DSCL Series

Industrial Loop Isolators and Transmitters

DSCL ISOLATORS

Dataforth's DSCL series of isolators, along with the DSCP and SCTP product lines, provides a complete family of loop and universal AC/DC powered isolator and transmitter models in component, DIN rail, panel, and head-mount packages.

Basic loop powered isolators
Wide-range AC/DC powered isolators and transmitters
Fixed-gain models
Hardware and software configurable models

Depending on the model, they accept a wide range of voltage, current, thermocouple, and RTD input signals, then filter, isolate, amplify, linearize, and convert them to high-level analog outputs for use in data acquisition, test and measurement, and control system applications.

They protect valuable measurement and control signals as well as connected equipment from noise, transient power surges, internal ground loops, and other hazards present in industrial environments.

DSCL Loop Isolators, Loop Transmitters

Full Family of Loop Isolators and Transmitters
Signal Powered Passive Loop Isolator Models
Wide Range 24 to 60V or 85 to 230V AC/DC Powered Models
Jumper and Software Configurable Models
6.2mm Dip-switch Configurable Models
4000Vrms Isolation
PCB, DIN Rail, Panel Mount, or Instrument Head Mounting
Multiple Channels per Package Available
No Recalibration or Maintenance Required
Fault Detection of Input Signal Available
CE Compliant
Manufactured per RoHS Directive (EU) 2015/863 (RoHS 3)

DSCL Series Product Family

Part Number	Datasheet	User Manual	Description
DSCL20 Order Info			Loop Powered Isolator - "Component Module"
DSCL21 Order Info			Loop Powered Isolator - DIN Mount
DSCL22 Order Info			Loop Powered Isolator - DIN or Panel Mount
DSCL23 Order Info			4-20mA Isolator with DC Supply - DIN or Panel Mount
DSCL24 (multi-channel) Order Info			Factory Configurable Isolator - DIN or Panel Mount
DSCL24 (single channel) Order Info			Jumper Configurable Isolator - DIN or Panel Mount
Accessories Order Info			Accessories, backpanels, and module dimensions

Frequently Asked Questions

Can Dataforth provide calibration reports for modules I purchased?

Yes we can provide calibration reports for the modules that you purchased.

You can either
a) visit https://www.dataforth.com/TestDataReport.aspx to search for Test Report Datasheets by Serial Number or
b) you can send us a list of model numbers and their serial numbers to support@dataforth.com

Does Dataforth have a 4-channel 4-20mA isolator?

No. However, Dataforth does have two and three-channel 4-20mA isolators as shown in the following table.

Model Description
DSCL22-11 2-channel 4-20mA isolator
DSCL22-21 3-channel 4-20mA isolator
DSCL23-02 2-channel 4-20mA Isolator with DC Supply for 2-wire transmitter
DSCL24-11 2-channel 4-20mA isolator

Keywords/Phrases: 4-20mA isolator, 4-channel 4-20mA isolator, 4-channel 4-20mA DIN mount isolator

Does Dataforth have an isolator with one input featuring two or more outputs?

No, but this function can be implemented with a two or three channel loop isolator, such as DSCL22-11, DSCL22-21, DSCL24-11, or DSLC24-12. Connect all inputs in series with each other. Sum together all input burden voltages so as not to exceed the maximum loop voltage available.

Keywords/Phrases: DSCL, DSCL one input multi-output loop isolator, one input multi-output loop isolator

How does the load resistance of a module affect the noise at the output?

Noise at the output of a module is independent of load resistance.

Why do I see a -10V shift when I change to a DSCL23 from a DSCA42-01C or similar?

The DSCA42-01C internal electronics is powered by an overall power supply and then the module output circuitry provides the output current whose return side (or negative side) is connected internally to the power supply common. This causes the output signal to be positive with respect to the common.

Whereas, the DSCL23 is loop-powered through its output terminals. That puts the 4-20mA receiver (the load) in series with the power supply. So when you measure the voltage from the power supply common (- terminal) to the other side of the load you will see a negative signal. The module could be made usable if the power supply has a fully floating output and you can make terminal 1 (the return current terminal) the common and measure the positive signal across the load from the power supply (-) to terminal 1 (the return current terminal), the common.

A better match for your application is the DSCA42-01C. Its internal electronics is powered by an overall power supply and then the module output circuitry provides the output current whose return side (or negative side) can be connected to the power supply common. This causes the output signal to be positive with respect to the common.

Keywords/Phrases: 4-20mA isolator with loop power, 2-wire transmitter interface signal conditioner with loop power

Due to resource constraints on my computer, I'm unable to open the three dimensional CAD models provided on your website. Does Dataforth provide two demensional CAD models for download as well?

Two dimensional CAD models can be generated upon customer request. Please contact Customer Service for assistance.

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