ST98

Fluid Components International ST98 User Manual

CHAPTER 3 - OPERATION FLUID COMPONENTS INTL

3. Operation

Alert:

Introduction

The instrument has been configured and calibrated to customer specifications. Each instrument contains distinct operating limits and units of measurement. This chapter will show how to determine and manipulate the configuration of the instrument.

Start Up

Verify the wiring before applying power. Verify the correct power connections have been made to the flow transmitter. If the instrument does not have a display, plug in an FC88 Hand Held Communication unit or other compatible communication device into P1 of the customer connection board.

1. Apply power.

2. When operating power is applied to the instrument the following messages will be displayed:

The flow transmitter contains electrostatic discharge (ESD) sensitive devices. Use standard ESD precautions when handling the flow transmitter. See Chapter 2, Installation for ESD details.

"FCI ST98", "Initialization!", "Heater On!"

3. Wait 5 minutes for the instrument to warm-up and stabilize.

4. The instrument automatically enters the flow metering mode. The instrument's display (if present), and /or the FC88 display will show the normal operation.

Note: If the FC88 does not display the monitored results properly, press [P] to re-configure the FC88 to the

operation of the ST98.

The flow meter displays an output signal that is representative of the calculated current process media flow. If the display does not appear, or is out-of-range for the expected values, turn the power off and proceed to

Chapter 5 -Troubleshooting.

Using an FC88 Communicator

An FC88 is a hand held communicator that is plugged into the flow meter which controls the various functions of the ST98. Plug in the FC88 to P1 of the customer connection board. See Figure 2-4 for details.

This instrument is convenient, compact, and obtains its operating power from the flow transmitter. It provides a keypad for operator input and a display for system output.

Menu Control and Organization

Most entries require at least two key strokes; a letter and the [ENTER] key, or one or more numbers and the [ENTER] key. All user entries begin at the Input Mode?< prompt except when the instrument is in the Main Function Mode (just press the letter and [ENTER] to make an entry).

Doc. No. 06EN003291 Rev. A 3 - 1 Model ST98 Flow Meter

FLUID COMPONENTS INTL CHAPTER 3 - OPERATION

A user entry is indicated by brackets [ ] being placed around the entry. Y/N refers to Yes (Y), save or change parameter or No (N) do not save or change parameter unless otherwise specified.

Backspaces are made using the backspace [BKSP] key. Some entries are case sensitive between numbers and letters. Be sure the SHIFT key is pressed to indicate the

correct case. A square after the prompt caret indicates the FC88 is in lower case. A slightly raised rectangle in the same spot indicates the FC88 is in the upper case.

It is recommended that the FC88 be plugged into the instrument before power is applied. If the FC88 is plugged in while the instrument power is on and the FC88 does not respond, press [ENTER], if there is no response press [P], if there is still no response Press [N].

Note: Some entries require a pass code (942) to continue programming the instrument. The instrument will

prompt the user when this is necessary. Do not change any parameters that require this code unless there is an absolute understanding of the instrument's operation. Incorrect changes can cause an inaccurate or a non-operational instrument. The figures in the "Delta "R" Table would need to be re-input.

The user can not exit some routines unless all entries are completed or the power is recycled. The top level of the menu is shown below. Press the large letter in the Figure 3-1 to activate a command.

Analog Input

Rotate through the 8 analog input channels

Sensor Balance

Balance or rebalance Flow Element

Calibrate Display

Display A/D Delta-R and Ref-R data values

Diagnostic

Check out functional conditions of the unit

Sensor Current Select

Displays 2.0 mA - 1k ohm

K-Factor

K-Factor entered by user.

EEPROM PW = available when needed

EEPROM byte locations - read/ write.

Heater

Toggle heater circuit - OFF/ ON.

Output Current Adjust

Manually set output: 4-20 mA, display output load

Software Reset

N O P

Re-initialize instrument without removing power

Select Sensor Heater Current

HIGH (90 mA) or LOW (75 mA)

Re-configure FC88 Unit

Reset the FC88 hand held to ST98 format

Undefined

Delta-R, Ref-R, CB Temp, -8/+20 V

Display Delta-R, Ref-R resistor values, etc.

