UMA Industries manufactures and supplies digital ph controller india from its manufacturing unit in Village Sunped, Ballabgarh, Faridabad, Haryana, India. This panel-mounted controller is designed for online pH monitoring with automatic control of dosing pumps and alarms in ETP, STP, RO water treatment, chemical dosing and other industrial process lines. It is meant for applications where the pH reading should not remain only on the display, but should also trigger a controlled response when the process moves beyond the chosen limit.
Why choose this digital ph controller india for industrial pH control?
This model combines measurement and control in one unit. The controller reads pH continuously through a standard probe and uses two independent set points to support low-pH and high-pH actions. That makes it suitable for neutralisation tanks, dosing skids and treatment systems where one relay may be used for acid dosing, another for alkali dosing, or both may be used for alarms depending on the wiring philosophy of the plant. The bright LED display, front-panel keys and relay outputs are practical for operators who need stable day-to-day control rather than a simple indication meter.
UMA Industries also supplies and provides technical support to customers across India, which is helpful for OEMs, panel builders, maintenance teams and plant operators who need selection guidance, wiring coordination and repeat supply for process use.
For buyers comparing control styles, you can review Digital pH Controller Online, ph Controller Panel Mount and pH Controller 1 Relay to understand different relay and mounting options before finalising the panel design.
Applications where this controller is commonly considered
This digital ph controller india is a practical choice for industrial environments that require continuous pH observation and automatic correction. Common applications listed for this model include Effluent Treatment Plants, Sewage Treatment Plants, neutralisation tanks, chemical dosing systems, RO feed water conditioning, cooling tower and boiler water treatment, textile dyeing and processing, electroplating and surface treatment, and food, beverage and pharmaceutical utilities. These are settings where pH variation can affect product quality, discharge compliance, corrosion control or process stability, so an automatic relay output can help reduce manual intervention.
For plant teams, the two-set-point arrangement is useful because low and high pH conditions can be handled differently. In practice, this means a user can arrange one contact for one side of control and another contact for the opposite side, according to the dosing strategy used in the plant. That flexibility is especially valuable in treatment systems where process conditions can shift gradually and the operator wants a clear, repeatable switching response.
Because the product is manufactured in Faridabad, it is also relevant for industrial buyers in North India who need quick technical communication and a local manufacturing reference for quotation, repeat ordering and integration into new panels.
Why Choose digital ph controller india
Many buyers are looking for a controller that can do more than show a number on the display. They want a practical control instrument that supports automatic response, straightforward calibration and panel installation. This model addresses those needs with dual relays, a simple keypad interface and standard pH probe input. It is therefore suitable when the application calls for automatic pH correction, alarm switching or interlock-style response within a control panel.
How the control logic works in daily operation
The controller continuously measures the process pH through the connected electrode. When the measured value crosses a preset threshold, the corresponding relay changes state. Depending on the wiring and process plan, the relay can be used to start or stop a dosing pump, energise an alarm, or operate another control device. This approach is useful in neutralisation tanks and treatment lines where pH needs to stay within an operating band rather than at a single exact number.
Low pH set point logic is used when the process falls below the selected limit. In such a case, the relay may be assigned to alkali dosing or to a low-pH alarm. High pH set point logic is used when the process rises above the selected limit. In such a case, the relay may be assigned to acid dosing or a high-pH alarm. The exact use depends on the process chemistry and the wiring selected by the customer during installation.
The important point is that the controller gives a practical switching response based on actual pH measurement. That makes it suitable for plant areas where operators want a repeatable electrical output from the measured value rather than manual pump intervention at every correction cycle.
Technical overview and selection details
The source specifications for this controller list a pH range of 0.00 to 14.00 pH, 0.01 pH resolution, 2-point calibration, a standard pH probe or electrode input through BNC connector, two set points, two potential-free relay outputs, a bright 7-segment LED display, a 220–230 V AC power supply, and a panel-mounted body with PP / ABS construction. The panel size is given as 96 × 96 × 85 mm. These details make the unit easy to consider for new control panels as well as replacement work where the existing control philosophy already uses relay-based pH switching.
