Kurz MFT-B Series User manual

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Operation
This section of the manual describes the basic operation of the unit. Configuration of the
parameters such as duct area, analog output range, correction factors, meter
identification or tags, etc. are covered elsewhere.
When the unit powers ON, various start up screens display the progress of the meter's
start up initialization before finally displaying the Run Mode display. The default Run
Mode display will show the meter's Tag Name and the Flow. The Run Mode display can
be configured to display other meter variables (see section below).
If the cover is removed, as shown in the picture, the optional keypad is accessible to
view/change the flow meter’s parameters. The Keypad/LCD are shown here with the
flow body on the bottom and power/signal conduit ports on the top left and right. The
display will mount on any 90 °angle within the enclosure. Local user input is done by
pressing the center of the keys on the membrane keypad. Kurz Instruments,
recommends using a pencil eraser. The P, D, L, E, and Hkeys provide the primary
navigation functions of the onboard menu system. The following sections describe this
in more detail.
Figure B-1. Optional Keypad/LCD.

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Power-On Sequence
For units with the optional LCD display, the following screens will be displayed during
Power On:
1. The LCD green back light will turn on
2. The screen will momentarily display
KURZ INSTRUMENTS
DISP DRIVER V4.X
3. It will clear, then show:
FIRMWARE VERSION
MFT-B VER 2.XX
If the meter supports HART communication the Power Up screen will show:
FIRMWARE VERSION
MFT-B VER H2.XX
4. The Run Mode screen will be displayed
The analog output becomes active as soon as Run Mode is reached which takes about
20 seconds for the whole boot process under flow. For a full description of this and flow
rate dependent boot times see this section. The parameters to configure or setup the
mass flow transmitter are accessible via the keypad and 2x16 LCD. The next section
provides a general overview to navigate the menu system using the 20-key keypad and
the 2x16 character LCD display.
Overview of the User Interface
The Kurz Instruments MFT-B series flow meter has a 2 line, 16 character LCD display
and a 20-key keypad through which the user can interface with the onboard menu
system. The primary keys on the keypad used to navigate the menu system are the P,
D, L, E, and Hkeys. The remaining keys are primarily used for data entry.
There are five operational modes for the flow meter. They are:
Run Mode

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Program Mode accessed using the (P) key
Display Mode accessed using the (D) key
Log Mode accessed using the (L) key
Extended Utilities Mode accessed using the (E) key
Run Mode is the normal operational state of the meter. After boot up or power on, the
flow meter will be in Run Mode and will show the Run Mode display(s). The factory
default Run Mode display will show the meter's Tag Name and Flow as follows:
TAG NATURAL GAS1
FLOW 14356. SCFM
The Run Mode display can be configured to display other meter variables and formats.
The Run Mode display setup is covered in a later section of the manual.
Program Mode is the mode used to change (or program) the flow meter parameters or
setup the flow meter features. An access code is required to enter this mode. Program
Mode is invoked by pressing Pwhen the flow meter is in Run Mode.
Display Mode is the mode used to view the flow meter parameters as well as the process
and control data. No access code is required to enter this mode. This mode is for
viewing only and data entry is blocked. Display Mode is invoked by pressing Dwhen the
flow meter is in Run Mode.
Log Mode is the mode used to request log reports that are sent to the flow meter USB
port. No access code is required to enter this mode. Log Mode is invoked by pressing L
when the flow meter is in Run Mode.
Extended Utilities Mode is the mode used to perform various diagnostic and utility
functions. An access code is required to enter this mode. Extended Utilities Mode is
invoked by pressing Ewhen the flow meter is in Run Mode.
The Hkey provides a quick exit or ‘HOME’ function and will either return to the top-level
option entry display of the user mode or return to Run Mode.
The general format of the data displays will have the item description or name of the
variable on line 1 of the LCD display and the value of the variable on line 2 of the
display. In general, data entry will be performed on the value on line 2 of the display.
When the data item is a selection list, an up/down arrow ‘^v’ symbol will display at the
right most position on line 2 to indicate that the data value is selected using the up (^) or
down (v) arrow keys on the keypad. In general, when the data item has associated
engineering units, the units string will be at the right most position on line 2.

