Honeywell SC1000 Manual de usuario descargar pdf (Pagina 97)

SC Series Instruction Manual page 97

High-Level Input Channel12

Chapter 12

High-Level Input Channel

12.1 Features

The High-Level Input channel provides a DC supply voltage to and accepts volt-

age or current signals from amplified transducers such as pressure transducers,

load cells and DC-DC LVDTs. These signals are digitized, converted into engi-

neering units, and placed into the track, peak and valley data values of the chan-

nel. Setup and calibration of the channel is made manually through the SETUP

menu mode. Signature Calibration is not available with amplified transducers.

The analog-to-digital converter input circuit features adjustable digital, low-pass

filtering, 12- to 18-bit resolution (depending on the filter setting) and has several

different input ranges. These many ranges allow ±50,000 count resolution (at the

slowest filter setting) across a wide variety of input ranges.

A combination of SETUP menu items and hardware jumpers are used to config-

ure the excitation supply output voltage (+28 VDC, ±15 VDC, +15 VDC or +12

VDC), the input type (voltage or current) and input reference (differential or single

ended).

Two methods of calibrating the High-Level Input channel to the transducer are

available: known-load calibration and shunt calibration. The benefits of each are

discussed in “

CALIBRATION TYPE

Menu Item” on page 113.

Two rear panel control inputs can be field-configured for such functions as remote

tare, disabling peak/valley detection and clearing the peak/valley values. A volt-

age or current digital-to-analog output is also provided.

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Honeywell SC1000 Manual de usuario Pagina 97