SGM LEKTRA SGM-100F ultrasonic flowmeter User manual

SGM-100F
825B109A
Transit time ultrasonic flowmeter
Features
Display:
2x20 digit alphanumeric
backlighted
Keypad:
4x4
Displayed data: istantaneous flowrate, flow totalizer
Housing:
Aluminium
Mounting:
wall
Input:
5 current loop 4÷20mA
accuracy 0,1%
Output::
Sel. 4÷20m A or 0÷20mA current loop
accuracy 0,1%
Accuracy:
± 1%
Repeatibility:
±0,2÷0,5%
Linearity:
±0,5%
Ciclo minimo di misura:
500ms
Serial port:
RS 232 (optional RS 485)
Programmable frequency output:
12÷9999HZ
Relay output:
for pulse totalizer or alarm
Medium speed:
±32m/s
Working temperature:
-30÷80°C
Instrument humidity:
85% RH (40°C)
Sensor process temperature:
max
0÷150°C
Sensor humidity: non condensing 98% RH (40°C)
Power supply:
230Vac / 24Vdc
Dimensions:
251x192x80mm
Weight:
3,1Kg
General
The SGM-100F is composed by a digital converter and two clamp-on or insertion ultrasonic trasducers.
It is designed to measure the fluid velocity of a liquid inside a closed conduit. The trasducers are a noncontacting, clamp-on type, which provide benefits of non-fouling operation and easy installation.
The DSP digital technology (Digital Signal Processing) ensure a low sensibility of the instrument against
potential transient factors.
applied solutions for the application
SGM-100F - Working principle
0.
Working principle
The SGM-100F utilizes two trasducers which work as ultrasonic transmitters and receivers.
They are clamped on the outside of a closed pipe at a specific distance from each other. They can be mounted in V
position (the sound crosses the pipe twice), in W position (the sound crosses the pipe 4 times) or in Z position
(mounted on opposite sides of the pipe - the sound crosses the pipe once). The selection of the mounting position
depends on pipe and on liquid characteristics.
the SGM-100F operates by alternately transmitting and receiving a frequency modulated burst of sound energy
between the two trasducers and measuring the transit time that takes the sound to travel between them. The
difference in measured transit time is directly and exactly related to the velocity of the liquid inside the pipe (fig.1).
Down stream transducer
flo
Tdow
n
Tup
θ
spacing
Upstream transduc
Fig.1
Fig. 1
V=
MD
∆T
×
sin2θ Tup •Tdown
Where:
0=
M=
D=
Tp=
Tdown=
∆T=
Page 2 of 24
include angle for the flow direction
transit time of the ultrasonic signal
Internal pipe diameter
Transit time in the forward direction
Transit time in the reverse direction
Tup-Tdown
SGM-100F - Features
1
Features
1.1
Mechanical dimensions
1.2
Application
1. water, sewagew with low paticle content and seawater
2. water supply and drainage water
3. power plants, nuclear power plant, thermal and hydropower plants, heat energy, boiler feed water and
energy management system
4. metallurgy and mining application
5. petroleum and chemicals
6. food, beverage and pharmaceutical
7. pulp and paper
8. pipeline leak detection
9. network monitoring system, energy and flow computer management
Page 3 of 24
SGM-100F - Features/Operation
1.3
Product Identification
Every instrument has an 8 digit identification number (ESN) which provides the information of version and
manufacring date. It is displayed on menu M61 and can be employed for instrumentation management.
1.4
Specifications
Item
Specifications
Principle
Low voltage , multipulse
Accuracy
1% or be tte r, re pe atability of 0.5% me asuring pe riod: 500ms
Backlitghte d LC D display shows instantane ous flow and accumulate d flow ,flowrate , time e tc
Ele ctric curre nt output of 4-20 Ma or 0-20mA,impe dance of 0-1KO
pre cision of 0.1%
Main U nit
Output
Ope n C olle ctor (OC T) output: positive /ne gative /ne t flow or inte grating flow
rate pulse signal or instance flow rate fre que ncy signal
Input
Five e le ctric curre nt signals input (te mpe rature , pre ssure , le ve l )
Automatic me mory of a accumulative flow of last 64 days 64 months, 5 ye ars
Trasducers
connection
cable
Max le ngth: 200m Warning: conne ction cable must be place d far from high powe r and
switching cable conne ctions
Ste e l, stainle ss ste e l, cast iron, curre nt pipe , coppe r, PVC , aluminum, glass ste e l
Piping
20mm-6000mm
Installation sugge stions: Upstre am 10D , downstre am 5D , 30D away from the pump
Wate r, se awate r, se wage , oils and othe r liquids capable of ultrasonic wave propagation
Fluids
Te mpe rature
Operating
condition
Umidity
Pow er supply
2
2.1
Operation
Connections
Page 4 of 24
Transmitte r -30~80°C Trasduce rs -40~+150°C
Main unit: 85%RH Transduce r: can work unde r wate r of de pth lowe r than
3m
2w, AC 230V / D C 24V
SGM-100F- Operation
2.2
Power on
Standard power supply of SGM-100F is 230VAC. Please check power supply voltage before connecting the unit.