Save/Restore USER Save and FACTORY

S T

U V

Calibration data saved and restored

Normal Operating Mode

Display flow rate, temperature, totalized flow

Display Total Flow Time

Total time (min) in T mode since last reset

NAMUR Output Fault Indicator

NAMUR flag, select fault indicator

Serial/Customer Numbers

Enter Serial No. and Customer Order No.

Constants Setup

Setup curve fit, TC parameters, and other data

Calibrate Outputs

Outputs - Heater Current, 4 mA, 20 mA levels.

Min/Max A/D Limits

Set minimum and maximum A/D limits

Figure 3-1. Menu Selections Chart

Model ST98 Flow Meter 3 - 2 Doc. No. 06EN003291 Rev. A

W X

Y Z

Totalizer Mode

Enable totalized flow w/wo temperature

NAMUR Output Fault Indicator

Toggle NAMUR flag(on/off) select fault indicator

Undefined

Flow Units Select

Select flow units (3 English , 3 Metric)

CHAPTER 3 - OPERATION FLUID COMPONENTS INTL

Quick Start Menu (Abbreviated)

The following menu shows how to use the most frequently accessed functions of the instrument. See Figure 3-1 for the complete menu. A complete menu explanation follows this Table.

Table 3-1. Quick Start Menu (Abbreviated Menu, See Chapter 3 For Full Details)

NORMAL

OPERATING

[T]

[Z]

MODE

FLOW UNITS

SELECT

ENGLISH

METRIC

M SMPS(VELOCITY)

N NCMH(VOLUME)

K KG/HR (MASS)

ST98 ABBREVIATED MENU

SEE THE LAST

F SFPS(VELOCITY)

C SCF M(VOL UME)

L LBS/HR (MASS)

SEE THE LAST

- OPERATION -

PAGES OF

CHAPTER 3

FOR DETAILS

- OPERATION -

PAGES OF

CHAPTER 3

FOR DETAILS

[W]

[X]

[V]

[U]

[F]

TOTALIZE

MODE

NAMUR

FAULT

INDICATOR

OUTPUT

MODE

SELECT

DISPLAY

OF TOTAL

FLOW T IME

K-FACTOR

ON/OFF

TOGGLE

INPUT

PASSCODE

OUTPUT: XXX CHANGE IT?<

RESET IT?<

K.F. = 1.0000000

CHANGE IT?<

YES

RESET TO TALIZER

NAMUR FL AG IS

OFF, TURN ON ON, TURN OFF

YES

RESET AT POWER UP

IOUT:22mA CHANGE IT? IOUT: 3.5mA CHANGE IT?

0: 4-20

1: 0-5 2:0-10

ENTER#

TIME = 0.0000000 EXITS COMMAND

INPUT K.F. #

YES

TEMP DISPLAY

ON/OFF TOGGLE

0=22.0mA

1=3.5mA

EXITS COMMAND

YES

EXITS COMMAND

REINITIALIZES

WITHOUT

POWER DOW N

EXITS COMMAND

PRESS [ENTER] AFTER

[N]

SOFTWARE

RESET

EACH MENU SELECTION

RE-CONFIGURE

[P]

Doc. No. 06EN003291 Rev. A 3 - 3 Model ST98 Flow Meter

FC88

RESETS FC88 TO USE W ITH

ST98

EXITS COMMAND

TO ACTIVATE COMMAND

FLUID COMPONENTS INTL CHAPTER 3 - OPERATION

Detailed Menu Description

This section describes the menu of commands. The commands are listed in alphabetical order with no order of priority.

Note: Menu Commands are initiated by pressing the appropriate character key followed by the ENTER key.

COMMAND: A. Analog Input Summary:

Permits the user to display the Analog To Digital (A/D number) of the eight analog input channels. The A/D number has a span of 0-4096 counts which is proportional to 0-4 V at the input to the A/D converter. Channels 0 through 3 receive a signal voltage that has been amplified by a factor of nine. Channels 4 through 7 are not amplified.

These numbers can help a technician determine the cause of a problem with the installation or operation of the flowmeter. FCI recommends making a note of these readings.

Description:

When command [A] [ENTER] is pressed, the instrument will respond by displaying the signal for Channel 0. Continually pressing the [ENTER] key displays the rest of the channels and will rotate back to channel 0 following the Channel 7 selection. This command is useful in trouble shooting incorrectly wired instruments and open flow elements. This is a view only selection, the user has no other input commands.

