該液體密度計是根據(jù)雙U型管內(nèi)充滿不同介質(zhì)時震蕩頻率不同的原理進(jìn)行液體密度測量的。將待測液體泵入諧振筒傳感器后,由單片機(jī)進(jìn)行測量數(shù)據(jù)處理,快速直接,而且靈敏度高。它是由雙音叉式密度傳感器、振筒電路、測溫電路、CPU、顯示器、恒溫槽、進(jìn)液泵及控制面板組成。該液體密度計可廣泛用于各種液體密度的測量,且配合不同的濃度轉(zhuǎn)換軟件,還能直接讀出相應(yīng)液體的濃度值,如酒精,通過單片機(jī)軟件的處理,可直接讀出體積濃度數(shù)據(jù),測試更為方便。
產(chǎn)品型號和主要參數(shù)概況
貨號 |
ETT-005 |
ETT-01 |
ETT-02 |
ETT-05 |
ETT-08 |
ETT-10 |
主要技術(shù)參數(shù) |
測量范圍 |
0~1999.99kg/m3 |
0~1999.99kg/m3 |
0~1999.9kg/m3 |
0~1999.9kg/m3 |
0~1.9999g/cm3 |
0~1.999g/cm3 |
示值誤差 |
±0.05kg/m3 |
±0.1kg/m3 |
±0.2kg/m3 |
±0.5kg/m3 |
±0.0008g/cm3 |
±0.001g/cm3 |
恒溫控制 |
20℃±0.05℃ |
20℃±0.05℃ |
20℃±0.05℃ |
20℃±0.1℃ |
20℃±0.1℃ |
20℃±0.1℃ |
采樣量 |
2ml/次 |
2ml/次 |
2ml/次 |
2ml/次 |
2ml/次 |
2ml/次 |
數(shù)據(jù)存貯 |
80組 |
80組 |
80組 |
80組 |
80組 |
80組 |
環(huán)境要求 |
5℃~35℃ |
5℃~35℃ |
5℃~35℃ |
5℃~35℃ |
5℃~35℃ |
5℃~35℃ |
供電電源 |
220V±22V,50Hz±1Hz,50VA |
220V±22V,50Hz±1Hz,50VA |
220V±22V,50Hz±1Hz,50VA |
220V±22V,50Hz±1Hz,50VA |
220V±22V,50Hz±1Hz,50VA |
220V±22V,50Hz±1Hz,50VA |
功
能
特
點(diǎn) |
1.六位數(shù)碼密度值顯示。 |
1.六位數(shù)碼密度值顯示。 |
1.六位數(shù)碼密度值顯示。 |
1.五位數(shù)碼密度值顯示。 |
1.五位數(shù)碼密度值顯示。 |
1.四位數(shù)碼密度值顯示。 |
2.雙膽恒溫控制20℃±0.1℃(恒溫值可根據(jù)用戶要求定做)。
3.鍵控操作,自動采樣。
4.內(nèi)壁免掛壁處理。
5.數(shù)據(jù)可回調(diào)刪除(可定做數(shù)據(jù)傳輸和數(shù)據(jù)打印功能)。
6.用20℃純水校準(zhǔn)。 |
外型尺寸:206cm×205cm×200cm
儀器重量:3.2Kg
ETT series electronic liquid densitometer
1. General :
ETT series electronic densitometer works on basis of the principle of vibration frequency variation in different media what filled fully in U shape pipe for measuring the media density. the micro processor shall process the measured data from the sensor mounted in the resonator with quick, direct and high precision features. The unit consists of double tuning fork sensor, circuit of vibration cylinder, temperature measurement circuit, CPU, display screen, constant temperature chute, filling pump and control panel. Combined with various density converting software the direct reading of concentration of various liquid is available. Such as alcohol, may be processed by single-chip processor software to read out directly the data of volume concentration, making the test more convenient.
2. Functions :
1.Constant temperature control :for the reason of the impacts of temperature to the density of liquid therefore the measured density shall be converted into the density at 20℃. but in herein device the temperature of the constant temperature chute shall be controlled within the range of 20℃±0.1℃ and the sensor as well as the sample liquid enclosed in the chute , the single-chip processor and the sensor for resonator shall be engaged for the temperature control. so that the error and the complication of the conversion can be avoided and the precision, stability and repeat can be guaranteed(the constant temperature chute can be custom-built.)。Double bladders are arranged for constant temperature control with better seal and stability.
