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5.2.3

IIR (INFINITE IMPULSE RESPONSE) CONSTANT ........................................................................... 16

5.2.4

AMPLITUDE THRESHOLD ............................................................................................................... 16

5.2.5

PEAK DETECTOR TYPE .................................................................................................................... 16

5.3

MEASUREMENT PARAMETERS ................................................................................................................ 16

5.3.1

LEVEL UNIT ...................................................................................................................................... 16

5.3.2

LEVEL OFFSET .................................................................................................................................. 16

5.3.3

ACTIVE ZONE PARAMETERS .......................................................................................................... 17

5.3.4

SENSOR HEIGHT ............................................................................................................................. 17

5.3.5

STAFF GAUGE .................................................................................................................................. 18

5.3.6

OPERATION MODE ......................................................................................................................... 18

5.3.7

POWER MANAGEMENT .................................................................................................................. 19

6.1

SERIAL RS-232 INTERFACE ...................................................................................................................... 20

6.2

SERIAL RS-485 INTERFACE ...................................................................................................................... 20

7.1

SDI-12 PROTOCOL ................................................................................................................................... 21

7.1.1

MEASUREMENT COMMANDS ....................................................................................................... 21

7.1.2

X COMMANDS ................................................................................................................................. 22

7.2

NMEA PROTOCOL (RS-232) ..................................................................................................................... 25

7.2.1

LEVEL MEASUREMENT REPORT .................................................................................................... 25

7.2.2

TILT ANGLE REPORT ....................................................................................................................... 26

7.3

SERVICING PROTOCOL (RS-232) ............................................................................................................. 26

7.3.1

CHANGE INTERFACE PARAMETERS: ............................................................................................. 26

7.3.2

CHANGE PROCESSING PARAMETERS: .......................................................................................... 28

7.3.3

CHANGE PROCESSING PARAMETERS: .......................................................................................... 29

7.4

MODBUS PROTOCOL (RS-485) ............................................................................................................... 32

7.4.1

MASTER REQUEST FORMAT .......................................................................................................... 32

7.4.2

SLAVE (SENSOR) RESPONSE FORMAT .......................................................................................... 32

7.4.3

RETRIEVING DATA FROM THE SENSOR ........................................................................................ 33

7.4.4

WRITING TO THE DEVICE’S CONFIGURATION ............................................................................. 35

8.1

CONNECTING THE RADAR TO THE CONFIGURATOR ........................................................................... 38

8.2

CONFIGURATOR FUNCTIONS ................................................................................................................. 39

8.2.1

SETTINGS ......................................................................................................................................... 39

8.2.2

ECHO CURVE ................................................................................................................................... 40

Содержание 21216

Страница 1: ...EXTREME ENVIRONMENTS EXTREMELY RELIABLE NON CONTACT LEVEL METER Continuous Level Measurement Operating Manual 1 800 548 4264 www ftsinc com 700 SDI RADAR LX 80 Man Rev 1 08 Oct 2021...

Страница 2: ...ormation Canadian Headquarters 1065 Henry Eng Place Victoria BC V9B 6B2 Canada www ftsinc com Toll free 1 800 548 4264 Local 250 478 5561 Technical support portal http support ftsinc com Email service...

Страница 3: ...N 4 2 3 5 REFLECTIONS 4 2 3 6 RELATIVE MEASUREMENT 5 3 1 CONNECTOR PIN OUT AND WIRING 7 3 2 SDI 12 INTERFACE 8 3 3 SERIAL RS 232 INTERFACE 8 3 4 SERIAL RS 484 INTERFACE 8 3 5 ANALOG 4 20 mA OUTPUT 8 4...

Страница 4: ...1 7 1 1 MEASUREMENT COMMANDS 21 7 1 2 X COMMANDS 22 7 2 NMEA PROTOCOL RS 232 25 7 2 1 LEVEL MEASUREMENT REPORT 25 7 2 2 TILT ANGLE REPORT 26 7 3 SERVICING PROTOCOL RS 232 26 7 3 1 CHANGE INTERFACE PAR...

Страница 5: ...iii 10 1 SPECIFICATIONS 47 10 2 MECHANICAL ASSEMBLY 48...

Страница 6: ...regulations and guidelines During the entire duration of use the user is obliged to determine the compliance of the necessary occupational safety measures with the current valid rules and regulations...

