<2cm (depend on the space between sensor bottom and tank bottom)
10-32V DC (optional for 5V DC)
RS485, RS232, 0-5V, 4-20mA, TCP
-40 ~ 85℃
The DF300 is one kind of high resolution capacitance level sensor, the resolution is 0.1%FS or 1mm (the bigger value). It is made of stainless steel 304 (optional for 316). It is robust for vibration, such as vehicle, generator, railway train and etc. Also it is good for bad quality liquid, such as sewage or other water.
It is applicable for the close container or open container or pool or river. As with RS485, it is easy to integrateinto the embedded system or SCADA.
In order to realize remote monitoring, there are wireless module optional for DF300, including zigbee, Wifi, GPRS3G. Furthermore, GPS module is one optional for the DF300. As a result, DF300 can be used as gps tracker also.
3 Mechanical Drawing
5 Test Report
F300, cylinder container, computer
Difference of Two Test
Variation for different batch <=3.5%
6 Interface Definition
Green Line:0-5V voltage
Yellow Line: RS232(TXD)
Green Line : RS485 A
Yellow Line: RS485 B
Red Line :24V+
Green Line :4-20mA
6.5 Wireless version (Zigbee/Wifi/GPRS/3G)
Pin 1: Red Line: V+,
Pin 2: Black Line: GND
Notes: If there is labels on sensor for pin definition, please act as the labels.
7Installation & Calibration
Before the installation, please check sensor and accessory,such as rubber blanket,screws and tools for drilling hole.
If your tank have a old probe sensor ,you need to remove ,then put the new sensor on your tank . Otherwise,you can directly go to next step.
Drill big hole on the tank according to the following diagram, diameter is 30-40mm.
Then put the flange on the big hole, and position the small screw, then drill small hole for screw.
Put the glue on the rubber blanket ,then put it under the flange
Put the sensor in the tank at first ,screw to fix it
Connect the power line and signal line according to the definition
Notes: Mounting Position of the sensor should be close to the center of the tank, which can reduce the oil level slope and oil level wave when the vehicles are uphill and downhill.
The sensor is automatically calibrated, so no need to do special calibration.
8.4 Set damping parameter
Request: from computer to sensor
ASCII : $!Z40134
Z is command,01 is ID of sensor,
4 is damping sensor, the range is 1,2,3,4,5,6, . 1 is the smallest parameter, in this condition, the value will update quickest. 6 is the biggest value, in this condition, the fluctuation will be filtered mostly.
In hex : 24 21 5A 34 30 31 33 34 0D 0A
Reply: fro sensor to computer
ASCII : *SZN01OKOKOK54 is ok reply
*SZN01NONONO5D is fail reply
In hex : 2A 53 5A 4E 30 31 4F 4B 4F 4B 4F 4B 35 34 0D 0A
2A 53 5A 4E 30 31 4E 4F 4E 4F 4E 4F 35 44 0D 0A
Notes: The protocol maybe update without notification. Please contact with us for the latest protocol.
Model Naming Rules
Packaging & Shipping
Delivery : DHL / UPS / FedEx / EMS
Dingtek Technology Group locates in china and has three branches in Beijing,Qingdao,and Hongkong.It has independent R&D center,production center and 24 hour quick response service network.
Since 2006,Dingtek has been focused on embedded system development,automation research and application.Our main business covers sensors design and manufacturing,embedded system design and development,complicated system integration and etc.the application covers automation,automotive,locomotive,new energy.
Besides the standard products,we also offer ODM/OEM for customers’ special requirement.Not only software design,but also hardware design.we provide not only products,but also satisfactory service!
We warrants this quality product to be free of defects inmaterial and workmanship for a period of 12 months from the date of purchase. During the period, we will repair or replace the product at no charge for partsor labor. But the shipment fee will be shared by the buyer (one party 50%).
The time period of this warranty starts from the date of the original purchase and expires on the first anniversary date of purchase.
No express or implied warranty is made for any defects in this product which result from accident, abuse, misuse, failure to operate the product in accordance with relevant instructions, neglect, immersion in or exposure to chemicals or liquids, extremes of climate, fungus, excessive wear and tear/cosmetic damage and defects resulting from other extraneous causes such as unauthorized disassembling, repair or notification.
This warranty shall not extend to any incidental or consequential damages arising from the purchase, use or inability to use this product .
The laws of some countries and some States thereof do not allow the limitation of incidental or consequential damages, so the above limitation or exclusion may apply to you.