CN203259491U - Pure water testing pen - Google Patents
Pure water testing pen Download PDFInfo
- Publication number
- CN203259491U CN203259491U CN 201320314697 CN201320314697U CN203259491U CN 203259491 U CN203259491 U CN 203259491U CN 201320314697 CN201320314697 CN 201320314697 CN 201320314697 U CN201320314697 U CN 201320314697U CN 203259491 U CN203259491 U CN 203259491U
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- probe
- pure water
- afterbody
- water test
- test pen
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Abstract
The utility model relates to a pure water testing pen which comprises a pen body. A circuit board is arranged in the pen body. A signal prompter is connected into a control circuit on the circuit board. The head portion of the pen body is a pen tip. A first probe and a second probe are arranged at the pen tip in a penetrating mode. A distance exists between the first probe and the second probe. One ends of the first probe and the second probe penetrate out of the pen tip and the other ends of the first probe and the second probe are connected into the control circuit respectively and control on-off of the signal prompter. According to the pure water testing pen, a complicated testing instrument is not needed, only a simple structure is needed to judge the degree of purity of water, cost is low and a user can conveniently use the pure water testing pen.
Description
Technical field
The utility model relates to a kind of Simplified Test Equipment that is used for test water purity.
Background technology
Along with common people strengthen drinking healthy water consciousness, increasing water purifier enters family, enterprise and public place, and the core component of water purifier is filter core, by filter core with the contaminant filter in the water, along with the lengthening of service time, the filter core state that reaches capacity needs to change.Apparatus for producing pure water particularly, the interior RO permeable membrane that arranges, after the RO permeable membrane was saturated, produced pure water or water purification had not reached national drinking pure water standard, but the naked eyes None-identified must be judged by testing tool.
In the prior art, have special testing tool to judge the purity of water, but structure is all comparatively complicated, cost is higher, operate cumbersomely, is not suitable for the average family use.
Because contain various ions in the water, ion can conduct electricity, the size of water electric conductivity is relevant with conductivity, conductivity reflect salt content in the water how much, be an important indicator of water purity.The purity that is water is higher, and conductivity is less.Conductivity is the inverse of resistivity, and resistivity is the resistance of unit area, unit length.
Summary of the invention
In order to overcome the above-mentioned deficiency of prior art, the utility model provides a kind of cost lower, pure water test pen easy to detect.
The technical scheme in the invention for solving the technical problem is:
A kind of pure water test pen, comprise a body, be provided with circuit board in described the body, control circuit on the described circuit board has access to the signal prompt device, the head of described body is nib, and described nib place is equipped with the first probe and the second probe, is provided with spacing between described the first probe and described the second probe, one end of described the first probe and the second probe stretches out described nib, and whether the other end accesses respectively described control circuit and control described signal prompt device and work.
As preferably, control circuit is transistor amplifier, the base stage of triode connects a bias pressure circuit, and described the first probe and the access of the second probe are between the base stage and collector of triode, and described signal prompt device is connected to the collector of described triode.
As preferably, the signal prompt device is a light emitting diode.
As preferably, the signal prompt device is a hummer.
As preferably, light emitting diode is arranged on the afterbody of a body, and the afterbody lid of a body is established at the bottom of the shell, and in described light emitting diode was fixed at the bottom of the described shell, the afterbody of described body or a body whole body were arranged to transparence.
As preferably, hummer is arranged on the afterbody of a body, and the afterbody lid of described body is established at the bottom of the shell, and the afterbody of described body also is provided with through hole.
As preferably, nib place plug is provided with sealing-plug, and described the first probe and the second probe wear described sealing-plug.
As preferably, the head of a body is arranged with the pen cap.
