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

UMA Industries supplies reliable pH Controller in Mumbai for
continuous pH measurement, high and low pH control, acid dosing, alkali dosing,
alarm operation and industrial process automation. The controller is suitable
for ETP plants, STP plants, RO plants, neutralisation tanks, chemical dosing
systems, electroplating units, textile processing, pharmaceutical utilities,
food plants and industrial water-treatment applications.

Industrial pH Controller in Mumbai

An industrial pH Controller in Mumbai continuously receives
the signal from a compatible pH electrode, converts it into a readable pH value
and operates control relays according to the programmed set points. Unlike a
basic pH indicator that only displays the measured value, a controller can
switch dosing pumps, alarms, solenoid valves or electrical interlocks.

The standard dual-set-point model provides separate low-pH and high-pH control.
When the liquid becomes too acidic, one relay can start an alkali dosing system.
When the liquid becomes too alkaline, the second relay can start an acid dosing
system. The final relay action must always be confirmed according to the plant
wiring, dosing direction and process-control requirement.

Main Features of pH Controller in Mumbai

• Continuous online pH measurement from 0.00 to 14.00 pH
• Digital indication with 0.01 pH display resolution
• Two independent set points for low and high pH control
• Two potential-free relay outputs
• Separate control for acid and alkali dosing pumps
• Relay operation for alarm, valve or process interlock
• Two-point calibration using pH 4.00 and pH 7.00 buffers
• Standard BNC connection for a compatible pH electrode
• Bright seven-segment LED display
• SET, UP, DOWN and ENTER keys for adjustment
• Panel-mounted enclosure for industrial control panels
• Suitable for continuous water and process-liquid monitoring

Technical Specifications

The following specifications apply to the standard online
pH Controller in Mumbai. Sensor construction, cable length,
relay logic and optional communication should be selected according to the
process liquid and automation requirement.

Working Principle of an Online pH Controller

A pH electrode develops a small electrical signal according to hydrogen-ion
activity in the process liquid. The controller receives this signal and shows
the corresponding pH value on the digital display. A value below 7 represents
an acidic condition, 7 is neutral and a value above 7 represents an alkaline
condition.

The operator enters the required low and high set points. When the measured
value crosses a programmed limit, the related relay changes state. This relay
can operate a suitably wired dosing pump, alarm, contactor, interposing relay
or process interlock.

High-current pumps should not be connected directly unless their electrical
load is within the controller relay rating. An appropriate contactor or
interposing relay should be used for larger dosing pumps.

Low-pH and High-pH Control

Low-pH Relay Operation

When the process liquid falls below the required pH limit, the low-pH relay can
start an alkali dosing pump or activate an alarm. The alkali raises the pH toward
the required operating range. Adequate mixing time should be provided before
additional chemical is dosed.

High-pH Relay Operation

When the process liquid rises above the required pH limit, the high-pH relay can
operate an acid dosing pump, valve or alarm. Correct hysteresis, dosing rate and
mixing delay help prevent rapid relay switching and chemical overdosing.

Calibration of pH Controller in Mumbai

Regular calibration is essential for dependable operation of a
pH Controller in Mumbai. Electrode ageing, coating, chemical
exposure and contamination can gradually change the sensor response. Fresh pH
7.00 and pH 4.00 buffer solutions should be used for standard two-point
calibration.

Calibration Materials

• Fresh pH 7.00 buffer solution
• Fresh pH 4.00 buffer solution
• Clean distilled or demineralised water
• Two clean calibration beakers
• Soft tissue for gently removing excess liquid

Step-by-Step Calibration Procedure

1. Switch on the controller and allow the instrument to stabilise.
2. Check the electrode bulb, cable and BNC connector for damage.
3. Rinse the electrode with clean water or DM water.
4. Do not rub or scratch the sensitive glass bulb.
5. Immerse the electrode in fresh pH 7.00 buffer solution.
6. Wait until the displayed reading becomes stable.
7. Adjust the pH 7 calibration setting until the display shows 7.00.
8. Remove the electrode and rinse it again with clean water.
9. Immerse the electrode in fresh pH 4.00 buffer solution.
10. Wait for a stable reading and adjust the pH 4 setting to 4.00.
11. Rinse the electrode and recheck it in pH 7.00 buffer.
12. Reinstall the electrode and confirm normal process operation.
13. Record the calibration date, buffer values and final readings.

Recommended Calibration Frequency

Calibration frequency depends on the application, process contamination and
required accuracy. A controller used with clean water may need less frequent
calibration than one used in wastewater, sludge, plating solutions or aggressive
chemicals. The electrode should be cleaned and calibrated whenever readings
become slow, unstable or doubtful.

Applications of pH Controller in Mumbai

The pH Controller in Mumbai is used where automatic
neutralisation, chemical dosing, water-quality control or process consistency
depends on maintaining a defined pH range.

• Effluent Treatment Plants:
  Acid and alkali dosing before discharge or further treatment.
• Sewage Treatment Plants:
  Monitoring and control during biological and final treatment.
• RO and DM Plants:
  Feed-water conditioning and chemical dosing control.
• Chemical Industries:
  Neutralisation tanks, reaction vessels and dosing skids.
• Electroplating Plants:
  Pretreatment baths, rinse water, process tanks and effluent systems.
• Textile and Dyeing Units:
  Bleaching, dyeing, washing, finishing and wastewater treatment.
• Pharmaceutical Utilities:
  Process water, cleaning solutions and treatment systems.
• Food, Dairy and Beverage Plants:
  Process monitoring, utility water and wastewater control.
• Cooling Towers and Boilers:
  Water-treatment and chemical-dosing applications.
• Paper and Pulp Plants:
  Process-water and wastewater pH control.

