  
Battery Life ............................................................................................... 9  
Operating Temperature ............................................................................. 9  
Damping.................................................................................................... 9  
Sampling Rate........................................................................................... 9  
Display Resolution.................................................................................... 10  
RS232 Communication............................................................................. 10  
Ohms Display............................................................................................ 10  
Start or Stop Data Logging ....................................................................... 10  
Display Free Log Memory ............................................................................ 10  
Logging Interval........................................................................................ 11  
Send Logged Data..................................................................................... 11  
Erase Logged Data .................................................................................... 11  
Maintenance....................................................................................................... 11  
Clean the Product .......................................................................................... 11  
Battery Replacement ..................................................................................... 11  
Battery Life.................................................................................................... 13  
Calibration..................................................................................................... 13  
SCPI Commands................................................................................................ 13  
RS-232 Interface................................................................................................ 13  
Specifications..................................................................................................... 13  
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1551A Ex/1552A Ex  
Users Manual  
ii  
 
List of Tables  
Table  
Title  
Page  
1.  
2.  
Symbols.................................................................................................................. 4  
Approved Batteries................................................................................................. 12  
iii  
 
1551A Ex/1552A Ex  
Users Manual  
iv  
 
List of Figures  
Figure  
Title  
Page  
1.  
2.  
3.  
4.  
Probe Measurements .............................................................................................. 5  
Immersion Depth.................................................................................................... 6  
Display and Controls.............................................................................................. 7  
Battery Replacement .............................................................................................. 12  
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1551A Ex/1552A Ex  
Users Manual  
vi  
 
Introduction  
The Stik Thermometer (the Product) is a precision digital thermometer that can be used  
as an alternative to mercury liquid-in-glass (LIG) thermometers. It can also be used as a  
reference standard for other types of digital or analog thermometers. Because of its  
intrinsically safe certification, it can be used in many of the same hazardous locations as  
analog thermometers.  
When you receive the Product, check that it is intact. The batteries are factory installed.  
Keep the shipping materials until you have made sure that there is no concealed damage.  
Features  
This section tells you about the features of the Product.  
The 1551A Ex Probe contains a fast-responding thin-film sensor that makes accurate  
measurements quickly and with minimal immersion depth. The Probe is available in  
three versions:  
4.8 mm x 229 mm (3/16 in. x 9 in.)  
6.35 mm x 305 mm (1/4 in. x 12 in.)  
6.35 mm x 508 mm (1/4 in. x 20 in.)  
The 1552A Ex Probe contains a stable, wire-wound platinum sensor with a  
6.35 mm x 305 mm (1/4 in. x 12 in.) length sheath.  
A rotatable probe mount lets the display module be turned horizontally or vertically.  
A unique feature of the Product is the trend indication arrows. You can configure the  
arrows to show when the measurements are adequately stable to record a result.  
The auto-off feature gives extended battery life of 300 hours maximum. The typical user  
may only have to change the batteries a few times a year.  
Added features let you tailor the Product for specific applications.  
These features include:  
0.05 °C accuracy over full range  
Intrinsically safe (ATEX compliant)  
Display temperature in °C or °F  
Temperature trend indicator  
User-selectable resolution (0.1, 0.01, 0.001)  
Large LCD with backlight  
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1551A/1552A Ex  
Users Manual  
300 hour battery life  
Percent battery life and low-battery indicator  
NVLAP accredited calibration (NIST traceable)  
How to Contact Fluke  
To contact Fluke, call one of the following telephone numbers:  
Technical Support USA: 1-800-44-FLUKE (1-800-443-5853)  
Calibration/Repair USA: 1-888-99-FLUKE (1-888-993-5853)  
Canada: 1-800-36-FLUKE (1-800-363-5853)  
Europe: +31 402-675-200  
Japan: +81-3-3434-0181  
Singapore: +65-738-5655  
Anywhere in the world: +1-425-446-5500  
Or, visit Fluke's website at www.fluke.com.  
To register your product, visit http://register.fluke.com.  
To see, print, or download the latest manual supplement, visit  
Safety Information  
A Warning identifies conditions and actions that pose hazard(s) to the user. A Caution  
identifies conditions and procedures that could cause Product damage, equipment under  
test damage, or permanent loss of data.  
Symbols used on the Product and in this manual are explained in Table 1.  
XWWarning  
To prevent possible electrical shock, fire, or personal injury:  
Use the Product only as specified, or the protection  
supplied by the Product can be compromised.  
Do not use the Product to measure the temperature of  
hazardous live components.  
Do not open the Product case. If you open the case, the Ex  
approval is not applicable.  
Change the batteries only in areas that are not Ex-hazardous.  
Use only specified approved batteries in the Product. Refer  
to the battery replacement instructions for a list of approved  
batteries.  
Do not use and disable the Product if it is damaged.  
Replace the batteries when the low battery indicator shows  
to prevent incorrect measurements.  
2
 
