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 8510 Paddlewheel Flow Sensor is a tee-body inline sensor for liquid flow measurement in ½ to 4 in. (DN15 to DN100) pipe sizes. Constructed of polypropylene or PVDF, it provides open-collector pulse output and is compatible with Signet transmitters. Its inline design eliminates installation fittings for small pipe applications. This specific variant (3-8510-P1) is configured with polypropylene body, 4-20 mA output.
$513.03$578.00
Available for Purchase
Subject to factory lead times
The GF Signet 8510 Paddlewheel Flow Sensor is a tee-body inline sensor for liquid flow measurement in ½ to 4 in. (DN15 to DN100) pipe sizes. Constructed of polypropylene or PVDF, it provides open-collector pulse output and is compatible with Signet transmitters. Its inline design eliminates installation fittings for small pipe applications. This specific variant (3-8510-T0) is configured with threaded connection, open-collector.
$915.99$1,032.00
Available for Purchase
Subject to factory lead times
The GF Signet 8510 Paddlewheel Flow Sensor is a tee-body inline sensor for liquid flow measurement in ½ to 4 in. (DN15 to DN100) pipe sizes. Constructed of polypropylene or PVDF, it provides open-collector pulse output and is compatible with Signet transmitters. Its inline design eliminates installation fittings for small pipe applications. This specific variant (3-8510-T0-N) is configured with threaded connection, open-collector.
$1,622.50$1,828.00
Available for Purchase
Subject to factory lead times
The GF Signet 8510 Paddlewheel Flow Sensor is a tee-body inline sensor for liquid flow measurement in ½ to 4 in. (DN15 to DN100) pipe sizes. Constructed of polypropylene or PVDF, it provides open-collector pulse output and is compatible with Signet transmitters. Its inline design eliminates installation fittings for small pipe applications. This specific variant (3-8510-V0) is configured with PVDF body, open-collector output.
$903.56$1,018.00
Available for Purchase
Subject to factory lead times
The GF Signet 8512 Paddlewheel Flow Sensor is an insertion-type sensor similar to the 8510 but designed for pipe sizes DN15 to DN900 (½ to 36 in.). It is compact and economical, with PP or PVDF construction and open-collector pulse output. Pairs with Signet 9900/9950 transmitters for complete flow measurement solutions. This specific variant (3-8512-P0) is configured with polypropylene body, open-collector output.
$458.00$516.00
Available for Purchase
Subject to factory lead times
The GF Signet 8512 Paddlewheel Flow Sensor is an insertion-type sensor similar to the 8510 but designed for pipe sizes DN15 to DN900 (½ to 36 in.). It is compact and economical, with PP or PVDF construction and open-collector pulse output. Pairs with Signet 9900/9950 transmitters for complete flow measurement solutions. This specific variant (3-8512-P1) is configured with polypropylene body, 4-20 mA output.
$513.03$578.00
Available for Purchase
Subject to factory lead times
The GF Signet 8512 Paddlewheel Flow Sensor is an insertion-type sensor similar to the 8510 but designed for pipe sizes DN15 to DN900 (½ to 36 in.). It is compact and economical, with PP or PVDF construction and open-collector pulse output. Pairs with Signet 9900/9950 transmitters for complete flow measurement solutions. This specific variant (3-8512-T0) is configured with threaded connection, open-collector.
$954.15$1,075.00
Available for Purchase
Subject to factory lead times
The GF Signet 8512 Paddlewheel Flow Sensor is an insertion-type sensor similar to the 8510 but designed for pipe sizes DN15 to DN900 (½ to 36 in.). It is compact and economical, with PP or PVDF construction and open-collector pulse output. Pairs with Signet 9900/9950 transmitters for complete flow measurement solutions. This specific variant (3-8512-V0) is configured with PVDF body, open-collector output.
$869.83$980.00
Available for Purchase
Subject to factory lead times
The GF Signet 3-8551.521 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.
$51.48$58.00
Available for Purchase
Subject to factory lead times
The GF Signet 3-8630-3P 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.
$1,271.97
Available for Purchase
Subject to factory lead times
The GF Signet 3-8900.606 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.
$24.86$28.00
Available for Purchase
Subject to factory lead times
The GF Signet 3-9000.392 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.
$87.88$99.00
Available for Purchase
Subject to factory lead times
The GF Signet 3-9000.392-1 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.
$36.40$41.00
Available for Purchase
Subject to factory lead times
The GF Signet 3-9000.392-2 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.
$36.40$41.00
Available for Purchase
Subject to factory lead times
The GF Signet 9900 Transmitter is a single-channel, multi-parameter instrument that accepts input from virtually any Signet sensor, including flow, pH/ORP, conductivity, dissolved oxygen, chlorine, temperature, and pressure. It features a large two-line LCD display with backlight, dual 4-20 mA outputs, two relay outputs, and Modbus RTU communication. Its NEMA 4X/IP65 rated enclosure is suitable for harsh industrial environments, and it supports panel, wall, and pipe mounting configurations.
