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 2285-P-6C-5 is a Level Sensor for industrial process measurement and control. This product is designed for use in water treatment, chemical processing, and related industrial applications requiring reliable level measurement. It is compatible with the GF Signet product ecosystem and meets industrial standards for performance and durability.

$79.00$89.00

You save 11%
Available for Purchase

Subject to factory lead times

The GF Signet 2285-P-weight is a Level Sensor for industrial process measurement and control. This product is designed for use in water treatment, chemical processing, and related industrial applications requiring reliable level measurement. It is compatible with the GF Signet product ecosystem and meets industrial standards for performance and durability.

$5.33$6.00

You save 11%
Available for Purchase

Subject to factory lead times

The GF Signet 2290-F-DN2-18 is a Level Sensor for industrial process measurement and control. This product is designed for use in water treatment, chemical processing, and related industrial applications requiring reliable level measurement. It is compatible with the GF Signet product ecosystem and meets industrial standards for performance and durability.

$3,247.66$3,659.00

You save 11%
Available for Purchase

Subject to factory lead times

The GF Signet 2290-F-ENC-N2 is a Level Sensor for industrial process measurement and control. This product is designed for use in water treatment, chemical processing, and related industrial applications requiring reliable level measurement. It is compatible with the GF Signet product ecosystem and meets industrial standards for performance and durability.

$436.69$492.00

You save 11%
Available for Purchase

Subject to factory lead times

The GF Signet 2290-P-1DN2-18 is a Level Sensor for industrial process measurement and control. This product is designed for use in water treatment, chemical processing, and related industrial applications requiring reliable level measurement. It is compatible with the GF Signet product ecosystem and meets industrial standards for performance and durability.

$2,464.81$2,777.00

You save 11%
Available for Purchase

Subject to factory lead times

The GF Signet 2290-S-DN2-18 is a Level Sensor for industrial process measurement and control. This product is designed for use in water treatment, chemical processing, and related industrial applications requiring reliable level measurement. It is compatible with the GF Signet product ecosystem and meets industrial standards for performance and durability.

$2,810.08$3,166.00

You save 11%
Available for Purchase

Subject to factory lead times

The GF Signet 2291-S-1DN1-2-D is a Level Sensor for industrial process measurement and control. This product is designed for use in water treatment, chemical processing, and related industrial applications requiring reliable level measurement. It is compatible with the GF Signet product ecosystem and meets industrial standards for performance and durability.

$2,818.96$3,176.00

You save 11%
Available for Purchase

Subject to factory lead times

The GF Signet 2291-S-1DN1-6-R is a Level Sensor for industrial process measurement and control. This product is designed for use in water treatment, chemical processing, and related industrial applications requiring reliable level measurement. It is compatible with the GF Signet product ecosystem and meets industrial standards for performance and durability.

$2,956.53$3,331.00

You save 11%
Available for Purchase

Subject to factory lead times

The GF Signet 2450 Turbidity/Suspended Solids Sensor uses optical back-scatter technology to measure turbidity or suspended solids concentration from 0 to 9999 NTU or 0 to 50,000 mg/L. Designed for wastewater, industrial process water, and sludge monitoring, it outputs S3L digital signal to Signet transmitters.

$3.56$4.00

You save 11%
Available for Purchase

Subject to factory lead times

The GF Signet 2800-0031 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.

$9.77$11.00

You save 11%
Available for Purchase

Subject to factory lead times

The GF Signet 3-0000.596 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.

$108.29$122.00

You save 11%
Available for Purchase

Subject to factory lead times

The GF Signet 3-0000.596-1 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.

$110.95$125.00

You save 11%
Available for Purchase

Subject to factory lead times

The GF Signet 3-0000.596-2 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.

$171.31$193.00

You save 11%
Available for Purchase

Subject to factory lead times

The GF Signet 0252 Configuration Tool is a handheld device for programming and configuring Signet S3L smart sensors without the need for a transmitter. It allows technicians to set parameters, read live data, and troubleshoot sensors in the field. Powered by an internal battery, it connects directly to S3L sensors via a standard connector. This specific variant (3-0252) is configured with 25 mm insertion/cable.

$368.35$415.00

You save 11%
Available for Purchase

Subject to factory lead times

The GF Signet 3-0290 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.

$2,406.23$2,711.00

You save 11%
Available for Purchase

Subject to factory lead times

The GF Signet 3-0290.260 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.

