CN2886517Y - Portable multi-channel flow instrument check meter - Google Patents
Portable multi-channel flow instrument check meter Download PDFInfo
- Publication number
- CN2886517Y CN2886517Y CN 200620040149 CN200620040149U CN2886517Y CN 2886517 Y CN2886517 Y CN 2886517Y CN 200620040149 CN200620040149 CN 200620040149 CN 200620040149 U CN200620040149 U CN 200620040149U CN 2886517 Y CN2886517 Y CN 2886517Y
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- China
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- signal
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- voltage
- temperature
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- Expired - Lifetime
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Abstract
The utility model relates to an instrument checking apparatus, especially relates to a portable multiple-lead flow instrument tester. The problem of the various apparatuses needed when routine flow calculating instrument checks, complexity of connecting the wire, and being inconvenient to operate are solved. The technical project that the portable multiple-lead flow instrument tester comprises a checking loop, a pressure checking loop, a temperature checking loop and an instrument outlet detecting loop is provided, wherein the reversal overlapping of the wave band changing switch detected by voltage can respectively provide the folding of the four loops, and the wave band changing switch is connected with the standard voltmeter through the external electric voltage. The utility model is mainly applicable to check the intelligent flow calculating instrument with temperature and pressure compensation.
Description
Technical field:
The utility model relates to a kind of instrument check equipment, particularly a kind of portable multi-channel flow instrument tester.
Background technology:
In verification band temperature, when pressure compensated intelligent flow calculates instrument, needed conventional equipment is many.Need three resistance boxes respectively as the fictitious load of differential pressure, temperature, pressure three paths, need three 250 Ω current/voltage-converted resistance, need three reometers (or voltage table) that three road checking signals are carried out fictitious load simultaneously and change.If only use a reometer (or voltage table), then need in three paths, frequently to insert back and forth and detect, operation is inconvenience very, and the process wiring is also more loaded down with trivial details.If carry out instrument check at the scene, equipment carries very inconvenience.Chinese patent 00224357.1 has been introduced a kind of instrument check instrument that has signal generation and signal measurement and have Presentation Function.Major function is to sent one road voltage (or electric current or resistance or frequency) signal by the school instrument, go back energy measurement one road voltage (or electric current or resistance or frequency) signal simultaneously, transmission and measuring-signal show on two amount digital display gauge outfits, are used for the hand-held process instrument tester of production scene verification instrument and meter for automation.Its defective is that price is higher, and this tester can't normal verification band temperature, pressure compensated intelligent flow calculates instrument, also needs to be furnished with other equipment and just can finish the calibration process.
Summary of the invention: the purpose of this utility model provides a kind of portable multi-channel flow instrument tester that utilizes an equipment just can finish band temperature, pressure compensated intelligent flow calculating instrument check.The utility model technical issues that need to address are: it is various to solve conventional flow calculating instrument table verification equipment needed thereby, and wiring is loaded down with trivial details, problems such as operation inconvenience.
The utility model tester main thought is to being provided three road variable resistor signals, the load variations of coming analogue difference pressure transmitter, pressure unit, temperature transmitter by school band temperature, pressure compensated intelligent flow calculating instrument.Go back energy measurement one tunnel is calculated instrument by the school intelligent flow output voltage (or electric current) signal simultaneously, and with the change-detection amount (voltage or electric current) of three tunnel simulating signals by switch respectively by test side output, show respectively by external normal voltage (or electric current) table again.This tester can also be realized the verification of one-channel signal multi-channel synchronous.Be used for production scene or instrument check chamber verification intelligent flow and calculate instrument.
