CN102081062A - High-temperature dewpoint transmitter - Google Patents
High-temperature dewpoint transmitter Download PDFInfo
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- CN102081062A CN102081062A CN2009101996358A CN200910199635A CN102081062A CN 102081062 A CN102081062 A CN 102081062A CN 2009101996358 A CN2009101996358 A CN 2009101996358A CN 200910199635 A CN200910199635 A CN 200910199635A CN 102081062 A CN102081062 A CN 102081062A
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- dew point
- high temperature
- film sensor
- point transmitter
- temperature
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Abstract
The invention provides a high-temperature dewpoint transmitter, and relates to a dewpoint transmitter. The high-temperature dewpoint transmitter comprises a thin-film sensor, a dual-analog channel output and serial output, an alarm output device and a user panel, wherein a probe of the thin-film sensor is equipped with a passive cooling device; a serial port can be a normal RS232C serial port or an RS485/RS422 serial port; the alarm output device comprises two SPCO alarm relays; and the user panel is provided with a display/keypad mode or a non-display mode. The dewpoint transmitter has the advantages of breaking through the temperature limit of the thin-film sensor, broadening the range of measurable temperature and having a wider application fields.
Description
Technical field
The present invention relates to a kind of dew point transmitter, particularly high temperature dew point transmitter.
Background technology
Need in the industrial flow various accurately, stable and exact instrument is to carry out strict Industry Control reliably, these instruments must be easy to install, operation and maintenance.The thin-film capacitor meter is to utilize the film absorption hydrone to change the method that capacitance principle is measured, and it has good stability, temperature coefficient the, and cost is low, the advantage of aspects such as good linearity.The temperature range that can detect is subjected to the restriction of self temperature extremes of film, even utilize resistant to elevated temperatures thermosetting resin membrane, also only can measure under 185 ℃ temperature, can't reach higher temperature but generally.
Summary of the invention
Purpose of the present invention addresses the above problem exactly, breaks through the restriction of film ultimate temperature, the temperature range that further lifting can be measured.For realizing this purpose, the invention provides a kind of high temperature dew point transmitter, it is characterized in that comprising:
Thin film sensor, its probe is connected with cooling device;
Dual analog passage output and serial ports output link to each other with thin film sensor and export transducing signal;
The alarm output unit comprises two SPCO type alarm relaies, and when the detected temperature of thin film sensor surpassed preset range, signal gave the alarm;
The user uses panel, is used to import user instruction.
Preferably, described thin film sensor adopts platinum resistance temperature sensor to measure temperature, can export dewpoint temperature and composite rate simultaneously.
Preferably, described thin film sensor adopts platinum resistance temperature sensor to measure temperature, can export dewpoint temperature and composite rate simultaneously.
Preferably, described serial ports is RS232C serial ports or RS485/RS422 serial ports.
Preferably, described cooling device comprises some refrigerating modules, adjusts cooling effect to eliminate the possibility of condensation by inserting or take out refrigerating module.
Preferably, can trace to the source NIST and NPL of described thin film sensor.
Preferably, described user uses panel to comprise display screen and button, is shown survey measurements and is furnished with the menu mode instruction by display screen, uses button to be provided with.
Preferably, described user uses panel to comprise knob, and the user is provided with by the interior knob of being located in the instrument lid.
The invention has the advantages that, be equipped with cooling device, widened the temperature measurement range of instrument, no longer be confined to the temperature extremes of film, can be applied to more areas by giving probe.
Description of drawings
Fig. 1 has showed structural map of the present invention.
Embodiment
Embodiment one
See also Fig. 1, Fig. 1 is a structural map of the present invention.This high temperature dew point transmitter has comprised that thin film sensor, alarm output unit and user use panel, and wherein the probe in the thin film sensor has been equipped with cooling device.Usually film require temperature extremes the time below 200 ℃, and utilize the passive cooling device of probe, can be so that sensor carries out accurate, stable humidity in 350 ℃ hot environment, dew point is measured.Cooling device can change film-cooled heat and adjust the possibility that cooling effect has been eliminated condensation with inserting or take out refrigerating module, even condensation occurs, also only changes the humidity number of degrees up to water evaporates, and sensor can be recovered from the dewfall state.This high temperature dew point transmitter has also comprised the warning output device, comprising the alarm relay of two SPCO types.User's guidance panel can be display screen/button pattern, also can be no display screen pattern.Wherein display screen/button pattern can be shown survey measurements and is furnished with the menu mode instruction by display screen, uses button to be provided with; In the no display screen pattern, the knob of being located in the user can use in the instrument lid is provided with.
By utilizing passive cooling device, the temperature range that can measure can be widened, and the influence of condensation can be eliminated, obtain accurate, stable Policy Result, make the present invention can be applied to more areas.
High temperature dew point transmitter provided by the invention is a kind of thin-film capacitor formula dew point transmitter of measuring than large-temperature range, and above embodiment is only in order to explanation, and unrestricted technical scheme of the present invention.Those of ordinary skill in the art is to be understood that: the present invention is made amendment or is equal to replacement, and do not break away from any modification or partial replacement of the spirit and scope of the present invention, all should be encompassed in the middle of the claim scope of the present invention.
Claims (7)
1. high temperature dew point transmitter is characterized in that comprising:
Thin film sensor, its probe is connected with cooling device;
Dual analog passage output and serial ports output link to each other with thin film sensor and export transducing signal;
The alarm output unit comprises two SPCO type alarm relaies, and when the detected temperature of thin film sensor surpassed preset range, signal gave the alarm;
The user uses panel, is used to import user instruction.
2. high temperature dew point transmitter as claimed in claim 1 is characterized in that, described thin film sensor adopts platinum resistance temperature sensor to measure temperature, can export dewpoint temperature and composite rate simultaneously.
3. high temperature dew point transmitter as claimed in claim 1 is characterized in that, described serial ports is RS232C serial ports or RS485/RS422 serial ports.
4. high temperature dew point transmitter as claimed in claim 1 is characterized in that described cooling device comprises some refrigerating modules, adjusts cooling effect to eliminate the possibility of condensation by inserting or take out refrigerating module.
5. high temperature dew point transmitter as claimed in claim 1 is characterized in that, described thin film sensor can trace to the source NIST and NPL.
6. high temperature dew point transmitter as claimed in claim 1 is characterized in that described user uses panel to comprise display screen and button, is shown survey measurements and is furnished with the menu mode instruction by display screen, uses button to be provided with.
7. high temperature dew point transmitter as claimed in claim 1 is characterized in that described user uses panel to comprise knob, and the user is provided with by the interior knob of being located in the instrument lid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101996358A CN102081062A (en) | 2009-11-27 | 2009-11-27 | High-temperature dewpoint transmitter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101996358A CN102081062A (en) | 2009-11-27 | 2009-11-27 | High-temperature dewpoint transmitter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102081062A true CN102081062A (en) | 2011-06-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009101996358A Pending CN102081062A (en) | 2009-11-27 | 2009-11-27 | High-temperature dewpoint transmitter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102081062A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104811754A (en) * | 2014-01-23 | 2015-07-29 | 北京伊思国际咨询有限公司 | Tester, testing device, testing method and testing system |
-
2009
- 2009-11-27 CN CN2009101996358A patent/CN102081062A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104811754A (en) * | 2014-01-23 | 2015-07-29 | 北京伊思国际咨询有限公司 | Tester, testing device, testing method and testing system |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20110601 |