1551A Ex & 1552A Ex

Accurate and repeatable to ± 0.05 °C over its full range, the 1551A/1552A “Stik Thermometer is the new “gold standard” of industrial temperature calibration

1551A Ex & 1552A Ex

 

Finally, a digital substitute for your mercury-in-glass thermometers!

Accurate and repeatable to ± 0.05 °C over its full range, the 1551A/1552A “Stik Thermometer is the new “gold standard" of industrial temperature calibration. Whether working outdoors in environments where potentially explosive gases may be present or on the floor of a processing plant, the intrinsically-safe, battery operated, portable reference thermometer is designed to go where you work.

Features at a glance

  • Accuracy of ± 0.05 °C (± 0.09 °F) over full range
  • Intrinsically safe (ATEX and IECEx compliant)
  • Two models to choose from (-50 °C to 160 °C or -80 °C to 300 °C)
  • User-configurable temperature Trend/Stability indicator
  • Display temperature in °C or °F
  • Optional data logging to internal memory
  • 300-hour battery life
  • Percent battery-life and low-battery indicator
  • NVLAP-accredited, NIST-traceable calibration included

Accurate and repeatable to ± 0.05 °C over its full range, the 1551A/1552A “Stik Thermometer is the new “gold standard" of industrial temperature calibration

 

Specifications

1551A Ex

1552A Ex
Temperature range -50 °C to 160 °C
(-58 °F to 320 °F)		 -80 °C to 300 °C
( -112 °F to 572 °F)
Accuracy (1 year) ± 0.05 °C (± 0.09 °F)
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 (0.1 in)
Minimum immersion depth 7 cm (2.8 in) 12 cm (4.8 in)
Probe sheath material Stainless steel
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 seconds, 1 seconds, 2 seconds (default 1 seconds)
Operating temperature range readout -10 °C to 50 °C (14 °F to 122 °F)
Temperature resolution Selectable: 0.1, 0.01, 0.001 (default 0.01)
Sample rate Selectable: 0.5 seconds, 1 seconds, 2 seconds (default 1 seconds)
Operating temperature range readout -10 °C to 50 °C (14 °F to 122 °F)
Storage temperature -20 °C to 60 °C (-4 °F to 140 °F) 0 % to 95 % RH, non-condensing
Optional data logging1 Up to 10,000 time-stamped readings stored to internal memory
Logging intervals1 2 seconds, 5 seconds, 10 seconds, 30 seconds, or 60 seconds;
2 minutes, 5 minutes, 10 minutes, 30 minutes, or 60 minutes
Damping Moving average of the most recent 2 to 10 readings
(ON/OFF, 2, 5, 10)
Communications RS-232 stereo jack (access calibration parameters only)
AC power None
DC power 3-AAA Batteries, typical battery life of 300 hours without LCD backlight
EMC compliance EN61326:2006 Annex C; CISPR II Edition 5.0-2009; Class “B
Enclosure rating IP50
Electronics dimensions (H x W x D) 114 mm x 57 mm x 25 mm
(4.5 in x 2.25 in x 1.0 in)
Weight 196 g (6.9 oz)
Calibration (included) NVLAP-accredited, NIST-traceable
Characterization CVD ITS-90

1See ordering information for optional data logging configurations

 

 

Model Name

Description
1551A-9

1551A Ex Thermometer, Fixed RTD, -50 °C to 160 °C, 4.8 mm x 229 mm (3/16 in x 9 in)

Includes NVLAP-accredited report of calibration, User’s Guide on CD-ROM, 3 AAA batteries
1551A-12

1551A Ex Thermometer, Fixed RTD, –50 °C to 160 °C, 6.35 mm x 305 mm (1/4 in x 12 in)

Includes NVLAP-accredited report of calibration, User’s Guide on CD-ROM, 3 AAA batteries
1551A-20

1551A Ex Thermometer, Fixed RTD, -50 °C to 160 °C, 6.35 mm x 508 mm (1/4 in x 20 in)

Includes NVLAP-accredited report of calibration, User’s Guide on CD-ROM, 3 AAA batteries
1551A-9-DL

1551A Ex Datalogging options Thermometer, Fixed RTD, -50 °C to 160 °C, 4.8 mm x 229 mm (3/16 in x 9 in) with Datalog

Includes NVLAP-accredited report of calibration, User’s Guide on CD-ROM, 3 AAA batteries
1551A-12-DL

1551A Ex Datalogging options Thermometer, Fixed RTD, -50 °C to 160 °C, 6.35 mm x 305 mm (1/4 in x 12 in) with Datalog

Includes NVLAP-accredited report of calibration, User’s Guide on CD-ROM, 3 AAA batteries
1551A-20-DL

1551A Ex Datalogging options Thermometer, Fixed RTD, –50 °C to 160 °C, 6.35 mm x 508 mm (1/4 in x 20 in) with Datalog

Includes NVLAP-accredited report of calibration, User’s Guide on CD-ROM, 3 AAA batteries
1552A-12

Thermometer, Fixed PRT, -80 °C to 300 °C, 6.35 mm x 305 mm (1/4 in x 12 in)

Includes NVLAP-accredited report of calibration, User’s Guide on CD-ROM, 3 AAA batteries
1552A-12-DL

Thermometer, Fixed PRT, -80 °C to 300 °C, 6.35 mm x 305 mm (1/4 in x 12 in) with Datalog

Includes NVLAP-accredited report of calibration, User’s Guide on CD-ROM, 3 AAA batteries

 

 

Accessories common to all models:

   

Accessory

Description
1551-CASE Case, 1551-2, Carrying
1551-CBL Cable, RS-232 155X

 

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