Once the instrument is switched on, it will run a self diagnostic program. If there’s any anomaly the corresponding
error message will be displayed. Generally, there should be no display of error messages, and the flow meter will go
to the most commonly used Menu Window Number 01 (short for M01) to display the Velocity, Flow Rate, Positive
Totalizer, Signal Strength and Signal Quality, based on the pipe parameters configured last time by the user or by the
initial program.
The operation on the keypad does not interfer with the measurement because there’s the simultaneous processing
technology.
When power is on, the user can see on menu window M01 that it is adjusting the gain of the amplifier. Progress S1,
S2, S3 and S4 will be displayed on the left upper corner of the display and after the adjustment the flowmeter will go
into the normal measurement mode, with “R” displayed on the left upper corner.
If the instrument is running for the first time or it has been installed in a new position, the user needs to enter new
pipe parameters. Any parameter will be recorded permanently into the NVRAM of the SGM-100F, until new
modification.
2.3
Keypad
The SGM-100F keypad has 16+2 keys.
Keys from
to
and
are to enter numbers or menu numbers
Key
is for entering the previous menu window.. It can be also used to increase a numeric value.
Key
is for entering the next menu window.. It can be also used to decrease a numeric value.
Key
is for moving left or to delete the left character.
Key
is for selecting a menu option or for confirm a modification.
Key
is for the direct menu window jump over
2.4
Menu windows
The interface has about 100 different menu windows, numbered from M00 to M99.
There are two methodS to enter menu windows:
(1)Direct entering by pressing
followed by two digit-number keys. For example, to enter M11 menu ( pipe outer
diameter) press in sequence
.
(2)Research by
and
, scrolling the windows numbers. By pressing
the user will display the previous
menu window and by pressing
will display the next one.
There are three different types of menu windows:
(1) for number/value entering, like pipe diameter dimensions
(2) for options selection, like pipe material
(3) for values display, like velocity, flow rate ecc.
For number entering windows press directly the digit-numbers and
to confirm. For example, if the outer diameter
of the pipe is 219.2345, select the menu window M11 and press in sequence:
For selecting and modifying the parameters, press
and select the option by pressing
and
. Press then
to confirm.
For example, if the pipe material is SS316, select menu window M14, press
and select the pipe material by
pressing
or
or by digiting the number showed before the material (in this case 1).
Press then
to confirm the choice.
Page 5 of 24
SGM-100F- Operation
2.4
Menu windows types
M00÷M09
M10÷M29
M30~M38
M40÷M49
M50÷M53
M60÷M78
M82
M90÷M94
M97÷M99
M+0÷M+8
2.5
for values display (flowrate, velocity, date and time, totalizer, battery volatge and estiomated working
time)
for entering pipe parameters
for selecting flow rate unit and totalizer unit
for response time, zero and calibration setup and password modification
for data logger setup
for time-keeper setup, ESN information and alarms
for totalizer data display
for diagnostic
command windows (contact SGM LEKTRA)
additional fucntions, as calculator, and for displaying total working hours, turn-on and turn-off times
and date and time of the single operations.
Parameters setting
In order to achieve a proper measurement, proceed with the configuration of the following parameters:
(1) Pipe outer diameter
(2) Pipe wall thickness
(3) Pipe material. In case of non standard materials (not listed) it’s necessary to enter also the relevant medium
sound speed.
(4) Liner material, if present, and the relevant medium sound speed and thickness
(5) Liquid type. In case on non standard liquid (not listed) it’s necessary to enter also the relevant medium sound
speed.
(6) Trasducers type
(7) Trasducers mounting method
(8) Trasducers mounting distance (showed on menu window M25)
For standard pipe materials and standard liquids refer to the following instructions:
(1) Press
to input the pipe outer diameter and press
to confirm.
(2) Press
to enter menu M12 and input the pipe wall thickness. Press
to confirm.
(3) Press
to enter menu M14 and press
to enter selection mode. Use
or
to select the material
and press
to confirm.
(4) Press
to enter menu M16 and press
to enter selection mode. Use
or
to select the lining
material and press
to confirm.
(5) Press
to enter menu M20 and press
to enter selection mode.Use
or
to select the liquid
and press
to confirm.
(6) Press
to enter menu M23 and press
to enter selection mode. Use
or
to select the
trasducers and press
to confirm.
(7) Press
to enter menu M24 and press
to enter selection mode. Use
or
to select trasducers
mounting method and press
to confirm
(8) Press
to enter menu M24 to install the trasducers on the pipe and then press
to go to menu M01
to check the parameters.
Page 6 of 24
SGM-100F - Installation
3
3.1
Installation
Measuring location
The first step of the installation process is the selection of an optimum place in order to obtain a more accurate
measurement. For this reason it is important to have a basic knowledge of the piping and of its plumbimg system.
An optimum place would be defined as a straight pipe length full of liquid, horizontally or vertically positioned.
Selection principles for an optimum installation:
(1) Install the trasducers on the longer length of the pipe and make sure that the pipe is completely full of liquid.
(2) Make sure that the temperature on the location does not exceed the temperature range of the trasducers. In
general the closer to the room temperature the better.
(3) Take the pipe fouling into consideration. Select a straight length of a relatively newer pipe. If the condition is not
satisfying, consider the fouling thickness as part of the liner for a better result.
(4) Remember that gas fase in the liquids is in the upper part of the pipe. Consequently on horizontal pipe
installations avoid to put the trasducers in the upper part.
