schneiderInstruction MI 021-390 February 2016 I/A Series® Magnetic Flow Transmitter Model IMT25 Operation, Configuration, and Calibration

1. Introduction

Description

An I/A Series Magnetic Flowmeter System consists of two major components: 

 IMT25 Magnetic Flow Transmitter with Version 2 Software

 Magnetic Flowtube

 8000A wafer body

 2800, 8300, 9100A, 9200A, or 9300A flanged body

A system may be specified with the transmitter integrally mounted with the flowtube or with a 

remote mounted transmitter, which can be mounted either on a pipe or a flat surface.

Your transmitter has one of three communication protocols.

One is a FoxCom communications protocol. The digital output signal in this version is used 

for flowmeters serving as a primary measuring device in an I/A Series system. You can 

communicate with this version via the I/A Series system, the PC-based Configurator, or the 

optional local keypad/display.

Another has HART communications capability. You can communicate with this version via a 

HART Communicator, PC-Based Configurator, or the optional local keypad/display. 

The third has FOUNDATION fieldbus communication capability. You can communicate with 

this version via a fieldbus host or the optional local keypad/display.

This document describes local operation, configuration, and calibration of an IMT25 Transmitter 

supplied with local keypad and display. For information on operation, configuration, and 

calibration from a PC-Based Configurator, a HART Communicator, or a FOUNDATION fieldbus 

host refer to the documents listed in “Reference Documents” on page 13.

Intended Audience

This document is intended for use by process operators, engineers, and instrument technicians. If 

you are interested only in operation, read the general information in the Introduction and the 

chapter titled Operation. If you are interested in calibration, read the Introduction and chapters 

titled Operation and Calibration. If you are concerned with configuration, read the entire manual, 

with special emphasis on the chapter titles Configuration and the structure diagrams in 

Appendix A and the configuration worksheets in Appendix B.

Functions

Using the IMT25 front panel keypad/display, the functions you can perform are:

Operating Functions

 Display Measurement Information: The current value of the flow rate in engineering 

units (EGU), flow rate in percent of upper range value (URV), the Forward Total, 

Reverse Total, Net Total, and Grand Total.

 Display the Status of the Transmitter: The current operating mode, Analog and Pulse 

Output values, Contact Input settings, Relay Output settings, noise reduction, 

AutoZeroLock information, and write protection as well as alarm and diagnostic 

status.

 Display Identity Information: Tag, description, and message plus identification data 

for the flowmeter, flowtube, and transmitter software.

 Acknowledge Alarms and Diagnostic Conditions.

 Reset Totals.

Calibration Functions

NOTE

These functions can be passcode protected from keypad changes.

 Adjust the 4 and 20 mA output signal (requires additional equipment)

 Preset outputs to calibrate control loop

 Calibrate the AutoZeroLock Detector

Configuration Functions

NOTE

These functions can be passcode protected from keypad changes.

 Display and modify all configuration parameters

 Assign passcodes and set levels of privilege

Reference Documents

This document addresses operation, configuration, and calibration using the local keypad/display 

panel. For remote communication with your transmitter and other details of the flowmeter, refer 

to the applicable documents listed in Table 1

2. Quick Start

FoxCom or HART Protocol

Your IMT25 Transmitter can be configured with a PC-Based Configurator or with the 

keypad/display option. With the keypad/display, two configuration menus exist, Quick Start and 

Setup. Most basic applications can be configured in Quick Start mode.

Quick Start mode can be used for applications requiring only:

 A 4-20 mA output based on a flow rate in (US) GPM

 The transmitter display to show a flow rate in (US) GPM

 A FoxCom digital or HART flow rate signal.

Use Setup mode that is fully described in “Configuration” on page 39, for applications involving:

 Transmitters powered from 50 Hz sources

 Pulse and frequency outputs

 Totalizer functions

 Flow units other than (US) GPM

 Alarm functions

 Multi-range or bi-directional flow configurations.

To make Quick Start changes to the configuration, go to 1 TOP LEVEL/Quick Start by 

pressing the Left arrow repeatedly until the display reads 1 TOP LEVEL. Then use the up/down 

arrow keys to go to 1 TOP LEVEL/Quick Start. The procedure to change your configuration is 

demonstrated by the following example: 

 Flowmeter factor of 18.22 (refer to “Determining the Meter Factor” on page 18)

 Forward direction of flow

 Flow Range 0 to 150 GPM

1. Use the Right arrow key to move to MFACTOR FORMAT? {###.######}. This format 

can be changed, if necessary, to accommodate the meter factor.

a. If no change is required, press the Right arrow key.

b. To change the format, press Shift + Change to enter Edit Mode. Then use the 

up/down arrow keys to step through the choices. When you reach the format you