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儀器儀表操作說明書翻譯-中英對照
目 錄
一. 儀器的主要技術性能
二. 儀器的外形結構
三. 儀器的使用方法
四. 儀器的維護
附錄1. 緩沖溶液的配制
附錄2. 緩沖溶液的pH值與溫度的關系對照表
使用本儀器之前，請仔細閱讀本使用說明書，以便使您能正確使用儀器，避免不必要的測量誤差, 確保測量精度, 延長儀器的使用壽命。
pHS-25型pH計, 是一臺由單片機控制，具有藍色背光、雙排數(shù)字顯示LCD，同時顯示pH(mV)值和溫度值、緩沖溶液自動認知(pH4.00、pH6.86、pH9.18)功能，適用于工礦、研究院所的化驗室取樣測定水溶液的酸度(pH)值和測量電極電位(mV)值。
一、 儀器的主要技術性能
1. 儀器正常使用條件
(1) 環(huán)境溫度(0~40)℃；
(2) 相對濕度不大于85%；
(3) 被測溶液溫度：(5~60)℃；
(4) 供電電源：DC9V@ 300mA；
(5) 無顯著的振動；
(6) 除地球磁場外無外磁場干擾。
2．儀器的主要技術參數(shù)
1. 儀器級別：0.1級
2．測量范圍：
pH：0.00~14.00pH
mV：0~±1999mV(自動極性顯示)
3. 最小顯示單位：0.01 pH；1mV
4. 溫度補償范圍：0~60℃
5. 電子單元基本誤差： pH：±0.05 pH
mV：±1mV±1個字
6. 儀器的基本誤差：±0.10pH±1個字
7. 電子單元輸入電流：不大于1×10-11A
8. 電子單元輸入阻抗：不小于3×1011Ω
9. 溫度補償器誤差：±0.05 pH
11.電子單元重復性誤差： pH：不大于0.05 pH
mV：不大于1mV
12.儀器重復性誤差：不大于0.01pH
13.電子單元穩(wěn)定性：0.05pH±1個字／3h
14.外形尺寸 1×b×h mm：150mm×195mm×85mm
15.重 量：0.4kg
3. 儀器成套性
(1) pHS-25型電子單元一臺；
(2) pH復合電極一支；
(3) 電極梗一根；
(4) 電極夾一只；
(5) 直流穩(wěn)壓電源一只；
(6) pH4,7,9標準試劑各3包；
(7) 50mL塑料燒杯3只；
(8) 使用說明書一份；
(9) 合格證一份。
二、儀器的外形結構
儀器外型結構如圖
1―測量電極插口；
2―參比電極插口；
3―mV輸出插口；
4―外接電源插口；
5―LCD顯示屏；
6―電源開關；
7―標定按鍵
8―mV/pH/ENTER按鍵；
9－置數(shù)下降按鍵；
10－置數(shù)上升按鍵；
11－電極梗安裝裝置。
三、儀器的使用方法
開機前準備
a． 電極梗旋入電極梗安裝座，調節(jié)電極夾到適當位置；
b． 拉下復合電極前端的電極套，將復合電極夾在電極夾上；
c． 用蒸餾水清洗電極；
d． 將隨機所配的直流穩(wěn)壓電源接到儀器上的電源插座中，另一端連接到220V交流電源插座上。
儀器的開機
按一下儀器的“電源”鍵，儀器即進入pH測量狀態(tài)。
儀器的關機
儀器在任何工作狀態(tài)下，按一下儀器的“電源”鍵，儀器進入關機狀態(tài)。
儀器的溫度設置
當儀器在pH測量狀態(tài)下，按儀器的“▲”或“▼”鍵，儀器的“℃”符號會閃耀，當調整到所需的溫度值時，按儀器的“mV/pH/ENTER”鍵，儀器的“℃”符號停止閃耀，把設置的溫度值存入儀器內，儀器自動返回到pH測量狀態(tài)。
儀器的標定
儀器在使用前，即測量溶液pH值前，先要進行標定。但并不是每次使用前都要進行標定，一般當測量間隔時間比較短的情況下，每天標定一次即可。
本儀器可以進行采用一點標定，也可以進行二點標定；儀器具有自動認知標定和手動標定功能，具體操作方法如下：
一點標定
注意：儀器使用一點標定時，其斜率值使用的是上一次的標定值
(1) 按一下“電源”鍵，接通電源，儀器進入“pH”測量狀態(tài)；
(2) 按“▲”或“▼”鍵，調整儀器的溫度顯示值，使儀器溫度顯示值與使用的標準溶液的溫度值相一致（在按“▲”或“▼”鍵，儀器的“℃”符號會閃耀），然后按儀器的“mV/pH/ENTER”鍵，把設置的溫度值存入儀器內，儀器自動返回到pH測量狀態(tài)；
(3) 按儀器的“CAL”鍵，使儀器“定位”符號閃耀，表明儀器進入第一點標定狀態(tài)；
(4) 首先用蒸餾水清洗電極，然后在三種pH緩沖溶液中選擇一種與被測溶液pH值比較接近pH緩沖溶液。把電極插入此標準溶液中，同時利用電極輕輕攪拌，然后停止攪拌，輕輕地把電極置于溶液中，等待儀器的讀數(shù)穩(wěn)定；
(5) 當使用儀器的自動認知標定功能進行標定時，按儀器的“mV/pH/ENTER”鍵，儀器顯示該標準溶液在當前溫度下的pH值，然后儀器“斜率”符號閃耀，按儀器的“CAL”鍵，儀器“斜率”符號消隱，儀器的一點標定完成，可以進行測量。
Made in Shanghai: 02220043rd
Produce and maintenance address: No. 311, Lanxi Road, Shanghai
Tel.: 021-62574582
Fax: 021-62574582
Postcode: 200333
Website: http: //www.sh-zhiguang.com
Instruction Manual
Made in Shanghai: 02220043rd
PHS-25
PH Meter for laboratory use
Shanghai Zhiguang Yiqi Yibiao Co., Ltd
2006-03 the third edition
Catalogue
I. Main technical feature of the instrument
II. Appearance structure of the instrument
III. Operating Methods of Instrument
IV. Maintenance of Instrument
Appendix 1: Preparation of Buffer Solution
Appendix 2. Contrast forms in relation between pH value and temperature of the buffer solution