3.2.
Trasducers installation
The SGM-100F trasducers are made of piezoelectric crystals, both for transmitting and receiving the ultrasonic
signals through the wall of the liquid piping system. The measurement is realized by measuring the traveling time
difference of the ultrasonic signals. Since the difference is very small, the spacing and the alignment of the
transducers are important factors for the accuracy of the measurement and the performance of the measuring
system.
Page 7 of 24
SGM-100F - Installation
How to proceed with the installation:
(1) Locate an optimum position on the pipe, which has to be in good condition (no rust)
(2) Clean and dust the pipe surface.
(3) Apply adeguate coupler on the spot where the trasducers have to be installed and leave no gap between the
pipe surface and the trasducers.
To avoid gas bubbles (gas fase) inside the upper part of the pipe, the trasducers should be installed horizontally by
the side of the pipe.
3.3
Trasducers spacing
The spacing value shown in menu M25 refers to inner distance between the two trasducers. The actual trasducers
spacing should be as close as possible to the spacing value. (see figures on next page).
3.4
V method installation
It is the most common used method for pipe with inner diameters ranging from 20 to 300 millimeters.
Page 8 of 24
SGM-100F - Installation
3.2.3
Z method installation
It is commonly used when the pipe diameter is between 300 and 500 millimeters.
3.2.4
W method installation
It is usually used on plastic pipes with a diameter from 10 to 100 millimiters.
Page 9 of 24
SGM-100F - Installation
3.2.6 Insert sensor installation
Steps for a correct installation:
1- If the pipe is placed inside the wall, check that there’s sufficient space for the mounting of the insertion
sensor (min. distance between the wall and the pipe = 540mm)
2- Procure a drilling tool
3- Enter pipe parameter (in menu M23 choose option 5. “insertion B sensor” - in menu M24
choose 1. “Z method” - in menu M25 input installation distance)
4- Choose the right position and calculate the distance
5- Install the ball valve
Page 10 of 24
SGM-100F - Installation
6- Drill the pipe
1 sensor
5 tight screw
2 bottom of ball valve
6 connection
3 ball valve
7 cable
4 screw
3 ball valve
7 cable
4 screw
7- Insert the sensor
1 sensor
5 tight screw
2 bottom of ball valve
6 connection
L= A - b
A = sensor length
b = pipe thickness
L= external sensor length
8- Proceed with the electrical connection
Page 11 of 24
SGM-100F - Installation
3.2.7
Installation checkup
Through the checkup of the installation, one can: check the receiving signal strength, the signal quality Q value, the
traveling time difference of the signals, the estimated liquid speed, the measured traveling time of the signals and
the calculated traveling time ratio.
3.2.8
Signal strength
Signal strength indicates the amplitude of receiving ultrasonic signals by a 3-digit number. [000] means there is no
signal detected, and [999] refers to the maximum signal strength that can be received.
Although the instrument works well if the signal strength ranges from 500 to 999, stronger signal strength should be
pursued, because a stronger signal means a better result. The following methods are recommended to obtain
stronger signals:
(1) Relocate a more favorable location, if the current location is not good enough for a stable and reliable flow
reading, or if the signal strength is lower than 700.
(2) Try to polish the outer surface of the pipe, and apply more coupler to increase the signal strength.
(3) Adjust the transducers both vertically and horizontally while checking the varying signal strength, stop at the
highest position, and then check the transducers spacing to make sure the transducers spacing is the same
as the M25 shows.
3.2.9
Signal quality (Q)
Signal quality is indicated as the Q value on the instrument. A higher Q value would mean a higher Signal and Noise
Ratio (short for SNR), and accordingly a higher degree of accuracy would be achieved. Under normal pipe condition,
the Q value is in the range of 600-900, the higher the better.
Causes for a lower Q value could be:
(1)
Interference of other instruments and devices such as a powerful transverter working nearby. Try to
relocate the flow meter to a new place where the interference can be reduced.
(2)
Bad sonic coupling for the transducers with the pipe. Try to apply more coupler or clean the surface etc
(3)
Pipes are difficult to be measured. Relocation is recommended.
3.3.0
Total transit time and Delta Time
The numbers displayed on menu window M93 are called total transit time and delta time respectively. They are the
primitive data for the instrument to calculate the flow rate inside the pipe. So the flow rate indication will vary
accordingly with the total time and delta time.
The total transit time should remain stable or vary little.
If the delta time fluctuates higher than 20%, it means there are certain kinds of problems with the transducer
installation.
3.3.1
Time ratio between the Measured Total Transit Time and the Calculated Time
This ratio would be used to check the transducer installation. If the pipe parameters are entered correctly and the
transducers are installed properly, the value for this ratio should be in the range of 100±3. If this range is exceeded,
the user should check:
(1)
If the pipe parameters are correctly entered.
(2)
If the actual spacing of the transducers is right and the same as what the window M25 shows.
(3)
If the transducers are installed properly in the right directions.
(4)
If the mounting location is good and if the pipe has changed shape.
(5)
If there is too much fouling inside the pipe.
Page 12 of 24
SGM-100F - Use
4
Use
4.1 How to check if the instrument works properly
When ‘R’ is displayed in the lowest right corner of LCD display, the instrument is working properly.
If an ‘H’ flashes on that place, there could be poor signal received. Please refer to the chapters on diagnosis.
