Sofraser 9200 Manuale utente
Original version
REF.: 380-5
9
200
Viscosity and temperature
transmitter
Technical Manual
Technical Manual 9200
REF: 380/5 3
IMPORTANT
THE OFFSET ADJUSTMENT IN THE AIR
MUST BE THE FIRST TASK COMPLETED.
Offset adjustment procedure is detailed in § 3.3.
1. CLEAN AND DRY THE SENSOR ROD.
2. BE SURE THE PROCESS IS EMPTY. THE ROD MUST BE VIBRATING IN THE AIR.
3. INSTALL THE SENSOR ON THE PROCESS AND FIX IT WITH ITS 4 SCREWS.
4. POWER ON THE DEVICE, WAIT 15 MINUTES.
5. PRESS THE “HOME” BUTTON UNTIL REACHING THE OFFSET MENU AND PRESS
“OK”.
6. FOLLOW THE INSTRUCTIONS DISPLAYED ON THE ELECTRONICS SCREEN.
7. PRESS “OK” TO ADJUST THE OFFSET. IT MEANS THE RAW SIGNAL IS SHIFTED TO
THE VOLTAGE REFERENCE DEFINED IN THE FACTORY CALIBRATION STAGE.
THE NEW OFFSET VALUE IS THEN DISPLAYED.
Technical Manual 9200
REF: 380/5 4
Table of contents
1. TRANSMITTER PRINCIPLE ................................................................................................. 5
2. PROCESSOR TECHNICAL CHARACTERISTICS .................................................................. 6
2.1 Electronic device size ............................................................................................................................................ 6
2.2 Main features .............................................................................................................................................................. 7
2.2.1
Best performance conditions .................................................................................................. 7
2.2.2
Display ..................................................................................................................................................... 7
2.3 Connections ................................................................................................................................................................ 7
2.3.1
Top connector .................................................................................................................................... 8
2.3.2
Bottom connector ........................................................................................................................... 9
3. THE 9200 OPERATING FUNCTIONS ................................................................................ 10
3.1 Start and menus ..................................................................................................................................................... 10
3.2 Raw values .................................................................................................................................................................... 11
3.3 Offset ................................................................................................................................................................................ 11
3.4 Viscosity and temperature units .................................................................................................................. 12
3.5 Check 4-20 mA ......................................................................................................................................................... 12
3.6 Correlation ................................................................................................................................................................... 13
3.7 Enable or disable temperature ..................................................................................................................... 14
4. RS485 FRAME PROTOCOL ............................................................................................... 15
5. SOFRASER INTERFACE SOFTWARE ................................................................................ 17
5.1 The main features ................................................................................................................................................... 17
5.2 The user-friendly interface ................................................................................................................................ 17
6. TROUBLESHOOTING ........................................................................................................ 18
Technical Manual 9200
REF: 380/5 5
1. Transmitter principle
The measuring chain is composed of three inseparable elements: the sensor, its cable and the 9200
transducer that controls it. The sensor cannot be used with another transducer or another
cable type or length because they are all a part of the resonant loop so they are matched
together as one vibrating system.
The active part of the sensor is composed of a vibrating rod held in oscillation at resonance frequency
by driving magnets. When the rod is immersed into a viscous material, the amplitude of the
vibration is dampened. The vibration amplitude varies according to the product viscosity
where the rod is immersed.
The sensor receiving coil detects the response and the signal is converted to a viscosity value
through the electronic device. The factory calibration is performed with standard oils.
The transducer acquires the coils’ amplitudes and frequency and generates various signals. These
signals represent the properties being measured. It is also in charge of powering the whole
system. It gives viscosity and temperature information through the serial communication and
displays it. The transmitter also allows simple settings as the very important “zero in the air”
procedure.
Technical Manual 9200
REF: 380/5 6
2. Processor technical characteristics
2.1 Electronic device size
The electronic box has the purpose to be fitted in a panel, close to the process line. The collar is the
only visible part, composed of a face plate and a LCD screen. It is continuously displaying the
viscosity value and, in the case there is a Pt100 probe, the temperature value.
The ID label is stick on the bottom of the box. Main information is written down. There is also another
sticker on the back panel to remind how to connect the sensor, the outputs and the power
supply (see §2.3).
