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Feature:
1. Suitable for: Ph‑110 industrial PH meter is an intelligent upgrading product of industrial PH meter, which can continuously measure and control the PH value of sewage. This device is suitable for chemical industry, printing and dyeing, paper making, pharmaceutical, electroplating and environmental protection fields
2. Function: PH /ORP measurement, upper and lower limit control, current output, digital communication. PH high limit alarm, low limit alarm double relay, hysteresis can be adjusted freely
3. Meter Mode: Meter mode isolated transmitter port with a maximum loop resistance greater than 300Ω. Audible alarm can be switch on or off through the interface options
4. LCD Backlight: LCD backlight can choose energy saving mode, automatic shutdown at regular time
5. Design: Password management function, prevent non professional misoperation

Specification:
Item Type: ORP Water Quality Tester
Material: ABS
Measuring Range: PH(0 – 14 pH) ;ORP( -1900 - +1900 mV)
Accuracy: + 0.02 pH; + 1 mV
Resolution: 0.01pH; 1mV
Stability: ≤ 0.02 pH/24 Hours; ≤ 3 mV/24 Hours
PH Standard Solution: 4.00/6.86/9.18
Display Mode: 128x64 dot Array LCD
Temperature Compensation: 0–100 °C Manual/Auto (NTC10K)
Signal Output: 4-20mA Isolation Protection Output, Maximum Loop Resistance 300Ω
Alarm Output: One Set of High and Low Limit Alarm Contacts (3A/250 V AC), Normally Open Contact Relay
Power Supply: AC 220V±10% 50Hz
Power Consumption: ≤3W
Environmental Conditions: (1) Temperature 0-60℃ (2) Humidity≤85%RH
Boundary Dimension: Approx. 96 x 96 x 110mm / 3.8 x 3.8 x 4.3in (H x W x D)
Hole Size: Approx. 92 x 92mm / 3.6 x 3.6in (H x W)
Electrode Length: Approx. 5meters / 5.5yd
Weight: Approx. 730g / 26oz

Package List:
1 x ORP Water Quality Tester1 x Electrode1 x User Manual

Note:
1. The electrode should be cleaned regularly. When disassembling and cleaning the electrode, you cannot break the oxygen permeable membrane, and you cannot use filter paper to rub the oxygen permeable membrane on the electrode to avoid damaging the oxygen permeable membrane.
2. The cable connector must be kept clean, and must not be exposed to moisture or water.
3. When the displayed value of the instrument differs greatly from the actual value or cannot measure the low content of oxygen, the electrolyte inside the oxygen electrode may dry up and needs to be refilled with electrolyte, generally the maintenance work of replacing or adding electrolyte is carried out once every 6 months; the spare membrane head needs to be replaced when the permeation membrane ruptures. Each time after replacing or adding electrolyte or replacing the spare membrane head, the electrode needs to be repolarized and calibrated. The specific steps are as follows: put the electrode upside down, unscrew the black part of electrode shielding at the lower part of the electrode, remove the membrane head, pour off the old liquid in the cavity, fill in the original electrolyte, do not fill it too full, and let the excess electrolyte drain off. Just screw it tightly and make sure the membrane can stick to the head of the electrode core. After replacing the electrolyte well, the polarization and calibration should be done again.
4. Electrode polarization: After the electrode is connected to the instrument, it will be polarized when it is continuously energized for more than 0.5 hours, and the electrode can be calibrated only after it is polarized.

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