If an ‘I’ is displayed, it means that there is no signal detected.
If a ‘J’ is displayed, it means that the hardware of this instrument could be out of order. Refer to the chapter on
diagnosis.
4.2 How to check the liquid flow direction
Make sure that the instrument works properly
Check the flow rate for the indication. If the displayed value is POSITIVE, the direction of the flow will be from the RED
transducers to the BLUE transducers; if the displayed value is NEGATIVE, the direction will be from the BLUE transducers
to the RED transducers.
4.3 How to select unit system
Use menu window M30 for the selection of unit system in English or Metric system.
4.4 How to select a required flow rate unit
Use menu window M31 to select the flow unit first and then the timing unit.
4.5. How to use the totalizer multiplier
Use window M33 to select a proper totalizer. Make sure that the totalizer pulse is appropriately speeded. It should
not be too fast and neither too slow. A speed of producing a pulse in several seconds or minutes is preferable.
If the totalizer multiplier is too small, there can be a loss of accumulation pulse because the output device can
output only one pulse in a measurement period (500milliseconds)
If the totalizer multiplier is too large, the output pulse will be too fewer for the devices that are connected with
the instrument for a quicker response.
4.6 How to enable or disable the totalizers
Use M34, M35 and M36 to turn on or turn off the POS, NEG, or NET totalizer respectively.
4.7 How to reset the totalizers
Use M37 to reset the proper totalizer.
4.8 How to restore the flow meter with default setups.
Use M37, when the ‘selection’ message is displayed. Press the dot key first and the message ‘Master Erase’ will
display, then press the backspace key
The master erase step will erase all the parameters entered by the user and setup the instrument with default
values.
4.9 How to use the damper
The damper acts as a filter for a stable reading. If ‘0’ is entered in window M40, that means there is no damping. A
bigger number brings a more stable effect. But bigger damper numbers will prevent the instrument from acting
quickly. Numbers from 0 to 10 are commonly used for the damper value.
4.10 How to use the zero-cutoff function
The number displayed in window M41 is called the low-cutoff value. The flow meter will replace these flow rate
values that are absolutely less than the low-cutoff value with ‘0’. This means the flow meter will avoid any invalid
accumulation when the actual flow is below the zero-cutoff value.
The low-cutoff value does not affect the flow measurement when the actual flow is absolutely greater than the lowcutoff value.
4.11 How to setup a zero point
There exists a ‘Zero Point’ with certain installation which means the flow meter will display a non-zero value when
the flow is absolutely stopped. In this case, setting a zero point with the function in window M42 will bring a more
accurate measurement result.
Make sure that the flow is absolutely stopped, then run the function in window M42 by pressing the ENT key.
Page 13 of 24
SGM-100F - Use
4.12 How to get a range factor for calibration
A range factor is the ratio between the ‘actual flow rate’ and the indicated value by the flow meter.
The range factor can be determined by calibration with flow calibration equipment.
4.13 How to use the operation locker
The system locker provides a means of preventing accidental configuration changes or totalizer resets.
When the system is locked, menu window browsing can be done without affecting any change, but any modifications
are prohibited.
The system can be locked without a password or with a one 1 to 4 digit password. With a no-password locking,
directly press the ENT key when the password input prompt displays.
If the password is forgotten, please contact the factory
4.14 How to use the built-in data logger
The data logger has a space of 24K bytes of memory, which will hold about 2000 lines of data.
Use M50 to turn on the logger and for the selection for the items that is going to be logged.
Use M51 for the times when the logging begins and at how long an interval sustains and how long the data logging
will last.
Use M52 for the direction of logging data. The default setting will permit the logging data to be stored in the logger
buffer.
Logging data can be redirected to the RS-232C interface without being stored into the logger buffer.
Use M53 to view the data in the logger buffer.
Dumping the logging data through the RS-232C interface and the clearing of the buffer can be operated with a
function in window M52.
4.15 How to use the Frequency Output
The frequency output signal, which represents the flow rate, is intended to make connection with other instruments.
The Frequency Output is totally user-configurable. Generally, four parameters should be configured for the setups.
Enter the lower flow rate value in window M68 and the higher flow rate value in window M69.
Enter the frequency range in window M67.
For example, assume that the flow rate varies in a range 0m3/h to 3000m3/h, and an output signal is at a maximum
frequency of 1000Hz, the minimum of 200Hz is going to be required for other instrumentation. The user should enter
0 in M68 and 3000 in M69, and enter 200 and 1000 in window M67.
Please note that the user has to make the selection with OCT setups in window M78 by selecting the 13th option
reading like ‘FO output’ to direct the frequency output to the OCT OUTPUT hardware device.
4.16 How to use the Totalizer Pulse Output
The totalizer output will produce a pulse output with every unit flow of the totalizer.
Refer to point 4.4 and 4.5 for the setups of the totalizer units and multiplier.
The totalizer pulse output can only be realized by mapping the pulse output to the OCT or BUZZER hardware
devices.
For example, assume that the POS totalizer pulse output is needed, and every pulse should represent 0.1cubic
meter of liquid flow; the pulse output will be mapped to the internal Buzzer, so that with every 0.1 cubic meter of flow
the BUZZER will beep for a while.
The following setups should be taken/performed:
Select the unit Cubic Meter under window M32.
