Ultrasonic tank water level sensor RS232/485 4-20mA Output Signal
low cost price ultrasonic liquid level meter gauge
1. Parameter
General specifications
| Sensing range | 100... 1000 mm |
| Adjustment range | |
| Unusable area | 0 ... 100 mm |
| Standard target plate | 100 mm x 100 mm |
| Transducer frequency | approx.220 kHz |
| Response delay | approx. 50 ms |
Indicators/operating means
| LED blue | power-on |
LED yellow | indication of the switching state flashing: program function object detected |
LED red | permanently red: Error Red,flashing:program function,object not
detected |
Electrical specifications
| Operating voltage UB | 15 ... 30 V DC , ripple 10 %SS |
| No-load supply current I0 | ≤ 45 mA |
Input
| Input type | 1 TEACH-IN input |
operating range A1: -UB ... +1 V, operating range A2: +6 V ... +UB |
| input impedance: > 4.7 kΩ ; TEACH-IN program pulse: ≥ 1 s |
Output
| Output type | 1 switch output E4, NPN NO/NC,programmable |
| Rated operating current Ie | 200 mA , short-circuit/overload protected |
| Default setting | Switching point A1:70mm Switching point A2: 800mm |
| Voltage drop | ≤ 2.5 V |
| Repeat accuracy | ≤1 % |
| Switching frequency f | ≤ 13 Hz |
| Range hysteresis H | 2 % of the set operating distance |
| Temperature influence | ±1.5% of full-scale value |
Ambient conditions
| Ambient temperature | -25…70℃(248...343K) |
| Storage temperature | -40…85℃(233...358K) |
Mechanical specifications
| Connection | V1 connector(M12×1),4-pin |
| Protection degree | IP67 |
| Material Housing | brass, nickel-plated |
| Transducer | epoxy resin/hollow glass sphere mixture; foam polyurethane, cover PBT |
2. Dimensions
3. Electronic interface and signals definition
4. Description of Sensor Functions
Adjust the paramater
The ultrasonic sensor is equipped with a switch output featuring
two teachable switching points. To set these points, the supply
voltage, either -UB or +UB, needs to be applied to the TEACH-IN
input. During this process, LEDs provide feedback, indicating
whether the sensor has successfully recognized the target.
Switching point A1 is configured using -UB, while A2 is set with
+UB. The sensor offers the flexibility of eight different output
functions.
It's important to note that the switching point and setting
distance can only be adjusted after the power is turned on. The
internal clock ensures that changes cannot be made after 5 minutes
of power-on time. If there's a need to modify the switching point,
the user must set the desired distance after restarting the power.
This ensures a clear and controlled adjustment process for the
sensor's configuration.
TEACH-IN window mode, normally-open function
- Set target to near switching point
- TEACH-IN switching point A1 with - UB
- Set target to far switching point
- TEACH-IN switching point A2 with + UB
TEACH-IN window mode, normally-closed function
- Set target to far switching point
- TEACH-IN switching point A2 with - UB
- Set target to near switching point
- TEACH-IN switching point A1 with + UB
TEACH-IN switching point, normally-open function
- Set target to near switching point
- TEACH-IN switching point A1 with - UB
- Cover sensor with hand or remove all objects
from sensing range
-TEACH-IN switching point A2 with + UB
TEACH-IN switching point, normally-closed function
- Cover sensor with hand or remove all
objects from sensing range
- TEACH-IN switching point A2 with - UB
- Set target to near switching point
- TEACH-IN switching point A1 with + UB
TEAC-IN large hysteresis interval, normally-open mode
- Set target to near switching point
- TEACH-IN switching point A1 with + UB
- Set target to far switching point
- TEACH-IN switching point A2 with - UB
TEAC-IN large hysteresis interval, normally-closed mode
- Set target to far switching point
- TEACH-IN switching point A2 with + UB
- Set target to near switching point
- TEACH-IN switching point A1 with - UB
TEACH-IN detection of objects presence normally open mode
- Cover sensor with hand or remove all objects from
sensing range
- TEACH-IN switching point A2 with - UB
- Cover sensor with hand or remove all objects from
sensing range
- TEACH-IN switching point A2 with + UB
TEACH-IN detection of objects presence normally closed mode
- Cover sensor with hand or remove all objects from sensing range
- TEACH-IN switching point A2 with +UB
- Cover sensor with hand or remove all objects from sensing range
- TEACH-IN switching point A2 with -UB
Default setting of switching point
A1=blind range,A2=nominal distance
| LED displays |
| Displays in dependence on operating mode | Red LED | Yellow LED |
TEACH-IN switching point Object detected No object detected Object uncertain(TEACH-IN invalid) |
off flashes On |
flashes off off |
| Normal operation | off | Switching state |
| Fault | on | Previous state |
5. Installation conditions
If the sensor is installed at the environment temperature fall
below 0℃,It should do well on the protective measures. In case of
direct mounting of the sensor in a through hole using the steel
nuts, it has to be fixed at the middle of the housing thread.
