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Weschler Instruments is a manufacturer and distributor of electrical and electronic measurement equipment. Customers worldwide use our products in power plants, steel mills, chemical plants, paper mills and other industrial applications that require rugged, reliable and accurate instrumentation.
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UM33A Controller - Yokogawa

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     The Yokogawa UM33A digital indicator with alarms is a 1/8 DIN indicator designed to monitor and display processes such as temperature, pressure, flow rate, and other types of data while providing an alarm when an input signal reaches a preset value.

The Yokogawa UM33A digital indicator has eight alarm outputs and eight screen display points, twice the number of comparable models. A dedicated program eases the task of entering alarm values and other information, eliminating the need to input them using the keys on the front panel of each device. Measurements are shown on the large, easy to ready, 14 segment color LCD. The UM33A includes a scrolling text feature for parameters, user-friendly navigation, programmable function keys, user settable default values, and RS-485 (Modbus/RTU, peer to peer, coordinated, PC-Link) communications.

Main Features

  • 1/8 DIN model
  • Up to 9 alarm outputs (including one Fail)
  • Input correction function (PV bias, polygonalline approximation, polygonal line bias)
  • 24 VDC sensor power supply available
  • Simple operation

Optional suffix codes

/LP 24 V DC loop power supply

/DC Power supply 24 V AC/DC

/CT Coating


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(PDF, 3377KB)

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(PDF, 3190KB)

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(PDF, 2460KB)

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Item #



Case Color

UM33A-000-10 Standard Type None Light Gray
UM33A-010-10 Standard Type 1 additional DO & RS-485 comm Light Gray
UM33A-020-10 Standard Type 1 additional DO Light Gray
UM33A-030-10 Standard Type 6 additional DO's Light Gray
UM33A-000-11 Standard Type None Dark Gray
UM33A-010-11 Standard Type 1 additional DO & RS-485 comm Dark Gray
UM33A-020-11 Standard Type 1 additional DO Dark Gray
UM33A-030-11 Standard Type 6 additional DO's Dark Gray
  Results 1 - 8 of 8 1