Fluke 1502A 'Tweener' PRT Thermometer

One of Fluke best-selling products is the Tweener thermometer, and there’s a reason. No other company, not one, has a thermometer that comes close to the performance and features of the Tweener. The 1502A Tweener features accuracy up to + 0.006°C. Each Tweener is programmable to match a probe’s constants for maximum linearity and accuracy. All probe constants and coefficients are programmed through simple, front-panel keystrokes. Temperature is displayed in °C, °F, K, or resistance in ohms. The 1502A is calibrated digitally using the front-panel buttons. You never have to open the box to calibrate it. This calibration protocol further reduces the cost of the 1502A. It goes where you go and works the way you want it to. FEATURES Measures 25Ω and 100Ω RTDs and SPRTs. Four-wire connection eliminates lead resistance effects. Fast one-second measurement cycle. Adjustable digital filter. Accepts ITS-90 characterization coefficients. Also accepts Callendar-Van Dusen and IPTS-68 coefficients. Adjustable excitation current. Password protection of critical parameters. Serial RS-232 interface standard; IEEE-488 GPIB interface optional. Detachable power cord. Light weight, small and portable. Sturdy, reliable construction. Fluke 1502A Specifications Temperature Range? ?200 °C to 962 °C (?328 °F to 1764 °F). Resistance Range 0 Ω to 400 Ω, auto-ranging. Probe Nominal RTPW: 10Ω to 100Ω RTD, PRT, or SPRT. Characterisations ITS-90 subranges 4, 6, 7, 8, 9, 10, and 11 IPTS-68: R0, a, d, a4, and c4 Callendar-Van Dusen: R0, a, d, and b. Resistance Accuracy (ppm of reading) 0Ω to 20Ω: 0.0005W 20Ω to 400Ω: 25 ppm. Temperature Accuracy? +0.004 °C at ?100 °C +0.006 °C at 0 °C +0.009 °C at 100 °C +0.012 °C at 200 °C +0.018 °C at 400 °C +0.024 °C at 600 °C. Operating Temperature Range 16 °C to 30 °C. Resistance Resolution 0 Ω to 20 Ω: 0.0001 Ω 20 Ω to 400 Ω: 0.001 Ω. Temperature Resolution 0.001 °C. Excitation Current 0.5 and 1 mA, user selectable, 2 Hz. Measurement Period 1 second. Digital Filter Exponential, 0 to 60 seconds time constant (user selectable). Probe Connection 4-wire with shield, 5-pin DIN connector. Communications RS-232 serial standard IEEE-488 (GPIB) optional. Display 8-digit, 7-segment, yellow-green LED; 0.5-inch-high characters. Power 115 VAC (+10 %), 50/60 Hz, 1 A, nominal 230 VAC (+10 %), 50/60 Hz, 1 A, nominal, specify. Probes from Hart 5615, 5627, 5626, 5628, 5622. Calibration ISO 17025-accredited calibration provided. Dimensions (H x W x D) 61 x 143 x 181mm (2.4 x 5.6 x 7.1 in). Weight 1.0 kg (2.2 lb.). Fluke 1502A 'Tweener' Warranty 1 year. ?Temperature ranges and accuracy may be limited by the sensor you use.

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