dsca38-21 Dataforth Corporation, dsca38-21 Datasheet

dsca38-21

Manufacturer Part Number

dsca38-21

Description

Strain Gage Input Signal Conditioners

Manufacturer

Dataforth Corporation

Datasheet

1.DSCA38-21.pdf (2 pages)

Current page: 1 of 2
Download datasheet (224Kb)

DSCA38

Strain Gage Input Signal Conditioners

Description

Each DSCA38 strain gage input module provides a single channel of strain gage

input which is filtered, isolated, amplified, and converted to a high-level voltage

output. 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 DSCA38 can interface to transducers with a nominal resistance of 100

10k

3.333V source. This source is fully isolated, allowing the amplifier inputs to

operate over the full range of the excitation voltage. This feature enables the

module to be interfaced to other sensors requiring exctitation.

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 signal input and excitation protection against

accidental connection of power-line 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

Figure 1: DSCA38 Block Diagram

Ω

200

. Strain gage excitation is provided from the module by a stable 10V or

For information call 800-444-7644

Ω

situations where fine-tuning is desired. The zero adjustment can be used to

offset bridge imbalances. The adjustments are made using potentiometers

located under the front panel label and are non-interactive for ease of use.

High Performance Signal Conditioners

• Interfaces to 100

• Industry Standard Output of either ±10V,

• 1500Vrms Transformer Isolation

• ANSI/IEEE C37.90.1 Transient Protection

• Input Protected to 240VAC Continuous

• True 3-Way Isolation

• Wide Range of Supply Voltage

• 100dB CMR

• Fully Isolated Excitation Supply

• ±0.03% Accuracy

• ±0.01% Linearity

• Easily Mounts on Standard DIN Rail

• C-UL-US Listed

• CE and ATEX Compliant

0-20mA, or 4-20mA

Features

Ω

through 10k

Ω

Strain Gages

DSCA

Related parts for dsca38-21

dsca38-21 Summary of contents

Page 1

... DSCA38 Strain Gage Input Signal Conditioners Description Each DSCA38 strain gage input module provides a single channel of strain gage input which is filtered, isolated, amplified, and converted to a high-level voltage output. 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 ...

Page 2

... DSCA38-16 See Ordering Information DSCA38-17 600Ω max DSCA38-18 8mA (V ), 30mA (I ) OUT OUT DSCA38-19 Continuous DSCA38-20 ANSI/IEEE C37.90.1 DSCA38-21 1500Vrms max † Output Ranges Available ANSI/IEEE C37.90.1 Output Range 50VDC max 100dB 1. 10V to +10V – ±0.03% Span +10V ±0.01% Span 3 ...

Related keywords

dsca38-21 datasheet
dsca38-21 data sheet
dsca38-21 pdf datasheet
dsca38-21 component
dsca38-21 part
dsca38-21 distributor
dsca38-21 RoHS
dsca38-21 datasheet download