1551A Ex/1552A Ex
Intrinsically Safe
“Stik” Thermometers
The new “gold standard”
of industrial temperature
calibration
Fluke Corporation
PO Box 9090, Everett, WA USA 98206
Fluke Europe B.V.
P.O. Box 1186, 5602 BD Eindhoven
The Netherlands
For more information call:
In the U.S.A. (800) 443-5853
or Fax (425) 446 -5116
In Europe/M-East/Africa +31 (0)40 2 675 200
or Fax +31 (0)40 2 675 222
In Canada (800)-36-FLUKE
or Fax (905) 890-6866
From other countries +1 (425) 446 -5500
or Fax +1 (425) 446 -5116
Web: www.fluke.com
©Fluke Corporation.
Specifications subject to change without notice.
Printed in the Netherlands. Pub-ID 11699-eng
Fluke Calibration.
Precision, performance, confidence.™
1551A Ex 1552A Ex
Temperature range –50 °C to 160 °C –80 °C to 300 °C
Accuracy (1 year) ±0.05 °C
Display units °C, °F
Sensor type 100 Ω thin film RTD 100 Ω wire-wound PRT
Probe temperature coefficient 0.00385 Ω/Ω/°C nominal
Sensor length ≤ 10 mm ≤ 30 mm
Sensor position (from sheath tip) 3 mm
Minimum immersion depth170 mm 120 mm
Probe sheath material SST
Response time 4.8 mm diameter probe (3/16 in): 14 seconds
6.35 mm diameter probe (1/4 in): 21 seconds
Probe hysteresis ±0.01 °C
Temperature resolution Selectable: 0.1, 0.01, 0.001 (default 0.01)
Sample rate Selectable: 0.5, 1, 2, seconds (default 1)
Operating temperature range of readout –10 to 50 °C
Storage temperature –20 °C to 60 °C , 0 to 95% RH, non-condensing
Optional data logging2 Up to 10k time-stamped readings stored to internal memory
Logging intervals2 2, 5, 10, 30, or 60 seconds; 2, 5, 10, 30, or 60 minutes
Averaging Moving average of most recent 2 to 10 readings, user selectable
(ON/OFF, 2,5,10)
Communications RS-232 stereo jack (access calibration parameters only)
EMC compliance EN61326:2006 Annex C; CISPR II, Edition 5.0-2009; Class “B”
Enclosure rating IP50
Calibration NVLAP accredited, NIST Traceable System Calibration
Characterization CVD ITS-90
1 Per ASTM E 644
2 See ordering information for optional data logging configurations
1551A Ex / 1552A Ex Intrinsically
Safe “Stik” Thermometers
Included Accessories
NVLAP –accredited report of calibration, user’s
guide on CD-ROM, 3 AAA batteries
Ordering Information
1551A-9 “Stik” Thermometer
1551A-12 “Stik” Thermometer
1551A-20 “Stik” Thermometer
1551A-9-DL “Stik” Thermometer with
datalogging
1551A-12-DL “Stik” Thermometer with
datalogging
1551A-20-DL “Stik” Thermometer with
datalogging
1552A-12 “Stik” Thermometer
1552A-12-DL “Stik” Thermometer with
datalogging
Note: Model number appended with a -9, -12, -20
indicates probe sheath length in inches. All probe
diameters are 6.35 mm with the exception of the
1551A-9, which is 4.8 mm diameter
Finally, a digital substitute for your
mercury-in-glass thermometers! Highly
accurate and durable, the Fluke 1551A
Ex/1552A Ex “Stik” Thermometer is soon
to become the new “gold standard” of
industrial temperature calibration.
Whether working outdoors in
environments where potentially
explosive gases may be present or on
the  oor of a processing plant, the
intrinsically safe, battery-operated,
portable reference thermometer is
designed to go where you work.
The RTD sensor of the “Stik” Thermometer
is housed in a rugged stainless steel
sheath—you no longer have to worry
about breaking a mercury-in-glass
thermometer and the subsequent
cleanup. The probe and digital readout
are  xed together, calibrated as a system,
and accurate to ± 0.05 °C over the full
temperature range. The large backlit
LCD display rotates 90° making it easy
to read from any position. Minimize
measurement errors with the user-
con gurable temperature trend/stability
indicator which tells you when your
temperature source is stable or if your
temperature is trending up or down.
• ± 0.05 °C accuracy over full range
• Intrinsically safe (ATEX compliant)
• Display temperature in °C or °F
Optional data logging to internal
memory
• Temperature trend indicator
User selectable resolution (0.1, 0.01,
0.001)
• 300 hour battery life
Percent battery-life and low battery
indicator
NVLAP accredited calibration
(NIST traceable)
Battery Life: 300 hours typical without LCD, 3 AAA
Size (HxWxD): 114 x 57 x 25 mm
Weight: 196 grams
Warranty: 1 year
Specifi cations
The new “gold standard” of industrial
temperature calibration
1552A Ex
1551A Ex
1551-CASE
Carrying case
1551-CBL
RS-232 cable
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