Страница 7: ...ensors it is not affected by changes in air temperature and density The SDI RADAR LX80 is quickly and easily mounted to a pole above a water surface using the supplied mounting bracket part number 211...

Страница 8: ...rument is designed to detect and eliminate obstacles from the distance measurement signal spectrum However vibrations in the radar s mounting position can negatively impact this ability The radar beam...

Страница 9: ...sors will require precise coordination of the central frequencies with a timing synchronization in a range of 25 ns between each other Such synchronization is very complex to achieve so the interferen...

Страница 10: ...tive to the mounted sensor height Sensor height is defined as the distance from the mounted sensor position to the bottom of the riverbed This distance is a fixed value unique to every mounted unit It...

Страница 11: ...that given time is 1 34m The sensor detects water at the distance of 6 02m By setting the value 1 34m as the staff gauge measurement at the same time when the device measures the distance as 6 02m se...

Страница 12: ...AME PIN DESCRIPTION 1 White GND This pin should be connected to the ground negative pole of the power supply 2 Brown Vin Power supply Power supply voltage must be 9 to 27 VDC and the power supply must...

Страница 13: ...duplex serial interface with voltage levels adequate for direct connection to PC computers or other embedded devices used for serial RS 232 communication 3 4 SERIAL RS 484 INTERFACE Serial RS 485 int...

Страница 14: ...0 3 A Ensure the minimal and maximal values representing 4 mA and 20 mA have sufficient resolution for system requirements Figure 3 2 Analog 4 20 mA internal architecture Measurement of the current b...

Страница 15: ...ly listed The mounting location should be sturdy as vibrations of the mounting structure can affect the radar s algorithm ability to discard detected obstacles Table 4 1 Radar Height and Radar Beam Di...

Страница 16: ...olerate up to 2 along either axis if the site does not allow for a 0 tilt angle During the installation a level should be used to confirm the unit s position Additionally the tilt angle can be determi...

Страница 17: ...bits per second for serial communication on the RS 232 data line This setting controls how many bits are sent on the communication line in one second The available values are standardised Using highe...

Страница 18: ...nt will respond only to requests with the matching ID 5 1 3 MODBUS PARITY Figure 5 3 Modbus Parity Parity is used in serial communication for basic error detection In general all bytes on the receiver...

Страница 19: ...500 mm Alternatively if the resolution is not critical then the minimum value for 4 20 mA output can be left to the instrument minimum of 0 mm 4 20 mA max To configure the 4 20 mA output range the ma...

Страница 20: ...ter removes 20 of outliers and calculates the average of the remaining 80 of values Devices with firmware versions up to 2 2 8 support only No filter IIR and Moving average In this case it is recommen...

Страница 21: ...ld is used to filter noise and false readings and it is recommended to keep this value in the range 0 to 1000 5 2 5 PEAK DETECTOR TYPE Configures the type of algorithm which is used to detect the peak...

Страница 22: ...trongly recommended to set the Active zone min value to the minimum possible distance between the water and the instrument at the specific monitoring site Active zone max It is strongly recommended to...

Страница 23: ...rument Configurator Figure 5 10 Sensor Height Example 5 3 5 STAFF GAUGE Figure 5 11 Staff Gauge Setting the sensor height relative to the measurement is done using a staff gauge reading The sensor wil...

Страница 24: ...2 and Modbus interfaces SDI 12 mode The device remains in sleep mode until the SDI 12 Measure aM command is received While in sleep mode the device will not be able to connect to Modbus or RS 232 inte...

Страница 25: ...op bits 1 Parity None An NMEA like communication protocol is used to deliver level measurements over the RS 232 interface Detailed description of the protocol is given in Chapter 7 of this user manual...

Страница 26: ...vice responds with its SDI 12 address Default address is 0 zero Acknowledge Active a a Sensor at input address a is active Address Change aAb b Device at address a has changed address to b Send Identi...

Страница 27: ...sensor The format of X commands follows the requirement for standard SDI commands in that the first character of every command must be a sensor address which is then followed by the X command and ter...

Страница 28: ...eplace f with sensor height above riverbed Response a f aXGSGR f Set current staff gauge reading Response a f In which f is the current staff gauge reading Device will calculate sensor height above ri...