Select the Multiplier as ‘2. X0.1’ under window M33.
Select the output option ‘9. POS INT Pulse’ under window M77. (INT stands for totalized )
4.17 How to produce an alarm signal
There are 2 types of hardware alarm signals that are available with this instrument. One is the Buzzer, and the other
is the OCT output.Both for the Buzzer and OCT output the triggering sources of the event include the following:
Page 14 of 24
SGM-100F - Use
(1)
no receiving signal
(2)
poor signal received
(3)
flow meter not in normal measurement mode
(4)
reverse flow
(5)
overflow of the Frequency Output
(6)
flow out of the setted range
There are two out-of-normal-range alarms in this instrument. They are called #1 Alarm and #2 Alarm. The flow range
can be user-configurable through M73, M74, M75, M76.
For example, assume that the Buzzer should start beeping when the flow rate is less than 300 m3/h and greater than
2000m3/h, the following steps for setups would be recommended.
Enter 300 under M73 for #1 alarm low flow rate
Enter 2000 under M74 for #1 alarm high flow rate
Select the item reading like ‘6. Alarm #1’ under M77.
4.18 How to use the built-in Buzzer
The built-in buzzer is user-configurable. It can be used as an alarm. Use M77 for setups.
4.19 How to use the OCT output
The OCT output is user-configurable, which can be performed by selecting the proper input source such as pulse
output.Use M78 for the setups.Please make sure that the Frequency Output shares the OCT.
The OCT output shares pins with the RS-232C interface, and the terminal is at Pin 6 and the ground is at Pin 6.
4.20 How to modify the built-in calendar
Modification will be required only in such cases as when the battery is totally consumed, or when the changing of the
battery takes a long time.
Press the ENT key under M61 for Modification. Use the dot key to skip over these digits that need no modification.
4.21 How to adjust the LCD contrast
Use M70 to the LCD contrast. The adjusted result will be stored in the EEPROM so that the MASTER ERASE will
make no effect on the contrast.
4.22 How to use the RS232 serial interface
Use M62 for the setup of the RS-232C serial interface.
4.23 How to view the Date Totalizers
Use M82 to view the date totalizers that are comprised of a daily totalizer, a monthly totalizer and a yearly totalizer.
4.24 How to use the manual totalizer
Use M28 for the manual totalizer. Press ENT key to start and stop the totalizer.
4.25 How to check the ESN and other minor details
Every set of the series flow meter utilizes a unique ESN to identify the meter. The ESN is an 8-digit number that
provides the information of version and manufacturing date.The user can also employ the ESN for instrumentation
management.The ESN is displayed in window M61.
Other details about the instrument are the total working hours displayed in window M+1, and the total power-on times
displayed in window M+4.
Page 15 of 24
SGM-100F- Menu structure
5
Menu structure
5.1
Menu window details
WARNING!!!! On the menu window from M00 to M09 the display will not show the
menu number on the top left corner!
M00
Displays the positive, negative and net totalizers, signal strenght, signal quality and working status
M01
Displays POS totalizer, flow rate , velocity signal strenght, signal quality and working status
M02
Displays NEG totalizer, flow rate , velocity signal strenght, signal quality and working status
M03
Displays NET totalizer, flow rate , velocity signal strenght, signal quality and working status
M04
Displays date and time, flow rate, signal strenght, signal quality and working status
M05
Desplays date and time, velocity, signal strenght, signal quality and working status
M06
Displays the wave shape of the receiving signal
M07
Displays the battery terminal voltage and its estimated lasting time
M08
Displays all the detailed working status, signal strenght and signal quality
M09
Displays total daily flow, velocity, signal strenght and signal quality
M10
For entering external pipe perimeter
M11
For entering external pipe diameter (from 0 to 6000mm)
M12
For entering pipe wall thickness
M13
For entering pipe internal diameter
M14
Pipe material selection. Standard material (no sound speed needed) are:
(0) carbon steel (1) stainless steel (2) cast iron (3) ductile iron (4) copper
(5) PVC (6) aluminum (7) absestos (8) fiberglass
M15
For entering the sound speed value of the pipe material (non standard materials)
M16
Lining material selection (select “ none” for pipes without lining). Standard materials (no sound speed
needed) are: (1) Tar Epoxy (2) Rubber (3) Mortar (4) Polypropylene (5) Polystryol
(6) Polystyrene (7) Polyester (8) Polyethylene (9) Ebonite (10) Teflon
M17
For entering the sound speed value of the lining material (non standard material)
M18
For entering lining thickness (if any lining present)
M19
For entering the pipe internal wall ABS thickness
Page 16 of 24
SGM-100F - Menu structure
M20
Liquid type selection. Standard liquids are:(0) Water (1) Sea Water (2) Kerosene (3) Gasoline (4) Fuel oil
(5) Crude Oil (6) Propane at -45C (7) Butane at 0C (8)Other liquids (9) Diesel Oil (10)Caster Oil
(11)Peanut Oil (12) #90 Gasoline (13) #93 Gasoline (14) Alcohol (15) Hot water at 125C
M21
For entering the sound speed value of the liquid (non standard liquids)
M22
For entering the viscosity of the liquid (non standard liquids)
M23
Trasducers selection
M24
Trasducers mounting method selection: (0) V-method (1) Z-method (2) N-method (3) W-method
M25
Displays the trasducers mounting spacing
M26
Entry to store the parameter configuration (NVRA)
M27
Entry to load one set of saved parameters
M28
Save last correct values in case of poor signal conditions (select YES or NO - YES is the default setup)
M29
Not used
M30
Unit system selection. Default value is “Metric”. The change to/from English will not affect the totalizers.
