00809-0100-4378, Rev CF
Rosemount™ 751 Field Signal Indicator
Reference Manual
May 2022
Safety messages
NOTICE
Read this manual before working with the product. For personal and system safety, and for optimum product performance,
ensure you thoroughly understand the contents before installing, using, or maintaining this product.
For equipment and service needs, contact your local Emerson representative or go to Emerson.com.
CAUTION
The products described in this document are NOT designed for nuclear-qualified applications. Using non-nuclear qualified
products in applications that require nuclear-qualified hardware or products may cause inaccurate readings. For information on
Rosemount nuclear-qualified products, contact your local Emerson Sales Representative.
For information on Rosemount nuclear-qualified products, contact your local Emerson Sales Representative.
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Reference Manual Contents
00809-0100-4378 May 2022
Contents
Chapter 1 Introduction.............................................................................................................. 5
1.1 Product overview.........................................................................................................................5
1.2 LCD display.................................................................................................................................. 5
1.3 Service support............................................................................................................................6
1.4 Product recycling/disposal...........................................................................................................6
Chapter 2 Installation.................................................................................................................7
2.1 Assembly..................................................................................................................................... 7
2.2 Wiring diagrams.......................................................................................................................... 8
2.3 LCD display configuration.......................................................................................................... 12
Chapter 3 Ordering information, specifications, and drawings................................................. 17
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Contents Reference Manual
May 2022 00809-0100-4378
4 Emerson.com/Rosemount
Reference Manual Introduction
00809-0100-4378 May 2022
1 Introduction
1.1 Product overview
The Rosemount 751 Field Signal Signal Indicators provide a means of displaying important
process variables. These devices operate with any two-wire transmitter that measures
input variables such as pressure, flow, liquid level, or temperature. Rosemount indicators
are ideal for installations where an integral meter would be difficult to view.
Rosemount 751 Indicators are designed for use in industrial environments where allweather performance is necessary. These units are vibration- and corrosion-resistant, and
explosion-proof or intrinsically safe. An LCD display or analog meter may be ordered to
meet specific application requirements.
1.2 LCD display
The LCD display requires an analog 4–20 mA dc output from a two-wire transmitter. It may
be configured from a 4 mA point of –999 to 1000 and a 20 mA point of -999 to 9999. The
sum of the 4 mA point and the span must not exceed 9999. The decimal point can be
placed in any of three positions (X.X.X.X) or not used. Calibration adjustments are made
using noninteractive zero and span buttons. The scaled meter may be labelled with the
appropriate engineering units. A twenty-segment bar graph, on the bottom of the meter
faceplate, represents the 4–20 mA signal directly.
The large 2¼-in. meter face has ½-inch high characters for easy readability as shown in
Figure 1-1. The 4 and 20 mA points may be changed by pressing the buttons on the meter
faceplate. The meter can be rotated in 90-degree increments within the enclosure for
convenient viewing.
Figure 1-1: LCD Display
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Introduction Reference Manual
May 2022 00809-0100-4378
1.3 Service support
To expedite the return process, refer to Emerson.com and contact the nearest Emerson
representative.
CAUTION
Individuals who handle products exposed to a hazardous substance can avoid injury if they
are informed of and understand the hazard. Returned products must include a copy of the
required Safety Data Sheet (SDS) for each substance.
Emerson representatives will explain the additional information and procedures necessary
to return goods exposed to hazardous substances.
1.4 Product recycling/disposal
Consider recycling equipment and packaging. Dispose of the product and packaging in
accordance with local and national legislation.
6 Emerson.com/Rosemount
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