New dual-channel voltage input two-wire transmitters reduce costs 25% compared to single-channel units. 

Introduced at ISA 2000, these loop-powered transmitters offer two DC voltage input channels in a single, compact enclosure to save money and consume less panel space for many applications.

Acromag’s new 654T two-wire transmitters feature two independent I/O channels in a single, inch-wide package. They receive DC voltage input signals, provide isolation, and output proportional 4-20mA DC current signals. High-resolution 16-bit Sigma-Delta A/D converters ensure accurate measurements. And with support for universal voltage input ranges and convenient push-button calibration, these transmitters provide a simple solution for a wide variety of isolation and signal conversion tasks. Priced at only $320 ($160 per channel), the 654T is ideal for panel shops and end-users who require a high-density signal conditioner that can accommodate a broad range of instrumentation applications.

Configuration is fast and easy. First, you select the input range for each channel with simple DIP switches. Then, you set your zero/full-scale output values using the noninteractive increase/decrease toggle switches on the front panel to modify the output signal until the desired output value is read on your voltmeter. The switches make it easy to calibrate a normal (proportional) or reverse-acting (inverse) response in seconds. After setting the desired calibration, you can engage the safety lockout feature on the DIP switch to prevent accidental changes and unauthorized tampering.

The 654T provides two independent high-voltage input isolation circuits. Loss of power or a failure on one channel has no effect on the other. The second channel can be used as a built-in spare for reduced downtime should the first channel fail. The spare channel becomes operational by simply moving the wired terminal block over to the vacant channel.

A long list of special features include the following:

• Universal DC voltage input ranges offer flexibility to fit many applications.

• Isolation eliminates ground loops, reduces noise, and blocks transient signals.

• DIP switch-configuration simplifies installation without analog pots, jumpers, or software.

• One-step calibration with increase/decrease toggle switches simplifies field adjustments for
  faster and easier maintenance.

• Configuration lockout safety feature prevents tampering and accidental calibration changes.

• Automatic self-calibration compensates for temperature effects and component aging to deliver maintenance-free operation.

• Reverse-acting output capability enables inverse proportional control signals.

• Dual channel model saves space and reduces equipment costs.

• High-resolution 16-bit Sigma-Delta A/D converters deliver superior accuracy for reliable measurements.

• Built-in transient voltage suppressors protect circuitry from electrical interference.

Acromag, a multimillion dollar international corporation, has been manufacturing and developing measurement and control products for more than 40 years. They offer a complete line of industrial I/O products including process instruments, signal conditioning equipment, data acquisition boards, distributed I/O systems, and communication devices.

For more information about Acromag products, call the Inside Sales Department or Marketing Communications at (248) 624-1541, (800) 881-0268, FAX (248) 624-9234, or write Acromag, Inc. at P.O. Box 437, Wixom, MI 48393-7037 USA. Information is also available on the Acromag web site at http://www.acromag.com.com.

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Data Sheet: HTML, PDF (176 KB)

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September 5, 2000

Contact:
Sales - Inside Sales
(e-mail: sales@acromag.com)
Editorial-Robert Greenfield, Marketing Communications Manager
(e-mail: rgreenfield@acromag.com)