Published prices on the website are company-confirmed. Product size, capacity, internal and external dimensions, power supply, optional controls/accessories, delivery schedule and mode of transport may be finalized or changed according to customer requirements in the quotation or proforma invoice. This is useful when the controller is being matched with a specific dosing skid, a panel layout, or a plant-specific relay arrangement.
If your requirement is closer to a different operating style, you can also compare PH Controller with Dosing Quantity and delay and RS 485 Modbus RTU ph Controller before selecting the final model. That comparison helps buyers decide whether they need only local relay switching, or a controller with additional integration and dosing logic.
Installation guidance before commissioning
Installation should begin with proper panel planning. Since this is a panel-mounted controller, the enclosure should be placed where the display is easy to read and the keypad is easy to reach for set-point changes. Wiring should be done by qualified electrical personnel, with careful separation of low-level probe signal wiring from higher-power relay and supply wiring where possible. This helps reduce disturbance in the measurement circuit and supports more stable operation.
The pH probe should be installed at a representative process point where the sample or liquid flow is suitable for measurement. In many systems, the best position is one that provides consistent immersion, avoids dead zones and allows the electrode to respond to actual process conditions rather than stagnant liquid. Before handover, confirm that the relay action, display response, set points and connected pump or alarm logic all work as intended. A short functional check during commissioning can save time later during plant operation.
For related panel and control formats, the comparison pages PH Controller 2 Point Calibration 2 Relay Out and ph Controller Panel Mount can help when reviewing installation style and output arrangement.
Calibration procedure and practical verification
Calibration is a key part of maintaining reliable pH control. The supplied source specifies 2-point calibration using pH 7.00 and pH 4.00 buffers. A practical sequence is to remove the probe from the process, rinse it with distilled or DM water, place it in the pH 7.00 buffer and allow the reading to stabilise before adjusting the neutral calibration point. After that, rinse again, move the probe to the pH 4.00 buffer and adjust the second calibration point until the reading is stable. If required, the process may be repeated once more to confirm consistency.
Calibration should always be done with clean buffer solutions and a healthy probe. The controller can only perform as well as the electrode condition allows, so a weak, contaminated or dried-out probe will affect the usefulness of any set point. For this reason, teams often include calibration checks in routine maintenance rather than waiting for a process problem to appear.
For general pH measurement guidance, the following reference may be helpful: US EPA Method 9040C — pH Electrometric Measurement. This reference is for measurement guidance only and does not imply product approval or certification.
What buyers should check during calibration
Before closing the panel, confirm the probe connector, the controller display response, the relay indication and the stability of the reading in both calibration buffers. If the displayed value drifts quickly, the issue may be related to probe condition, cable routing, process contamination or poor buffer handling rather than the controller itself. Proper calibration discipline improves confidence in automatic dosing and reduces unnecessary corrections.
Electrode care, maintenance and operating life considerations
The pH electrode is the sensing element that directly touches the process, so electrode care is a major part of maintenance. After removing the probe for servicing, rinse it gently and avoid allowing the tip to dry unnecessarily. Store and handle the probe as recommended by the plant maintenance practice and keep the connector area clean. If the reading appears unstable or noisy, inspect the electrode first, then check the cable and connector, and only then review the controller settings.
Routine maintenance should also include inspection of relay terminals, panel wiring and the enclosure condition. Industrial areas can expose instruments to dust, humidity and vibration, so a quick visual inspection during service rounds can help maintain dependable operation. When the controller is part of a larger dosing system, it is good practice to verify that the dosing pump, valve or alarm connected to each relay still behaves as expected after maintenance work.
