pH Controller in Pune – Online Digital pH Controller for Automatic Dosing

UMA Industries supplies a reliable pH Controller in Pune for
continuous pH measurement, automatic acid dosing, alkali dosing, high and low
pH alarms and industrial process control. The panel-mounted controller is
suitable for ETP plants, STP plants, RO plants, neutralisation tanks, chemical
dosing systems, electroplating lines, automotive plants, textile units,
pharmaceutical utilities, food-processing plants and industrial water-treatment
applications.

Industrial pH Controller in Pune

An industrial pH Controller in Pune continuously receives the
electrical signal generated by a compatible pH electrode, converts it into a
digital pH reading and operates external equipment according to programmed
high and low control limits. It can control dosing pumps, alarms, solenoid
valves, contactors or process-interlocking circuits.

A standard pH meter primarily measures and displays the pH value. A pH
controller also provides relay outputs for automatic process correction. The
dual-set-point controller can separately identify an excessively acidic
condition and an excessively alkaline condition.

When the measured value falls below the selected low-pH set point, the related
relay can operate an alkali dosing pump. When the measured value rises above
the selected high-pH set point, the second relay can operate an acid dosing
pump. The exact relay action must be confirmed according to the plant wiring
and dosing-control requirement.

Main Features of pH Controller in Pune

• Continuous online pH measurement for industrial applications
• Measurement range from 0.00 to 14.00 pH
• Digital indication with 0.01 pH resolution
• Bright seven-segment LED display
• Two independent set points for low and high pH
• Two potential-free relay outputs
• Separate control for acid and alkali dosing systems
• Relay operation for alarms, valves and process interlocks
• Two-point calibration using pH 4.00 and pH 7.00 buffers
• Standard BNC connection for a compatible pH electrode
• SET, UP, DOWN and ENTER keys for adjustment
• Panel-mounted PP or ABS enclosure
• Suitable for continuous 24×7 industrial monitoring
• RS485 Modbus RTU model available for automation applications
• Compatible pH electrodes available in different cable lengths

Technical Specifications

The following are standard specifications for the
pH Controller in Pune. The final electrode, cable length,
relay wiring and communication arrangement should be selected according to
the liquid, installation and plant-control requirements.

Working Principle of a Digital pH Controller

A combination pH electrode develops a small electrical potential according
to the hydrogen-ion activity of the process liquid. The controller processes
this signal, applies the stored calibration values and displays the measured
pH on the front-panel LED display.

The operator enters the required low and high set points. When the measured
pH crosses either limit, the corresponding potential-free relay changes state.
The relay can operate a suitably wired dosing pump, alarm, solenoid valve,
contactor or automation-panel input.

Low-pH Control

When the liquid becomes more acidic than the programmed low-pH value, the
low-pH relay can start an alkali dosing pump. The alkaline chemical raises
the pH towards the required operating range. The relay can alternatively
operate a low-pH alarm or process interlock.

High-pH Control

When the measured value becomes more alkaline than the programmed high-pH
value, the high-pH relay can start an acid dosing pump. The acid lowers the
pH towards the selected range. Correct dosing capacity, mixing time and
switching differential are important for preventing chemical overdosing.

Set-Point Adjustment

High-pH Set Point

1. Press the SET key once.
2. The high-pH set value will appear or blink on the display.
3. Use the UP and DOWN keys to select the required value.
4. Press ENTER to save the high-pH setting.

Low-pH Set Point

1. Press the SET key twice.
2. The low-pH set value will appear on the display.
3. Use the UP and DOWN keys to select the required value.
4. Press ENTER to save the low-pH setting.

Before starting automatic operation, check the relay operating direction and
confirm that the acid and alkali pumps are connected to the correct outputs.
Incorrect dosing-pump wiring can move the process pH further away from the
required range.

Calibration of pH Controller in Pune

Regular calibration is essential for accurate operation of a
pH Controller in Pune. Electrode ageing, chemical exposure,
oil, sludge, scale and other deposits can gradually affect the electrode
response. The standard controller uses pH 7.00 and pH 4.00 buffer solutions
for two-point calibration.

