FLUKE 1551A-20 STIK THERMOMETER, INTRINSICALLY SAFE, FIXED PRT, -50° TO 160°C OR -58° TO 320°F TEMPERATURE RANGE, 0.25" STEM DIAMETER, 20" STEM LENGTH

Finally, a digital substitute for your mercury-in-glass thermometers! Accurate and repeatable to ± 0.05 °C over its full range, the Fluke 1551A, Fluke 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. Industrial reference thermometers available on the market today, such as mercury-in-glass thermometers (or “ASTM thermometers") and portable electronic thermometers are useful, but both come with inherent problems. Although accurate and repeatable, mercury thermometers are fragile. The risk of a mercury spill poses potential hazards to the environment and to health. Many of the United States and European Union countries have already banned their use in industrial applications. Some organizations have replaced their mercury thermometers with more durable portable electronic thermometers, only to discover that the RTD probes lack the repeatability and dependability required of a legitimate reference thermometer. Using a glass-stem mercury- or spirit-filled thermometer at different immersion depths, or at significantly different ambient temperatures from which it was calibrated, may require the application of emergent-stem corrections that can be tedious but necessary to calculate an accurate measurement. This isn’t required with the “Stik" Thermometer. The sensor of the 1551A Ex requires a minimum immersion depth of only seven centimeters (2.8 inches), with no appreciable effect on the measured temperature due to heat loss through stem conduction. This isn’t the case for the “Stik" Thermometer. Your measurement remains accurate in ambient temperatures from -10 degrees to 50 degrees celsius (14 degrees to 122 degrees fahrenheit).

Intrinsically safe (ATEX and IECEx compliant), Large backlit LCD display rotates 90° making it easy to read from any angle, Display temperature in °C or °F, selectable resolution (0.1, 0.01, 0.001)

Accuracy of ±0.05°C (±0.09°F) over full range, User-configurable temperature trend/stability indicator to record an accurate measurement, NIST-traceable calibration included

Max/Min/Trend/Up key to see the maximum or minimum temperature since the most recent power up, 300-hour battery life, Percent battery indicator, 10,000 time-stamped measurements optionally available

Probe Temperature Coefficient: 0.00385 Ω/Ω/°C nominal, Response Time: 4.8mm (3/16") diameter probe: 14 sec, Probe Hysteresis: ±0.01°C, Sample Rate Selectable: 0.5, 1, 2 seconds

Logging Intervals: 2, 5, 10, 30, or 60 seconds; 2, 5, 10, 30, or 60 minutes, Damping: Moving average of the most recent 2 to 10 readings (ON/OFF, 2, 5, 10), Communications: RS-232 stereo jack