$821.90$926.00
Available for Purchase
Subject to factory lead times
The GF Signet 9900 Transmitter is a single-channel, multi-parameter instrument that accepts input from virtually any Signet sensor, including flow, pH/ORP, conductivity, dissolved oxygen, chlorine, temperature, and pressure. It features a large two-line LCD display with backlight, dual 4-20 mA outputs, two relay outputs, and Modbus RTU communication. Its NEMA 4X/IP65 rated enclosure is suitable for harsh industrial environments, and it supports panel, wall, and pipe mounting configurations.
$1,626.94$1,833.00
Available for Purchase
Subject to factory lead times
The GF Signet 9900 Transmitter is a single-channel, multi-parameter instrument that accepts input from virtually any Signet sensor, including flow, pH/ORP, conductivity, dissolved oxygen, chlorine, temperature, and pressure. It features a large two-line LCD display with backlight, dual 4-20 mA outputs, two relay outputs, and Modbus RTU communication. Its NEMA 4X/IP65 rated enclosure is suitable for harsh industrial environments, and it supports panel, wall, and pipe mounting configurations. This specific variant (3-9900-1P) is configured with 1-inch pipe size.
$821.90$926.00
Available for Purchase
Subject to factory lead times
MPN:3-9900-1P-393-394-S-1-1-4
The GF Signet 9900 Transmitter is a single-channel, multi-parameter instrument that accepts input from virtually any Signet sensor, including flow, pH/ORP, conductivity, dissolved oxygen, chlorine, temperature, and pressure. It features a large two-line LCD display with backlight, dual 4-20 mA outputs, two relay outputs, and Modbus RTU communication. Its NEMA 4X/IP65 rated enclosure is suitable for harsh industrial environments, and it supports panel, wall, and pipe mounting configurations. This specific variant (3-9900-1P-393-394-S-1-1-4) is configured with 1-inch pipe size.
$2,599.73$2,929.00
Available for Purchase
Subject to factory lead times
MPN:3-9900-1P-393-398-S-1-1-4
The GF Signet 9900 Transmitter is a single-channel, multi-parameter instrument that accepts input from virtually any Signet sensor, including flow, pH/ORP, conductivity, dissolved oxygen, chlorine, temperature, and pressure. It features a large two-line LCD display with backlight, dual 4-20 mA outputs, two relay outputs, and Modbus RTU communication. Its NEMA 4X/IP65 rated enclosure is suitable for harsh industrial environments, and it supports panel, wall, and pipe mounting configurations. This specific variant (3-9900-1P-393-398-S-1-1-4) is configured with 1-inch pipe size.
$2,802.98$3,158.00
Available for Purchase
Subject to factory lead times
MPN:3-9900-1P-393-S-1-1-4
The GF Signet 9900 Transmitter is a single-channel, multi-parameter instrument that accepts input from virtually any Signet sensor, including flow, pH/ORP, conductivity, dissolved oxygen, chlorine, temperature, and pressure. It features a large two-line LCD display with backlight, dual 4-20 mA outputs, two relay outputs, and Modbus RTU communication. Its NEMA 4X/IP65 rated enclosure is suitable for harsh industrial environments, and it supports panel, wall, and pipe mounting configurations. This specific variant (3-9900-1P-393-S-1-1-4) is configured with 1-inch pipe size.
$2,309.49$2,602.00
Available for Purchase
Subject to factory lead times
MPN:3-9900-1P-394-S-1-1-4
The GF Signet 9900 Transmitter is a single-channel, multi-parameter instrument that accepts input from virtually any Signet sensor, including flow, pH/ORP, conductivity, dissolved oxygen, chlorine, temperature, and pressure. It features a large two-line LCD display with backlight, dual 4-20 mA outputs, two relay outputs, and Modbus RTU communication. Its NEMA 4X/IP65 rated enclosure is suitable for harsh industrial environments, and it supports panel, wall, and pipe mounting configurations. This specific variant (3-9900-1P-394-S-1-1-4) is configured with 1-inch pipe size.
$2,575.76$2,902.00
Available for Purchase
Subject to factory lead times
MPN:3-9900-1P-398-S-1-1-4
The GF Signet 9900 Transmitter is a single-channel, multi-parameter instrument that accepts input from virtually any Signet sensor, including flow, pH/ORP, conductivity, dissolved oxygen, chlorine, temperature, and pressure. It features a large two-line LCD display with backlight, dual 4-20 mA outputs, two relay outputs, and Modbus RTU communication. Its NEMA 4X/IP65 rated enclosure is suitable for harsh industrial environments, and it supports panel, wall, and pipe mounting configurations. This specific variant (3-9900-1P-398-S-1-1-4) is configured with 1-inch pipe size.