Calibration Materials

• Fresh pH 7.00 buffer solution
• Fresh pH 4.00 buffer solution
• Clean distilled or demineralised water
• Separate clean beakers for each buffer
• Soft tissue for gently removing excess water
• Calibration and maintenance record sheet

Step-by-Step Calibration Procedure

1. Switch on the controller and allow the display to stabilise.
2. Remove the electrode carefully from the process liquid.
3. Inspect the glass bulb, cable and BNC connector for damage.
4. Clean deposits using a suitable electrode-cleaning method.
5. Rinse the electrode with clean water or DM water.
6. Do not rub or scratch the sensitive glass bulb.
7. Immerse the electrode in fresh pH 7.00 buffer solution.
8. Wait until the displayed reading becomes stable.
9. Adjust the pH 7 calibration setting until the display shows 7.00.
10. Remove the electrode and rinse it again with clean water.
11. Immerse the electrode in fresh pH 4.00 buffer solution.
12. Wait until the displayed reading becomes stable.
13. Adjust the pH 4 calibration setting until the display shows 4.00.
14. Rinse the electrode and verify it again in pH 7.00 buffer.
15. Reinstall the electrode and check the live process value.
16. Record the calibration date, buffers used and final readings.

Recommended Calibration Frequency

Calibration frequency depends on the process liquid, operating temperature,
contamination and required accuracy. Clean-water applications may require
calibration weekly, fortnightly or monthly. Wastewater, sludge, electroplating
solutions and aggressive chemicals may require more frequent cleaning and
calibration.

Replace the electrode when its response becomes extremely slow, continuously
unstable or impossible to calibrate correctly after proper cleaning.

Uses of pH Controller in Pune

A pH Controller in Pune is used wherever chemical dosing,
wastewater neutralisation, product consistency or water-treatment efficiency
depends on maintaining a selected pH range.

• Effluent Treatment Plants:
  Automatic acid or alkali dosing before wastewater discharge or further
  treatment.
• Sewage Treatment Plants:
  Monitoring and controlling pH during biological treatment and final discharge.
• RO and DM Plants:
  Feed-water conditioning, chemical dosing and treated-water monitoring.
• Automotive Plants:
  Pretreatment lines, component washing systems, paint shops and plant ETPs.
• Electroplating Industries:
  Pretreatment baths, plating solutions, rinse tanks and effluent neutralisation.
• Chemical Industries:
  Reaction vessels, mixing tanks, dosing skids and neutralisation systems.
• Textile and Dyeing Units:
  Bleaching, dyeing, washing, finishing and wastewater-treatment processes.
• Pharmaceutical Industries:
  Utility-water systems, treatment plants and suitable process applications.
• Food, Dairy and Beverage Plants:
  Process control, cleaning systems, utility water and wastewater treatment.
• Paper and Pulp Industries:
  Process-water, pulp-treatment and effluent-control applications.
• Cooling Towers and Boilers:
  Supporting water-treatment and chemical-dosing programmes.
• Swimming Pools and Aquaculture:
  Continuous monitoring and automatic correction of water pH.

Benefits of Automatic pH Control

Installing a pH Controller in Pune helps industrial users
automate pH correction and identify abnormal process conditions without
depending entirely on periodic manual testing.

• Continuous online pH measurement
• Automatic correction of acidic and alkaline conditions
• Separate relay outputs for acid and alkali dosing
• Reduced chemical over-dosing and wastage
• Improved neutralisation-process consistency
• Faster identification of abnormal pH conditions
• Reduced operator dependency
• Improved product and treatment quality
• High and low pH alarm operation
• Easy integration with industrial electrical panels
• RS485 integration available for PLC, HMI and SCADA systems

Selecting a Suitable pH Electrode

The electrode is the sensing component of the pH-control system. Sensor
selection should consider the process liquid, operating temperature, pressure,
chemical compatibility, contamination, suspended solids, mounting arrangement
and required cable length.

• General-purpose glass electrode for clean water
• Industrial immersion electrode for tanks and sumps
• Flow-through electrode for pipelines and sample chambers
• Double-junction electrode for contaminated process liquids
• Flat-surface electrode for viscous materials
• High-temperature electrode for heated process solutions
• Long-cable electrode for deep tanks and remote installations
• Chemical-resistant electrode for aggressive industrial liquids

Installation and Wiring Instructions

Correct installation of the pH Controller in Pune and its
electrode helps reduce fluctuating readings, premature electrode failure and
incorrect dosing operation.

1. Install the controller inside a clean and dry electrical panel.
2. Protect it from water spray, corrosive fumes and excessive heat.
3. Mount the electrode where the process liquid is properly mixed.
4. Do not install the sensor directly beside a chemical injection point.
5. Keep the electrode glass bulb immersed during continuous measurement.
6. Avoid positions where air bubbles can collect around the sensing bulb.
7. Keep the sensor cable away from motors, VFDs and high-voltage wiring.
8. Provide proper electrical earthing to reduce unstable readings.
9. Use shielded signal wiring where electrical interference is present.
10. Use a contactor or interposing relay when the pump load exceeds the
    controller relay rating.
11. Install non-return valves in the acid and alkali dosing lines.
12. Use tubing compatible with the selected dosing chemical.
13. Provide sufficient mixing time after chemical injection.
14. Confirm acid and alkali pump direction before automatic operation.