Channel Signal Name Number

0 ACT_SEN - REF_SEN Raw Delta-R x Gain (»9) Raw flow signal with a gain of 9, used for high flow rate. 1 -8 Volt Supply Monitor Check for -8 Volt Supply limits. 2 Sensed mA Output Load Monitor Used in calculating the output load in ohms. 3 +20 Volt Supply Monitor Check for +20 Volt Supply limits. 4 ACT_SEN - REF_SEN Raw Delta-R Raw flow signal with gain of 1, used for lower flow rate. 5 HTR_SEN - GND Sensed Heater Voltage Check the condition of the heater. 6 Circuit Board Temperature Monitor Check for Circuit Board Temperature limits. 7 REF_SEN - GND_SEN Sensed Ref-R Used to measure the reference sensor for process temp.

Purpose and Symptom

Example:

Pressing [A] [Enter] displays “Ch(0): xxxx”

[Enter] displays “Ch(1): xxxx” [Enter] displays “Ch(2): xxxx” [Enter] displays “Ch(3): xxxx” [Enter] displays “Ch(4): xxxx” [Enter] displays “Ch(5): xxxx” [Enter] displays “Ch(6): xxxx” [Enter] displays “Ch(7): xxxx” [Enter] displays “Ch(0): xxxx”

Note:

Model ST98 Flow Meter 3 - 4 Doc. No. 06EN003291 Rev. A

Pressing [Q] [ENTER] at any time will exit this menu item and display “Input mode ?<”.

CHAPTER 3 - OPERATION FLUID COMPONENTS INTL

COMMAND: B. Sensor Balance Summary:

Permits the instrument's flow element to be balanced or rebalanced. A passcode must be entered. This function has already been performed at the factory. This function should only be performed if there is a new flow element installed or a re-calibration is necessary.

Description:

For the instrument to function properly, the flow element and electronics need to be balanced. Balancing means that at the same temperature, the RTD's in the flow element should be at the same resistance. Due to physical differences in the RTD's, the current needs to be adjusted for one of the RTD's so that they will both have the same voltage. The differential should be as close to zero as possible. A passcode is necessary to enable this command. The instrument will either balance itself or it can be done manually.

Note:

Use M (Manual) command when the circuit board or flow element has been replaced and where the balance value representing the digitized current used for balancing has been written down.

If the Heater was ON prior to sensor balancing, be sure to turn the Heater back ON after the RTD's have been balanced.

Example:

Pressing [B] [ENTER] will display “Enter Code #” Press in the passcode [ENTER]. “Enter temp. #” will be displayed. After the temperature is entered, “Auto or Manual?” and “Enter A or M<” are displayed. Pressing [A] [ENTER] will display “xxx xxxx Balancing”. Then “Balanced!” will appear on line 1 and “Saved! xxx” will appear on line 2. If [M] [ENTER] is pressed instead of [A] [ENTER], the prompt “Enter Balance #” will be displayed. Once the balance value [xxx] is entered, the balanced value entered appears on line 1 and “Saved!” is displayed on line 2. After a couple of seconds "Saved! xxx" will be displayed on line 1 and "Input mode?<" will be displayed on line 2. (Typical Balance values are; 234-237. Factory Balance # is on in the Delta R Table.)

COMMAND: C. Calibrate Display Summary:

Displays A/D Delta-R and Ref-R. Data values are useful for calibration. The instrument is calibrated at the factory. This function does not need to be performed unless the instrument has been repaired or needs to be recalibrated.

Description:

The flow element RTD's need to be interpreted by the electronics as a function of flow-rate. This is done by recording the raw signal A/D values at certain flow points and then curve-fitting the points using an equation to linearize the output at the calibrated flow-rate. This command makes it possible to view both the raw A/D Delta-R value, which is the difference between the Active and Reference RTD, and the Ref-R value, which is for the Reference RTD. This is a view only selection, the user has no other input commands.

Example:

Pressing [C] [ENTER] will display “d= xxxx R= xxxx”. The display is updated continuously.

Note:

Doc. No. 06EN003291 Rev. A 3 - 5 Model ST98 Flow Meter

Pressing [ENTER] at any time will exit this menu and display "Input mode?<"

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Fluid Components International ST98 User Manual

Specifications and Main Features

Frequently Asked Questions

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