2.Direct reading of density for 20℃ of liquid and indication of temperature:The single -chip processor work out the density of liquid on basis of the mathematic model of frequency to liquid density of sensor and the measured frequency of vibration, then carry out the floating-point mathematics for avoiding the extra error caused by the insufficient precision. The digital reading of density calculated by the processor is displayed and the temperature display also available.
3.Automatic sampling:Creep pump controlled by the single-chip processor and driven by stepping motor make the system running at high level of automation.
4.Free remainder treatment arrangement:The remainder of liquid on the inner wall of the resonator tube after liquid flow may impact the precision of measurement therefore the free remainder treatment to the inner wall of the resonating tube can guarantee the precision of the device.
5.Acid and alkali resistant pipe:The entire pipe contacting the liquid shall be acid and alkali resistant pipe for application of acid or alkali liquid.
6. Data storing :In-built memory chip for storing 80 groups of measured data, the recall and delete function are available.
7.Subsidiary function :Special software is available for reading of liquid concentration at various temperatures as per client's application.
8.Clalibration :the device can be calibrated with pure water at 20℃ for correct its shifting caused of long time off -position which is not available in normal glass densitometer.
3. The new advantages:
1. Double U-shape resonating sensor adopted for the liquid density measurement that making measurement quick and with higher precision comparing with the conventional method of mass to volume ratio.
2.In addition to the advantage of constant temperature feature at 20℃ the double bladder constant temperature arrangement can keep the higher stability and resistant to circumstance.
Types and specifications
type No. |
ETT-005 |
ETT-01 |
ETT-02 |
ETT-05 |
ETT-08 |
ETT-10 |
specification |
range |
0~1999.99kg/m3 |
0~1999.99kg/m3 |
0~1999.9kg/m3 |
0~1999.9kg/m3 |
0~1.999g/cm3 |
0~1.999g/cm3 |
indication error |
±0.05kg/m3 |
