DSCA42 2-Wire Transmitter Interface Signal Conditioner With Loop Power

from 283,50 €

excl. 19% VAT , plus (Standard)

From	Unit price
5	302,40 € *
10	289,80 € *
20	283,50 € *

Accepts Process Loop Signals
Industry Standard Output of either 0-10V, 2-10V, 0-20mA, or 4-20mA
Provides Isolated Loop Excitation
1500Vrms Transformer Isolation
ATEX Compliant

Input Range
Output Range

Description

Accepts Process Loop Signals
Industry Standard Output of either 0-10V, 2-10V, 0-20mA, or 4-20mA
1500Vrms Transformer Isolation
Input Protected to 240VAC Continuous
True 3-Way Isolation
105dB CMR
5 Poles of Filtering
±0.03% Accuracy ; ±0.01% Linearity
ATEX Compliant

Each DSCA42 2-wire transmitter interface module provides a single channel of 4 to 20mA process current input which is filtered, isolated, amplified, and converted to a high-level voltage output. An isolated 24V power supply is provided to power the 2-wire transmitter. Signal filtering is accomplished with a five-pole filter which is optimized for step response. An anti-aliasing pole is located on the field side of the isolation barrier, and the other four poles are on the system side. After the initial field-side filtering, the input signal is chopped by a proprietary chopper circuit. Isolation is provided by transformer coupling, again using a proprietary technique to suppress transmission of common mode spikes or surges.

The module output is either voltage or current. For current output models a dedicated loop supply is provided at terminal 3 (+OUT) with loop return located at terminal 4 (-OUT). The system-side load may be either floating or grounded.

Special input circuits provide protection against accidental connection of powerline voltages up to 240VAC and against transient events as defined by ANSI/ IEEE C37.90.1. Protection circuits are also present on the signal output and power input terminals to guard against transient events and power reversal. Signal and power lines are secured to the module using screw terminals which are in pluggable terminal blocks for ease of system assembly and reconfiguration.

The modules have excellent stability over time and do not require recalibration, however, zero and span settings are adjustable up to ±5% to accommodate situations where fine-tuning is desired. The adjustments are made using potentiometers located under the front panel label and are non-interactive for ease of use.