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