±0.1kg/m3 |
±0.2kg/m3 |
±0.5kg/m3 |
±0.0008g/cm3 |
±0.001g/cm3 |
constant temperature control |
20℃±0.05℃ |
20℃±0.05℃ |
20℃±0.05℃ |
20℃±0.1℃ |
20℃±0.1℃ |
20℃±0.1℃ |
sampling |
2ml/one time |
2ml/one time |
2ml/one time |
2ml/one time |
2ml/one time |
2ml/one time |
data storing |
80 groups |
80 groups |
80 groups |
80 groups |
80 groups |
80 groups |
ambient condition |
5℃~35℃ |
5℃~35℃ |
5℃~35℃ |
5℃~35℃ |
5℃~35℃ |
5℃~35℃ |
power |
220V±22V,50Hz±1Hz,50VA |
220V±22V,50Hz±1Hz,50VA |
220V±22V,50Hz±1Hz,50VA |
220V±22V,50Hz±1Hz,50VA |
220V±22V,50Hz±1Hz,50VA |
220V±22V,50Hz±1Hz,50VA |
indication |
one 6 digitals indication of density |
one 6 digitals indication of density |
one 6 digitals indication of density。 |
one 5 digitals indication of density。 |
one 5 digitals indication of density |
one 4 digitals indication of density |
Dimension :206mm×205mm×200mm
Weight:3.2Kg
ETT-SJO4型(數(shù)字酒精計)
功能特點(diǎn):
1.恒溫控制:因?yàn)橐后w密度受溫度影響大,所以要把實(shí)時溫度下檢測的液體密度換算成20℃時的液體密度。本儀器采用恒溫槽控制,把傳感器和其所屬部件及樣液都密封在恒溫槽內(nèi),通過溫度傳感器檢測振蕩管(樣液)的溫度,經(jīng)單片機(jī)控制電子元件制冷或制熱,保證恒溫槽內(nèi)的溫度穩(wěn)定在20℃±0.1℃范圍內(nèi)。這樣不僅解決了換算帶來的麻煩和誤差,還保證了儀器的測量精度、穩(wěn)定性以及重復(fù)性。本儀器采用雙膽恒溫,密封性更好,穩(wěn)定性更強(qiáng)。
2.直接顯示液體20℃時的密度值,并由溫度顯示:通過單片機(jī)檢測出傳感器的振蕩頻率,利用傳感器頻率和液體密度關(guān)系的數(shù)學(xué)模型,求出液體的密度值,然后進(jìn)行浮點(diǎn)運(yùn)算,使在運(yùn)算過程中不會因運(yùn)算位數(shù)不夠帶來額外的誤差,保證測量結(jié)果的精度。單片機(jī)計算的密度值結(jié)果通過五位數(shù)碼顯示出來,并有溫度顯示窗口。
3.自動采樣:采用單片機(jī)控制步進(jìn)電機(jī)驅(qū)動蠕動泵吸樣,提高了產(chǎn)品的自動化程度。
4.免掛壁處理:液體在流動的過程中會在振蕩管內(nèi)壁留下殘液,就會影響測量精度,所以通過對振蕩管內(nèi)壁進(jìn)行免掛壁處理可以避免振蕩管內(nèi)壁殘留液體,保證了儀器的精度。
5.數(shù)據(jù)存貯:內(nèi)置存貯芯片,能存貯80組檢測數(shù)據(jù),且可回調(diào)和刪除。
6.校準(zhǔn)功能:當(dāng)儀器長時間不使用時會產(chǎn)生漂移,此儀器可使用20℃純水作為標(biāo)準(zhǔn)對儀器進(jìn)行校準(zhǔn),這是玻璃密度計無法實(shí)現(xiàn)的功能。
產(chǎn)品的創(chuàng)新點(diǎn):
采用雙U型管諧振傳感器進(jìn)行液體密度測量,改變了傳統(tǒng)的質(zhì)量與體積比的測量方法,精確度高,方便快捷。
主要技術(shù)參數(shù)
密度的測量范圍:789.23~998.20kg/m3
密度測量精確度:±0.4kg/m3
酒精度測量范圍:q: 0~100%
酒精度測量精確度:0.2% (q/%)
恒溫控制:20℃±0.1℃
采樣量:2ml/次
數(shù)據(jù)存貯:80組
環(huán)境溫度要求:5℃~35℃
供電電源:220V±22V,50Hz±1 Hz,50VA
外型尺寸:206mm×205mm×200mm
儀器重量:3.2Kg
貨號:ETT-SJO2型(數(shù)字酒精計)
產(chǎn)品的創(chuàng)新點(diǎn):
采用雙U型管諧振傳感器進(jìn)行液體密度測量,改變了傳統(tǒng)的質(zhì)量與體積比的測量方法,精確度高,方便快捷。