$2,491.44$2,807.00
Available for Purchase
Subject to factory lead times
MPN:3-9900-1P-S-1-1-4
The GF Signet 9900 Transmitter is a single-channel, multi-parameter instrument that accepts input from virtually any Signet sensor, including flow, pH/ORP, conductivity, dissolved oxygen, chlorine, temperature, and pressure. It features a large two-line LCD display with backlight, dual 4-20 mA outputs, two relay outputs, and Modbus RTU communication. Its NEMA 4X/IP65 rated enclosure is suitable for harsh industrial environments, and it supports panel, wall, and pipe mounting configurations. This specific variant (3-9900-1P-S-1-1-4) is configured with 1-inch pipe size.
$2,026.35$2,283.00
Available for Purchase
Subject to factory lead times
The GF Signet 9900 Transmitter is a single-channel, multi-parameter instrument that accepts input from virtually any Signet sensor, including flow, pH/ORP, conductivity, dissolved oxygen, chlorine, temperature, and pressure. It features a large two-line LCD display with backlight, dual 4-20 mA outputs, two relay outputs, and Modbus RTU communication. Its NEMA 4X/IP65 rated enclosure is suitable for harsh industrial environments, and it supports panel, wall, and pipe mounting configurations.
$1,271.02$1,432.00
Available for Purchase
Subject to factory lead times
The GF Signet 8510 Paddlewheel Flow Sensor is a tee-body inline sensor for liquid flow measurement in ½ to 4 in. (DN15 to DN100) pipe sizes. Constructed of polypropylene or PVDF, it provides open-collector pulse output and is compatible with Signet transmitters. Its inline design eliminates installation fittings for small pipe applications. This specific variant (3-8510-P1) is configured with polypropylene body, 4-20 mA output.
$513.03$578.00
Available for Purchase
Subject to factory lead times
The GF Signet 8510 Paddlewheel Flow Sensor is a tee-body inline sensor for liquid flow measurement in ½ to 4 in. (DN15 to DN100) pipe sizes. Constructed of polypropylene or PVDF, it provides open-collector pulse output and is compatible with Signet transmitters. Its inline design eliminates installation fittings for small pipe applications. This specific variant (3-8510-T0) is configured with threaded connection, open-collector.
$915.99$1,032.00
Available for Purchase
Subject to factory lead times
The GF Signet 8510 Paddlewheel Flow Sensor is a tee-body inline sensor for liquid flow measurement in ½ to 4 in. (DN15 to DN100) pipe sizes. Constructed of polypropylene or PVDF, it provides open-collector pulse output and is compatible with Signet transmitters. Its inline design eliminates installation fittings for small pipe applications. This specific variant (3-8510-T0-N) is configured with threaded connection, open-collector.
$1,622.50$1,828.00
Available for Purchase
Subject to factory lead times
The GF Signet 8510 Paddlewheel Flow Sensor is a tee-body inline sensor for liquid flow measurement in ½ to 4 in. (DN15 to DN100) pipe sizes. Constructed of polypropylene or PVDF, it provides open-collector pulse output and is compatible with Signet transmitters. Its inline design eliminates installation fittings for small pipe applications. This specific variant (3-8510-V0) is configured with PVDF body, open-collector output.
$903.56$1,018.00
Available for Purchase
Subject to factory lead times
The GF Signet 8512 Paddlewheel Flow Sensor is an insertion-type sensor similar to the 8510 but designed for pipe sizes DN15 to DN900 (½ to 36 in.). It is compact and economical, with PP or PVDF construction and open-collector pulse output. Pairs with Signet 9900/9950 transmitters for complete flow measurement solutions. This specific variant (3-8512-P0) is configured with polypropylene body, open-collector output.
$458.00$516.00
Available for Purchase
Subject to factory lead times
The GF Signet 8512 Paddlewheel Flow Sensor is an insertion-type sensor similar to the 8510 but designed for pipe sizes DN15 to DN900 (½ to 36 in.). It is compact and economical, with PP or PVDF construction and open-collector pulse output. Pairs with Signet 9900/9950 transmitters for complete flow measurement solutions. This specific variant (3-8512-P1) is configured with polypropylene body, 4-20 mA output.
$513.03$578.00
Available for Purchase
Subject to factory lead times
The GF Signet 8512 Paddlewheel Flow Sensor is an insertion-type sensor similar to the 8510 but designed for pipe sizes DN15 to DN900 (½ to 36 in.). It is compact and economical, with PP or PVDF construction and open-collector pulse output. Pairs with Signet 9900/9950 transmitters for complete flow measurement solutions. This specific variant (3-8512-T0) is configured with threaded connection, open-collector.