 
Stik Thermometer  
Safety Information  
Check for proper operation of the Product before taking it  
into a hazardous area. Should the Product not operate as  
expected do not take the Product into a hazardous area and  
return it to the manufacturer for inspection.  
The Product is intended for installation only in locations  
providing adequate protection against the entry of solid  
foreign objects or water capable of impairing safety.  
WCaution  
To prevent possible damage to the Product or to equipment  
under test:  
If the display message changes to “OL,” the range limit is  
exceeded and the Product must immediately be removed  
from the heat source to prevent damage.  
Do not immerse the Probe beyond its maximum immersion  
depth. This may damage its internal electronics. See  
“Immersion Depth and Usage” later in this manual.  
DO NOT drop or strike the Probe in any way. Mechanical  
shock damages the Probe internally and affects it  
calibration.  
If the Product overheats or is exposed to sudden physical shock, examine it for damage that  
can cause a safety risk. If possible, compare the displayed temperature to a known reference  
before Product use. If not sure, send the Product to Fluke Corporation. Refer to “How to  
Contact Fluke”.  
Substitution of components will impair suitability for hazardous locations.  
ATEX Safety Information  
This manual contains data and safety regulations that must be followed for safe, reliable  
use of the Product in hazardous areas under the detailed conditions. If you do not follow  
these instructions, personal injury or Product damage can occur. Violation of applicable  
legislation can also occur. Read the full manual before you use the Product. To make sure  
of safe Product operation, fully follow all instructions and warnings in the manual. If you  
are not sure (due to translation and/or printing errors), refer to the English manual.  
An “Ex-hazardous area,” as used in this manual, refers to an area made hazardous by the  
possible presence of flammable or explosive vapors. These areas are also referred to as  
“hazardous locations.”  
Ex ib IIB T4 Gb (–10 °C  
ITS10ATEX27114X  
Ta +50 °C)  
Ex ib IIB T4 Gb  
II 2 G IECEx ITS10.0049  
0344  
Manufactured by Martel Electronics, Inc.,  
3 Corporate Park Dr.  
Derry, NH, USA  
gjo006.eps  
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1551A/1552A Ex  
Users Manual  
Symbols  
International symbols used on the Product and in this manual are explained in Table 1.  
Table 1. Symbols  
Symbol  
Symbol  
Meaning  
Meaning  
Earth ground  
Battery  
J
M
Risk of Danger. Important information.  
See Manual.  
Hazardous Voltage  
W
X
Do not dispose of this product as  
unsorted municipal waste. Go to  
Fluke’s website for recycling  
information.  
Conforms to ATEX requirements  
~
(
Conforms to relevant European Union directives.  
P
Approvals  
The Product meets the above requirements using:  
EN 60079-0:2006 ELECTRICAL APPARATUS FOR  
EXPLOSIVE GAS ATMOSPHERES -- PART  
0: GENERAL REQUIREMENTS (IEC  
60079-0:2004 (MOD))  
EN 60079-11:2007  
EXPLOSIVE ATMOSPHERES -- PART 11:  
EQUIPMENT PROTECTION BY INTRINSIC  
SAFETY "I" (IEC 60079-11:2006 (EQV) +  
CORRIGENDUM DEC. 2006 (EQV))  
Manufactured by Fluke Corporation:  
Fluke Corporation  
P.O. Box 9090  
Everett, WA 98206-9090  
U.S.A.  
P.O. Box 1186  
5602 BD Eindhoven  
The Netherlands  
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Stik Thermometer  
Operation  
Operation  
Immersion Depth and Usage  
WCaution  
To prevent possible damage to the Product or to equipment  
under test, do not immerse the Probe beyond the maximum  
immersion depth. This may damage its internal electronics.  
Allow enough time for the Probe to stabilize before recording measurements. Use the  
Stability Display to determine when the Probe has stabilized.  
Probe sensor length is shown in Figure 1.  
3
1
2
gjo004.eps  
Sheath Length:  
A
1551A-9: 229 mm (9 in)  
1551A-20: 508 mm (20 in)  
1551A-12/1552A-12: 305 mm (12 in)  
Sensor Length:  
B
C
1551A: 10 mm (0.39 in)  
1552A: 30 mm (1.18 in)  
Sheath Diameter:  
1551A-9: 4.8 mm (3/16 in)  
1551A-12/1551A-20/1552A: 6.35 mm (1/4 in)  
Figure 1. Probe Measurements  
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1551A/1552A Ex  
Users Manual  
The minimum immersion depth for the Probe is 3.5 inches in a stirred fluid heat source. It  
is recommended that you make sure of the minimum immersion depth for the specific  
application. See Figure 2.  
The maximum immersion depth for the 1551A Ex is 2 inches less than the total  
length. Make sure the last 2 inches of Probe, nearest to the internal electronics of the  
device, are not put into the heat source.  
The maximum immersion depth for the 1552A Ex is 3 inches less than the total  
length. Make sure the last 3 inches of the Probe, nearest to the internal electronics of  
the device, are not put into the heat source.  
gjo002.eps  
1552A Ex: Maximum immersion: 3 inches less than total probe length.  
1551A Ex: Maximum immersion: 2 inches less than total probe length.  
A
B
Figure 2. Immersion Depth  
6
 
