Table of Contents
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1 Introduction and Safety Information
The Hart 1529 is a low-cost, high-accuracy, digital thermometer readout designed to
be used with 25 and 100 W PRTs, thermistors, and thermocouples. Its unique combi-
nation of features makes it suitable for a wide variety of applications from laboratory
measurement to industrial processes. Features of the 1529 include:
Measures 25 W and 100 W PRTs, thermistors, and thermocouples
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Four inputs: two PRT/thermistor and two thermocouple (standard configuration)
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Four-wire connection eliminates lead resistance effects in PRTs
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Three-wire measurement mode for three-wire RTDs
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Exclusive patented mini-DWF connectors (U.S. Patent No. 5,964,625)
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Automatic current reversal eliminates thermoelectric EMF errors
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Accuracy: PRTs to 0.006 °C, thermistors to 0.002 °C, and thermocouples to
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0.3 °C
Typical resolution: PRTs 0.001 °C, thermistors 0.0001 °C, thermocouples
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0.01 °C
Measures four sensors simultaneously with a fast one-second measurement
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cycle
Measures one sensor at 10 readings per second (limited accuracy)
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Adjustable moving average for extra precision
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Stores over 8,000 measurements internally
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Accepts ITS-90, PT-100 (ASTM E1137, DIN 43760, or IEC-751), and
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Callendar-Van Dusen PRT characterizations
Accepts Steinhart-Hart R(T) or T(R) and YSI-400 type thermistor
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characterizations
Accepts thermocouple types B, E, J, K, N, R, S, T, Au-Pt, and polynomial
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specified
Temperature offsets for improved thermocouple accuracy
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Stores 10 additional sets of probe parameters
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Eight programmable display sets for display probe information, measurement
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statistical data, or difference between measurements
Password protection of settings
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Large, LCD, user-configurable, display viewable in bright or dim lighting
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Serial RS-232 interface standard; IEEE-488 GPIB interface optional
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Powered by external AC supply, 12-15V DC source, or internal rechargeable
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battery
1.1 Symbols Used
Table 1 lists the International Electrical Symbols. Some or all of these symbols may be
used on the instrument or in this guide.
Introduction and Safety Information
Symbols Used
1
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