主要技術(shù)參數(shù)
密度的測量范圍:789.23~998.20kg/m3
密度測量精確度:±0.2kg/m3
酒精度測量范圍:q: 0~100%
酒精度測量精確度:0.1% (q/%)
恒溫控制:20℃±0.05℃
采樣量:2ml/次
數(shù)據(jù)存貯:80組
環(huán)境溫度要求:5℃~35℃
供電電源:220V±22V,50Hz±1 Hz,50VA
外型尺寸:206mm×205mm×200mm
儀器重量:3.2Kg
產(chǎn)品優(yōu)勢:
1.綜合誤差小:由于減少了很多誤差因素,減少了儀器的綜合誤差。
2.工作量。河捎跊]有了換算等工作,減少了工作量。
3.節(jié)省資源:每次采樣量僅2ml,減少了樣液資源的浪費(fèi)。
4.自動化程度高:蠕動泵自動進(jìn)樣,自身校準(zhǔn)。
5.性價比高:質(zhì)量可與國外同類產(chǎn)品媲美,價格只有國外同類產(chǎn)品的八分之一。
應(yīng)用領(lǐng)域
該產(chǎn)品主要用于酒廠的生產(chǎn)控制及質(zhì)量技術(shù)監(jiān)督系統(tǒng)、工商管理系統(tǒng)中對酒精度的檢測。
數(shù)字硫酸濃度計
數(shù)字硫酸濃度計
是利用雙U型管震蕩原理進(jìn)行硫酸濃度測量的。將待測硫酸泵入諧振筒傳感器后,通過恒溫槽恒溫至20℃,由單片機(jī)檢測充滿硫酸溶液的雙U型管的震蕩頻率,進(jìn)行測量數(shù)據(jù)處理,換算成硫酸濃度,快速直接,而且靈敏度高。 本儀器由雙音叉式密度傳感器、振筒電路、測溫電路、CPU、顯示器、恒溫槽、進(jìn)液泵及控制面板組成。
功能特點(diǎn):
1.恒溫控制:因?yàn)橐后w密度受溫度影響大,所以要把實(shí)時溫度下檢測的液體密度換算成20℃時的液體密度。本儀器采用恒溫槽控制,把傳感器和其所屬部件及樣液都密封在恒溫槽內(nèi),通過溫度傳感器檢測振蕩管(樣液)的溫度,經(jīng)單片機(jī)控制電子元件制冷或制熱,保證恒溫槽內(nèi)的溫度穩(wěn)定在20℃±0.1℃范圍內(nèi)。這樣不僅解決了換算帶來的麻煩和誤差,還保證了儀器的測量精度、穩(wěn)定性以及重復(fù)性(恒溫值可根據(jù)用戶要求定做)。
2.直接顯示硫酸溶液20℃時的密度值和濃度值,并有溫度顯示:通過單片機(jī)檢測出傳感器的振蕩頻率,利用傳感器頻率和液體密度關(guān)系的數(shù)學(xué)模型,求出液體的密度值,然后進(jìn)行浮點(diǎn)運(yùn)算,在通過軟件換算成硫酸濃度值,使在運(yùn)算過程中不會因運(yùn)算位數(shù)不夠帶來額外的誤差,保證測量結(jié)果的精度。單片機(jī)計算的密度值結(jié)果通過五位數(shù)碼顯示出來,并有溫度顯示窗口。 3.自動采樣:采用單片機(jī)控制步進(jìn)電機(jī)驅(qū)動蠕動泵吸樣,提高了產(chǎn)品的自動化程度。 4.耐酸堿管路:與液體直接接觸的管路都是進(jìn)口耐酸堿管,保證儀器能測量酸堿溶液。 5.數(shù)據(jù)存貯和傳輸:內(nèi)置存貯芯片,能存貯80組檢測數(shù)據(jù),且可回調(diào)和刪除?筛鶕(jù)用戶要求通過232接口與計算機(jī)連接(定做)。 6.校準(zhǔn)功能:當(dāng)儀器長時間不使用時會產(chǎn)生漂移,此儀器可使用20℃純水作為標(biāo)準(zhǔn)對儀器進(jìn)行校準(zhǔn)。
貨號:ETT-LSO2
主要技術(shù)參數(shù) 密度的測量范圍:998.0~1999.99kg/m3 ( 0.9980~1.99999g/cm3) 密度測量示值誤差:≤±0.2kg/m3 (0.0002g/cm3) 精度測量分辨率:0.1kg/m3 (0.0001 g/cm3 ) 硫酸濃度測量范圍:0~93% 硫酸濃度示值誤差:≤0.1% 恒溫控制:15~35℃范圍內(nèi)任一溫度 恒溫精度:±0.05℃ 采樣量:2ml/次 數(shù)據(jù)存貯:80組 環(huán)境溫度要求:5℃~35℃ 供電電源:220V±22V,50Hz±1 Hz,50VA 外型尺寸:206mm×205mm×200mm 儀器重量:3.2Kg
貨號:ETT-LSO4
主要技術(shù)參數(shù) 密度的測量范圍:998.0~1999.9kg/m3 ( 0.9980~1.9999g/cm3) 密度測量示值誤差:≤±0.4kg/m3 (0.0004g/cm3) 精度測量分辨率:0.1kg/m3 (0.0001 g/cm3 ) 硫酸濃度測量范圍:0~93% 硫酸濃度示值誤差:≤0.2% 恒溫控制:15~35℃范圍內(nèi)任一溫度 恒溫精度:±0.1℃ 采樣量:2ml/次 數(shù)據(jù)存貯:80組 環(huán)境溫度要求:5℃~35℃ 供電電源:220V±22V,50Hz±1 Hz,50VA 外型尺寸:206mm×205mm×200mm 儀器重量:3.2Kg |