Before operation this instrument, please read the operation manual carefully, in order to enable you to use the instrument correctly, and avoid the unnecessary measurement error, so as to guarantee the precision of measure, lengthen the service life of this instrument.
pHS-25 pH meter is a controlled by microprocessor, have blue back light and double digital display LCD; has the function of displaying pH (mV) value and temperature value in the same time, and buffering the automatic cognitive (pH4.00 , pH6.86 , pH9.18 ) solution. It is suitable for taking a sample and determining the value of acidity (pH ) of the aqueous solution and measuring the value of electric potential of electrodes (mV ) of the industrial mining and laboratory of the institute.
I. Main technical feature of this instrument
1. Normal service condition of the instrument
(1) Environment temperature (0~40)℃；
(2) Relative humidity is not greater than 85%;
(3)Examined solution temperature: (5~60)℃；
(4)Power supply: DC9V@ 300mA;
(5)Free of remarkable vibration;
(6)Free of magnetic interference except the geomagnetic field.
II. Main technical parameter of the instrument
1. The grade of the instrument: 0.1 grades
2. Measuring range:
PH: 0.00~14.00pH
mV: 0~±1999mVs (automatic polarity display)
3. Minimum displaying unit: 0.01 pH; 1mV
Compensation range of temperature: 0~60℃
5. Basic error of electronic unit: pH: ±0.05 pH
mV: ± 1mV± one scale
6. Basic error of the instrument: ± 0.10pH± a word
7. Inputs current of electronic unit: Not greater than 1× 10-11A
8. Input impedance of electronic unit: Not smaller than 3×1011Ω¸
9. Temperature compensator error: ±0.05 pH
11. Electronic repeated error of unit: pH: Not greater than 0.05 pH; mV: Not greater than 1mV
12. Repeated error of the instrument: Not greater than 0.01pH
13. Stability of electronic unit: 0.05pH±a word / 3h
14. External dimension 1× b× h mm: 150mm× 195mm× 85mm
15. Weight: 0.4kg
3. Configuration of instrument
(1) One PHS-25 electronic unit;
(2)One complex electrode of pH;
(3) One electrode stem;
(4) One electrode clamper;
(5) One dc regulated power supply;
(6) 3 packs of standard reagent of PH4, 7 and 9 respectively;
(7)3 50mL plastic beakers;
(8)One operation instructions;
(9)One quality certificate
II. Appearance structure of the instrument
The appearance structure of the instrument such as graph:
1- Measuring socket of electrodes;
2- Reference socket of the electrode;
3- MV exports the socket;
4- External power socket;
5- LCD display;
6- Switch;
7- Standard button
8- MV/pH/ENTER button;
9- Index distressing buttons;
10- Index increasing buttons;
11- Installation device of electrode stem.