$129.59$146.00

You save 11%
Available for Purchase

Subject to factory lead times

The GF Signet 0486 Profibus Concentrator enables multiple Signet 9900 transmitters to communicate over a single PROFIBUS DP network. It acts as a gateway between the Signet proprietary bus and PROFIBUS, allowing integration into standard industrial automation systems. Supports connection of up to 16 Signet 9900 transmitters.

$3,396.77$3,827.00

You save 11%
Available for Purchase

Subject to factory lead times

The GF Signet 3-0515.322-1 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.

$112.73$127.00

You save 11%
Available for Purchase

Subject to factory lead times

The GF Signet 3-0515.322-2 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.

$116.28$131.00

You save 11%
Available for Purchase

Subject to factory lead times

The GF Signet 3-0515.322-3 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.

$134.03$151.00

You save 11%
Available for Purchase

Subject to factory lead times

The GF Signet 3-0700.390 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.

$7.11$8.00

You save 11%
Available for Purchase

Subject to factory lead times

The GF Signet 3-1500.663 is a Special/Accessory Item for industrial process measurement and control. This product is designed for use in water treatment, chemical processing, and related industrial applications requiring reliable various measurement. It is compatible with the GF Signet product ecosystem and meets industrial standards for performance and durability.

$1,925.17$2,169.00

You save 11%
Available for Purchase

Subject to factory lead times

The GF Signet 2000 Micro Flow Rotor Sensor is designed for precise measurement of low flow rates in small-bore pipes (½ to 2 in. / DN15 to DN50). It uses a positive-displacement rotor design with a magnetically coupled pickup, offering exceptional accuracy in miniaturized flow paths for laboratory, medical, and precision process applications.

$619.54$698.00

You save 11%
Available for Purchase

Subject to factory lead times

The GF Signet 2000 Micro Flow Rotor Sensor is designed for precise measurement of low flow rates in small-bore pipes (½ to 2 in. / DN15 to DN50). It uses a positive-displacement rotor design with a magnetically coupled pickup, offering exceptional accuracy in miniaturized flow paths for laboratory, medical, and precision process applications.

$619.54$698.00

You save 11%
Available for Purchase

Subject to factory lead times

The GF Signet 2285-P-6C-5 is a Level Sensor for industrial process measurement and control. This product is designed for use in water treatment, chemical processing, and related industrial applications requiring reliable level measurement. It is compatible with the GF Signet product ecosystem and meets industrial standards for performance and durability.

$79.00$89.00

You save 11%
Available for Purchase

Subject to factory lead times

The GF Signet 2285-P-weight is a Level Sensor for industrial process measurement and control. This product is designed for use in water treatment, chemical processing, and related industrial applications requiring reliable level measurement. It is compatible with the GF Signet product ecosystem and meets industrial standards for performance and durability.

$5.33$6.00

You save 11%
Available for Purchase

Subject to factory lead times

The GF Signet 2290-F-DN2-18 is a Level Sensor for industrial process measurement and control. This product is designed for use in water treatment, chemical processing, and related industrial applications requiring reliable level measurement. It is compatible with the GF Signet product ecosystem and meets industrial standards for performance and durability.

$3,247.66$3,659.00

You save 11%
Available for Purchase

Subject to factory lead times

The GF Signet 2290-F-ENC-N2 is a Level Sensor for industrial process measurement and control. This product is designed for use in water treatment, chemical processing, and related industrial applications requiring reliable level measurement. It is compatible with the GF Signet product ecosystem and meets industrial standards for performance and durability.

$436.69$492.00

You save 11%
Available for Purchase

Subject to factory lead times

The GF Signet 2290-P-1DN2-18 is a Level Sensor for industrial process measurement and control. This product is designed for use in water treatment, chemical processing, and related industrial applications requiring reliable level measurement. It is compatible with the GF Signet product ecosystem and meets industrial standards for performance and durability.

$2,464.81$2,777.00

You save 11%
Available for Purchase

Subject to factory lead times

The GF Signet 2290-S-DN2-18 is a Level Sensor for industrial process measurement and control. This product is designed for use in water treatment, chemical processing, and related industrial applications requiring reliable level measurement. It is compatible with the GF Signet product ecosystem and meets industrial standards for performance and durability.

