CN207907999U - A kind of fluid level transmitter with output switch parameter - Google PatentsA kind of fluid level transmitter with output switch parameter Download PDF
- Publication number
- CN207907999U CN207907999U CN201721598657.8U CN201721598657U CN207907999U CN 207907999 U CN207907999 U CN 207907999U CN 201721598657 U CN201721598657 U CN 201721598657U CN 207907999 U CN207907999 U CN 207907999U
- Prior art keywords
- fluid level
- level transmitter
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- 239000012530 fluid Substances 0.000 title claims abstract description 33
- 230000001702 transmitter Effects 0.000 title claims abstract description 29
- 238000010276 construction Methods 0.000 claims abstract description 10
- 239000000523 sample Substances 0.000 claims description 33
- 238000007789 sealing Methods 0.000 claims description 3
- 239000007788 liquid Substances 0.000 abstract description 24
- 229910004682 ON-OFF Inorganic materials 0.000 abstract description 5
- 230000003068 static Effects 0.000 abstract description 4
- 238000005265 energy consumption Methods 0.000 abstract description 2
- 238000005259 measurement Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 230000005611 electricity Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000001681 protective Effects 0.000 description 1
- 230000002000 scavenging Effects 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
A kind of fluid level transmitter with output switch parameter provided by the utility model, including shell, air guide cable, pressure sensor and with the circuit device of switching value, wherein, circuit device is mounted on the upper end of the hollow-core construction of shell, pressure sensor is mounted on the lower end of shell hollow-core construction, and pressure sensor is electrically connected with circuit device；One end of air guide cable is electrically connected with circuit device；The other end is placed in hull outside；The utility model measures the static pressure force value of liquid level using pressure sensor, the static pressure force value of liquid level is transferred to circuit device and is converted into electric signal by the way that pressure sensor is arranged in the bottom of fluid level transmitter；When measuring the medium that position does not measure, power-off protection is played the role of to circuit device by on-off model；After power-off protection, meet the requirement of low energy consumption operating mode, saves the energy, reduce cost.
The utility model belongs to fluid level transmitter field, is related to a kind of fluid level transmitter with output switch parameter.
Fluid level transmitter is as level gauging display instrument due to spies such as easy for installation, high certainty of measurement, service life length Point has been widely used in engineer application.Fluid level transmitter is the height according to the fluid pressure value and liquid level surveyed at just Fluid pressure force value is converted into electric signal by the principle of ratio, by temperature-compensating and it is linear correct, be converted into standard electric current or Voltage signal, it is established that the Linear Comparison relationship of output electric signal and liquid level depth realizes the measurement to liquid depth.Liquid level becomes The measurement and control for sending device to be widely used in the liquid levels in fields such as environmental protection, water conservancy, power plant, city water supply and sewage, hydrologic exploration.
However in industry spot, it is frequently encountered special requirement, for example be less than fluid level transmitter when measuring liquid level When measured value, general fluid level transmitter alarm free and power down function can not play a protective role；It is wanted when site requirement liquid level reaches Ask depth to carry out energization measurement, less than requirement depth when powered off, when to meet low-power consumption requirement, general liquid level Transmitter also cannot be satisfied this requirement.
The purpose of this utility model is to provide a kind of fluid level transmitters with output switch parameter, solve existing liquid Position transmitter, cannot be to fluid level transmitter when being less than the measurement request of fluid level transmitter due to measuring liquid level when measuring The problem of being powered off, and then fluid level transmitter can not be protected.
In order to achieve the above object, the technical solution adopted in the utility model is：
A kind of fluid level transmitter with output switch parameter provided by the utility model, including shell, air guide cable, pressure Sensor and the circuit device with switching value for fluid pressure force value to be converted into electric signal, wherein circuit device is pacified Mounted in the upper end of the hollow-core construction of shell, pressure sensor is mounted on the lower end of shell hollow-core construction, and pressure sensor and electricity Road device electrical connection；One end of air guide cable is electrically connected with circuit device；The other end is placed in hull outside.
Preferably, circuit device includes the circuit board with relay, and circuit board is mounted on the upper end of shell hollow-core construction, It is electrically connected with probe and lower probe simultaneously, upper probe and lower probe are mounted on the lateral wall of shell.
Preferably, upper probe and lower probe are placed in the upper end of pressure sensor.
Preferably, the bottom end of shell is equipped with water guide head, and the aperture for draining and being vented is offered on water guide head.
Preferably, pass through wire bushing lock sealing between air guide cable and shell.
Preferably, shell includes upper shell and lower housing, and upper shell and lower housing are welded to connect.
Compared with prior art, the utility model has the beneficial effects that：
A kind of fluid level transmitter with switching value provided by the utility model, by being arranged in the bottom of fluid level transmitter Pressure sensor, the static pressure force value of liquid level is measured using pressure sensor, and the static pressure force value of liquid level is transferred to circuit device conversion At electric signal；When measuring the medium that position does not measure, power-off protection is played the role of to circuit device by on-off model； After power-off protection, meet the requirement of low energy consumption operating mode, saves the energy, reduce cost.
Further, for shell dress there are two probe, upper probe and lower probe while after submerging conducting medium, conducting medium will Upper probe and the conducting of lower probe form a circuit, actuating of relay response, output one are controlled after the board receiver electric signal A on-off model.
Description of the drawings
Fig. 1 be the utility model is related to fluid level transmitter structural schematic diagram；
Wherein, 1, air guide cable 2, upper shell 3, circuit board 41, upper probe 42, lower probe 5, pressure sensor 6, Water guide head 7, lower housing 8, conducting wire 9, wire bushing.
