Emerson Rosemount 326T Bedienungsanleitung

Quick Start Guide

00825-0100-4328, Rev 01

January 2019

Rosemount™ 326T Temperature Transmitter

Contents

Chapter 1 Introduction.................................................................................................................. 5

1.1 Functions and features..................................................................................................................... 5

Chapter 2 Installation.....................................................................................................................7

2.1 Mounting the transmitter.................................................................................................................7

2.2 Connect the transmitter................................................................................................................... 7

Chapter 3 Operation...................................................................................................................... 9

3.1 Display elements.............................................................................................................................. 9

3.2 Parameter settings........................................................................................................................... 9

3.3 Adjustable parameters................................................................................................................... 10

3.4 Operating modes........................................................................................................................... 10

Chapter 4 Temperature resistance............................................................................................... 11

Chapter 5 Product certifications...................................................................................................13

5.1 European directive information...................................................................................................... 13

5.2 Ordinary location information........................................................................................................ 13

5.3 3-A® certification............................................................................................................................13

5.4 Other industry certifications...........................................................................................................13

Chapter 6 Factory settings........................................................................................................... 15

Quick Start Guide Contents

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Quick Start Guide 3

Contents Quick Start Guide

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4 Quick Start Guide

1 Introduction

The Rosemount 326T Temperature Transmitter detects media temperature and converts

it into an analog output signal (4 - 20 mA).

1.1 Functions and features

The temperature transmitter converts the measured signal into a temperature-

proportional analog signal. Depending on the parameter setting, the output signal is:

•4-20 mA with setting OU = I

•20-4 mA with setting OU = Ineg

The temperature transmitter can scale the analog signal to accommodate the application.

For more technical data, see the Rosemount™ 326T Temperature Transmitter Product

Data Sheet or Emerson.com/Rosemount.

Maximum measuring range when OU = I Measuring range scaled when OU = I

•MAW = initial value of the measuring range

•MEW = final value of the measuring range

•ASP = analog start point

•AEP = analog end point

Note

The minimum difference between ASP and AEP is 9 °F (5 °C).

If the temperature is within the measuring range, the output signal is between 4-20 mA. If

the temperature is outside the measuring range, the output signal is between these

ranges:

Temperature condition Output signal when OU = I Output signal when OU = Ineg

Temperature > AEP 20-20.6 mA 4-3.7 mA

Temperature > MEW 20.6 mA 3.7 mA

Temperature < ASP 4-3.7 mA 20-20.6 mA

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Temperature condition Output signal when OU = I Output signal when OU = Ineg

Temperature < MAW 3.7 mA 20.6 mA

Note

In a fault condition, the output signal reacts according to the FOU parameter.

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6 Quick Start Guide

2 Installation

This section provides instructions for mounting and connecting the temperature

transmitter.

2.1 Mounting the transmitter

Follow these instructions to mount the temperature transmitter.

Note

If installing in a 3-A compliant environment, follow 3-A standards for installation.

Procedure

1. Position the transmitter to the desired orientation.

2. Install the clamp following recommended torque values provided by the clamp

manufacturer.

2.2 Connect the transmitter

Follow these instructions to connect the temperature transmitter for two-wire or four-wire

operations.

CAUTION

•A certified electrician must wire the temperature transmitter.

•Adhere to national and international regulations when wiring the temperature

transmitter.

Voltage supply to EN 50178, SELV, PELV / "supply class 2" to cULus.

Procedure

1. Disconnect power from the temperature transmitter.

2. Connect the temperature transmitter according to these wiring diagrams.

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Quick Start Guide 7

Figure 2-1: Two-wire operation

Pin 1 L+

Pin 2 Analog signal for temperature

Figure 2-2: Four-wire operation

Pin 1 L+

Pin 2 Analog signal for temperature

Pin 3 L-

Pin 4 IO-Link

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8 Quick Start Guide

3 Operation

This section provides information for using the temperature transmitter.

3.1 Display elements

The front of the temperature transmitter includes an alphanumeric display and LED

indicators.

A. Current temperature in °C

B. Current temperature in °F

C. Seven-segment LED display (4 digits)

3.2 Parameter settings

Use an IO-Link capable tool to read current process values and modify parameter values.

3.2.1 General information

The temperature transmitter uses an IO-Link communication interface that requires an IO-

Link master for operation.

IO-Link enables direct access to process and diagnostic data and allows the setting of

parameter values.

3.2.2 IO-Link information

The IODDs necessary for configuring the IO-Link device, detailed information about

process data structure, diagnostic information, parameter addresses and the necessary

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Quick Start Guide 9

information about the required IO-Link hardware and software are available at

Emerson.com/Rosemount

3.3 Adjustable parameters

Use IO-Link software to configure these parameters.

Parameter Description

OU2 Output function: analog signal is 4-20 mA (I) or 20-4 mA (Ineg)

ASP2 Analog start point for the measured temperature value.

AEP2 Analog end point for the measured temperature value. The minimum

difference between ASP2 and AEP2 is 9 °F (5 °C).

COF Zero point calibration. Offsets the zero point ± 18 °F in steps of .18 °F (±

10 °C in steps of 0.1 °C).

FOU2 Behavior of the output after a fault.

•ON: the analog signal is driven to 21.1 mA.

•OFF: the analog signal is driven to 3.5 mA.

Uni Sets the temperature unit in °F or °C.

Update rate of display The rate at which the transmitter updates the displayed temperature

measurement.

•d1: 50 ms

•d2: 200 ms

•d3: 600 ms

Orientation of display rd: rotates the display by 180°.

3.4 Operating modes

The temperature transmitter uses different operating modes depending on the measured

temperature.

After turning on the temperature transmitter the temperature transmitter displays the

current measured temperature and the analog output provides a signal proportional to

the measured temperature.

If the temperature is outside of the measuring range the temperature transmitter displays

OL or UL.

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10 Quick Start Guide

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