$2,810.08$3,166.00

You save 11%
Available for Purchase

Subject to factory lead times

The GF Signet 2291-S-1DN1-2-D is a Level Sensor for industrial process measurement and control. This product is designed for use in water treatment, chemical processing, and related industrial applications requiring reliable level measurement. It is compatible with the GF Signet product ecosystem and meets industrial standards for performance and durability.

$2,818.96$3,176.00

You save 11%
Available for Purchase

Subject to factory lead times

The GF Signet 2291-S-1DN1-6-R is a Level Sensor for industrial process measurement and control. This product is designed for use in water treatment, chemical processing, and related industrial applications requiring reliable level measurement. It is compatible with the GF Signet product ecosystem and meets industrial standards for performance and durability.

$2,956.53$3,331.00

You save 11%
Available for Purchase

Subject to factory lead times

The GF Signet 2450 Turbidity/Suspended Solids Sensor uses optical back-scatter technology to measure turbidity or suspended solids concentration from 0 to 9999 NTU or 0 to 50,000 mg/L. Designed for wastewater, industrial process water, and sludge monitoring, it outputs S3L digital signal to Signet transmitters.

$3.56$4.00

You save 11%
Available for Purchase

Subject to factory lead times

The GF Signet 2800-0031 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.

$9.77$11.00

You save 11%
Available for Purchase

Subject to factory lead times

The GF Signet 3-0000.596 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.

$108.29$122.00

You save 11%
Available for Purchase

Subject to factory lead times

The GF Signet 3-0000.596-1 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.

$110.95$125.00

You save 11%
Available for Purchase

Subject to factory lead times

The GF Signet 3-0000.596-2 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.

$171.31$193.00

You save 11%
Available for Purchase

Subject to factory lead times

The GF Signet 0252 Configuration Tool is a handheld device for programming and configuring Signet S3L smart sensors without the need for a transmitter. It allows technicians to set parameters, read live data, and troubleshoot sensors in the field. Powered by an internal battery, it connects directly to S3L sensors via a standard connector. This specific variant (3-0252) is configured with 25 mm insertion/cable.

$368.35$415.00

You save 11%
Available for Purchase

Subject to factory lead times

The GF Signet 3-0290 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.

$2,406.23$2,711.00

You save 11%
Available for Purchase

Subject to factory lead times

The GF Signet 3-0290.260 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.

$129.59$146.00

You save 11%
Available for Purchase

Subject to factory lead times

The GF Signet 0486 Profibus Concentrator enables multiple Signet 9900 transmitters to communicate over a single PROFIBUS DP network. It acts as a gateway between the Signet proprietary bus and PROFIBUS, allowing integration into standard industrial automation systems. Supports connection of up to 16 Signet 9900 transmitters.

$3,396.77$3,827.00

You save 11%
Available for Purchase

Subject to factory lead times

The GF Signet 3-0515.322-1 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.

$112.73$127.00

You save 11%
Available for Purchase

Subject to factory lead times

The GF Signet 3-0515.322-2 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.

$116.28$131.00

You save 11%
Available for Purchase

Subject to factory lead times

The GF Signet 3-0515.322-3 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.

$134.03$151.00

You save 11%
Available for Purchase

Subject to factory lead times

The GF Signet 3-0700.390 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.

$7.11$8.00

You save 11%
Available for Purchase

Subject to factory lead times

The GF Signet 3-1500.663 is a Special/Accessory Item for industrial process measurement and control. This product is designed for use in water treatment, chemical processing, and related industrial applications requiring reliable various measurement. It is compatible with the GF Signet product ecosystem and meets industrial standards for performance and durability.

$1,925.17$2,169.00

You save 11%
Available for Purchase

Subject to factory lead times

The GF Signet 2000 Micro Flow Rotor Sensor is designed for precise measurement of low flow rates in small-bore pipes (½ to 2 in. / DN15 to DN50). It uses a positive-displacement rotor design with a magnetically coupled pickup, offering exceptional accuracy in miniaturized flow paths for laboratory, medical, and precision process applications.

$619.54$698.00

You save 11%
Available for Purchase

Subject to factory lead times

The GF Signet 2000 Micro Flow Rotor Sensor is designed for precise measurement of low flow rates in small-bore pipes (½ to 2 in. / DN15 to DN50). It uses a positive-displacement rotor design with a magnetically coupled pickup, offering exceptional accuracy in miniaturized flow paths for laboratory, medical, and precision process applications.

$619.54$698.00

You save 11%
Available for Purchase

Subject to factory lead times