USER GUIDE FOR WIRELESS RADAR LEVEL METER
| WS433-MA-RD-MN-EN-01 |
NOV-2020 |
This document is applied for the following products
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SKU |
WS433-MA |
HW Ver. |
2.5 |
FW Ver. |
5.0 |
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Item Code
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WS433-MA-31 | Wireless Sensor 1-channel 0-20mA DC current input, IP67, battery AA 1.5VDC, 24VDC Output for Instrument power supply | |||
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SKU |
RD269X |
HW Ver. |
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FW Ver. |
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Item Code |
RD2695S-P-B(J)-04-A3(04)-V-4-L-N-V-6 | 26GHz RadarLevel transmitter, 78mm PVDF protection tube, SUS304 JIS10K 80A RF Flange, 0-6m cablibrated range, 4-20mA output, looped power, HART, IP67 aluminum housing | |||
0. Configuration Check List
0.1 Wireless sensor configuration check list
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STEP 1: Insert battery into the sensor |
Please note the battery terminals for correct installation |
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STEP 2: Add sensor to co-ordinator |
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After inserting the battery for the sensor, power on the co-ordinator and bring the co-ordinator closer to the sensor to add the sensor automatically. |
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STEP 3: Configure the sensor's operating parameters |
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Use Modbus tool to check added sensors and configure sensor operating parameters. |
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STEP 4: Check operation of the sensor |
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STEP 5: Sensor installation and operation |
| Install sensor on site |
0.2 Radar level meter configuration check list
PLEASE REFER TO THE MANUFACTURER'S INSTRUCTIONS CAREFULLY TO AVOID DAMAGING THE DEVICE:
USER MANUAL OF RADAR LEVEL METER
INSTRUCTIONS FOR CONFIGURING SENSORS WITH LCD MODULE
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STEP 1: Remove the battery |
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STEP 2: Remove 4-20mA wires |
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STEP 3: Power supply 24VDC to 2 pins 4-20mA on the Radar Sensor |
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Power supply 24VDC to 2 pins 4-20mA on the Radar Sensor with 250 Ohm resistor connected in series. |
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STEP 4: Install the LCD module |
| Install the LCD module to the radar sensor for configuration. |
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STEP 5: Configure the sensor parameters according to the manufacturer's documentation |
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STEP 6: Remove the LCD module and reinsert the 4-20mA signal wires and insert the batteries into the sensor |
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1. Functions Change Log
| HW Ver. | FW Ver. | Release Date | Functions Change |
| 2.5 | 5.0 | DEC-2019 |
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2. Introduction
This is a wireless sensor that measures water level using radar technology. The combination of a high-tech radar level sensor combined with a wireless sensor using Texas Instrument's advanced Sub-GHz technology enables long-range transmission with extremely low energy consumption. It will connect 2-way wireless with WS433-CL wireless co-ordinator to send data and receive configuration. It can be configured with operational parameters such as data delivery interval, health check cycles ... remotely from the Globiots platform or via the ModbusRTU software (via WS433-CL). Its default data rate is 50 kbps, which can be converted to 625 bps for increased communication range. The sensor can operate for up to 10 years with just one AA battery. Sensors can be used to measure water or liquid levels as well as for measurement in areas such as river level monitoring, chemicals, municipal water supply and drainage, etc.