III．Operating Methods of Instrument
Preparation before startup
a. Screw the electrode stalk into an installing seat and regulate the electrode clamper to an appropriate location;
b. Remove electrode casing at the front end of compound electrode and nip the compound electrode onto the electrode clamper;
c. Rinse the electrode with distilled water;
d. Connect randomly assigned regulated power supply to the power plug of instrument and connect the other end to 220V AC power plug.
Startup of instrument
Press key “Power supply” on instrument, which enters into pH measuring state.
Shutdown of instrument
Press key “Power supply” on instrument in any working state and the instrument enters into state of shutdown.
Temperature setting of instrument
When the instrument is in pH measuring state, press key“▲”or“▼”on instrument, the symbol “C” on instrument will be flashing; when it is adjusted to the required temperature value, press key “mV/pH/ENTER”on instrument, the symbol “C” will stop flashing and store the set temperature value into the instrument and it will return to pH measuring state automatically.
Calibration for instrument
Before starting up instrument, namely measuring pH value of solution, calibration should be carried out in advance but not every time before application. Generally, only one time of calibration per day is available when the measuring interval is relatively short.
This instrument adopts both one-point calibration and two-point calibration; the instrument has functions of automatically cognitive calibration and manual calibration, the specific operating methods are as follow:
One-point calibration
Notes: as for one-point calibration, the slope value applied is the calibration value last time.
(1) Press key “Power supply” and switch on, the instrument enters into “pH” measuring state;
(2) Press key“▲”or“▼”to regulate temperature value of instrument and keep temperature value of instrument consistent with temperature value of standard solution (the symbol “C” on instrument will flash on pressing key “▲”or“▼”), and then press key “mV/pH/ENTER”on instrument to store the set temperature value into instrument and the instrument will return to pH measuring state automatically.
(3) Press key “CAL”to make symbol “Calibration” on instrument flash, indicating the instrument has entered into calibration state for the first point;
(4) At first, rinse the electrode with distilled water, then select a sort of pH buffer solution among three pH buffer solutions with a pH value being close to the tested solution. Insert the electrode into this standard solution and mix it with the electrode at the same time, then stop mixing and put the electrode in the solution slightly, waiting for the reading of instrument becoming stabilized;
(5) When apply the function of automatically cognitive calibration for calibrating, press key “mV/pH/ENTER”on instrument and the instrument indicates pH value of the standard solution at current temperature, and then the symbol “Slope”on instrument flashes, which will disappear if key“CAL” is pressed. After one-point calibration has been completed, the measurement can be carried out.
When manual function of instrument is applied for calibrating, press key“▲”or“▼”to keep reading indicated by instrument consistent with pH value of buffer solution at current temperature (if mixed phosphate is applied for calibration at the temperature of 10℃, pH=6.92), press key“mV/pH/ENTER”on instrument and instrument indicates pH value of this standard solution at current temperature, and then the symbol “Slope”on instrument flashes, which will disappear if key“mV/pH/ENTER” is pressed. After one-point calibration has been completed, the measurement can be carried out.
Two-point calibration
(1) Carry out calibration for the first point as per method of one-point calibration, when the symbol “Slope”on instrument flashes, it indicates that the instrument enters into calibration state for the second point.
(2) After taking out the electrode form pH buffer solution, which should be rinsed with distilled water, insert the rinsed electrode into to another pH buffer solution and mix it with the electrode, then stop mixing and put the electrode in the solution slightly, waiting for the reading of instrument becoming stabilized;
(3) When apply the function of automatically cognitive calibration for calibrating, press key “mV/pH/ENTER”on instrument, which means the two-point calibration has been done and it enters into measuring state;
When manual function of instrument is applied, press key“▲”or“▼”to keep reading of indicated by instrument consistent with pH value of buffer solution at current temperature (if sodium tetraborate is applied for calibration at the temperature of 10℃, pH=9.33), press key
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