Specifications :

1. Model: PH-117
2. Measuring range:
PH: 0.00-14.00 PH
℃: 0 ℃~50℃ (32°F~122°F)
EC: 0.00~19.99 EC
CF: 0.0~199 CF
TDS: 10~19990 ppm
Mv: 0~±1999 mV
3. Resolution:
PH: 0.01 PH
°C: 0.1°C (0.2°F)
EC: 0.01 EC
CF: 0.1 CF
TDS: 10 ppm
Mv: 1mV
4. Accuracy:
РH: ±0.1 PH
℃: ±1.0 ℃
EC, CF, TDS: ±2% F.S
Mv: ±0.1%F.S±1digit
5. Automatic temperature compensation: 0℃~50℃
6. Working temperature: 0℃~50℃
7. Power supply: DC 6V, with power adapter (according to customer requirements), with rechargeable battery
8. Dimensions: 95mm x 61mm x 20 mm
9. Weight: 230g

Operation :

1. Connect the power adaptor to the power supply outlet.
2. Connect the pH or ORP electrode to the probe inset of the
instrument. Remove the protective cap.
3. Turn on the meter.
4. Immerse the electrode in the solution to be tested. Stir gently
and wait for the reading to stabilize.
5. Press the " / " key, to switch between Celsius and Fahrenheit.
Press the "MODE " key to cycle through measurements of EC, CF
or TDS.
6. When you connect the ORP electrode, Please press the "MV" key.
It will show the ORP value.
7. After use, turn off the meter. Rinse the electrode with tap water to
minimize contamination. Replace the protective cap.

PH Calibration：

1.Pour a small quantity of pH6.86, pH4.00and pH9.18 solution into clean beakers.
2.For a particularly accurate calibration, it is advised to use two beakers for each buffer solution: the first is to be used forrinsing the electrode, the second is to be used for the calibration. In this wav.the risks of contaminatina the buffer solution are reduced to a minimum.
3.Connect the power adaptor.Turn onthe meter.
4.Immerse the ph electrode in pH6.86 buffer solution, and gently shake it.
5.Allow the readina to stabilize and with the supplied screwdriver.adiust the "pH7" calibrationscrew toread "6.86"pH.Rinse the electrode with tap water, and suck it with filter-pape.
6.Immerse the ph electrode in pH4.00 buffer solution, and gently shake it.
7.Allow the reading to stabilize and with the supplied screwdriver, adjust the "pH4" calibration screw to read "4.00"pH. Rinse the electrode with tap water, and suck it with filter-pape.
8.Immerse the ph electrode in pH9.18 buffer solution until the display shows "9.18".
9.The calibration of the instrument's pH range is now complete.

Important：
The meter should be recalibrated under following situations:*The meter has been used(laid) for long time from the last calibration.*The meter has been used in particularly taxing conditions.*The utmost accuracy is required.

EC CF ppm Calibration:

1.Press the "MODE" key. Select "EC". Immerse the EC electrode in 12880 ms/cm(12.88EC) calibration solution.
2.Allow the reading to stabilize and with a small screwdriver turn the
CAL calibration trimmer until the display shows "12.88EC". Rinse the
electrode with distilled water, and dry it with filter-paper.
3.Immerse the EC electrode in 1413 us/cm(1.41EC) calibration solution until the display shows "1413(1.41EC)"

Notice：
1.Stir gently the meter when using. Don't let some bleb on the electrode.
2.In case of abnormal phenomena such as high measured deviation, blinking measured value, no zero resetting, etc, please immerse the electrode in alcohol for cleaning.
3.lf the protection cap has been without electrolyte, or ifthe electrode as not been used for along time, the electrode must be reactivated by leaving it for several hours in a beaker containing normal tap water.
4.When without using power adaptor, If the meter can not be switched on or the display fades. Please connect the power adaptor to the power supply outlet. It will charge up the rechargeable battery.And it also works on.

Packing List :

1 * PH meter with retail box
1 * Manual in English