Maintenance and Safety Precautions

• Never allow the pH electrode glass bulb to remain dry.
• Store the electrode in the recommended storage solution.
• Do not permanently store the electrode in distilled or DM water.
• Clean deposits with a solution suitable for the contamination.
• Do not scratch or aggressively wipe the glass sensing bulb.
• Use fresh and uncontaminated buffer solutions.
• Never return used buffer to its original container.
• Inspect the electrode cable and BNC connector regularly.
• Keep moisture and chemical leakage away from the control panel.
• Isolate the electrical supply before changing relay wiring.
• Use suitable PPE while handling acids, alkalis and chemicals.
• Maintain calibration and electrode-replacement records.

pH Controller in Pune and Surrounding Industrial Areas

UMA Industries supplies pH Controller in Pune products to
ETP contractors, OEM panel builders, automation companies, water-treatment
companies, laboratories and industrial plants throughout Pune and nearby
Maharashtra industrial regions.

Major Pune Industrial Areas

• Pimpri-Chinchwad industrial belt
• Bhosari MIDC
• Chakan MIDC
• Talegaon MIDC
• Ranjangaon MIDC
• Talawade industrial area
• Moshi and Chikhali industrial areas
• Hadapsar Industrial Estate
• Ramtekdi Industrial Area
• Pirangut Industrial Area
• Hinjawadi and Marunji
• Sanaswadi and Shikrapur
• Jejuri MIDC
• Kurkumbh MIDC
• Baramati MIDC
• Shirwal industrial area

Surrounding Industrial Cities

• Pimpri-Chinchwad:
  Automotive, engineering, fabrication and water-treatment industries.
• Chakan:
  Automobile assembly, component manufacturing, coating and engineering plants.
• Ranjangaon:
  Automotive, appliance, pharmaceutical and industrial manufacturing units.
• Talegaon:
  Automotive components, fabrication, logistics and process industries.
• Pirangut:
  Chemical, engineering, food-processing and manufacturing companies.
• Baramati:
  Engineering, automotive, dairy, food and agricultural-equipment industries.
• Satara:
  Foundries, fabrication, engineering and automotive-component plants.
• Ahmednagar:
  Automobile, engineering, metal-processing and agricultural-equipment units.
• Nashik:
  Pharmaceutical, food, automotive, electrical and engineering industries.
• Chhatrapati Sambhajinagar:
  Automotive, pharmaceutical, electrical and process industries.
• Kolhapur:
  Foundries, castings, engineering and automobile-component manufacturers.

Other Products in the pH Meter and Controller Category

Buyers selecting a pH Controller in Pune can compare these
related UMA Industries products for relay control, Modbus communication,
analogue output, laboratory testing and replacement electrodes.

• 
  Digital pH Controller Online
  
  – Two set points and two potential-free relay outputs for automatic dosing.
• 
  RS485 Modbus RTU pH Controller
  
  – Communication-enabled controller for PLC, HMI, SCADA and data logging.
• 
  Digital pH Meter Online
  
  – Panel-mounted meter for continuous industrial pH measurement.
• 
  Modbus 485 pH Meter Online
  
  – Online pH meter with RS485 Modbus RTU communication.
• 
  Digital pH Meter with 4–20 mA Output
  
  – Analogue-output instrument for PLC, SCADA and process recorders.
• 
  Digital pH Meter with 0–10 VDC Output
  
  – Voltage-output pH meter for compatible industrial control systems.
• 
  Portable Table-Top pH Meter
  
  – Laboratory instrument for sample testing and quality-control work.
• 
  Glass pH Sensor with 1-Metre Cable
  
  – Replacement electrode for compatible pH meters and controllers.
• 
  Industrial pH Sensor with 3-Metre Cable
  
  – Industrial electrode for tanks, treatment plants and process systems.
• 
  Industrial pH Sensor with 5-Metre Cable
  
  – Longer-cable electrode for remote tanks and measurement locations.

External Technical Reference

For additional technical information about hydrogen-ion activity, the pH
scale and the importance of pH in water-quality monitoring, visit the

United States Environmental Protection Agency technical reference on pH
.

Frequently Asked Questions

Order pH Controller in Pune

To select the correct pH Controller in Pune, share your
process-liquid details, pH-control range, electrode installation, dosing-pump
capacity, required cable length and communication requirement. UMA Industries
can recommend a suitable controller, pH electrode and automatic dosing-control
arrangement for your application.