M31
Unit of measurement selection. The flow rate can be expressed in: 0. Cubic meter (m3) 1. Liter (lt)
2. USA gallon (gal) 3. Imperial Gallon (igl) 4. Million USA gallon (mg) 5. Cubic feet (cf)
6. USA liquid barrel (bal) 7. Imperial liquid barrel(ib) 8. Oil barr (ob)
The flow unit in terms of time can be per day, per hour, per minute or second. So there are 36 different flow
rate units in total for selection.
M32
Totalizer working unit selection
M33
Totalizer multiplier selection (from 0.001 to 10000)
M34
Enable/disable the differential flow totalizer (NET)
M35
Enabe/disable the direct flow totalizer (POS)
M36
Enable/disable the reverse flow totalizer (NEG)
M37
(1) Totalizer reset (2) Restore default parameter setted by the producer (press
Maste Erase is displayed, press
).
M38
Start/stop the totalizer for calibration
M39
Language selection
M40
Damper setting. Input range from 0 to 999s (default value = 10s)
and after the message
Page 17 of 24
SGM-100F - Menu structure
M41
Low cut-off value setup
M42
Zero point setup (flow stopped)
M43
Clears the zero point set by the user and restore the one set by the producer
M44
Flow “0” setup. Generally this value should be 0.
M45
Scale factor. Default value is ‘1’
M46
Network Identification Number
M47
System locker
M48
Not used
M49
Communication tester
M50
Option selection for the buil-in logger.
M51
Time setup for data logger
M52
Data logging output setup: to RS232 - to buffer - to buffer and buffer clearing
M53
Logger buffer display. It works as a file editor. Use
. to browse the buffer
If the logger is on, the display will automatically refresh once new data are stored.
M54
Not used
M55
Not used
M56
Not used
M57
Not used
M58
Not used
M59
Not used
M60
Calendar. Press
M61
Displays version information and Electronic Serial Number (Electronic Serial Number)
M62
RS232 setup. Baud rate can be from 75 to 115200 bps.
M63
Not used
M64
Not used
M65
Not used
Page 18 of 24
to mofify and use
to skip the digit that need no adjusting
SGM-100F - Menu structure
M66
Not used
M67
Input the frequency range for the frequency output. The highest range is 0Hz-9999Hz. Default value is
1-1001 Hz
M68
Enter a flow rate value that corresponds to lower frequency
M69
Enter a flow rate value that corresponds to higher frequency
M70
LCD disply backlight control. The entered value indicates how many seconds the backlight will be on with
every key pressing.
M71
LCD contrast control
M72
Working timer. It can be cleared by pressing
M73
Enter lower flow rate value that will trigger the #1 alarm.
M74
Enter higher flow rate value that will trigger the #1 alarm
M75
Enter lower flow rate value that will trigger the #2 alarm.
M76
Enter higher flow rate value that will trigger the #2 alarm
M77
Buzzer setup
M78
OCT (Open Collector Transistor Output) setup.
M79
Not used
M80
Not used
M81
Not used
M82
Totalizer date
M83
Not used
M84
Not used
M85
Not used
M86
Not used
M87
Not used
M88
Not used
M89
.
Not used
and then selecting YES.
Page 19 of 24
SGM-100F - Menu structure
M90
M91
Displays signal strenght, signal quality and time ratio on the upper right corner
Displays the Time Ratio between the measured total transit time and the calculated time. If the pipe
parameters are entered correctly and the trasducers are installed properly, the value should be in the range
of 100÷3 %
M92
Displays the estimated fluid sound speed.
M93
Displays total transit time and delta time
M94
Displays the Reynolds number and the pipe factor used by the flow rate program.