3. Specification
3.1 WS433-MA Specification
| Measuring range | 0 .. 20mA |
| Accuracy | 0.05% of span |
| Resolution | 1/3000 |
| Temperature drift | < 50ppm |
| Optional accessories | 304SS Adapter PG9/male 1/2"NPT or PG13.5 or M20 to allow direct mounting on Process instruments or electrical panel |
| Data speed | Up to 50kbps |
| Transmission distance, LOS | 500m |
| Antenna | Internal Antenna, 3 dbi |
| Battery | 01 x AA 1.5VDC, up to 10-year operation, depends on configuration |
| Frequency Band | ISM 433Mhz, Sub-GHz technology from Texas Instrument, USA |
| Receiving Sensitivity | -110dBm at 50kbps |
| International Compliance | ETSI EN 300 220, EN 303 204 (Europe) FCC CFR47 Part15 (US), ARIB STD-T108 (Japan) |
| Security Standard | AES-128 |
| Operating temperature of PCB | -40oC..+60oC (with AA L91 Energizer) |
| Housing | Poly-carbonate, IP67 |
| Installation method | L-type bracket SUS304 , by M4 screws or double-sided 3M tape (included) |
| Product dimensions | 125x30x30mm |
| Net weight (without battery) | < 100g |
| Box dimension | 190x50x50mm |
| Gross weight | 140g |
3.2 RD-2695S Specification
| Features | Sealed antenna with anti-corrosion cover |
| Application | Be suitable for strong acids, alkalis, or other strongly corrosive liquids, or liquids with heavy steam, etc. |
| Antenna size | ** 62mm, corresponding to flange sizes, DN80, DN100 ** 96mm, corresponding to flange sizes, DN150, DN200 |
| Measuring range (Maximum) | 35m |
| Process connection | Flange |
| Process temperature | -60°C … +150°C |
| Process pressure | -0.1 ~ 1.0MPa |
| Accuracy | ±3mm |
| Frequency range | 26GHz |
| Explosion proof | Ex ia IIC T6 |
| Enclosure protection grade | IP67 |
| Signal output | 4-20mA/ HART (2-wire/ 4-wire), RS485/ Modbus |
4. Operation Principle
4.1 WS433 Wireless Transmitter
When the sensor sampling time interval is reached, for example 2 minutes, the node will wake up and switch ON the power supply to supply the energy to external sensor to start the measurement. Depends on the type and characteristic of external sensor, the sensor will take a certain time to finish the measurement.
For example: the measurement time is 200mS, after this time, the node will read the value of sensor using I2C, node will switch OFF power supply to external sensor to save energy.
Once reading the sensor value, the raw data is X, it can be scaled to any engineering value by the following formula:
Y = aX + b
Where
X: the raw value from sensor
Y: the calculated value for parameter 1's value or parameter 2's value
a: constant (default value is 1)
b: constant (default value is 0)
So, if there is no user setting for a and b ==> Y = X
The Y value will be compared with Lo and Hi threshold.
Status bytes of sensor Node
- Hi-Byte is error code
| Error code | Description |
| 0 | No error |
| 1 | Just exchange the sensor module but node has not been reset ==> please take out the battery for 20s then install it again to reset node to recognize the new sensor module |
| 2 | Error, sensor port M12F shorted to GND |
| 3 | Error, sensor port M12F shorted to Vcc |
| 4 | Error, sensor port M12F shorted each other |
- Lo-Byte is sensor type
| Error code | Description |
| 0 | No error |
| 1 | Just exchange the sensor module but node has not been reset ==> please take out the battery for 20s then install it again to reset node to recognize the new sensor module |
| 2 | Error, sensor port M12F shorted to GND |
| 3 | Error, sensor port M12F shorted to Vcc |
| 4 | Error, sensor port M12F shorted each other |
4.1.1 Add sensor to co-ordinator
After inserting the battery for the sensor, power on the co-ordinator and bring the co-ordinator closer to the sensor to add the sensor automatically.
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Step 1: After supplying power the Co-ordinator via M12 connector, the Node ID must be registered within the first 5 minutes, up to 40 WS.
Step 2: Bring the wireless sensor closer to the Co-ordinator's antenna then take off the wireless sensor battery, wait for 5s then insert the battery again. If:
- Buzzer plays 1 peep sound, LED blink 1 time, that means registering Node ID on Co-ordinator successfully.
- Buzzer plays 2 peep sounds, LED blink 2 times, that this Node ID is already registered.
If you do not hear the "Peep" sound, please disconnect the power the co-ordinator, wait a few minute and try again.
Node id added in this way will be written to the smallest node_id_n address which is = 0.
