WLS01 Water Level And Flood Monitoring Systems |
Monitoring Flood and Water Level
The WLS01 uses either the PM04x or the PM05x remote moniotoring alarm unit datalogger that consumes very little power, and interface to a water level sensors for measuring, display, datalogging and real time telemetry transmission to Testech WEBMON WebBase or windows base platform for real time monitoring and alarm alert applications.
Installation at Remote Areas.
As the power consumption of our datalogger are very low, the system are well
suited to be solar power or wind power for continuous 24 x 7 real time
monitoring. System can be use to measure water level in Canal, Storm Water
Drain, River etc.
Real Time Datalog Transmission to Server
Datalog are real time transmitted to server SCADA (WEBMON) using GPRS or SMS. In the case of large amount of datalog memory we recommend using GPRS for very fast tranmssion and real time update.
Ease Of Calibration
Calibration in the field is very easy and can be done by only 1 person. The sensors are calibrated with known water level using the PM04x/PM05x keypad or user can chose to connect to PC via Serial COM or USB Serial COM for user menu calibration. Calibration are digitally saved in non volatile memory.
Ease Of Maintenance
WLS01 uses the proven PM04x/PM05x Remote Telemetry unit that is very easy for personel to check operation, setup and maintain. LCD Display shows network status, datalogging status, and sensor level information. Keypad allows sensor calibration and phone setup in the field without notebook.
Interfacing to Water Level Sensor
The WLS01 accept water level sensor in 4-20mA transmitter output. High resolution 16bit ADC in the WLS01 allows very precise measurement of the water level. Any type of level sensor can be interface to WLS01 as long as the output is 4-20mA. The WLS01 provides for field sensor calibration allowing user to calibrate the level sensor on site, allowing precise calibration even as the level sensor is slightly altered in output level due to difference in levitation level of the site with respect to sealevel.
Maintenance And Calibration of Water Level Sensor
The sensor are easily maintain, simply flip the WLS01 Switch to Service Mode that will disable the datalogging, and bring up the water level sensor for cleaning in soap water. After which the user can optionally calibrate the sensor using known water level. Renable the WLS01 to Normal Mode and the unit is back to operation.
Alarm Level and Logging Interval.
The Logging Interval can be specified in multiple levels.
a) Below Operating Level that is where the water level is very low, and usually
this is of no interest and logger can be set to long interval such as
>10minutes.
b) Operating Level whereas the water level is normal. At Operating Level the
monitoring interval can be set at 1 minutes interval to 10 minutes interval
c) Critical Level whereas the water level is very high and maintenance personal
should be alerted.
d) Cope Level whereas the water level has risen beyond the river bank or canal
height.
As the critical level and cope level is of importance, the logger is capable of logging at very fine interval to 15 secs intervals and update the server every 1 minutes for real time update.
Interfacing to SCADA
WLS01 interface to Testech WebMon HMI SCADA for real time display that the customer can view from anywhere in the world using any webclient software. See the link to WEBMON
SMS Alert
SMS Alert can be send directly from WLS01 Remote Monitoring Systems, or from WebMon SCADA Software. Each level of alarm can be individually enable or disable. WIthout the availabilit of WebMon, user can send SMS command directly to enable or disable SMS Alert at each level including rising/falling stage of the water level.
Setting Alarm Level
The Water Level alarm limit are set at the WLS01 RTU during setup using a serial terminal connected to a PC or notebook. Once the alarm limit are set, it can be saved in non volatile memory in the WLS01 RTU. Once the unit are deployed in remote areas, user can send SMS to the RTU to change or set the alarm level, as well as enable/disable alarm alert, and also changes the way the alarm SMS are being send out base on rising/falling stage as it cross the alarm limit.
Date and Time Stamp
WLS01 has a battery backed Real Time Clock Calender and all datalog values are precisely date and time stamp.
Large datalog Memory and Mini/MicroSDCard
WLS01 has a large datalog memory using the hardware real time semiconductor buffer datalog memory (either 32KB, 712KB or 1GB MiniSDCard or MicroSDCard) depending on the model customisation of the WLS01. The SDCard allows user to simply remote the card and bring back to maintenance office for data upload or synchronisation. This redundancy allows user to retrieve datalog data in any event the Server SCADA PC is down due to Hardware or Network Issues.
Remote Verification
The server can remotely poll the Remote Terminal Units to verify the faults. User send a System Querry SMS to the RTU (?SQ) and the PM04x will return a SMS/GRPS reporting the system status, network status. USer can request for water level information by sending SMS Command.
Remote Control
The server can send SMS to remote RTU to command the unit to :
a) Change Alarm Limit Value.
b) Enable the SMS/GPRS/Alert Notification.
c) Change Logging Interval.
d) Change Phone Numbers.
e) Many others possible if the PM04x has custom modification to suit user interface of external equipments
Customisation
For more information contact us including any custom build requirements. We welcome customisation nquiry that interface the WLS01 to other type of sensor for water quality measurement such as PH, Dissolve Oxygen, Turbidity, Temperature, RH etc. Rain Gauge measurement are available on another units. Contact us for any customisation request.