Pt100 thermometer 1551A-9

RTDwith LCD display°C

Product overview
The Fluke 1551A 'Stik' reference thermometer is an intrinsically safe, battery-powered portable thermometer designed for industrial temperature calibration and field checks. It offers repeatable measurements with an accuracy of ±0.05 °C across the -50 °C to 160 °C range and is calibrated as an integrated probe-plus-readout system.

Key features

• Intrinsically safe operation (ATEX and IECEx compliant)
• Reference accuracy ±0.05 °C (±0.09 °F) over full range
• Temperature range: -50 °C to 160 °C (-58 °F to 320 °F)
• User-configurable trend/stability indicator and selectable resolution
• Fixed 100 Ω RTD sensor with stainless steel probe
• Optional internal data logging (up to 10,000 time-stamped readings)

Other useful features

• Large rotating backlit LCD for easy viewing
• Auto-off and low-battery percent indicator to prevent erroneous readings
• Approximately 300 hours battery life (3 × AAA, backlight off)
• Includes accredited NVLAP report and NIST-traceable calibration

Specifications (summary)
Temperature range: -50 °C to 160 °C (-58 °F to 320 °F)
Accuracy (1 year): ±0.05 °C (±0.09 °F)
Resolution: selectable 0.1 / 0.01 / 0.001 (default 0.01)
Sample rate: selectable 0.5 s / 1 s / 2 s (default 1 s)
Probe options: 4.8 mm × 229 mm; 6.35 mm × 305 mm; 6.35 mm × 508 mm
Minimum immersion: wet 70 mm; dry 120 mm
Optional logging: up to 10,000 readings; logging intervals configurable
Communications: RS-232 (stereo jack) for calibration access only
Power: 3 × AAA alkaline; battery save auto-off configurable
Safety: IEC 60079-0, IEC 60079-11 Ex ib IIB T4 Gb; IEC 61010-1
Size (readout): 125 × 62 × 35 mm; weight: 196 g

Models and contents

• Fluke 1551A-9 — fixed RTD 4.8 mm × 229 mm; includes NVLAP-accredited calibration report, User's Guide (CD-ROM), 3 AAA batteries
• Fluke 1551A-12 — fixed RTD 6.35 mm × 305 mm; includes NVLAP-accredited calibration report, User's Guide, 3 AAA batteries
• Fluke 1551A-20 — fixed RTD 6.35 mm × 508 mm; includes NVLAP-accredited calibration report, User's Guide, 3 AAA batteries
• DL variants (e.g., 1551A-9-DL) add data-logging capability

Included documentation

• User manual, safety sheet, calibration manual(s), SCPI instruction sheet provided by the manufacturer