M95
Not used
M96
Not used
M97
Records the pipe parameters either in the built-in data logger or in RS232C serial interface
M98
Records the diagnostic information either to in the built-in data logger or in RS232C serial interface
M99
Copies the current display either in the built-in data logger or in RS232C serial interface
M+0
Displays the 64 recorded instrument power-on and power-off date and time with and the relevant flow rate
M+1
Displays the working time of the instrument
M+2
Display the last power-off date and time
M+3
Displays the last power-off flow rate
M+4
Displays the total switch-on times
M+5
Scientific calculator
M+6
Not used
M+7
Not used
M+8
Not used
M+9
Not used
M-0
Hardware adjusting window (only for the producer)
Page 20 of 24
SGM-100F- Troubleshooting
6 Troubleshooting
6.1
Circuit hardware error and solutions
The SGM-100F has a self-diagnosis system which detects hardware problems. The instrument will show “*F” in the
top left corner of the display and it will be necessary to power on again the SGM-100F in order to see the error
message and the solution:
Error message
C au s e
Solutions
Memory C hecking Error
Syste m ROM ille gal or e rror
C ontact the producer
Sored D ata Error
Me mory parame te r data e rror
Press EN T key and restore default
parameters
Sy stem D ata Memory Error
Syste m store d data block e rror
Pow er on again or contact the producer
C ircuit H ardw are Error
Sub-C PU circuit fatal e rror
Pow er on again or contact the producer
Timer Slow /Fast Error
Syste m C lock e rror
Pow er on again or contact the producer
C lock Error
Abnormal clock inside the hardware
C heck the cell and contact the producer
C PU or IR Q Error
--------
Pow er on again
H ost resetting R epeatedly
--------
C ontact the producer
Time or date Error
D ate /Time syste m chip e rror
R eset date and time
N o display
Bad wiring conne ction
C heck w iring connection
Stroke key - N o response
Ke ypad locke d - Bad plug conne ction
Enter the unlock passw ord
table 2
6.2
Operating error codes and solutions
When the instrument detects an operating error, a letter will appear on the top left corner of the dispaly. In menu
window M08 can be displayed the error message. Refer to the following table for the solution:
E rror
co d es
R
M08 display message
C au se
S olution
S yste m Normal
Normal working status
I
S ignal not de te cte d
1) No signal de te cte d
2) Wrong trasduce rs spacing
3) Trasduce rs installe d imprope rly
4) Lining too thick
5) Ne w pipe line r
6) Trasduce rs cable s not prope rly conne cte d
J
Hardware E rror
Hardware de fe ct
C ontact the producer
H
P oorS ig D e te cte d
1) No signal de te cte d
2) Wrong trasduce rs spacing
3) Trasduce rs installe d imprope rly
4) Lining too thick
5) Ne w pipe line r
6) Trasduce rs cable s not prope rly conne cte d
1) Tight the trasducer on the pipe
2) C heck the setted parameters
3) C lean the pipe surface and remove any
rust
4) C hange installing position
5) Wait until the new liner is
6) C heck the cablesWait until the new liner is
dry
E
C urre nt Loop ove r 20mA
1) 4÷20mA curre nt loop ove r 100%
2) Imprope r se ttings to curre nt loop output
C heck the values setted in menu M56 and if
the actual flow is too high
Q
Fre qu OutputOve r
F
Re fe r to table 2
1) E rror in se lf-diagnosis during powe r-on
2) P e rmane nt hardware e rror
G
A djustig gain S 1-S 2-S 3-S 4 (displaye d on
M00, M01,M02 and M03)
F o ur s te p s o f the a d jus ti ng g a i n fo r no rma l
me asure me nt. S op in S 1 or S 2 and only switch
be twe e n S 1 and S 2 indicate a poor wave form
of low signal stre nght
K
E mpty pipe
1) No liquid inside the pipe
2) S e tting e rror in me nu M29
1) Fre que ncy output ove r 120%
2) Imprope r se tting of fre que ncy output or actual
flow too high
1) Tight the trasducer on the pipe
2) C heck the setted parameters
3) C lean the pipe surface and remove any
rust
4) C hange installing position
5) Wait until the new liner is
6) C heck the cablesWait until the new liner is
dry
C heck the values setted in menu M66-M67M68 and M69 and if the actual flow is too
high
1) P ow er on again and follow the i
instructions on table 2
2) C ontact the producer
--------
Once fluid is detected inside the pipe, set 0
in menu M29
table 3
Page 21 of 24
SGM-100F - Troubleshooting
6.3
Other problems and solutions
1) The actual flow inside the pipe is not standstill, but the instrument displays 0.0000 for the flow rate, and ‘R’
displaying signal strength and the signal quality Q (value) has a satisfactory value.
The problem are likely caused by the user who has used the ‘Set Zero’ function on this non-standstill flowing
pipe. To solve this problem, use the ‘Reset Zero’ function on menu window M43.
2) The displayed flow rate is much lower or much higher than the actual flow rate in the pipe under normal working
conditions.
a) There is probably an offset value wrongly entered by the user in M44. Enter ‘0’ in M44.
b) Check the trasducers installation
c) There is a ‘Zero Point’ setted. Try to ‘zero’ the instrument by using M42 and make sure that the flow inside
the pipe should be standstill.
3) The battery cannot work as long as the the time period indicated in menu M07.
a) The battery should be replaced due to the end of the service life
b) Newly changed battery does not fit the battery estimating software
c) The battery has not been fully recharged or the recharge has been stopped too many times
d) The remaining volatge is in the range of 3.70 and 3,90V.
SGM-100F - Communication Protocol
7
Communication Protocol
7. 1 General
The SGM-100F has a standard communication interface and a complete set of communication protocol.