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Navigating the Menus
The primary navigation keys are as follows:
Keypad Key
Function
H
Quick Exit (HOME) to return to Run Mode;
Or back out of a menu
P
Invokes Program Mode from Run Mode;
Or skip over data with no entry, during data entry
D
Invokes Display Mode from Run Mode;
Or delete 1 character to the left, during data entry
L
Invokes Log Mode from Run Mode
E
Invokes Extended Utilities Mode from Run Mode;
Or accept a data entry, during data entry
All of the user modes – Program Mode, Display Mode, Log Mode, and Extended Utilities
Mode are accessed directly from Run Mode by pressing its corresponding key on the
keypad. Depending on the user mode invoked, the user will be prompted to enter an
access code.
ENTER ACCESS
CODE:
An access code is entered using the numeric keys on the keypad and pressing Eto
accept the entry. The access code is a number with up to 6 digits. If an invalid access
code is entered, the menu system will respond accordingly and will repeat the prompt for
an access code until a valid code is entered or the user presses Hto return to Run
Mode.
INVALID
CODE
All of the user modes have consistent navigation screens and input. When the user
mode is first invoked, the menu system prompts for a Navigation Method.
1: MENU SCROLL
2: QUICK JUMP
Menu Scroll allows the user to select a menu by scrolling through the list of available
menus. The 1key is pressed to use the Menu Scroll Navigation Method. Quick Jump
allows the user to enter an option number associated with the menu desired. The 2key

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is pressed to use the Quick Jump Navigation Method.
The following is an example of the (Menu) Option Entry screens for Display Mode.
DISP MODE OPTION
>1 METER SETUP ^v
Menu Scroll Navigation Method
The scroll keys are used to navigate through the list of menu options. When the desired
option is found the Ekey is pressed to invoke the menu option to view/change the menu
items in that menu.
Enter DSP Option
1-50>1
Quick Jump Navigation Method
For the advanced user who is familiar with the Option #’s associated with the menu
options, the Quick Jump navigation allows the user the enter the option # using the
numeric keys and press Eto quickly invoke the menu option.
The following Tables list the menu options available in the four user modes. Tables with
more details, including the menu items within each menu are provided in the Appendix.
PROGRAM MODE MENU OPTIONS
Option
#
Menu
1
Basic Meter Setup
(1 BASIC SETUP)
2
Flow Cutoff
(2 FLOW CUTOFF)
3
Flow Correction Factor and Time Constant
(3 FLOW CF/TC)
4
Setup Flow Totalizer Reset
(4 RESET TOTAL)
5
Setup Analog Output #1
(5 AOUT 1)
6
Setup Analog Output #2
(6 AOUT 2)
7
Setup Run Mode Display
(7 RUN DISP)
8
Setup Relay Output
(8 ASSIGN DOUT)
9
Setup Alarm
(9 ALARM SETUP)
10 Setup NE-43 Alarm

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(10 NE-43 ALRM)
11 Setup Pulse Output
(11 PULSE OUT)
12
Setup Sensor Purge
(12 PURGE OUT)
13
Setup Flow Calibration Parameters
(13 CALIB DATA)
14
Calibrate Outputs
(14 CALIB AOUT)
15
Variable Flow Correction Data
(15 VRMS DATA)
16
Remote Correction Factor Data
(16 REMOTE CF)
17
Select Gas Calibration Curve
(17 CAL CURVE)
18
Setup Data Logging
(18 DATA LOG)
19
Setup Modbus Communication
(19 MODBUS COM)
20
Setup External Input
(20 EXT AINPUT)
21
Setup PID Data
(21 PID SETUP)
22
Manual PID Adjust
(22 PID CONTRL)
23
Setup Drift Check
(23 DRIFT CHCK)
24
Change User Password
(24 CHNG PWORD)
25
Update FROM EEPROM
(25 GET EEPROM)
26
Set Bootup Output Delay
(26 BOOTUP DLY)
The BOLDED entry in the menu description column is the Scroll List entry for the menu
option. The Option number is included in the Scroll List entry to familiarize the new user
with the Option numbers associated with often used Menus. This format is used for all
the user mode Scroll List menu options.
DISPLAY MODE MENU OPTIONS
Option
#
Menu
1
Setup Meter
(1 METER SETUP)
2
Flow Cutoff
(2 FLOW CUTOFF)
3
Flow Correction Factor and Time Constant
(3 FLOW CF/TC)
4
Setup Flow Totalizer Reset
(4 RESET TOTAL)
5
Setup Analog Output #1

