Fluke 1551A/1552A Intrinsically Safe Thermometers

Accurate, stable, and durable, the Fluke Calibration 1551A/1552A Connector thermometers are intrinsically safe for use in hazardous environments.

Manufacturer part number (MPN)

3624136 Brand: Fluke Category: Tools Temperature range: -50°C to 160°C (-58°F to 320°F) Accuracy (1 year): ±0.05°C (±0.09°F) Temperature resolution: Selectable: 0.1, 0.01, 0.001 (default 0.01) Sample rate: Selectable: 0.5 seconds, 1 second, 2 seconds (default 1 second) 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 Response time: 4.8 mm diameter probe (3/16 in): 14 seconds 6.35 mm diameter probe (1/4 in): 21 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 Display units: °C, °F Sensor type: 100 Ω thin-film RTD Sensor length: ≤ 10 mm Sensor position (from sheath tip): 3 mm (0.1 in) minimum immersion depth: Wet medium (liquid bath, thermowell with thermal compound) 70 mm (2.8 in) Dry medium (dry-well, thermowell without thermal compound) 120 mm (4.8 in) Maximum immersion depth: 50 mm (2 in) less than the total length. Make sure the last 50 mm of probe, nearest to the internal electronics of the device, are not put into the heat source. Probe sheath material: Stainless steel 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 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) DC power: 3-AAA alkaline batteries See Users Manual for approved batteries Battery life: Approximately 300 hours (12.5 days) of continuous operation with the backlight off. Battery save (auto-off) range: Selectable from 1 to 30 minutes or can be disabled Safety: IEC 60079-0, IEC 60079-11: Ex ib IIB T4 Gb; IEC 61010-1: Pollution Degree 2 Size (readout only): 125 mm x 62 mm x 35 mm (5 in x 2.5 in x 1.4 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) Weight: 196 g (6.9 oz) Calibration (included): accredited, NIST-traceable Characterization: CVD

HS Code

9025.19

• OEM-URL https://www.fluke.com/en-us/product/calibration-tools/temperature-calibrators/fluke-calibration-1551a