Страница 29: ...th a parameter d set to 0 zero xGLWU Wake up from sleep mode Response a 0 When the instrument is configured to operate in SDI 12 mode it goes to sleep until SDI 12 measure command aM is issued Connect...

Страница 30: ...rument and the water surface as measured by the instrument This value is calculated by applying the averaging filter to the data measurements Filter parameters can be adjusted using the Instrument Con...

Страница 31: ...ers are configured using this protocol Since NMEA protocol is one way it only outputs the data the servicing protocol is always active Easy radar configuration can also be done using the Instrument Co...

Страница 32: ...d byte Similarly when parity is set to even parity an additional bit is added to the communication that will be set to 1 when there is even number of bits with value 1 in the 8 bit payload byte In gen...

Страница 33: ...R Infinite impulse response filter is used to smooth the data When compared to the moving average filter the IIR filter reacts more quickly to initial changes in the data but it takes longer for the s...

Страница 34: ...0 1 Peak detector type Configuring the type of algorithm which is used to detect the peaks in the radar echo curve The default setting should be Maximum peak In specific cases such as when water leve...

Страница 35: ...um possible distance between the water and the instrument at the specific monitoring site Typically this is the distance between the instrument and the lowest point in the channel set_deadzone_max val...

Страница 36: ...power cycle the device and then use this application to connect to the device within 1 minute after power up If there is no attempt to connect to the device over RS 232 within one minute the device wi...

Страница 37: ...The request and response format with examples is given in Sections 7 4 1 and 7 4 2 In each request the master can either ask the slave to retrieve the value of one or more registers or the master can...

Страница 38: ...returned by the instrument when the master requests that the register is read Rows highlighted in blue denote the important values measured by the sensor Rows highlighted in green denote operating par...

Страница 39: ...700 SDI RADAR LX 80 Man Rev 1 08 Oct 2021 34 49...

Страница 40: ...llowing table defines how to write the device configuration Rows highlighted in blue denote the important values measured by the sensor Rows highlighted in green denote operating parameters that could...

Страница 41: ...700 SDI RADAR LX 80 Man Rev 1 08 Oct 2021 36 49...

Страница 42: ...700 SDI RADAR LX 80 Man Rev 1 08 Oct 2021 37 49...

Страница 43: ...ection to the instrument is not established To connect the Instrument Configurator with the instrument 1 Connect your PC to the radar using a serial cable connection 2 Then click the Connect button in...

Страница 44: ...to configure the instrument or upgrade the device to a newer firmware version Instrument settings are sorted into 3 groups Interfaces Processing and Measurement as shown below By clicking the name of...

Страница 45: ...uisition Navigating to the Echo Curve tab and clicking the Load Echo Curve button loads the current echo curve as shown in Figure 10 3 The echo curve plot shows the current echo curve in yellow as wel...

Страница 46: ...700 SDI RADAR LX 80 Man Rev 1 08 Oct 2021 41 49 TROUBLESHOOTING...

Страница 47: ...700 SDI RADAR LX 80 Man Rev 1 08 Oct 2021 42 49 continued...

Страница 48: ...700 SDI RADAR LX 80 Man Rev 1 08 Oct 2021 43 49 continued...

Страница 49: ...700 SDI RADAR LX 80 Man Rev 1 08 Oct 2021 44 49...

Страница 50: ...700 SDI RADAR LX 80 Man Rev 1 08 Oct 2021 45 49...

Страница 51: ...700 SDI RADAR LX 80 Man Rev 1 08 Oct 2021 46 49...

Страница 52: ...I 12 Analog 4 20 mA Physical Operating Temperature Range 40 85 C 40 185 F Ingress Protection Rating IP68 Connector M12 circular 12 pin Enclosure Dimensions 65 mm x H 55 mm 2 56 in x H 2 16 in Weight 5...

Страница 53: ...700 SDI RADAR LX 80 Man Rev 1 08 Oct 2021 48 49 10 2 MECHANICAL ASSEMBLY All measurements in mm...

Страница 54: ...700 SDI RADAR LX 80 Man Rev 1 08 Oct 2021 49 49 DOCUMENT REVISION HISTORY Revision Date Description 1 09 Oct 2021 Original PM 287...

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