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(5 AOUT 1)
6 Setup Analog Output #2
(6 AOUT 2)
7
Setup Run Mode Display
(7 EXEC DISP)
8
Setup Relay Output
(8 ASSIGN DOUT)
9
Setup Alarm
(9 ALARM SETUP)
10
Setup NE-43 Alarm
(10 NE-43 ALRM)
11
Setup Pulse Output
(11 PULSE OUT)
12
Setup Sensor Purge
(12 PURGE OUT)
13
Setup Flow Calibration Parameters
(13 CALIB DATA)
14
Calibrate Outputs
(14 CALIB AOUT)
15
Variable Flow Correction Data
(15 VRMS DATA)
16
Remote Correction Factor Data
(16 REMOTE CF)
17
Select Gas Calibration Curve
(17 CAL CURVE)
18
Setup Data Logging
(18 DATA LOG)
19
Setup Modbus Communication
(19 MODBUS COM)
20
Setup External Input
(20 EXT AINPUT)
21
Setup PID Data
(21 PID SETUP)
22
Manual PID Adjust
(22 PID CONTRL)
23
Setup Drift Check
(23 DRIFT CHCK)
24 Change User Password
(24 CHNG PWORD)
25 Update FROM EEPROM
(25 GET EEPROM)
26 Set Bootup Output Delay
(26 BOOTUP DLY)
27-30 <Not Used>
31
Factory Meter Setup
(31 METR CONFG)
32
Factory Sensor Setup
(32 SENS CONFG)
33
Calibration Coefficients
(33 INCAL CONF)
34
Setup Manufacturing Data
(34 PROD CONFG)

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35 Save TO EEPROM
(35 SAV 2 EEPR)
36 Bridge PID Coefficients
(36 BRIDGE PID)
37 Disable AutoSave
(37 AUTO SAVE)
38 Disable Terminal Home
(38 CURSR HOME)
39
Extended Factory Setup
(39 SETFACTORY)
40
Set Analog Output Cal Coefficient
(40 AO CALCOEF)
The first 26 options in Display Mode are identical to the options in Program Mode. In
Display Mode, the menu items can only be viewed and not changed.
LOG MODE MENU OPTIONS
Option
# Menu
1
Event Log
(1 EVENT)
2
Min/Max Data
(2 MIN/MAX)
3 Trend Log
(3 TREND)
4
System Configuration
(4 CONFIG)
5
System Monitored Data
(5 RUN DATA)
EXTENDED UTILITIES MODE MENU OPTIONS
Option
# Menu
1
Drift Check at Zero
(1 ZERO DRIFT)
2
Drift Check at Mid-span
(2 MIDSP DRFT)
3
Drift Check at Full-span
(3 FULLSP DRFT)
4 Drift Check Cycle (all tests)
(4 CYCLE DRIFT)
5
Reset Flow Total
(5 RESET TOTAL)
When a menu is selected, the Hkey is used to back out of the menu and return to the
top level Option Entry screen. Pressing the Hkey a second time will exit out of the user
mode and return the system to Run Mode.

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Auto Exit
The flow meter has a built in Auto Exit timer that will return the meter to Run Mode from
any of the user modes if there has been no user input for more than 3 minutes. If the
user placed the meter in Program Mode and made changes and didn’t return the meter
to Run Mode, the meter will save the changes to EEPROM before returning to Run Mode
after 3 minutes of no user activity.
Entering Data
Data is entered using the numeric (0-9), minus (-) and decimal (.) keys for floating point
or integer parameters. After the value is entered, the Ekey is pressed to accept the
entry. When entering data, the Dkey will clear one character to the left, similar to the
backspace key on a computer keyboard. The Ckey will clear the entire value and restart
the entry of the value at the first digit.
For parameters with a selection list, the up arrow (^)and down arrow (v) keys are used
to scroll the list to the desired value. When the desired list value is displayed, the Ekey
is pressed to accept the entry.
String/text parameters are entered using the numeric keys similar to entering a text
message on a cellular phone. Alphabetic characters and special characters (eg <,>,%,
etc) are mapped to the numeric keys as follows:
Keypad Key
Character Map
0
0, <sp>, (, ), +, ,, <, >
1
1, /, #, :, $, @, %, &
2
2, A, B, C
3
3, D, E, F
4
4, G, H, I
5
5, J, K, L
6
6, M, N, O
7
7, Q, R, S
8
8, T, U, V
9
9, W, X, Y, Z
The alphabetic and special characters are entered by repeated pressing of the
corresponding numeric key. When the desired character is displayed, the Ekey is
pressed to accept the character and advance the cursor to the right. During text input
mode, a cursor is visible to indicate the current character entry position on the display.
As with numeric entry, the Dkey will clear one character to the left and the Ckey will
clear the entire string and restart text input at the first character of the string.