7.2 Interface pin-out definition
Pin
1
2
3
4
5
6
7
8
9
for battery recharge, positive input
RXD
TXD
not used
GND
OCT output
not used
for battery recharge, negative input
RING input for MODEM connection
7.3 The Protocol
The Protocol isa composed by a set of basic commands (string in ASCII format) ending with a carriage return (CR)
and line feed (LF). Commonly used commands are listed below:
Page 22 of 24
SGM-100F - Communication Protocol
Command
Function
DQD(CR)
DQH(CR)
DQM(CR)
DQS(CR)
DV(CR)
DI+(CR)
DI-(CR)
DIN(CR)
DID(CR)
DL(CR)
DT(CR)
M@(CR)***
LCD(CR)
FOdddd(CR)
ESN(CR)
RING(CR)
OK(CR)
GA
GB
GC
DUMP(CR)
DUMP0(CR)
DUMP1(CR)
W
Return flow rate per day
±d.ddddddE±dd(CR) LF *
Return flow rate per hour
±d.ddddddE±dd(CR) LF
Return flow rate per minute
±d.ddddddE±dd(CR) LF
Return flow rate per second
±d.ddddddE±dd(CR) LF
Return flow velocity
±d.ddddddE±dd(CR) LF
Return POS totalizer
±dddddddE±d(CR) LF **
Return NEG totalizer
±dddddddE±d(CR) LF
Return NET totalizer
±dddddddE±d(CR) LF
Return Identification Number
ddddd(CR) LF
Return signal strength and quality
S=ddd,ddd Q=dd (CR)(LF)
Return date and time
yy-mm-dd hh:mm:ss(CR)(LF)
Send a key value as if a key is pressed
Return the current window display
Force the FO output with a frequency in dddd Hz
Return the ESN for the instrument
Dddddddd(CR)(LF)
Handshaking Request by a MODEM
Response from a MODEM
No action
Command for GSM messaging
Please contact factory for detail
Command for GSM messaging
Command for GSM messaging
Return the buffer content
In ASCII string format
Clear the whole buffer
In ASCII string format
Return the whole buffer content
In ASCII string Format, 24KB in length
Prefix before an Identification Number in a network environment. The IDN is a word, ranging
0-65534.
Prefix before an Identification Number in a network environment. The IDN is a single byte value,
ranging 00-255.
Prefix before any command
Command connector to make a longer command by combining up to 6 commands
N
P
&
Data Format
Notes *
CR = Carriage Return e LF= Line Feed.
**
‘d’ = numeric digitT 0-9
*** @ stands for the key value, e.g., 30H for the ‘0’ key.
7.4 Protocol prefix utilisation
7.4.1) Prefix P
The prefix P can be added before any command in the above table to have the returning data followed with two
bytes of CRC check sum, which is the adding sum of the original character string.
Take the DI+(CR) command as an example. Assume that DI+(CR) would return +1234567E+0m3(CR)(LF)( the
string in hexadecimal is 2BH, 31H, 32H, 33H, 34H, 35H, 36H, 37H, 45H, 2BH, 30H, 6DH, 33H, 20H, 0DH, 0AH) ,
then PDI(CR) would return +1234567E+0m3!F7(CR)(LF). ‘!’ acts as the starter of check sum which is yielded by
adding up the string 2BH, 31H, 32H, 33H, 34H, 35H, 36H, 37H, 45H, 2BH, 30H, 6DH, 33H, 20H.
Please note that there will be SPACES (20H) before ‘!’.
7.4.2) Prefix W
The prefix W should be used in the network environment. The usage format is W + digit string which stands for the
IDN + basic command.
The digit string should have a value between 0 and 65534 except 13(0DH), 10 (0AH), 42(2AH,*), 38(26H, &).
For example, if the IDN=12345 instrument is addressed and returning the velocity of that instrument is requested,
the command will be W12345DV(CR).
Page 23 of 24
SGM-100F - Communication Protocol
7.4.3) N Prefix
The prefix N is a single byte IDN network prefix, not recommended in a new design. It is reserved only for the
purpose of the compatibility with the former versions
Command Connector &
The & command connector can connect up to 6 basic commands to form a longer command so that it will make the
programming much easier.
For example, assume that the measurement of an instrument with IDN=4321 are going to be returned, and (then) all
the following 3 values— (1) flow rate (2) velocity (3)POS totalizer—will be returned simultaneously. The combined
command would be W4321DQD&DV&DI+(CR), and the result would be:
+1.234567E+12m3/d(CR)
+3.1235926E+00m/s(CR)
+1234567E+0m3(CR)
7.5 Code for keypad
The codes for the keypad should be used when the instrument is connected with other terminals that operate the
instrument by transmitting the ‘M’ command along with the keypad code. By this function, remote operation of this
instrument can be realized, even via the Internet.
Key Hexadecimal
key code
0
1
2
Decimal
key code
ASCII
code
Key
Hexadecimal
key code
48
49
50
0
1
2
8
9
38H
39H
3AH
30H
31H
32H
Decimal
ASCII
key code code
56
57
58
8
9
:
SGM-100F - Warranty
Products supplied by SGM LEKTRA are guaranteed for a period of 12 (twelve) months from delivery date
according to the conditions specified in our sale conditions document. SGM LEKTRA can choose to repair
or replace the Product. If the Product is repaired it will mantain the original term of guarantee, whereas if
the Product is replaced it will have 12 (twelve) months of guarantee. The warranty will be null if the Client
modifies, repairs or uses the Products for other purposes than the normal conditions foreseen by instructions or Contract. In no circumstances shall SGM LEKTRA be liable for direct, indirect or consequiential or
other loss or damage whether caused by negligence on the part of the company or its employees or otherwise howsoever arising out of defective goods.
SGM-100F - Factory Test Certificate
In conformity to the company and ceck procedure I certify that the equipment:
SGM-100F....................
part nb. ......................
is conform to the technical requirements on Technical Data and it is made in conformity to the SGM-LEKTRA
procedure
Quality Control Manager:
.................................
Production and check date:
.................................
mod. 825B109A - documentation subject to technical change with no prior warning