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Dataforth Corporation, Tucson, Arizona, offers a full family of DIN rail mounted DSCA45 frequency-to-voltage and frequency-to-current modules. These modules provide a simple, low cost method for interfacing magnetic-pickups and tachometers from flow meters, engine test stands, rotating equipment, and other pulse or zero-crossing signals to data acquisition and control systems for the plant, process, or laboratory.

Download the DSCA45 Frequency Input Signal Conditioners Datasheet.

Each DSCA45 frequency input module accepts a single channel of pulse or frequency input, which is isolated and converted to a standard analog voltage or current output. The modules will accept TTL-level or zero-crossing signals in various ranges from 0-500Hz to 0-100kHz and convert them to proportional 0 to +10V, 0 to 20mA, or 4 to 20mA output signals. Input levels can range from 60mVp-p to 350Vp-p, and input hysteresis is provided for each signal type. An excitation source of +5.1VDC at 8mA maximum is available for use with magnetic pick-up or contact-closure type sensors. Current output models have a built-in dedicated isolated loop supply, which provides an active output signal.

Outputs are isolated to 1500Vrms continuous from field side transients and surges, which might otherwise degrade signal integrity and damage expensive computer side equipment. The isolation barrier also eliminates troublesome ground loops. Special input circuits provide protection against accidental connection of power-line voltages up to 240VAC and against transient events as defined by ANSI/IEEE C37.90.1-1989. 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 with pluggable terminal blocks, which allow ease of system assembly and reconfiguration.

FEATURES:

• Accepts Frequency Inputs of 0 to 100kHz
• Industry Standard Output of Either 0-10V, 0-20mA, or 4-20mA
• ±0.05% Factory Calibrated Accuracy
• Adjustable Zero (±5%) and Span (±5%)
• 1500Vrms Transformer Isolation
• Input Overload Protection to 240VAC Continuous
• ANSI/IEEE C37.90.1 Transient Protection
• Mounts on Standard DIN Rail
• C-UL-US Listed
• CE and ATEX Compliant

Specified accuracy for the DSCA45 is ±0.05% of span, including nonlinearity, hysteresis, and repeatability. The modules have excellent stability over time and do not require recalibration. However, both zero and span settings can be adjusted ±5% from two easily accessible potentiometers on the front of the module. The adjustments are non-interactive for ease of use. Special built-in filters reduce common mode 50Hz and 60Hz noise by 120dB.

The modules will accept wide range power from 19VDC to 29VDC with current requirements between 60mA and 80mA, depending on whether the module is a voltage or current output type. A LED indicator on the front panel is lit when power is connected.

Rated operating temperature range is -40°C to +80°C, and the relative humidity range is zero to 95% noncondensing. All modules meet the requirements of EN50081-1 (radiated/conducted emissions) and EN50082-1 (ESD/RF/EFT immunity). Case dimensions are 2.95" x 0.89" x 4.13" (75mm x 22.5mm x 105mm). The modules can be mounted on standard DIN EN50022-35x7.5 or -35x15 rails.

For additional information, call 800-444-7644 toll-free, email sales@dataforth.com, or visit our website at www.dataforth.com.

About Dataforth Corporation:

Dataforth was established in 1984 and is the world leader in data acquisition, signal conditioning and data communication products for industrial applications. Worldwide, our electronic data acquisition, signal conditioning, and data communication products provide rugged signal and data integrity and wide spectrum accuracy. All Dataforth products are manufactured in the USA and have been RoHS Compliant since 2006. The Dataforth Quality Management System is ISO9001:2008 registered.

For additional information, call 800-444-7644 toll-free, email sales@dataforth.com, or visit our website at www.dataforth.com.