Because this controller is used in continuous process environments, many buyers also consider the surrounding installation details: panel ventilation, safe cable routing, stable power supply and easy access for calibration. These basic precautions support stable service over the long term without claiming any special performance beyond what is stated in the product information.
Safety and operating precautions
Always isolate power before wiring, changing connections or carrying out service work. Use trained electrical personnel for installation and verify that the relay contacts are connected to the intended load. The controller should be treated as a process instrument used within the plant’s own safety and control arrangement, not as a replacement for site-specific interlocks or engineering safeguards where those are required.
During operation, avoid forcing calibration changes without understanding the process condition. If the pH reading is unexpectedly high or low, first inspect the probe location, sample condition, process flow and reagent system before adjusting the controller set points. Careful review helps prevent over-dosing and unnecessary equipment cycling. This is especially important in dosing applications where the controller may repeatedly switch pumps if the process band is too narrow or the electrode is not responding correctly.
Why this model is practical for OEMs, panel builders and maintenance teams
This digital ph controller india is suitable for customers who want a straightforward industrial controller with dual relay output and standard calibration. OEMs and panel builders can use it in new treatment skids, while maintenance teams may select it as a replacement for existing relay-based pH control panels. The compact panel format, keypad operation and LED display make it easier to integrate into a working control cabinet without unnecessary complexity.
For applications that need alternative logic, buyers can compare RS 485 Modbus RTU ph Controller and PH Controller with Dosing Quantity and delay. If the requirement is a simpler configuration, pH Controller 1 Relay may be more suitable. These comparison pages can help during quotation review and technical selection.
FAQs for buyers comparing pH controllers
Is this controller only for display, or can it switch pumps too?
It is designed for both measurement and switching. The two potential-free relay outputs can be used for dosing pumps or alarms according to the wiring arrangement.
Which calibration buffers are specified?
The source specifies 2-point calibration with pH 7.00 and pH 4.00 buffers.
Can it be used in ETP and STP plants?
Yes. ETP, STP, RO water treatment, chemical dosing and other process industries are included in the listed application areas.
What display and supply does it use?
It uses a bright 7-segment LED display and the listed power supply is 220–230 V AC.
Is it a panel-mounted instrument?
Yes. The product is described as panel mounted, with a panel size of 96 × 96 × 85 mm in the supplied details.
Does UMA Industries provide support across India?
Yes. UMA Industries supplies and provides technical support to customers across India.
What should I confirm before requesting a quotation?
Confirm the application, relay load, probe type, panel space, wiring preference and any special control requirement so the quotation matches your site need.
How do I decide between this and a Modbus controller?
If your plant only needs local relay switching, this model is a good fit. If communication or integration is needed, review the Modbus-based option before finalising.
Quotation, dispatch and support information
For price confirmation, project selection, dealer enquiry or OEM sourcing, contact UMA Industries with your process details. The product is manufactured at UMA Industries’ unit in Village Sunped, Ballabgarh, Faridabad, Haryana, India, and UMA Industries supplies and provides technical support to customers across India. Ready-stock compact products, controllers, spares and accessories may be dispatched by air courier within 3 working days, subject to availability, payment confirmation, destination serviceability and carrier schedules. Delivery timelines for complete salt spray chambers and other large equipment are confirmed separately according to model, capacity, packing and freight mode.
If you are shortlisting a dependable industrial pH control instrument, this digital ph controller india offers practical dual-set-point switching, panel mounting and routine calibration convenience. It is a suitable option for buyers who want a control-oriented pH instrument for plant use, backed by manufacturer support and quotation flexibility. Share your application details so the model, wiring and related requirements can be finalized correctly in the quotation or proforma invoice.
Selection Guidance for digital ph controller india
Use the verified product configuration, installation conditions and required control functions when selecting digital ph controller india.
digital ph controller india supports practical industrial monitoring and process-control requirements.
Correct installation and routine verification improve the dependable use of digital ph controller india.
Buyers should confirm the required input, output and enclosure configuration before ordering digital ph controller india.
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