The technical solution of the utility model is: portable multi-channel flow instrument tester, comprise differential pressure verification loop, pressure checking loop, temperature verification loop and, can realize the folding in four groups of loops respectively by the commutation overlap joint of band switch by school instrument output loop.Differential pressure verification loop is in series with differential pressure signal coarse adjustment potentiometer, differential pressure signal current detecting hole, differential pressure signal fine tuning potentiometer, differential pressure signal current/voltage conversion of signals resistance successively, and the differential pressure voltage signal is then by voltage detecting end U
1By switch via test side U
5On external standard voltmeter, show; The pressure checking loop is in series with pressure signal coarse adjustment potentiometer, pressure signal current detecting hole, pressure signal fine tuning potentiometer, pressure signal current/voltage conversion of signals resistance successively, and the pressure voltage signal is then by voltage detecting end U
2By switch via test side U
5On external standard voltmeter, show; Temperature verification loop is in series with temperature signal coarse adjustment potentiometer, temperature signal current detecting hole, temperature signal fine tuning potentiometer, temperature signal current/voltage conversion of signals resistance successively, and temperature voltage signal is then by voltage detecting end U
3By switch via test side U
5On external standard voltmeter, show, also be connected to a resistance signal output dip switch in the loop; Be in series with current output signal by school instrument output loop and detect hole and current/voltage conversion of signals resistance, by school instrument voltage output signal by voltage detecting end U
4By switch via test side U
5On external standard voltmeter, show.
The beneficial effects of the utility model are: the utility model is to make for verification band temperature, pressure compensated flow rate calculation instrument multiple signals input characteristics specialized designs.Tester has been realized the variation of differential pressure transmitter, pressure unit, temperature transmitter analog load signals in the flow rate calculation instrument respectively by the potentiometer group, waver K1 has realized the change detection of three paths voltage signals and one tunnel instrument output voltage signal, the current detecting hole can be detected three paths and one tunnel instrument output current signal respectively, makes current detecting one table four-function.And when some flow rate calculation instrument needs directly to import the PT100 thermal resistance signal, then can realize easily providing resistance signal to the flow rate calculation instrument by the temperature signal potentiometer by the switching of K switch 2.Simultaneously, the utility model tester also can verification calculate other instrument of instrument and same type with the single channel differential pressure signal intelligent flow of compensation.Can also realize one-channel signal multiplexer channel synchronization check, practical, convenient, fast.The utility model instrument check instrument reasonable in design can also be placed instrument commonly used and instrument wiring in the tester box, put on the utility model instrument check instrument during calibration especially at the scene, can conveniently finish the calibration process.
Description of drawings:
Fig. 1 is the utility model theory structure synoptic diagram:
W
11-differential pressure signal coarse adjustment potentiometer, W
21-pressure signal coarse adjustment potentiometer, W
31-temperature signal coarse adjustment potentiometer, W
12-differential pressure signal fine tuning potentiometer, W
22-pressure signal fine tuning potentiometer, W
32-temperature signal fine tuning potentiometer, CK
1-differential pressure signal current detecting hole, CK
2-pressure signal current detecting hole, CK
3-temperature signal current detecting hole, CK
4-by instrument output signal current detecting hole, school, R
1-4-differential pressure, pressure, temperature, by school instrument output current/voltage signal transfer resistance, U
1-differential pressure signal voltage detecting end, U
2-pressure signal voltage detecting end, U
3-temperature signal voltage detecting end, U
4-by instrument output voltage signal test side, school, U
5-external voltage table terminals, K
1-voltage detecting band switch, K
2-resistance signal output dip switch.12-is calculated instrument, the external standard voltmeter of 13-by the school intelligent flow.
Circuit elements device detail list:
| Code name | The title specification | Quantity |
| W 11 W 21 W 31 | WX110 individual pen WW POT | 3 |
| W 12 W 22 W 32 | The accurate multi-circle wirewound potentiator of WXD3-13 | 3 |
| CK 1 CK 2 CK 3 CK 4 | The CKX2-3.5 microphone socket | 4 |
| R 1 R 2 R 3 R 4 | RX-70 250 Ω precision resistances | 4 |
| K 1 | KCT porcelain waver | 1 |
| K 2 | The small-sized toggle switch of KN-01 | 1 |
Fig. 2 is the utility model instrument face plate arrangenent diagram:
1-differential pressure signal end, 2-pressure signal end, 3-temperature signal end, 4-coarse adjustment potentiometer, 5-current detecting socket, 6-fine tuning potentiometer, 7-voltage detecting end, 8-is detected the hole by the output of school instrument electric current, and 9-is by school instrument voltage output test side, 10-resistance signal output dip switch, 11-voltage detecting band switch.