Specific implementation mode
The utility model is further described below in conjunction with the accompanying drawings.
As shown in Figure 1, a kind of fluid level transmitter with output switch parameter provided by the utility model.Fluid level transmitter is According to the fluid pressure value the surveyed principle directly proportional to the height of liquid level, fluid pressure force value is converted into electric signal, is passed through Temperature-compensating and linear amendment, are converted into the current or voltage signal of standard, it is established that the line of output electric signal and liquid level depth Property relativity, realize measurement to liquid depth；Probe is the electric conductivity using liquid, and circuit is to electric signal after probe conducting It is handled, exports an on-off model.
The fluid level transmitter includes air guide cable 1, upper shell 2, circuit board 3, upper probe 41, lower probe 42, pressure sensing Device 5, water guide head 6, lower housing 7, conducting wire 8 and wire bushing 9, wherein the lower end of upper shell 2 and the upper end of lower housing 7 are welded to connect, It is communicated between upper shell 2 and lower housing 7；The upper end of upper shell 2 is equipped with opening；The lower end of lower housing 7 is equipped with water guide head 6.
It is electrically connected with relay on circuit board 3, is mounted in the hollow-core construction of upper shell 2；Pressure sensor 5 is mounted on down In the hollow-core construction of shell 7, meanwhile, upper probe 41 and lower probe 42 are arranged on the side wall of lower housing 7, and are placed in pressure sensing The top of device 5, meanwhile, pressure sensor 5, upper probe 41 and lower probe 42 are electrically connected by conducting wire 8 with circuit board 3.
Air guide cable 1 is electrically connected on circuit board 3, air guide cable 1 passes through the upper end opening of upper shell 2 to be placed in upper shell 2 Outside, meanwhile, pass through 9 lock sealing of wire bushing between air guide cable 1 and upper shell 2.
Air guide cable 1 is the cable with gas-guide tube, and cable passes the output signal of circuit board 3, and gas-guide tube will 3 cavity of upper shell and external atmosphere pressure conducting.
The effect of circuit board 3 is handled electric signal, and normalized current and voltage signal are converted into.
The effect of upper probe 41 and lower probe 42 is to be conductively connected and shell 2 is fixed by glass sintering mode, and play Insulated enclosure acts on.
The effect of pressure sensor 5 is that the pressure value in liquid is converted into electric signal.
The effect of water guide head 6 is protection pressure sensor 5, and front end and surrounding are provided with aperture, play drainage and scavenging action.
At work, which is placed in liquid, liquid enters lower housing 7 by the aperture on water guide head 6 Lower end, touch the pressure-sensitive diaphragm of pressure sensor 5, pressure sensor 5 is exported electric signal by after the pressure of liquid, passes through Conducting wire 8 passes to circuit board 3, after circuit board 3 handles electric signal, is converted into the electric current or voltage signal of standard, leads to It crosses air guide cable 1 to pass to away, and 2 inner chamber body of upper shell and outside air is connected by the gas-guide tube of air guide cable 1.
Meanwhile when upper probe 41 and lower probe 42 submerge in liquid simultaneously, upper probe 41 and lower probe 42 are connected liquid, A circuit is formed, meanwhile, relay is controlled after the board receiver electric signal and carries out action response, exports a switching value letter Number；Realize the break-make Electricity Functional of circuit board 3；And export on-off model and connect with external electrical, carry out other controls.
1. a kind of fluid level transmitter with output switch parameter, it is characterised in that：Including shell, air guide cable (1), pressure sensing Device (5) and the circuit device with switching value for fluid pressure force value to be converted into electric signal, wherein circuit device is installed In the upper end of the hollow-core construction of shell, pressure sensor (5) is mounted on the lower end of shell hollow-core construction, and pressure sensor (5) It is electrically connected with circuit device；One end of air guide cable (1) is electrically connected with circuit device；The other end is placed in hull outside.
2. a kind of fluid level transmitter with output switch parameter according to claim 1, it is characterised in that：Circuit device packet The circuit board (3) with relay is included, circuit board (3) is mounted on the upper end of shell hollow-core construction, while being electrically connected with probe (41) it is mounted on the lateral wall of shell with lower probe (42), upper probe (41) and lower probe (42).
3. a kind of fluid level transmitter with output switch parameter according to claim 2, it is characterised in that：Upper probe (41) The upper end of pressure sensor (5) is placed in lower probe (42).
4. a kind of fluid level transmitter with output switch parameter according to claim 1, it is characterised in that：The bottom end of shell Water guide head (6) is installed, the aperture for draining and being vented is offered on water guide head (6).
5. a kind of fluid level transmitter with output switch parameter according to claim 1, it is characterised in that：Air guide cable (1) pass through wire bushing (9) lock sealing between shell.
6. according to a kind of fluid level transmitter with output switch parameter of claim 1-5 any one of them, it is characterised in that：Shell Body includes upper shell (2) and lower housing (7), and upper shell (2) and lower housing (7) are welded to connect.
Priority Applications (2)
|Application Number||Priority Date||Filing Date||Title|
|Publication Number||Publication Date|
|CN207907999U true CN207907999U (en)||2018-09-25|
Family Applications (1)
|Application Number||Title||Priority Date||Filing Date|
|CN201721598657.8U Active CN207907999U (en)||2017-10-30||2017-11-20||A kind of fluid level transmitter with output switch parameter|
Country Status (1)
|CN (1)||CN207907999U (en)|
- 2017-11-20 CN CN201721598657.8U patent/CN207907999U/en active Active
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