 
Stik Thermometer  
Operation  
Display and Controls  
The Display and Controls are explained below and in the Setup and Configuration section.  
See Figure 3.  
6
7
5
10  
9
3
4
1
2
8
gjo001.eps  
Number  
Item  
Description  
A
Push to power the Product on and off. Hold the button down at power-up to  
check the display to see that all display segments are shown.  
D
B
C
D
Push to toggle the main display value between min, max, and trend modes.  
Push to change the various set-up parameters of the Product.  
A
B
C
Push to enter data in set-up modes. When the Product is displaying  
temperature, push C to activate the backlight.  
E
Primary  
Display  
Shows the temperature values in °C or °F. Also used in set-up mode.  
Used in regular and setup modes.  
F
G
Icon area  
Stability  
Display  
Shows the trend and stability of data.  
H
Arrow  
Buttons  
Secondary functions of Aand B. Enter data in the setup modes.  
I
J
Backlight symbol.  
M
Flashes when the batteries need to be changed.  
E
Figure 3. Display and Controls  
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1551A/1552A Ex  
Users Manual  
Primary Display  
Push Ato toggle the numeric display between the current reading, minimum,  
maximum, and 1-minute trend values in °C or °F as calculated since power up or since  
the last reset of values. Push and hold the A button for 2 seconds until "CLR" shows  
to reset the MIN/MAX/TREND values.  
Stability Display  
The Stability Display shows the general stability level relative to a user-configurable  
stability limit. There are four presets for stability shown in °C or °F (0.01, 0.1, 1.0, or  
10.0). When the limit is exceeded, it also shows the general direction in which the  
readings are presently moving. The stability level is calculated from a moving sample  
window of 6 seconds, with the value extrapolated to a 1-minute time base.  
Segments are turned on to indicate the stability level as follows:  
Center only (stable) - when half of the 1-minute trend value is less than or equal to  
the stability limit, i.e. maximum deviation -limit to +limit.  
Center plus one arrow up or down (depending on the trend) - when half of the 1-  
minute trend value is greater than the stability limit and is less than or equal to twice  
the stability limit.  
Center plus two arrows up or down (depending on the trend) - when half of the 1-  
minute trend value is greater than twice the stability limit and is less than or equal to  
three times the stability limit.  
Center plus three arrows up or down (depending on the trend) - when half of the 1-  
minute trend value is greater than three times the stability limit.  
Setup and Configuration  
Push B to enter the setup modes. Inside the setup modes the buttons work as follows:  
A
B
C
Exit to the main display.  
Step to the next menu item, exit to the main display after the last item.  
Enter the data-edit mode for the present menu item.  
During the data-edit mode, use K and L to scroll through the values. Push C to save  
and exit back to the menu item.  
The following sections describe the setup items in the order in which they appear.  
Temperature Unit Selection  
The Temperature Unit Selection Menu lets you choose the unit used when showing the  
primary variable.  
K
L
Change the unit °C or °F.  
Change the unit °C or °F.  
Exit back to menu item  
C
Stability Limit  
The stability limit setting is used to find when the secondary display will show that the  
reading is stable. There are four preset settings for stability (0.01, 0.1, 1.0, or 10.0)  
expressed in the presently selected units.  
K
Change the unit-stability limit setting to the next greater setting.  
Change the unit-stability limit setting to the next lesser setting.  
Exit back to menu item  
L
C
8
 