Set Rssi_threshold (see RF MODE CONFIG (in the Modbus Memmap of WS433-CL), default -25): The case if Co-ordinator is on high position and need to add node sensor. We set the sensor as close as possible and set the Rssi_threshold to -80, -90 or -100 to increase the sensitivity to allow WS433-CL-04 can add sensors at a longer distance. After that, perform 2 steps of adding sensors and then reset Rssi_threshold = -25.
Enb_auto_add_sensors configuration (see RF MODE CONFIG (in the Modbus Memmap of WS433-CL)): In case you do not want to turn off the power WS433-CL, you can set Enb_auto_add_sensors = 1, this way we have 5 minutes to add nodes (add up to 40 nodes) . After 5 minutes Enb_auto_add_sensors will automatically = 0.
Memmap resgisters
You can download Modbus Memmap of WS433-CL with the following link:
https://filerun.daviteq.com/wl/?id=BKEaUzdArkoc0Hc7nfpRShdPVToVrqQZ
4.1.2 Add sensor node into WS433-CL-04 (1) through intermediate WS433-CL-04 (2) and Modbus
In case the sensor need to be added to WS433-CL-04 (1) has been installed in a high position, the sensor cannot be brought close to WS433-CL-04 (1). For more details:
4.1.3 Button Function
Open the cover of sensor then use the push button to set the data transfer speed for the first 30 seconds when the battery is first installed, after 30 seconds the push button function does not work.
- Press and hold the button for 2 seconds => LED blinks once => Release the button to set Data rate RF 50kbps
- Press and hold the button for 5 seconds => LED blinks twice => Release the button to set Data rate RF 625bps
- Press and hold the button for 10 seconds => LED blinks 3 times => Release the button to reset RF parameters (frequency, RF output power, data rate), if held for more than 30 seconds then the button function does not work.
Reset default WS433:
Frequency: 433.92 MHz
RF transmit power: 15 dBm
RF data rate: 50 kbps
4.1.4 Configure sensor parameters in Co-ordinator
First, you need to prepare
Num of Node will indicate the number of nodes managed by WS433-CL.
Every time a node is added, the Num of Node will increase by 1.
Every time a node is deleted, the Num of Node is reduced by 1.
Writing Num of Node = 0 will delete all 40 node ids to 0.
If you want to delete a node id, then write it = 0 with the Write function is 16 and the Read function is 3.
Step 1: Connect Antenna, RS485 - configuration cable and power supply co-ordinator
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Step 2: Open Modbus tool on PC
- You can download Daviteq Modbus Configuration Tool with the following link:
https://filerun.daviteq.com/wl/?id=qK0PGNbY1g1fuxTqbFW9SXtEvCw7bpc6
Template File: https://filerun.daviteq.com/wl/?id=hgrjOg3wwvyrvAZ54p8iZiFpDyXTcnec
How to use the Modbus configuration software
- Unzip file and run file application "Daviteq Modbus Configuration Tool Version"
- Choose COM Port (the Port which is USB cable plugged in)
- Set the BaudRate: 9600, Parity: none
- Click “ Connect “ untill the Status displays “disconnected” to “connected“. It means the WS433-CL-04 is being connected with computer;
- Next, we need to import the configuration file for WS433-CL-04 by importing the csv file: Go to MENU: FILE / Import New / => select the template file.
Step 3: Configure the sensor's operating parameters.
Use Modbus tool to check added sensors and configure sensor operating parameters.
Memmap resgisters
You can download Modbus Memmap of WS433-CL-FW with the following link:
https://filerun.daviteq.com/wl/?id=WBbGm89AToHWyvIyMOc780N1KmjfUr3Y
In the memmap file, refer to the Memmap of WS433-AI sheet to configure the sensor's operating parameters accordingly.
