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    Watanabe Output Isolator TW-2X

Watanabe TW-2X Two-Output DC Signal Isolator

The Watanabe TW-2X converts one DC voltage or current input into two proportional DC outputs for measurement and control systems.

  • Two outputs for connecting compatible receiving instruments.
  • 24 V DC power supply.
  • Accuracy: ±0.1% of full scale.
  • Response time: 50 ms, from 0 to 90%.
  • Compact construction with integrated wiring terminals.

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Ask Seacom about specifications, availability and the right instrument for your application.

Watanabe TW-2X Two-Output DC Signal Isolator

The Watanabe TW-2X accepts a DC voltage or current signal and provides two proportional DC outputs. It is useful when one measurement signal needs to serve two receiving devices, such as a PLC and a recorder, subject to matching their signal and load requirements.

Powered by 24 V DC, the TW-2X combines the converter and terminal block in a compact unit for instrument-panel installations.

Key Features

  • One DC voltage or current input with two DC outputs.
  • Signal isolation and proportional conversion.
  • Accuracy of ±0.1% of full scale.
  • 50 ms response time from 0 to 90%.
  • Integrated terminal-block construction.

Technical Specifications

SpecificationTW-2X
Input DC voltage or DC current
Output Two outputs; DC voltage/current according to ordering specification
Power supply 24 V DC
Accuracy ±0.1% FS
Response time 50 ms, 0–90%
Dielectric strength 2000 V AC
Dimensions 98 × 48 × 41 mm (H × W × D)
Weight Approximately 130 g
Operating temperature −5 to +50°C
Operating humidity 90% RH or below

FS means full scale. Specify the input range and both output ranges when ordering. Check the applicable load limits and wiring arrangement for the complete model code.

Using One Signal with Two Instruments

A typical arrangement sends one output to the control system and the other to a display or recording device. Both outputs represent the same measured input; this is not a two-input measurement instrument.

ConnectionApplication example
Input DC measurement signal from a compatible transmitter or signal source.
Output 1 Signal to a PLC or controller for process control.
Output 2 Signal to a recorder or indicator for monitoring.

Confirm the required isolation between circuits against the manufacturer’s connection diagram, especially when the receiving devices have different grounding arrangements.

Original Specification Reference — Part 1

Watanabe TW-2X two-output isolator original specification reference part 1

Original Specification Reference — Part 2

Watanabe TW-2X two-output isolator original specification reference part 2

Selection and Ordering

  • Input signal: provide the signal type, minimum and maximum values, and source instrument.
  • Both outputs: identify the signal range and input requirements of each receiving device.
  • Power: confirm that a suitable 24 V DC supply is available.
  • Connections: confirm the required terminal or connector arrangement.
  • Existing installations: include the complete model code and photographs of the label and wiring terminals.

Related Signal Isolators

For applications requiring one output, compare the Watanabe TZ-1XA and TZ-5XA DC signal isolators.

Need Help Selecting a Two-Output Isolator?

Contact Seacom with your input signal, both required outputs and connected equipment. We can help check the configuration for your measurement and control application.

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