Embodiment: referring to Fig. 1, a kind of utility model instrument check instrument: by differential pressure, pressure, three groups of potentiometer (W of temperature
11, W
21, W
31, W
12, W
22, W
32) realize that respectively the simulating signal of differential pressure, pressure, temperature transmitter changes, three groups of loops are respectively: calibrated meter differential pressure signal anode--W
11--CK
1--W
12--R
1--calibrated meter differential pressure signal negative terminal, the differential pressure voltage signal is by U
1Test side output; Calibrated meter pressure signal anode--W
21--CK
2--W
22--R
2--calibrated meter pressure signal negative terminal, the pressure voltage signal is by U
2Test side output; Calibrated meter temperature signal anode--W
31--CK
3--W
32--R
3--calibrated meter temperature signal negative terminal, temperature voltage signal is by U
3Test side output; Calibrated meter output signal anode--CK
4--R
4--calibrated meter output signal anode, the calibrated meter output voltage signal is by U
4Test side output.Three groups of fictitious load potentiometers and four groups of current detecting hole CK
1-4, four groups of current/voltage-converted resistance R
1-4, voltage detecting band switch K
1, resistance signal output dip switch K
2, pilot process connects lead and rationally combined dexterously together, reduced the quantity of calibration equipment and loaded down with trivial details verification wiring, makes checking procedure simple and efficient.On three groups of potentiometers, realize its function as the resistance box of three paths loads during former calibration, three reometers during former calibration are then realized a table four-function easily by the current detecting hole, three groups of voltage detection signals during former calibration are calculated the output voltage signal of instrument 12 by port U by the school intelligent flow simultaneously then in the realization of voltage detecting end by the easy switching of waver
4Also can obtain, make external standard voltmeter 13 1 table four-functions by the switching of waver.Do not need temperature transmitter and work as some flow rate calculation instrument, when directly importing thermal resistance signal, then can pass through change-over switch K2 again, provide corresponding resistance value, realize giving the flow rate calculation instrument that an ohm signal is provided easily by temperature potentiometer group.
With reference to Fig. 2, the instrument check instrument, it is a box-shaped box body, radially be provided with differential pressure signal end 1 in its panel one side, pressure signal end 2 and temperature signal end 3, be respectively equipped with the coarse adjustment potentiometer 4 corresponding on the signal end next door with signal end, be respectively equipped with and the corresponding current detecting socket 5 of coarse adjustment potentiometer on coarse adjustment potentiometer next door, at the other resistance signal output dip switch 10 that is provided with of temperature signal end current detecting socket, at the other fine tuning potentiometer 6, external voltage table terminals 7 of being provided with of current detecting socket, detected hole 8 by school instrument output current, by instrument output voltage test side, school 9, voltage detecting band switch 11 is radially arranged at the opposite side of panel.
Claims (6)
1, portable multi-channel flow instrument tester, it is characterized in that comprising differential pressure verification loop, pressure checking loop, temperature verification loop and instrument output voltage loop, commutation overlap joint by band switch can be realized the folding in four groups of loops respectively, and band switch connects voltage table by external voltage table port.
2, portable multi-channel flow instrument tester according to claim 1, it is characterized in that described differential pressure verification loop is in series with differential pressure signal coarse adjustment potentiometer, differential pressure signal current detecting hole, differential pressure signal fine tuning potentiometer successively, connect differential pressure signal voltage detecting end then, be in series with differential pressure signal current/voltage conversion of signals resistance in the loop.
3, portable multi-channel flow instrument tester according to claim 1, it is characterized in that described pressure checking loop is in series with pressure signal coarse adjustment potentiometer, pressure signal current detecting hole, pressure signal fine tuning potentiometer successively, connect pressure signal voltage detecting end then, be in series with pressure signal current/voltage conversion of signals resistance in the loop.