 
Stik Thermometer  
Operation  
Auto-Off Selection  
The Auto-off parameters control when the Product automatically turns off after inactivity  
on the keypad.  
K
Increase the auto-off setting and the primary data field from "OFF" to 1 minute  
and stopping at 20 minutes.  
L
Decrease the auto-off setting and the primary data field from 1 minute to "OFF"  
and stopping at "OFF".  
C
Exit back to menu item.  
Battery Life  
Initially, the primary data field shows the percentage of remaining battery life. This  
display can be toggled to show the battery voltage and is constantly updated to show  
current battery capacity.  
Push C to toggle between the two data displays.  
Operating Temperature  
This selection shows the operating temperature of the internal electronics in °C or °F.  
K
Change the unit °C or °F.  
Change the unit °C or °F.  
Exit back to menu item.  
L
C
Note  
An “Overtemp” warning is shown if the internal electronics temperature  
is more than 50 °C (122 °F).  
Damping  
The Damping function is a running average of readings used to filter "noisy" temperature  
sources. The selections are OFF, 2, 5, or 10 sample average.  
K
Change the damp setting to the subsequent item in the list, cycling from the last  
to the first.  
L
Change the damp setting to the previous item in the list, cycling from the first to  
the last.  
C
Exit back to menu item.  
Sampling Rate  
The sampling rate calculates how often the Product samples data. The settings are 0.5, 1.0,  
or 2.0, shown in samples per second.  
K
Change the rate setting to the subsequent item in the list, cycling from the last to  
the first.  
L
Change the rate setting to the previous item in the list, cycling from the first to  
the last.  
C
Exit back to menu item.  
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1551A/1552A Ex  
Users Manual  
Display Resolution  
Display resolution is the number of digits to the right of the decimal point. The settings  
are 0.1, 0.01, or 0.001.  
K
Change the resolution setting to the subsequent item in the list, cycling from the  
last to the first.  
L
Change the resolution setting to the previous item in the list, cycling from the  
first to the last.  
C
Exit back to menu item.  
RS232 Communication  
The baud rate can be set to 2400 or 9600.  
K
Change the RS232 communication setting in the list, cycling from the last to the  
first.  
L
Change the RS232 communication setting to the previous item in the list, cycling  
from the first to the last.  
C
Exit back to menu item.  
Ohms Display  
The Primary Display shows the resistance of the sensor. The secondary data field  
displays “OHMS”. C is inactive.  
Note  
The Data Logging functions that follow are only functional in Products that  
were purchased with option Data Logging configuration (e.g. 155X-D-X).  
Start or Stop Data Logging  
Logging status messages are:  
FULL the data logging memory is full  
OFF not presently logging data  
ON  
presently logging data  
Push C to change the logging status.  
Push K and L if not currently logging data, to choose between START and OFF. If  
presently logging data, choose between STOP and ON. The current data logging mode is  
not changed until C is pushed.  
C
Stop or start data logging.  
Display Free Log Memory  
Initially, the primary data field shows the percentage of log memory. This display can be  
toggled to show the number of free records and is updated continually during data  
logging to show the current memory capacity.  
Push C to toggle between the two data displays.  
10  
 
 
Stik Thermometer  
Maintenance  
Logging Interval  
Push C to enter the data edit mode. ENTER is ignored if presently logging data.  
K
Change the logging interval setting to the subsequent item in the list, cycling  
from the last to the first.  
L
Change the logging interval setting to the previous item in the list, cycling from  
the first to the last.  
C
Return to the corresponding menu item.  
Send Logged Data  
Push C to:  
K or L  
C
Confirm or cancel the choice to send data.  
Send or cancel data.  
C
is ignored if presently logging data.  
Erase Logged Data  
Push C to:  
K or L  
C
Confirm or cancel the choice to erase logged data.  
Erase or cancel data erase.  
C
is ignored if presently logging data.  
Maintenance  
Clean the Product  
WCaution  
To prevent possible damage to the product or to equipment  
under test, do not use abrasive cleaners. They will damage the  
case.  
To clean the Product, use a cloth with a mild cleaning solution.  
Battery Replacement  
XWWarning  
To prevent possible explosion, fire, or personal injury:  
Change the batteries only in areas that are not Ex-hazardous.  
Replace the batteries when the low battery indicator shows  
to prevent incorrect measurements.  
WCaution  
To prevent possible damage to the Product or to equipment  
under test:  
Remove batteries to prevent battery leakage and damage to  
the Product if it is not used for an extended period.  
Be sure that the battery polarity is correct to prevent battery  
leakage.  
11  
 
