digital PH meter the Soil ph Meter PH tester SmartSensor AS218 0.00~14.00pH

Smart Sensor AS218 Digital PH Tester Meter with Range 0.00~14.00pH 

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Smart Sensor AS218 Digital PH Tester Meter with Range 0.00~14.00pH 

 

 

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1. All products with original packaging box, so that can protect the products well on the shipping way avoid damage.
 2. The product  contain the battery because of the limitation of the airline company.
 3. Warranty: All units are with Retail box. and we offer Long warranty period of 2 years,in two years will repair for free.
 4. Shipping Way: if you need it faster, you can choose Aliexpress standard shipping,also have China post airmail ! 

 

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A pH meter is an electronic device used for measuring the pH which is either the concentration of Hydrogen ions in an aqueous solution or the activity of the Hydrogen ions in an aqueous solution. The pH will indicate if the solution is acidic or basic, but is not a measure of acidity or alkalinity. pH meters work in liquids though special probes are sometimes used to measure the pH of semi-solid substances. A pH meter consists of a special measuring probe (a glass electrode) connected to the body which measures and displays the pH reading.

 

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1. Data hold, Max & Min measurement function.
2. Separated pH and temperature sensor probes pH meter: It is easy to carry.
3. Low battery indication and 30 minutes auto power off:It can remind you and save the power.
4. LCD display and Backlight: It is easy to read and accurately testing.
5. Apply in water sources, aquarium, hydroponics, spas, swimming pools and other water systems.
6. Electrode probe can be replaced - Replaceable BNC pH sensor probe.

 

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 Product Specification
 Instrument Level:    Grade 0.01
 PH Measuring range:  PH 0.00~14.00pH
 PH basic measurement error:  ± 0.05pH
 Instrument Repeatability:  ±0.03pH
 Solution temperature compensation range:                          0 ~ 60°C 
 instrument repeatability  0.03pH
mV measuring range:  -1400mV±1400mV
 temperature range:  -10 ~ 60 ; 0.1°C 
 Battery:  9V Battery (not include)
 Display:  Large LCD segment type display with back light
 Working temperature:  0 ~ 35°C 
 Working humidity:  0-80% R H ( Non Gel)
 Product Net Weight  205g
 Product Size  159*66*31mm 
 Packing contents                                                                                      

 1. AS218 type electronic unit 1 pc;

 2. Ph composite electrode:general purpose and field usage.

12.3mm diia.X 160mm.plastic body*1pcs

 3. PH4.00, PH6.86, PH9.18 calibration power*2 bags ench type(see picture)

 4. electrode liquid storage bottle:*1pc
 5. instruction manual and warranty card:one set each              
 Normal Condition of Use
 (1)    the environment temperature (0 ~ 35) ;
 (2)  the relative humidity is not more than 80%;
 (3)  measured solution temperature: (5 ~ 60 );
 (4)  power supply: 9V DC battery X 1pc (006P);
 (5)  no significant vibration;
 (6)  in addition to the earth's magnetic field without external magnetic field outside interference.

 

Open the battery door that located at the back of theinstrument, insert a new 9V battery into this compartmentwith correct polarity. If you have replaced with a new PHcompositeelectrode, please do the calibration before usethis unit to measure.

If measuring interval time is short, one month calibrationonce is enough.
This instruction use three point calibration method foralibrate this unit, please following the step one by one
The unit and calibration solution must be calibrated atambient environment temperature 25 C +/-2 C.
 
User's Guide
  ①    Press “MODE” key go to three different calibrationmode [CAL 1], [CAL 2] and [CAL 3].
 according to the "mode" button instrument into the correction state, respectively into "C4.0" "C6.86" "C9.18" three states cycle scintillation  indicating symbol.

 Correction steps are as follows:

  A:  PH4.00 buffer solution calibration: Press “MODE” key go to [CAL 1] icon shown and flashing, rinse the PH electrode with distilled water, immerse the electrode in the PH4.00 buffer solution, wait for the electrode become stable, you should find the value of mV don't change and state at same value, this time press [CAL ] key more than 3 seconds. until [4.00] flashing stop and disappeared, so the PH4.00 calibration completed.

  B:  PH6.86 buffer solution calibration: Press “MODE” key two times go to [CAL 2] icon shown and flashing, rinse the PH electrode with distilled water, immerse the electrode in the PH6.86 buffer solution, wait for the electrode become stable, you should find the value of mV don't change and state at same value, this time press[CAL ] key more than 3 seconds.until [6.86] flashing stop and disappeared, so the PH6.86 calibration completed

 C:  PH9.18 buffer solution calibration: Press “MODE” key three times go to [CAL 3] icon shown and flashing, rinse the PH electrode with distilled water, immerse the electrode in the PH9.18 buffer solution, wait for the electrode become stable, you should find the value of mV don't change and state at same value, this time press[CAL ] key more than 3 seconds.until [9.18] flashing stop and disappeared, so the PH9.18 calibration completed.

  ④ 

  normal measurement mode:  The factory default mode is normal measuring mode if you press [ the power on/off ] button to turn it on. At this normal measure mode, the unit can measure the PH and environment temperature at the same time, just immerse the electrode into the solution that you want to measure the PH value

  mV measure mode:Press 'MODE” key four times go to mV measure mode,which enable you to measure the ion –selective, ORP(oxidation—reduction potential) and other precise mV measurements. At that mode LCD display screen show mV and ambient temperature at the same time.

 ⑤  If the battery power indicator icon become empty,please replace a new 9V battery immediately, If the instrument will not be use in a long period, please take out the battery from the battery compartment to prevent any leakage of the battery to damage the instrument.
In the following circumstances, Instruments Must be to correction: 
 The solution temperature have a large difference with the calibrated temperature
 PH electrode took off from the liquid storage bottle too long time.
 Replaced with a new PH electrode
 After measured at high concentration acid (PH<2) or alkali (PH>12) solution
 After measured fluoride solution and acidity within PH<7 or concentrated organic solution
 When calibrate, please make sure the buffer solution temperature must be 25°C± 2°C

 

 

Brand Name: SMART SENSOR
Origin: CN(Origin)
With Backlight Or Not: YES
Is Smart Device: No
Model Number: AS218
Display Type: DIGITAL
Measuring Range: 0.00-14.00pH
Resolution: ±0.05
Solvent temperature compensation range:: 0C-60C
Instrument Repeatability: ±0.03
Temperature measuring range:: -10 -60C
Display:: Large LCD segment type display with back light
Operating Condition: 0C-35C / 0-80%RH
Product Weight/Size: 205g/159*66*31mm
Power Supply: 9V battery(not include)
DIY Supplies: Electrical
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