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For example, the following key sequence is used to enter the Tag Name ‘FT-100’:
Tag Name characters
Key sequence
F
3,3,3,3,E
(E accepts the character and moves the cursor to
the next character position to the right)
T
8,8,E
-
-,E
1
1,E
0
0,E
0
0,E
Accept entry
E
(E is used to accept the entered text string)
All of the above menus may be accessed via the USB port using a terminal emulator
program (such as HyperTerminal or TeraTerm). The display on the terminal emulator
screen will overwrite in place like the LCD does. The function keys on the terminal
emulator are the same as the 4x5 keypad but in lower case. To turn off the echo of the
display characters to the serial ports, press the +key, (shift +). Pressing +key again will
toggle it back on. The unit will respond to only the + and <ESC>xxx commands when
Terminal Echo is off.
Note: The meter Tag Name and other text parameters can be entered as a continuous
string using a remote terminal keyboard (versus single characters followed by the
<ENTER> key) by holding the <SHIFT>key while simultaneously pressing the alpha (A-
Z), numeric (0-9), hyphen (-), or period (.) key.
Run Mode Display
In firmware version 2.0 and above the flow meter’s Run Mode screen is configurable for
both content and style. The configuration is saved in EEPROM and is persistent
between bootup/power cycles of the meter. The Run Mode display setup is performed in
Program Mode by pressing P, the access code (654321) and E. Press 2to invoke the
Quick Jump option entry method and select Option #7, for the Display Setup menu.
The first item in the menu is the Run Mode Display type. The Run Mode screens can be
configured to display as scrolling screens displaying one process variable per screen.
Or the display can be a static screen displaying up to 2 process variables. Use the ^or
vkeys to select between STATIC and SCROLLED and press Eto accept the selection.
RUN MODE DISPLAY
>STATIC ^v

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If STATIC format is selected for the Run Mode Display, the meter will prompt for the
process variables to display
STATIC VARS
>FLOW+TEMP ^v
Use the ^or vkeys to select the desired display option and press Eto accept the
selection. The following display options are available
Display option
Sample display
FLOW ONLY
FLOW 0.0000 SCFM
FLOW+TOT
FLOW 0.0000 SCFM
FLTOT 1.838E+07
FLOW+VEL
FLOW 0.0000 SCFM
VEL 0.00000 SFPM
TAG+FLOW
TAG NAT. GAS
FLOW 0.0000 SCFM
FLOW+TEMP
FLOW 0.0000 SCFM
TEMP 82.003 DEGF
If SCROLLED format is selected for the Run Mode Display, the meter will prompt for the
combinations of process variables to be scrolled
SCROLLED VARS
>SCROLL ALL ^v
Use the ^and vkeys to scroll through the following combinations of process variables
Flow displays on line 1
Line 2 is blank
Flow displays on line 1
Totalized flow displays on line 2
Flow displays on line 1
Velocity displays on line 2
Tag Name displays on line 1
Flow displays on line 2
Flow displays on line 1
Temperature displays on line 2

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and press Eto accept the selection. The SCROLLED VARS list includes the following:
SCROLL ALL, FLOW ONLY, FLOW+TOT, FLOW+VEL, TAG+FLOW,
TAG+FLOW+VEL, FLOW+TOT+VEL, FLOW+TEMP, FLOW+TEMP+VEL
For the Run Mode scrolled format, each screen will display the value of only one process
variable; the description will be on line 1 and the value with units will be on line 2.
Flow
FLOW RATE
0.0000 SCFM
Temp
TEMPERATURE
82.52 DEGF
Velocity
VELOCITY
0.0000 SFPM
Totalized
Flow
TOTAL FLOW
183545.0 SCF
Tag Name
TAG NAME
NAT. GAS24
For scrolled format, the user also defines the scroll interval which must be at least 2
seconds, but can be up to 8 seconds. Use the numeric keys to enter the scroll interval in
seconds and press Eto accept the entry.
SCROLL INTERVAL
>2 SEC
After entering the scroll interval, the meter returns to the Program Mode Option Entry
screen. Note, the Display Setup Menu is also part of the meter’s Quick Setup Menu.