The first probe and second probe of test pen are stretched into respectively in water, jointly form the on-off circuit whether a control signal prompting device works with the control circuit in the test pen, when namely the resistance between the first probe and the second probe is greater than certain setting value, signal prompt device cisco unity malfunction is pointed out, show that water is qualified, when the resistance between the first probe and the second probe was less than or equal to this setting value, the normal operation of signal prompt device was pointed out, and shows that then water is defective.Control circuit adopts transistor amplifier in the utility model, the base stage of triode connects a bias pressure circuit, the first probe and the access of the second probe are between base stage and collector, the access of signal prompt device is on collector, make the signal prompt device normal operation that is connected to collector, then the base stage of triode need to have certain voltage or electric current.Parameters in the circuit rationally is set, and the area of probe, spacing, then can sets this critical value R ', and be according to this critical value R ' and judge the hydration acceptance or rejection.When the purity of water is higher, electric conductivity between two probes is not enough, and namely resistance is larger, when R ' time, then the dividing potential drop between base stage and the emitter is less, and base current is less, triode is operated in cut-off state, and then the signal prompt device does not send signal, shows the hydration lattice.When the purity of water is lower, then the resistance between two probes is less, when＜=R ' time, then the electric resistance partial pressure between base stage and the emitter increases, and then base current is enough to make triode to be operated in magnifying state, and then the signal prompt device sends signal, shows that water is defective.Generally speaking, pure electrical conductivity of water is 0-10 μ S/cm, then can be according to the numerical value of certain point of conductivity, and for example conductivity is 10 μ S/cm, comes parameters in the initialization circuit and probe area, spacing.In the utility model, the signal prompt device can be light emitting diode or hummer, and light emitting diode can also be fixed on the shell bottom, the afterbody of body or a body is set to transparence, the convenient observation, when hummer was set, the afterbody of a body can arrange through hole and make things convenient for transmission sound.This test pen uses in room temperature, and water is generally stationary water.
The beneficial effects of the utility model are: the utility model does not need complicated detecting instrument, only needs the degree of purity of simple structure decision water, and cost is lower, and is convenient for users.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the electrical block diagram of embodiment one.
Embodiment
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.
Embodiment one: as shown in Figure 1, a kind of pure water test pen, comprise a body 5, be provided with circuit board 4 in described the body 5, the head of a body is nib 3, and written 3 places plug is provided with sealing-plug 2, sealing-plug 2 places are equipped with the first probe 9 and the second probe 8, be provided with spacing between the first probe and the second probe, an end of the first probe 9 and the second probe 8 stretches out nib 3, the control circuit on the other end difference place in circuit plate 4.As shown in Figure 2, control circuit is a triode total radio amplifier, namely adopted mimic channel to distinguish in digital circuit of the prior art, the bias pressure circuit that the base stage connection one of triode Q is made of R1, R2, the first probe 9 and 8 accesses of the second probe are between the base stage and collector of triode Q, light emitting diode 6 is connected to the collector of triode Q, and namely whether the circuit conditions between the first probe and the second probe can be controlled light emitting diode and work.The head of body is arranged with the pen cap 1, under operating position not, can protect the first probe and the second probe.Light emitting diode 6 is arranged on the afterbody of a body 5, and the afterbody of body lid establishes at the bottom of the shell 7, and described light emitting diode 6 is fixed at the bottom of the described shell in 7, prevents that it is arbitrarily mobile, and the afterbody of a body or a body whole body are arranged to transparence, the convenient observation.