The reference memmap addresses are based on the order of the sensors added in the Memmap file above
Below are examples of some typical sensor parameters:
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Function Code (Read) |
Function Code (Write) |
# of register |
Byte Size |
Description |
Value Range |
Default |
Format |
Property |
Explanation |
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4 |
1 |
2 |
%Battery of sensor Node |
10,30,60,99 |
uint16 |
Read |
Battery level, only 04 levels: 10%, 30%, 60% and 99% (full). When 10% ==> Need to replace the battery |
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4 |
2 |
4 |
Analog value 1 of sensor Node (parameter 1) |
float |
Read |
Value from Analog input sensor. This value is parameter 1 of a wireless sensor node |
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4 |
2 |
4 |
Value of parameter 2 of sensor Node |
float |
Read |
Same value as parameter 1 |
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3 |
1 |
2 |
Data status of Node |
0-9, 99 |
byte |
Read |
0-9: Interval updated data 99: Disconnected |
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3 |
1 |
2 |
RF Signal strength of Node |
0-4 |
byte |
Read |
From 0 to 4 with 0 is being lost connection RF and 4 is the strongest RF |
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3 |
16 |
1 |
2 |
Cycle_wakeup |
1-3600(s) |
120 |
uint16 |
Read/Write |
Every time interval of Cycle_wakeup, sensor node would ONLY send data to co-ordinator if the new measured value was changed more than the Delta value of the last measured value. Default Cycle_wakeup is 120 seconds |
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3 |
16 |
1 |
2 |
Cycle_healthsta |
60-7200(s) |
600 |
uint16 |
Read/Write |
Every time interval of Cycle_healthsta, sensor node will absolutely send data to co-ordinator regardless any condition |
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3 |
16 |
2 |
4 |
Radio frequency |
433.05-434.79, 433 Mhz |
433.92 |
float |
Read/Write |
Configure the operating frequency of wireless sensor by Co-ordinator, should be configured from 433.05-434.79 MHz, only for advanced users |
4.2 Radar Sensor RD-2695S
The Radar Level Transmitter antenna emits narrower micro wave pulses which will be transmitted via the antenna. The micro wave will be reflected back after touching the surface of a medium, then antenna system will receive it and transmit it into the electrical circuit, which will be automatically turned into the level signals.
Note:
When using the radar level transmitter, must keep the highest level of medium out of the dead zone
(see area D shown in the drawing)
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- A: Setting measuring range
- B: Low level adjustment
- C: High level adjustment
- D: Dead zone
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Measuring reference: the bottom surface of threads or the sealing surface of a flange.
PLEASE REFER TO THE MANUFACTURER'S INSTRUCTIONS CAREFULLY TO AVOID DAMAGING THE DEVICE:
USER MANUAL OF RADAR LEVEL METER
INSTRUCTIONS FOR CONFIGURING SENSORS WITH LCD MODULE
5. Wireless sensor installation
5.1 Installation location
To maximize the distance of transmission, the ideal condition is Line-of-sight (LOS) between the Wireless sensor and Gateway. In real life, there may be no LOS condition. However, the Wireless sensor still communicates with Gateway, but the distance will be reduced significantly.
ATTENTION:
DO NOT install the Wireless sensor or its antenna inside a completed metallic box or housing, because the RF signal can not pass through the metallic wall. The housing is made from Non-metallic materials like plastic, glass, wood, leather, concrete, cement…is acceptable.
5.2 Power supply and battery installation
5.2.1 battery installation
Recommends using type D batteries for wireless sensors.
ATTENTION:
REVERSED POLARITY OF BATTERIES IN 10 SECONDS CAN DAMAGE THE SENSOR CIRCUIT !
Step 1: Remove the battery cover of the sensor
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Step 2: Insert a type D battery into the sensor
5.2.2 Power Supply
Insert the power cord into the sensor via Cable Gland
Power supply 24VDC and GND into electric domino
ATTENTION:
WHEN CONNECTING A WIRING PLEASE PAY ATTENTION TO THE NAMES MARKED ON THE LINE
REVERSED POLARITY CAN DAMAGE THE SENSOR CIRCUIT !
6. Troubleshooting
| No. | Phenomena | Reason | Solutions |
| 1 | The status LED of wireless sensor doesn't light up |
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| 2 | Wireless sensor not connected to co-ordinator |
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7. Support contacts
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Manufacturer
Daviteq Technologies Inc Email: info@daviteq.com | www.daviteq.com
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Distributor in Australia and New Zealand
Templogger Pty Ltd Tel: 1800 LOGGER Email: contact@templogger.net |
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