Rockwell-automation 1734-IT2I Thermocouple and RTD Input Module User M Instrukcja Użytkownika Strona 41

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Publication 1734-UM004F-EN-E - December 2012
Configure Your Module 31
Configure Your RTD Input
Module
Configuration is divided into basic and advanced parameters.
Basic Setup Parameters
The basic parameters you need to set for the RTD module consist of:
Temperature units – Use the Temperature Scale parameter to select a
predefined scale or a custom scale. Custom Scale allows you to enter the
scaling endpoint values. If using Ohms RTD Type, ignore this
parameter. Predefined Scales include: Celsius(C), Fahrenheit(F),
Kelvin(K), and Rankine(R).
Scaling Endpoints for Custom Scale (low & high):
RTD type – Select the RTD type that the input uses. Valid types are
shown in the table.
Copper RTD Offset – If using the copper RTD, this is the error of the
Copper RTD (10
Ω Cu427) in Ohms. Enter a value between -250 and
250 in hundredths of Ohms (such as 361 = 3.61
Ω). This value is added
to the input reading before linearization.
RTD Module Scaling Limits
RTD Type Low Scaling
Endpoint
High Scaling
Endpoint
Ohms 100 Ω 500 Ω
100 Ω Ptα = 0.00385 Euro 32 °F (0 °C) 932 °F (500 °C)
200 Ω Ptα = 0.00385 Euro 32 °F (0 °C) 932 °F (500 °C)
100 Ω Ptα = 0.003916 U.S. 32 °F (0 °C) 932 °F (500 °C)
200 Ω Ptα = 0.003916 U.S. 32 °F (0 °C) 932 °F (500 °C)
10 Ω Cuα = 0.00427 32 °F (0 °C) 482 °F (250 °C)
100 Ω Niα = 0.00618 32 °F (0 °C) 482 °F (250 °C)
120 Ω Niα = 0.00672 32 °F (0 °C) 482 °F (250 °C)
120 Ω Niα = 0.00618 32 °F (0 °C) 482 °F (250 °C)
RTD Type (1734-IR2E) Low Scaling
Endpoint
High Scaling
Endpoint
Ohms 100 Ω 200 Ω
100 Ω Ptα = 0.00385 Euro 32 °F (0 °C) 572 °F (300 °C)
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