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Flow Meter Time Constant
Different factors are involved with controlling the speed of the MFT B-series.
•Sensor Response Time (see Brochure)
•Meter Filter time constant (see configuration changes section for adjustments)
Depending on the various settings, you can have a response time which is sensor limited
or over damped using the Meter Filter time constant. The net response is the cascade of
all the above. So even if the Meter Filter is at 0 seconds, the response time will still be
limited by the sensor.
Configuration Data Storage
The configuration data is stored in EEPROM on the MFT B- Series board. All
information about the flow meter is stored in this memory and is persistent between
power cycles of the meter. In addition, the original Factory configuration of the sensor
data and 4-20 mA calibration is stored in the EEPROM of the unit.
When making changes in Program Mode the changes are automatically saved to
EEPROM memory when the user exits from Program Mode.
Configuration, Upload/Download using Xmodem
The upload/download process allows the user to save the factory and field customized
configuration data to a remote file on a PC. This is done one of two ways, by using the
upload ascii command or using the Kurz Instruments program KZCOMM which ships
with all meters. See the KZCOMM documentation for instructions on how to use the
program to transfer configuration files. The configuration file will transfer as a binary file
of about 4 kbytes in 5 seconds at 9600 baud. To initiate this using a terminal emulator,
enter the command:
<Esc>upload<Ret>,
where, <Esc> is the escape key on the keyboard followed by the text “upload” and <Ret>
is the enter or return key. A prompt will be displayed to indicate that the Xmodem
receive is ready to start on the PC. Using HyperTerminal, select Transfer, Receive File
and then select the file location and name in which the binary configuration file is to be
stored. If too much time is spent (more than 30 seconds) responding to the Xmodem

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receive prompt the upload command will timeout and will have to be issued again.
To copy this configuration back into a unit or transfer it to another MFT B-Series with the
same configuration file format, use the command:
<Esc>download<Ret>,
where, <Esc> is the escape key on your keyboard followed by the text “download” and
<Ret> is the enter or return key. A prompt will be displayed to indicate that the Xmodem
transmit is ready to start on the PC. Again you have 30 seconds before it times out.
Using HyperTerminal select Transfer, Send File and select the binary configuration file to
be transferred to the MFT B-Series Unit.
The above commands are effective only when the MFT B-Series is in Run Mode. It is
recommended to turn OFF the terminal echo during this process to avoid dumping
character strings on the terminal screen. Refer to the section Overview of the user
Interface on how to turn the terminal echo ON and OFF.
Calibration of the Analog Output
A menu is available to perform the calibration of the analog output(s) on MFT series flow
meters. You enter the Analog Output Calibration menu and use an external meter to
“dial in” the 4.0 mA Zero and then the 20.0 mA Span. The ^vkeys are used to raise or
lower the output until it matches the two conditions listed. Once they are in agreement,
the Ekey is pressed to accept this value. See the Configuration section of the manual
for step-by-step instructions.
Calibration of the Analog Input
There are no on board menus for the user to calibrate the analog inputs. This is a
Factory process only. If your transmitter is reading the ambient temperature within a few
degrees when the flow rate is higher than 100 SFPM (0.5 SMPS), then the input is
properly calibrated and your sensor is most likely working also. You can also test the
independent calibrator under the zero-span menu to confirm the accuracy of the
calibration
Status Alarms and NE-43Alarms
The MFT B-Series has two types of alarm mechanisms - status alarms and a NE-43
alarm. The MFT B-Series meters can be factory configured with up to two (2) status

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alarms. The status alarms have several trigger events that the user can configure to
cause an alarm state transition to occur. Trigger events can be when a process variable
(Flow Rate, Velocity, or Temperature) value falls outside configurable limits or when a
Meter Fault Event occurs. The status alarms can be monitored on the LCD display, via
ASCII or Modbus commands or through the HART interface. Additionally, the status
alarms can be setup to energize a relay output when an alarm event occurs. The solid
state relays (SSR) are SPST and open circuit when the meter is unpowered.
The second alarm mechanism is the NE-43 Alarm. Meter failures can be indicated by
the NE-43 Alarm. See the diagnostics section for a full description of the conditions
which will trigger the NE-43 alarm. Normal signals are clipped to stay between 3.8 and
20.5 mA. When the NE-43 alarm is triggered, the 4-20mA output signals saturate low or
high. The user can configure whether the output signals saturate low or high when the
NE-43 alarm is triggered. Figure B-2 shows the NE-43 implementation.
Figure B-2. NE-43 Alarm signaling on the 4-20 mA outputs.