Digital Portable Ph Meter

PH-220 pen-type PH meter, for on-site or field operations designed to simultaneously display PH and temperature values of the portable pen-precision instruments. The instrument is suitable for tap water monitoring, aquaculture, environmental protection, printing and dyeing, electroplating, beverage industry and research institutes Determination of water PH value.
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Product Details

digital portable ph meter


digital portable ph meter 

PH-220 pen-type PH meter, for on-site or field operations designed to simultaneously display PH and temperature values of the portable pen-precision instruments. The instrument is suitable for tap water monitoring, aquaculture, environmental protection, printing and dyeing, electroplating, beverage industry and research institutes Determination of water PH value.


digital portable ph meter

model

PH-220

Measuring range

PH:0.01-14.0PH;temperature:0-50℃;  32-122F

Resolution

PH:0.01PH;temperature:0.1℃ 1F

Accuracy

PH:±0.01PH;temperature:1℃/2F

PH Calibration

PH:25℃;Three-point calibration; 4.0  6.9  9.2

Operating temperature

0-50℃(32-122F)

power supply

1.5V battery*4PCS

size

Φ40*185mm

weight

88g


digital portable ph meter

Operations Guide

Remove the front (1) PH meter below the electrode protective cap, the PH composite electrode stir in purified or distilled water, followed by sufficient washing drying, press ON / OFF power, the PH composite electrode immersed in the test solution, after slightly shaking still, until a stable reading digital PH, PH value is the measured solution.

(2) PH timepiece factory default temperature unit is ℃, temperature units for conversion, proceed as follows: at PH meter off, hold CAL hold, then press ON / OFF power on the right side of the display appears to be : when "℃" or "F", release the CAL; press CAL to select "F" or "℃"; press HOLD after storage selected; the display will show "SA" symbol indicates that the unit has been selected temperature saved, the instrument automatically enter the normal measurement mode.

(3) Instrument calibration: prepare standard buffer 6.86PH, according to the ON / OFF power, the PH composite electrode into standard buffer configured appropriately after shaking still, until PH digital stable, press CAL for about 3 seconds , CAL symbol is displayed, then release the CAL, PH meter will automatically recognize the standard buffer value at the current temperature, appears for about one second the current measured value, standard buffer value and then display the current temperature display "SA" sign after two seconds , he said it was the memory calibration results and then displays "END" symbol indicates calibration has been completed, one second after the return to normal measurement. If you pressed CAL, second after displaying "END" symbol, indicating that the standard buffer or electrode failure aging, press any key to exit, restore measurement mode. Please confirm whether standard electrodes buffer or normal. Calibration 4.01pH, 9.18pH buffer, as above.

When PH meter calibration does not show "END" sign, do not count out from the PH standard buffer. PH meter with a time calibration standard buffer and the correct method of operation, improper calibration will increase measurement error! In non-standard calibration status, do not press CAL may cause erroneous instrument calibration, the instrument can not work or lead to measurement errors far exceeded normal.

(4) instrument Press ON / OFF power, when the instrument is in measurement mode, press HOLD to lock the current data on the display, and there will be "HOLD" symbol on the display, press HOLD unlock mode.

(5) over range display, when the PH value is less than "0", above the "14" or "not in a measuring electrode solution" when, PH display will show "- - - -."

digital portable ph meter

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