This test pen uses in the room temperature situation, and namely under the normal temperature state, water is generally stationary water.Control circuit of the present utility model has adopted the higher digital circuit of complex structure cost in mimic channel difference and the prior art.Control circuit adopts transistor amplifier in the utility model, the base stage of triode Q connects a bias pressure circuit, the first probe 9 and 8 accesses of the second probe are between base stage and collector, light emitting diode 6 accesses are on collector, make light emitting diode 6 normal operations that are connected to collector, then the base stage of triode Q need to have certain voltage or electric current.Parameters in the circuit rationally is set, and the spacing of probe, then can set this critical value R ', and be judgement hydration acceptance or rejection according to this critical value R '.During use, the first probe and second probe of test pen are stretched in water, when the purity of water is higher, electric conductivity between two probes is not enough, and namely resistance is larger, when resistance〉R ' time, then the dividing potential drop between base stage and the emitter is less, and base current is less, and triode Q is operated in cut-off state, then light emitting diode 6 does not work, and shows the hydration lattice.When the purity of water is lower, then the resistance between two probes is less, and when resistance＜=R ', then the electric resistance partial pressure between base stage and the emitter is larger, and then base current is enough to make triode Q to be operated in magnifying state, and then light emitting diode 6 is bright, shows that water is defective.Generally speaking, pure electrical conductivity of water is 0-10 μ S/cm, then according to the numerical value of certain point of conductivity parameters and the probe area, spacing in can initialization circuit.For example, if when setting the conductivityσ greater than 10 μ S/cm then defective, the critical point of conductivity is that 10 μ S/cm are 10(m Ω)-1, electricalresistivityρ=1/ σ, resistance R '=ρ L/S, setting probe spacing L is 1cm, the sectional area of probe is that S is 2cm * 0.5cm, then can calculate resistance R ' be 10 Ω according to the formula of front, namely the critical resistance value between the first probe and the second probe is 10 Ω, then can control transistor amplifier as long as R1, R2 rationally are set.
Embodiment two: light emitting diode can be substituted by hummer and point out, and a body is not arranged to transparence, but at the afterbody of a body through hole is set, and makes things convenient for transmission sound out, and other are identical with embodiment one.
Claims (8)
1. pure water test pen, comprise a body, it is characterized in that: be provided with circuit board in described the body, control circuit on the described circuit board has access to the signal prompt device, the head of described body is nib, described nib place is equipped with the first probe and the second probe, be provided with spacing between described the first probe and described the second probe, one end of described the first probe and the second probe stretches out described nib, and whether the other end accesses respectively described control circuit and control described signal prompt device and work.
2. a kind of pure water test pen according to claim 1, it is characterized in that: described control circuit is transistor amplifier, the base stage of triode connects a bias pressure circuit, described the first probe and the access of the second probe are between the base stage and collector of triode, and described signal prompt device is connected to the collector of described triode.
3. a kind of pure water test pen according to claim 2, it is characterized in that: described signal prompt device is a light emitting diode.
4. a kind of pure water test pen according to claim 2, it is characterized in that: described signal prompt device is a hummer.
5. a kind of pure water test pen according to claim 3, it is characterized in that: described light emitting diode is arranged on the afterbody of a body, the afterbody lid of body is established at the bottom of the shell, and in described light emitting diode was fixed at the bottom of the described shell, the afterbody of described body or a body whole body were arranged to transparence.
6. a kind of pure water test pen according to claim 4, it is characterized in that: described hummer is arranged on the afterbody of a body, and the afterbody lid of described body is established at the bottom of the shell, and the afterbody of described body also is provided with through hole.
7. according to claim 1 and 2 or 3 or 4 or 5 or 6 described a kind of pure water test pens, it is characterized in that: described nib place plug is provided with sealing-plug, and described the first probe and the second probe wear described sealing-plug.
8. a kind of pure water test pen according to claim 7, it is characterized in that: the head of described body is arranged with the pen cap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320314697 CN203259491U (en) | 2013-06-03 | 2013-06-03 | Pure water testing pen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320314697 CN203259491U (en) | 2013-06-03 | 2013-06-03 | Pure water testing pen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203259491U true CN203259491U (en) | 2013-10-30 |
Family
ID=49472043
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320314697 Expired - Fee Related CN203259491U (en) | 2013-06-03 | 2013-06-03 | Pure water testing pen |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203259491U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107468216A (en) * | 2017-09-26 | 2017-12-15 | 江苏精微特电子股份有限公司 | Moisture of skin measuring circuit and moisture of skin measuring instrument |
-
2013
- 2013-06-03 CN CN 201320314697 patent/CN203259491U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107468216A (en) * | 2017-09-26 | 2017-12-15 | 江苏精微特电子股份有限公司 | Moisture of skin measuring circuit and moisture of skin measuring instrument |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131030 Termination date: 20170603 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |