Flow, pH & Conductivity Meters, Transmitters & Controllers

Centro offers a wide range of flow, pH, and conductivity meters, transmitters, and controllers to meet the demands of various industrial and commercial applications. From monitoring flow rates and maintaining chemical balance for fluid quality and consistency, our solutions are engineered for precision, reliability, and seamless integration. We provide products such as magnetic and ultrasonic flow meters, pH controllers, and conductivity transmitters designed to optimize performance in industries like water treatment, food and beverage, chemical processing, and pharmaceuticals.


Whether you need accurate measurements, durable equipment, or easy system integration, Centro has the expertise and products to support your operations. Explore our selection online or contact our team to find the right solution for your application and ensure peak system efficiency.

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The GF Signet 2751 DryLoc pH/ORP Smart Sensor Electronics module converts the millivolt signal from a pH or ORP electrode into a digital S3L signal for Signet 9900 or 9950 transmitters. It features automatic temperature compensation, on-board calibration storage, and diagnostic capabilities. The DryLoc connector provides reliable, weatherproof connection to GF Signet pH/ORP electrodes. This specific variant (3-2751-3-025) is configured with 25 mm insertion/cable.

$654.15$737.00

You save 11%
Available for Purchase

Subject to factory lead times

The GF Signet 2751 DryLoc pH/ORP Smart Sensor Electronics module converts the millivolt signal from a pH or ORP electrode into a digital S3L signal for Signet 9900 or 9950 transmitters. It features automatic temperature compensation, on-board calibration storage, and diagnostic capabilities. The DryLoc connector provides reliable, weatherproof connection to GF Signet pH/ORP electrodes. This specific variant (3-2751-3-050) is configured with 50 mm insertion/cable.

$736.70$830.00

You save 11%
Available for Purchase

Subject to factory lead times

The GF Signet 2751 DryLoc pH/ORP Smart Sensor Electronics module converts the millivolt signal from a pH or ORP electrode into a digital S3L signal for Signet 9900 or 9950 transmitters. It features automatic temperature compensation, on-board calibration storage, and diagnostic capabilities. The DryLoc connector provides reliable, weatherproof connection to GF Signet pH/ORP electrodes. This specific variant (3-2751-3-100) is configured with 100 mm insertion.

$901.79$1,016.00

You save 11%
Available for Purchase

Subject to factory lead times

The GF Signet 2751 DryLoc pH/ORP Smart Sensor Electronics module converts the millivolt signal from a pH or ORP electrode into a digital S3L signal for Signet 9900 or 9950 transmitters. It features automatic temperature compensation, on-board calibration storage, and diagnostic capabilities. The DryLoc connector provides reliable, weatherproof connection to GF Signet pH/ORP electrodes.

$626.64$706.00

You save 11%
Available for Purchase

Subject to factory lead times

The GF Signet 2751 DryLoc pH/ORP Smart Sensor Electronics module converts the millivolt signal from a pH or ORP electrode into a digital S3L signal for Signet 9900 or 9950 transmitters. It features automatic temperature compensation, on-board calibration storage, and diagnostic capabilities. The DryLoc connector provides reliable, weatherproof connection to GF Signet pH/ORP electrodes.

$811.19$952.00

You save 15%
Available for Purchase

Subject to factory lead times

The GF Signet 3-2754-1 is a Sensor/Instrument for industrial process measurement and control. This product is designed for use in water treatment, chemical processing, and related industrial applications requiring reliable process measurement measurement. It is compatible with the GF Signet product ecosystem and meets industrial standards for performance and durability.

$541.43$610.00

You save 11%
Available for Purchase

Subject to factory lead times

The GF Signet 3-2756-WTP is a Sensor/Instrument for industrial process measurement and control. This product is designed for use in water treatment, chemical processing, and related industrial applications requiring reliable process measurement measurement. It is compatible with the GF Signet product ecosystem and meets industrial standards for performance and durability. Configured with wet-tap assembly.

$547.64$617.00

You save 11%
Available for Purchase

Subject to factory lead times

The GF Signet 3-2756-WTP-1 is a Sensor/Instrument for industrial process measurement and control. This product is designed for use in water treatment, chemical processing, and related industrial applications requiring reliable process measurement measurement. It is compatible with the GF Signet product ecosystem and meets industrial standards for performance and durability. Configured with wet-tap assembly.

$589.36$664.00

You save 11%
Available for Purchase

Subject to factory lead times

The GF Signet 3-2757-WTP is a Sensor/Instrument for industrial process measurement and control. This product is designed for use in water treatment, chemical processing, and related industrial applications requiring reliable process measurement measurement. It is compatible with the GF Signet product ecosystem and meets industrial standards for performance and durability. Configured with wet-tap assembly.

$613.32$691.00

You save 11%
Available for Purchase

Subject to factory lead times

The GF Signet 3-2757-WTP-HDPE-PR is a Sensor/Instrument for industrial process measurement and control. This product is designed for use in water treatment, chemical processing, and related industrial applications requiring reliable process measurement measurement. It is compatible with the GF Signet product ecosystem and meets industrial standards for performance and durability. Configured with wet-tap assembly, HDPE material.

$827.23$932.00

You save 11%
Available for Purchase

Subject to factory lead times

The GF Signet 2759 pH/ORP System Tester is a diagnostic tool for testing and troubleshooting complete Signet pH and ORP measurement systems. It can simulate electrode signals to verify transmitter and electronics performance, helping technicians isolate faults quickly without removing electrodes from the process.

$651.49$734.00

You save 11%
Available for Purchase

Subject to factory lead times

The GF Signet 2759 pH/ORP System Tester is a diagnostic tool for testing and troubleshooting complete Signet pH and ORP measurement systems. It can simulate electrode signals to verify transmitter and electronics performance, helping technicians isolate faults quickly without removing electrodes from the process.

$140.24$158.00

You save 11%
Available for Purchase

Subject to factory lead times

The GF Signet 2760 Pressure Sensor is an insertion-style transducer for liquid pressure monitoring in industrial pipe systems. Using a piezoresistive sensing element, it measures gauge pressure with S3L digital output to Signet 9900/9950 transmitters. Available in pressure ranges from 0-15 to 0-150 psi (0-1 to 0-10 bar).

$545.87$615.00

You save 11%
Available for Purchase

Subject to factory lead times

The GF Signet 2760 Pressure Sensor is an insertion-style transducer for liquid pressure monitoring in industrial pipe systems. Using a piezoresistive sensing element, it measures gauge pressure with S3L digital output to Signet 9900/9950 transmitters. Available in pressure ranges from 0-15 to 0-150 psi (0-1 to 0-10 bar).

$587.58$662.00

You save 11%
Available for Purchase

Subject to factory lead times

The GF Signet 2760 Pressure Sensor is an insertion-style transducer for liquid pressure monitoring in industrial pipe systems. Using a piezoresistive sensing element, it measures gauge pressure with S3L digital output to Signet 9900/9950 transmitters. Available in pressure ranges from 0-15 to 0-150 psi (0-1 to 0-10 bar). This specific variant (3-2760-11-025) is configured with 25 mm insertion/cable.

$655.93$739.00

You save 11%
Available for Purchase

Subject to factory lead times

The GF Signet 2760 Pressure Sensor is an insertion-style transducer for liquid pressure monitoring in industrial pipe systems. Using a piezoresistive sensing element, it measures gauge pressure with S3L digital output to Signet 9900/9950 transmitters. Available in pressure ranges from 0-15 to 0-150 psi (0-1 to 0-10 bar).

$545.87$615.00

You save 11%
Available for Purchase

Subject to factory lead times

The GF Signet 2760 Pressure Sensor is an insertion-style transducer for liquid pressure monitoring in industrial pipe systems. Using a piezoresistive sensing element, it measures gauge pressure with S3L digital output to Signet 9900/9950 transmitters. Available in pressure ranges from 0-15 to 0-150 psi (0-1 to 0-10 bar).

$587.58$662.00

You save 11%
Available for Purchase

Subject to factory lead times

The GF Signet 3-2764-1 is a Sensor/Instrument for industrial process measurement and control. This product is designed for use in water treatment, chemical processing, and related industrial applications requiring reliable process measurement measurement. It is compatible with the GF Signet product ecosystem and meets industrial standards for performance and durability.
Requires Quote
Available for Purchase

Subject to factory lead times

The GF Signet 3-2764-2 is a Sensor/Instrument for industrial process measurement and control. This product is designed for use in water treatment, chemical processing, and related industrial applications requiring reliable process measurement measurement. It is compatible with the GF Signet product ecosystem and meets industrial standards for performance and durability.
Requires Quote
Available for Purchase

Subject to factory lead times

The GF Signet 3-2765-1 is a Sensor/Instrument for industrial process measurement and control. This product is designed for use in water treatment, chemical processing, and related industrial applications requiring reliable process measurement measurement. It is compatible with the GF Signet product ecosystem and meets industrial standards for performance and durability.
Requires Quote
Available for Purchase

Subject to factory lead times

The GF Signet 3-2766-1 is a Sensor/Instrument for industrial process measurement and control. This product is designed for use in water treatment, chemical processing, and related industrial applications requiring reliable process measurement measurement. It is compatible with the GF Signet product ecosystem and meets industrial standards for performance and durability.
Requires Quote
Available for Purchase

Subject to factory lead times

The GF Signet 3-2766-2 is a Sensor/Instrument for industrial process measurement and control. This product is designed for use in water treatment, chemical processing, and related industrial applications requiring reliable process measurement measurement. It is compatible with the GF Signet product ecosystem and meets industrial standards for performance and durability.
Requires Quote
Available for Purchase

Subject to factory lead times

The GF Signet 3-2767-1 is a Sensor/Instrument for industrial process measurement and control. This product is designed for use in water treatment, chemical processing, and related industrial applications requiring reliable process measurement measurement. It is compatible with the GF Signet product ecosystem and meets industrial standards for performance and durability.
Requires Quote
Available for Purchase

Subject to factory lead times

The GF Signet 2774 DryLoc pH/ORP Electrode features the patented DryLoc connector for reliable, moisture-resistant connections in high-humidity environments. Designed for use with Signet 2750 or 2751 sensor electronics, it measures 0 to 14 pH or ORP with a gel-filled double-junction reference for extended service life and minimal maintenance in industrial applications.

$702.97$792.00

You save 11%
Available for Purchase

Subject to factory lead times

The GF Signet 2751 DryLoc pH/ORP Smart Sensor Electronics module converts the millivolt signal from a pH or ORP electrode into a digital S3L signal for Signet 9900 or 9950 transmitters. It features automatic temperature compensation, on-board calibration storage, and diagnostic capabilities. The DryLoc connector provides reliable, weatherproof connection to GF Signet pH/ORP electrodes. This specific variant (3-2751-3-025) is configured with 25 mm insertion/cable.

$654.15$737.00

You save 11%
Available for Purchase

Subject to factory lead times

The GF Signet 2751 DryLoc pH/ORP Smart Sensor Electronics module converts the millivolt signal from a pH or ORP electrode into a digital S3L signal for Signet 9900 or 9950 transmitters. It features automatic temperature compensation, on-board calibration storage, and diagnostic capabilities. The DryLoc connector provides reliable, weatherproof connection to GF Signet pH/ORP electrodes. This specific variant (3-2751-3-050) is configured with 50 mm insertion/cable.

$736.70$830.00

You save 11%
Available for Purchase

Subject to factory lead times

The GF Signet 2751 DryLoc pH/ORP Smart Sensor Electronics module converts the millivolt signal from a pH or ORP electrode into a digital S3L signal for Signet 9900 or 9950 transmitters. It features automatic temperature compensation, on-board calibration storage, and diagnostic capabilities. The DryLoc connector provides reliable, weatherproof connection to GF Signet pH/ORP electrodes. This specific variant (3-2751-3-100) is configured with 100 mm insertion.

$901.79$1,016.00

You save 11%
Available for Purchase

Subject to factory lead times

The GF Signet 2751 DryLoc pH/ORP Smart Sensor Electronics module converts the millivolt signal from a pH or ORP electrode into a digital S3L signal for Signet 9900 or 9950 transmitters. It features automatic temperature compensation, on-board calibration storage, and diagnostic capabilities. The DryLoc connector provides reliable, weatherproof connection to GF Signet pH/ORP electrodes.

$626.64$706.00

You save 11%
Available for Purchase

Subject to factory lead times

The GF Signet 2751 DryLoc pH/ORP Smart Sensor Electronics module converts the millivolt signal from a pH or ORP electrode into a digital S3L signal for Signet 9900 or 9950 transmitters. It features automatic temperature compensation, on-board calibration storage, and diagnostic capabilities. The DryLoc connector provides reliable, weatherproof connection to GF Signet pH/ORP electrodes.

$811.19$952.00

You save 15%
Available for Purchase

Subject to factory lead times

The GF Signet 3-2754-1 is a Sensor/Instrument for industrial process measurement and control. This product is designed for use in water treatment, chemical processing, and related industrial applications requiring reliable process measurement measurement. It is compatible with the GF Signet product ecosystem and meets industrial standards for performance and durability.

$541.43$610.00

You save 11%
Available for Purchase

Subject to factory lead times

The GF Signet 3-2756-WTP is a Sensor/Instrument for industrial process measurement and control. This product is designed for use in water treatment, chemical processing, and related industrial applications requiring reliable process measurement measurement. It is compatible with the GF Signet product ecosystem and meets industrial standards for performance and durability. Configured with wet-tap assembly.

$547.64$617.00

You save 11%
Available for Purchase

Subject to factory lead times

The GF Signet 3-2756-WTP-1 is a Sensor/Instrument for industrial process measurement and control. This product is designed for use in water treatment, chemical processing, and related industrial applications requiring reliable process measurement measurement. It is compatible with the GF Signet product ecosystem and meets industrial standards for performance and durability. Configured with wet-tap assembly.

$589.36$664.00

You save 11%
Available for Purchase

Subject to factory lead times

The GF Signet 3-2757-WTP is a Sensor/Instrument for industrial process measurement and control. This product is designed for use in water treatment, chemical processing, and related industrial applications requiring reliable process measurement measurement. It is compatible with the GF Signet product ecosystem and meets industrial standards for performance and durability. Configured with wet-tap assembly.

$613.32$691.00

You save 11%
Available for Purchase

Subject to factory lead times

The GF Signet 3-2757-WTP-HDPE-PR is a Sensor/Instrument for industrial process measurement and control. This product is designed for use in water treatment, chemical processing, and related industrial applications requiring reliable process measurement measurement. It is compatible with the GF Signet product ecosystem and meets industrial standards for performance and durability. Configured with wet-tap assembly, HDPE material.

$827.23$932.00

You save 11%
Available for Purchase

Subject to factory lead times

The GF Signet 2759 pH/ORP System Tester is a diagnostic tool for testing and troubleshooting complete Signet pH and ORP measurement systems. It can simulate electrode signals to verify transmitter and electronics performance, helping technicians isolate faults quickly without removing electrodes from the process.

$651.49$734.00

You save 11%
Available for Purchase

Subject to factory lead times

The GF Signet 2759 pH/ORP System Tester is a diagnostic tool for testing and troubleshooting complete Signet pH and ORP measurement systems. It can simulate electrode signals to verify transmitter and electronics performance, helping technicians isolate faults quickly without removing electrodes from the process.

$140.24$158.00

You save 11%
Available for Purchase

Subject to factory lead times

The GF Signet 2760 Pressure Sensor is an insertion-style transducer for liquid pressure monitoring in industrial pipe systems. Using a piezoresistive sensing element, it measures gauge pressure with S3L digital output to Signet 9900/9950 transmitters. Available in pressure ranges from 0-15 to 0-150 psi (0-1 to 0-10 bar).

$545.87$615.00

You save 11%
Available for Purchase

Subject to factory lead times

The GF Signet 2760 Pressure Sensor is an insertion-style transducer for liquid pressure monitoring in industrial pipe systems. Using a piezoresistive sensing element, it measures gauge pressure with S3L digital output to Signet 9900/9950 transmitters. Available in pressure ranges from 0-15 to 0-150 psi (0-1 to 0-10 bar).

$587.58$662.00

You save 11%
Available for Purchase

Subject to factory lead times

The GF Signet 2760 Pressure Sensor is an insertion-style transducer for liquid pressure monitoring in industrial pipe systems. Using a piezoresistive sensing element, it measures gauge pressure with S3L digital output to Signet 9900/9950 transmitters. Available in pressure ranges from 0-15 to 0-150 psi (0-1 to 0-10 bar). This specific variant (3-2760-11-025) is configured with 25 mm insertion/cable.

$655.93$739.00

You save 11%
Available for Purchase

Subject to factory lead times

The GF Signet 2760 Pressure Sensor is an insertion-style transducer for liquid pressure monitoring in industrial pipe systems. Using a piezoresistive sensing element, it measures gauge pressure with S3L digital output to Signet 9900/9950 transmitters. Available in pressure ranges from 0-15 to 0-150 psi (0-1 to 0-10 bar).

$545.87$615.00

You save 11%
Available for Purchase

Subject to factory lead times

The GF Signet 2760 Pressure Sensor is an insertion-style transducer for liquid pressure monitoring in industrial pipe systems. Using a piezoresistive sensing element, it measures gauge pressure with S3L digital output to Signet 9900/9950 transmitters. Available in pressure ranges from 0-15 to 0-150 psi (0-1 to 0-10 bar).

$587.58$662.00

You save 11%
Available for Purchase

Subject to factory lead times

The GF Signet 3-2764-1 is a Sensor/Instrument for industrial process measurement and control. This product is designed for use in water treatment, chemical processing, and related industrial applications requiring reliable process measurement measurement. It is compatible with the GF Signet product ecosystem and meets industrial standards for performance and durability.
Requires Quote
Available for Purchase

Subject to factory lead times

The GF Signet 3-2764-2 is a Sensor/Instrument for industrial process measurement and control. This product is designed for use in water treatment, chemical processing, and related industrial applications requiring reliable process measurement measurement. It is compatible with the GF Signet product ecosystem and meets industrial standards for performance and durability.
Requires Quote
Available for Purchase

Subject to factory lead times

The GF Signet 3-2765-1 is a Sensor/Instrument for industrial process measurement and control. This product is designed for use in water treatment, chemical processing, and related industrial applications requiring reliable process measurement measurement. It is compatible with the GF Signet product ecosystem and meets industrial standards for performance and durability.
Requires Quote
Available for Purchase

Subject to factory lead times

The GF Signet 3-2766-1 is a Sensor/Instrument for industrial process measurement and control. This product is designed for use in water treatment, chemical processing, and related industrial applications requiring reliable process measurement measurement. It is compatible with the GF Signet product ecosystem and meets industrial standards for performance and durability.
Requires Quote
Available for Purchase

Subject to factory lead times

The GF Signet 3-2766-2 is a Sensor/Instrument for industrial process measurement and control. This product is designed for use in water treatment, chemical processing, and related industrial applications requiring reliable process measurement measurement. It is compatible with the GF Signet product ecosystem and meets industrial standards for performance and durability.
Requires Quote
Available for Purchase

Subject to factory lead times

The GF Signet 3-2767-1 is a Sensor/Instrument for industrial process measurement and control. This product is designed for use in water treatment, chemical processing, and related industrial applications requiring reliable process measurement measurement. It is compatible with the GF Signet product ecosystem and meets industrial standards for performance and durability.
Requires Quote
Available for Purchase

Subject to factory lead times

The GF Signet 2774 DryLoc pH/ORP Electrode features the patented DryLoc connector for reliable, moisture-resistant connections in high-humidity environments. Designed for use with Signet 2750 or 2751 sensor electronics, it measures 0 to 14 pH or ORP with a gel-filled double-junction reference for extended service life and minimal maintenance in industrial applications.

$702.97$792.00

You save 11%
Available for Purchase

Subject to factory lead times