It has an IP20 rating. Its weight is about 240 g.
Hereunder are the different views and the associated dimensions (in mm) of the device.
Collar (visible part): 48 * 96 * 10
Fitted part: 43 * 90 * 115
Panel cut out: 44 * 91
43 mm
115 mm
96 mm
Left side
96 mm
48 mm
124 mm
Front panel
Technical Manual 9200
REF: 380/5 7
2.2 Main features
2.2.1
Best performance conditions
The processor must be connected to a 24 VDC (± 2.4 V) stabilized and filtered power supply.
It is very important to respect the polarity.
The operating temperature for this electronics is up to 40 °C.
It is recommended to install this electronics in a safe place with a stable temperature and non-
condensing atmosphere.
To ensure the proper behavior of the two 4-20 mA current outputs, it is highly recommended to
connect them to a PLC or a regulator through a galvanic isolated device (one for each current
output).
Never connect the 4/20 mA outputs to a power supply, an active PLC input or tester
2.2.2
Display
The 9200 transmitter device has a 2-line alphanumeric backlighting LCD screen. The effective
dimensions of this screen are 64 mm * 15 mm. One line can display 16 digits. This screen is
showing the different menus with the help of the 2-button face plate.
2.3 Connections
All the connections to the electronic device are made through the back panel. There are two 10-pin
green connectors plugged to the board.
As a convention, we refer to the bottom and top connectors as the terminal block screws are headed
up.
Picture 1: back panel
Technical Manual 9200
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2.3.1
Top connector
Connections for the top connector (not cabled in our picture example) have to be made by the user
scrupulously respecting the following indications.
The plugging scheme of the top connector is as follows:
Pins 1 to 4 are 4/20 mA outputs for Viscosity and Temperature. They have been calibrated according
to customer's request. They must be connected to installations with an impedance of not more
than 350. It is recommended to use armed cables for these outputs and the shield should be
pressed in the earth terminal screw. They are already powered internally.
When the measured value is out of the configured range of the 4/20 output (below minimum value
or over maximum value), the output passes in default mode and is forced to 22 mA.
Never connect the 4/20 mA outputs to a power supply, an active PLC input or tester
Pins 5 and 6 are used to connect the RS-485 cable in order to communicate with an external
console.
Pins 7 and 8 are for the 24 VDC (± 2.4 V) stabilized and filtered power supply.
Caution: watch out the polarity
Pins 9 and 10 are not used.
Caution: Do not plug anything.
Interface to the outside world
(Outputs and power supply)
Links to the MIVI sensor and earth
grounding
Technical Manual 9200
REF: 380/5 9
*
2.3.2
Bottom connector
The plugging scheme of the bottom connector is as follows:
Pins 11 to 14 make the connection between the electronic board and the MIVI sensor itself. This is
how the driving signal is generated and how the receiving signal is measured.
Pins 15 to 17 are used to connect the Pt100 probe wires.
Pin 18 is the Earth connection.
* The white wire of the MIVI is only present for intrinsically safe version of the sensor. For other
configurations, this white wire is cut and only the metal wire is connected to Pin 18.
Pins 19 and 20 are not used. By default, a wire makes the shortcut between the two pins (see picture
2).
Picture 2.1: bottom connector
When the cable is short and the
sensor is correctly earth grounded
Picture 2.2: bottom connector
It may be necessary to earth ground the
transmitter directly on PIN18
Technical Manual 9200
REF: 380/5 10
3. The 9200 operating functions
3.1 Start and menus
After turning on the device, the LCD screen switches on and it will take a few seconds to display the
measured viscosity and temperature values.
This is the main screen, the one displayed in working mode.
By pressing the “Home” button (small house icon), we get access to the seven different menus
proposed by the processor. We can browse from one to the other with the help of Home. To
enter into a menu, one must press OK.
If you keep the Home button pressed during 3 seconds you will automatically move back to the
main screen of the 9200 displaying the viscosity and the temperature.
Visc: 105.3 mPa.s
Temp: 25.36 °C
Temperature Unit
°C
Viscosity Unit
cP
Correlation
None
Raw values Check 4-20mA
Offset
7
Temperature
Enabled
Indice
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