F300 capacitance type level sensor fuel level sensor for truck applicabled for fuel gasoline water ethanol analog output
1 overview
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 integrate into the embedded system or SCADA.
In order to realize remote monitoring, there are wireless module optional for DF300, including zigbee, Wifi, GPRS, 3G. Furthermore, GPS module is one optional for the DF300. As a result, DF300 can be used as gps tracker also.
2specifications
| Length | 10-1000mm |
| Resolution | 0.01mm |
| Pressure | -0.1MPa~0.1MPa |
| Sensor diameter | 16mm |
| Output | Analog Voltage:0-5V , or Digital: RS 232/485 |
| Voltage | DC 12~40V |
| Explosion-proof | EXia II C T6 |
| Mounting | Flange |
| Media | Diesel |
4 Mechanical Drawing
5System Diagram
6Test Report
6.1 Device
F300, cylinder container, computer
6.2 Data
| Round I | Round II | Difference of Two Test | ||
| Batch | S/N | Unit(0.1%) | ||
Old Design | 140317 | 140317089 |
| 451 |
|
140317102 | 421 |
|
| ||
140317127 | 420 | 444 | 24 | ||
New Design | 150306 | 150306009 | 417 | 444 | 27 |
150306035 |
| 452 |
| ||
150424 | 150424005 | 392 | 417 | 25 | |
150424010 | 409 | 439 | 30 | ||
150424015 | 401 | 426 | 25 | ||
Max | 421 | 452 | 31 | ||
Min | 392 | 417 | 25 | ||
Mean | 410 | 439 | 29 | ||
Variation | 29 | 35 |
| ||
6.3 Conclusion
Variation for different batch <=3.5%
7 Installation & Cases
7.1 Installation
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.
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
8 Protocol (for RS232/485/wireless version)
The default baud rate is 9600bps, one start bit, eight data bit, one stop bit, no checksum bit.
8.1 Read Level AD Value
Request: From device to sensor.
ASCII: $!RY0151
Hex: 24 21 52 59 30 31 35 31 0D 0A
$! is header, RY is command, 01 is sensor id, 51 is end.
Reply: From sensor to device
ASCII: *CFV0100FA32B6
Hex: 2A 43 46 56 30 31 30 30 46 41 33 32 42 36 0D 0A
* is header, CFV is reply command. 01 is sensor id. 00FA32 is AD value for level. 00 is the padding to fulfill 6 bytes of data section required. FA32 is the level AD value. Level 0%~100% equals with 000000~00FFFF.
8.2 Read Level Percent
Request: From device to sensor.
ASCII: $!DO0139
Hex: 24 21 44 4F 30 31 33 39 0D 0A
$! is header, DO is command, 01 is sensor id, 39 is end.
Reply: From sensor to device
ASCII: *RFV01000.0198
Hex: 2A 52 46 56 30 31 30 30 30 2E 30 31 39 38 0D 0A
* is header, RFV is reply command. 01 is sensor id. 000.01 is the level value in percent. Max is 100.00.
8.3 Set Sensor ID
Request: From device to sensor.
ASCII: $!ID0133
Hex: 24 21 49 44 30 31 33 33 0D 0A
$! is header, ID is command, 01 is sensor id, 33 is end.
Reply: From sensor to device
ASCII: *SID01OKOKOK39 or *SID01NONONO42
Hex: 2A 53 49 44 30 31 4F 4B 4F 4B 4F 4B 33 39 0D 0A
or 2A 53 49 44 30 31 4E 4F 4E 4F 4E 4F 34 32 0D 0A
* is header, SID is reply command. 01 is sensor id. OKOKOK means succeed. NONONO means failed.
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.
9.1 Naming Rules
9.2 Length Clarification
| Standard export packing |
Warranty
We warrants this quality product to be free of defects in material 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.
If you interested in our products,please contact us:
Looking forward to cooperating with you