Overview:

PH-110 industrial online pH meter is an intelligent upgraded product of industrial acidity meter, which can continuously monitor the acidity and alkalinity of water in real time, measure and control the pH value of sewage continuously. This device is suitable for urban sewage treatment plants, chemical industry, printing and dyeing, papermaking, pharmaceuticals, electroplating, and environmental protection fields.

Based on the environment and characteristics of the water industry, combined with international power supply standards, electrical design specifications for special environments have been considered, and 220V AC and safe low-voltage 24V AC and 24V DC power supply options have been added.

1、 The main features of PH-110 industrial pH meter are:

Factory standard configuration includes a Chinese interface, a language based menu, and the ability to switch between Chinese and English

Capable of pH/ORP measurement, upper and lower limit control, current output, and digital communication

² can be set to automatic temperature compensation or manual compensation

PH high limit alarm, low limit alarm dual relay, hysteresis can be freely adjusted

Isolation transmission port for instrument mode, with a maximum loop resistance greater than 300 Ω

The sound alarm function can be turned on or off through interface options

LCD backlight with energy-saving mode selectable, timed automatic shutdown

High performance CPU with excellent electromagnetic compatibility

Password management function to prevent misoperation by non professionals

Industrial online pH meter electrode

IIIndustrial pH meterMain technical parameters and indicators:

Measurement 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: 128 * 64 dot matrix LCD

Temperature compensation: 0-100 ℃ manual/automatic (NTC10K)

Signal output: 4-20mA isolation protection output maximum loop resistance 300 Ω

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

Dimensions: 96 × 96 × 110mm (height × width × depth)

Hole size: 92 × 92mm (height × width)

3、 Industrial online pH usage and maintenance:

1. There is an appropriate amount of 3.3 M KCL solution in the protective bottle at the front end of the industrial online pH and acidity meter electrode. The electrode tip is soaked in it to maintain the activation of the glass bulb and liquid interface. When measuring, loosen the protective bottle, remove the electrode, and rinse with deionized water before use.

2. Before measurement, attention should be paid to throwing away the bubbles inside the glass bubble, otherwise it will cause measurement errors. During measurement, the electrode should be stirred in the test solution and placed still to accelerate the response.

3. Check if the joint is dry and clean. If there is any contamination, use anhydrous alcohol to wipe it clean and blow dry before use.

4. It is recommended to use the two-point method to calibrate the electrode, usually by first calibrating the position with pH 6.86 buffer solution, and then determining the slope with pH 4.01 or pH 9.18 buffer solution.

5. After use, clean the electrode and insert it into a protective bottle, then tighten the bottle cap to prevent the solution from leaking out.

6. The electrode should be cleaned regularly. If the electrode glass bulb is contaminated with the PTFE ring liquid interface, the following reagents can be used for cleaning.

A Surface active agent cleaning.

B Calcium precipitates or metal hydroxides can be cleaned with 10% dilute hydrochloric acid.

C Sulfide precipitation can be cleaned with 10% dilute hydrochloric acid.

D Protein attachments can be cleaned with a mixture of 10% dilute hydrochloric acid and pepsin.