 
1551A/1552A Ex  
Users Manual  
To change the batteries, see Figure 4:  
1. Use a flat-blade screwdriver to remove the battery door screw.  
2. Remove the battery door to access the three AAA batteries.  
3. Replace only with approved AAA batteries listed in this document. See Table 2. Any  
substitution voids the Product safety rating.  
4. Make sure the battery polarity is correct.  
5. Replace the battery door and install the screw.  
gjo003.eps  
Figure 4. Battery Replacement  
Table 2. Approved Batteries  
Battery  
Alkaline AAA  
Manufacturer  
Type  
LR03/MN2400  
Duracell  
Rayovac  
Energizer  
LR03/824  
LR03/E92  
LR03X  
Panasonic  
12  
 
 
Stik Thermometer  
SCPI Commands  
Battery Life  
Battery life is approximately 300 hours (12.5 days) of continuous operation with the  
backlight off. A low-battery icon (E) shows in the lower right of the display when  
battery level is low. Replace batteries per recommendations found in the specifications  
section of this manual.  
Calibration  
For calibration information, refer to the document on the documentation CD.  
SCPI Commands  
For a list of the SCPI commands, refer to the document on the documentation CD.  
RS-232 Interface  
An RS-232 interface is standard on the Product. Serial communication can be used for  
configuration, calibration, and to move measurement data from the Product. An RS-232  
cable is included with data logging software purchase.  
XWWarning  
To prevent possible electrical shock, fire, or personal injury, the  
RS-232 interface must not be used in hazardous areas.  
Specifications  
(Ambient: 23 °C 5 °C)  
Measurement Range  
1551A Ex ......................................................................... 50 °C to 160 °C (58 °F to 320 °F)  
1552A Ex ......................................................................... 80 °C to 300 °C (112 °F to 572 °F)  
Accuracy (1 year) ..................................................................... 0.05 °C (0.09 °F)  
Resolution ................................................................................. Selectable (0.1, 0.01, 0.001) factory default is 0.01  
Sample Rate ............................................................................. User selectable 0.5/sec, 1/sec or 2/sec factory default is  
1/sec  
Operating Temperature Range of Readout: .......................... 10 °C to 50 °C (14 °F to 122 °F)  
Probe Response Time .............................................................. Approximately 20 seconds  
EMC Compliance....................................................................... EN61326:2006 Annex C  
CISPR 11, Edition 5.0-2009  
Class “B”  
Humidity Range......................................................................... 0 to 95 % RH Non-condensing  
Storage Temperature Range.................................................... 20 °C to 60 °C (4 °F to 140 °F)  
Enclosure Rating ...................................................................... IP50  
Readout Temperature Coefficient ........................................... Add 10 ppm/°C of full scale temperature from 10 °C to  
18 °C and 28 °C to 50 °C  
Probe Temperature Coefficient .............................................. 0.00385 Ω/Ω/°C nominal  
Nominal Probe Resistance at 0 °C .......................................... 100 Ω  
Probe Hysteresis....................................................................... 0.01 °C  
Power ......................................................................................... 3 AAA alkaline batteries  
(Must use only approved batteries. See Table 2)  
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1551A/1552A Ex  
Users Manual  
Battery Life ................................................................................ Approximately 300 hours without back light  
Battery Save (auto-off) Range ................................................. Selectable from 1 to 30 minutes or can be disabled  
Size (readout only).................................................................... Approximately 4 in. x 2 in. x 1 in.  
Probe Size.................................................................................. 1551A-9: 4.8 mm x 229 mm (3/16 in. x 9 in.)  
1551A-12: 6.35 mm x 305 mm (1/4 in. x 12 in.)  
1551A-20: 6.35 mm x 508 mm (1/4 in. x 20 in.)  
1552A: 6.35 mm x 305 mm (1/4 in. x 12 in.)  
Weight........................................................................................ 6.9 oz  
14  
 

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