Benefits of Automatic pH Control

• Continuous measurement without repeated manual sampling
• Automatic correction of acidic and alkaline conditions
• Reduced risk of acid or alkali overdosing
• Improved neutralisation and treatment consistency
• Separate high-pH and low-pH alarm control
• Reduced operator dependency
• Improved process repeatability and quality control
• Protection of downstream equipment and treatment stages
• Easy integration with dosing pumps and control panels

pH Electrode Selection

Correct sensor selection is essential for stable performance. The electrode
should be selected according to the liquid, temperature, pressure, contamination,
suspended solids, chemical compatibility, cable length and mounting method.

• General-purpose glass electrode for clean water
• Industrial immersion electrode for tanks and sumps
• Flow-through electrode for pipelines and sampling chambers
• Double-junction electrode for contaminated liquids
• Flat-surface electrode for viscous materials
• High-temperature electrode for heated process solutions
• Long-cable electrode for remote installation

Installation Instructions

1. Install the controller inside a clean and dry electrical panel.
2. Protect it from direct water spray, acid fumes and excessive humidity.
3. Mount the electrode where the liquid is properly mixed.
4. Do not install the sensor directly beside the chemical injection point.
5. Keep the sensing bulb immersed during normal measurement.
6. Keep the electrode cable away from motor, VFD and high-voltage wiring.
7. Provide proper electrical earthing to minimise unstable readings.
8. Use a contactor or interposing relay for loads above the relay rating.
9. Use chemically compatible dosing tubes and non-return valves.
10. Verify acid and alkali pump direction before enabling automatic control.

Maintenance and 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 using a suitable electrode-cleaning solution.
• Do not use abrasive tools on the glass bulb.
• Use fresh, uncontaminated buffers for calibration.
• Never return used buffer solution to its original bottle.
• Inspect the sensor cable and BNC connector for moisture or damage.
• Replace the electrode when stable calibration is no longer possible.
• Wear suitable PPE while handling acids, alkalis and process chemicals.

Supply of pH Controller in Mumbai and Nearby Industrial Areas

UMA Industries supplies pH Controller in Mumbai to OEM panel
builders, ETP contractors, automation companies, laboratories and industrial
users throughout Mumbai, Thane, Navi Mumbai and surrounding Maharashtra regions.

Mumbai and Metropolitan Industrial Areas

• Andheri East, Marol, Saki Naka and Chandivali
• Goregaon, Malad, Kandivali and Borivali
• Wagle Industrial Estate, Thane
• Thane-Belapur Road and TTC Industrial Area
• Rabale, Mahape, Turbhe, Pawane and Kopar Khairane
• Taloja MIDC, Kalamboli and Panvel
• Dombivli MIDC, Kalyan and Bhiwandi
• Ambernath MIDC and Badlapur
• Vasai, Waliv and Sativali industrial areas
• Boisar and Tarapur MIDC
• Patalganga, Rasayani and Khopoli

Surrounding Industrial Cities

• Thane:
  Chemical, engineering and water-treatment plants.
• Navi Mumbai:
  Process industries, laboratories and OEMs.
• Taloja:
  Chemical, pharmaceutical and ETP applications.
• Dombivli:
  Chemical, textile and manufacturing units.
• Vasai-Virar:
  Fabrication, plastics and engineering industries.
• Boisar and Tarapur:
  Chemical, textile and pharmaceutical plants.
• Raigad:
  Petrochemical and industrial process plants.
• Pune and Chakan:
  Automotive and engineering industries.
• Nashik:
  Pharmaceutical, food and engineering industries.

Related pH Controllers, Meters and Sensors

Customers selecting a pH Controller in Mumbai can compare the
following related UMA Industries products:

• 
  Digital pH Controller Online
  
  – Two set points and dual potential-free relay outputs for automatic dosing.
• 
  pH Controller with Two Relay Outputs
  
  – Dual-relay model for low and high pH control.
• 
  RS485 Modbus RTU pH Controller
  
  – Communication model for PLC, HMI and SCADA systems.
• 
  Digital pH Meter Online
  
  – Panel-mounted meter for continuous pH indication.
• 
  Digital pH Meter with 4–20 mA Output
  
  – Analogue-output model for PLC, recorder and process monitoring.
• 
  Digital pH Meter with 0–10 VDC Output
  
  – Voltage-output model for compatible automation systems.
• 
  Portable Table-Top pH Meter
  
  – Instrument for laboratory samples and quality-control testing.
• 
  pH Sensor with 5-Metre Cable
  
  – Replacement electrode for compatible pH meters and controllers.

External Technical Reference

For additional information about the pH scale and the effect of pH on water
chemistry, refer to the

United States Environmental Protection Agency technical reference on pH
.

Frequently Asked Questions

Request a Quotation for pH Controller in Mumbai

To select the correct pH Controller in Mumbai, provide your
process details, measuring range, liquid temperature, electrode installation,
required set points, relay loads and communication requirement. UMA Industries
can recommend a suitable controller, electrode and dosing-control arrangement
for your application.