4, portable multi-channel flow instrument tester according to claim 1, it is characterized in that described temperature verification loop is in series with temperature signal coarse adjustment potentiometer, temperature signal current detecting hole, temperature signal fine tuning potentiometer successively, jointing temp signal voltage test side is in series with temperature signal current/voltage conversion of signals resistance and resistance signal output dip switch in the loop then.
5, portable multi-channel flow instrument tester according to claim 1, it is characterized in that described instrument output loop is in series with calibrated meter output signal current detecting hole, connect calibrated meter signal voltage test side then, be in series with output signal current/voltage conversion of signals resistance in the loop.
6, portable multi-channel flow instrument tester according to claim 1, it is characterized in that tester is a box-shaped box body, radially be provided with the differential pressure signal end in its panel one side, pressure signal end and temperature signal end, be respectively equipped with the coarse adjustment potentiometer corresponding on the signal end next door with signal end, be respectively equipped with and the corresponding current detecting socket of coarse adjustment potentiometer on coarse adjustment potentiometer next door, at the other fine tuning potentiometer that is provided with of current detecting socket, at the other resistance signal output dip switch, voltage detecting end of being provided with of temperature signal end current detecting socket, by instrument output voltage test side, school, radially arranged at the opposite side of panel by school instrument output current detection hole and voltage detecting band switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620040149 CN2886517Y (en) | 2006-03-13 | 2006-03-13 | Portable multi-channel flow instrument check meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620040149 CN2886517Y (en) | 2006-03-13 | 2006-03-13 | Portable multi-channel flow instrument check meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2886517Y true CN2886517Y (en) | 2007-04-04 |
Family
ID=37961605
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620040149 Expired - Lifetime CN2886517Y (en) | 2006-03-13 | 2006-03-13 | Portable multi-channel flow instrument check meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2886517Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103674126A (en) * | 2013-12-17 | 2014-03-26 | 国家电网公司 | Movable multi-channel large-air-flue air volume measuring system |
| CN105890718A (en) * | 2014-12-03 | 2016-08-24 | 杭州派乐科技有限公司 | Portable multi-channel flow totalizer field calibrator and control circuit thereof |
| CN106970294A (en) * | 2017-03-31 | 2017-07-21 | 国网福建省电力有限公司 | The method of inspection and verifying attachment of a kind of capacitor differential pressure circuit |
| CN113219285A (en) * | 2021-05-12 | 2021-08-06 | 山东航宇吉力电子有限公司 | General inspection tester of aircraft |
| CN114323434A (en) * | 2020-10-12 | 2022-04-12 | 北京中科京仪科技有限公司 | Pressure transmitter calibration device and calibration method |
-
2006
- 2006-03-13 CN CN 200620040149 patent/CN2886517Y/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103674126A (en) * | 2013-12-17 | 2014-03-26 | 国家电网公司 | Movable multi-channel large-air-flue air volume measuring system |
| CN103674126B (en) * | 2013-12-17 | 2016-06-29 | 国家电网公司 | Mobile multi-channel wind trunk air measuring system |
| CN105890718A (en) * | 2014-12-03 | 2016-08-24 | 杭州派乐科技有限公司 | Portable multi-channel flow totalizer field calibrator and control circuit thereof |
| CN105890718B (en) * | 2014-12-03 | 2023-01-13 | 杭州派乐科技有限公司 | Portable multi-channel flow integrating instrument field calibrator and control circuit thereof |
| CN106970294A (en) * | 2017-03-31 | 2017-07-21 | 国网福建省电力有限公司 | The method of inspection and verifying attachment of a kind of capacitor differential pressure circuit |
| CN114323434A (en) * | 2020-10-12 | 2022-04-12 | 北京中科京仪科技有限公司 | Pressure transmitter calibration device and calibration method |
| CN113219285A (en) * | 2021-05-12 | 2021-08-06 | 山东航宇吉力电子有限公司 | General inspection tester of aircraft |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20070404 |
|
| EXPY | Termination of patent right or utility model |