Practical-instrument-electronics 521 Manual do Utilizador descarregar pdf (Página 3)

Model 520/521

Operating Instructions

Connection Diagram

Two Wire Connection to Transmitter

Specifications

General Specifications:

(Unless otherwise indicated all specifications are rated from a nominal 23 °C, 70 % RH for 1 year from

calibration)

Temperature Range -25 to 60 °C (-10 to 140 °F)

Relative Humidity

Range

10 % ≤RH ≤90 % (0 to 35 °C), Non-condensing

10 % ≤RH≤ 70 % (35 to 60 °C), Non-condensing

Size 4.9 X 3.15 X 1.82 inches (125.5 X 80 X 46.2 mm)

Weight 7.2 oz (204 grams)

Battery 9V Alkaline provides 45 hours of continuous use

Miscellaneous Low battery indication with nominal 1 hour of operation left

Overload Protected to 60V for 30 seconds or less

High contrast graphic liquid crystal display with

0.357” (9.07 mm) high digits

Source Thermocouple Specifications (ITS-90 Curves):

Millivolt Uncertainty

Temperature Coefficient of mV Source

Output Noise

Output Impedance

±(0.015% of mV Setting + 0.009 mV)

±0.005mV/°C Ambient

±5µVpp from 0.1 Hz to 10 Hz

0.2

Ω

Cold Junction Uncertainty

Cold Junction Sensor Temperature

Coefficient

±0.25°C (0.5°F)

±0.05°/° in ambient temperature (°C or °F)

General Temperature Accuracy ±(0.015% of mV setting + 0.009mV) ± 0.25°C (0.5°F)

Output Dial Adjustment Resolution 0.1°C or °F for Model 521/1°C or °F for Model 520

Span -13.000 - 80.000 mV

841 Holt Road #1 • Webster, NY 14580 Tel: 585-872-9350 • Fax: 585-872-2638 [email protected] • http://www.piecal.com/

520/521-9002 2/25/04 3-4

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