$954.15$1,075.00
Available for Purchase
Subject to factory lead times
The GF Signet 8512 Paddlewheel Flow Sensor is an insertion-type sensor similar to the 8510 but designed for pipe sizes DN15 to DN900 (½ to 36 in.). It is compact and economical, with PP or PVDF construction and open-collector pulse output. Pairs with Signet 9900/9950 transmitters for complete flow measurement solutions. This specific variant (3-8512-V0) is configured with PVDF body, open-collector output.
$869.83$980.00
Available for Purchase
Subject to factory lead times
The GF Signet 3-8551.521 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.
$51.48$58.00
Available for Purchase
Subject to factory lead times
The GF Signet 3-8630-3P 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.
$1,271.97
Available for Purchase
Subject to factory lead times
The GF Signet 3-8900.606 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.
$24.86$28.00
Available for Purchase
Subject to factory lead times
The GF Signet 3-9000.392 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.
$87.88$99.00
Available for Purchase
Subject to factory lead times
The GF Signet 3-9000.392-1 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.
$36.40$41.00
Available for Purchase
Subject to factory lead times
The GF Signet 3-9000.392-2 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.
$36.40$41.00
Available for Purchase
Subject to factory lead times
The GF Signet 9900 Transmitter is a single-channel, multi-parameter instrument that accepts input from virtually any Signet sensor, including flow, pH/ORP, conductivity, dissolved oxygen, chlorine, temperature, and pressure. It features a large two-line LCD display with backlight, dual 4-20 mA outputs, two relay outputs, and Modbus RTU communication. Its NEMA 4X/IP65 rated enclosure is suitable for harsh industrial environments, and it supports panel, wall, and pipe mounting configurations.
$821.90$926.00
Available for Purchase
Subject to factory lead times
The GF Signet 9900 Transmitter is a single-channel, multi-parameter instrument that accepts input from virtually any Signet sensor, including flow, pH/ORP, conductivity, dissolved oxygen, chlorine, temperature, and pressure. It features a large two-line LCD display with backlight, dual 4-20 mA outputs, two relay outputs, and Modbus RTU communication. Its NEMA 4X/IP65 rated enclosure is suitable for harsh industrial environments, and it supports panel, wall, and pipe mounting configurations.
$1,626.94$1,833.00
Available for Purchase
Subject to factory lead times
The GF Signet 9900 Transmitter is a single-channel, multi-parameter instrument that accepts input from virtually any Signet sensor, including flow, pH/ORP, conductivity, dissolved oxygen, chlorine, temperature, and pressure. It features a large two-line LCD display with backlight, dual 4-20 mA outputs, two relay outputs, and Modbus RTU communication. Its NEMA 4X/IP65 rated enclosure is suitable for harsh industrial environments, and it supports panel, wall, and pipe mounting configurations. This specific variant (3-9900-1P) is configured with 1-inch pipe size.
$821.90$926.00
Available for Purchase
Subject to factory lead times
MPN:3-9900-1P-393-394-S-1-1-4
The GF Signet 9900 Transmitter is a single-channel, multi-parameter instrument that accepts input from virtually any Signet sensor, including flow, pH/ORP, conductivity, dissolved oxygen, chlorine, temperature, and pressure. It features a large two-line LCD display with backlight, dual 4-20 mA outputs, two relay outputs, and Modbus RTU communication. Its NEMA 4X/IP65 rated enclosure is suitable for harsh industrial environments, and it supports panel, wall, and pipe mounting configurations. This specific variant (3-9900-1P-393-394-S-1-1-4) is configured with 1-inch pipe size.
$2,599.73$2,929.00
Available for Purchase
Subject to factory lead times
MPN:3-9900-1P-393-398-S-1-1-4
The GF Signet 9900 Transmitter is a single-channel, multi-parameter instrument that accepts input from virtually any Signet sensor, including flow, pH/ORP, conductivity, dissolved oxygen, chlorine, temperature, and pressure. It features a large two-line LCD display with backlight, dual 4-20 mA outputs, two relay outputs, and Modbus RTU communication. Its NEMA 4X/IP65 rated enclosure is suitable for harsh industrial environments, and it supports panel, wall, and pipe mounting configurations. This specific variant (3-9900-1P-393-398-S-1-1-4) is configured with 1-inch pipe size.
$2,802.98$3,158.00
Available for Purchase
Subject to factory lead times
MPN:3-9900-1P-393-S-1-1-4
The GF Signet 9900 Transmitter is a single-channel, multi-parameter instrument that accepts input from virtually any Signet sensor, including flow, pH/ORP, conductivity, dissolved oxygen, chlorine, temperature, and pressure. It features a large two-line LCD display with backlight, dual 4-20 mA outputs, two relay outputs, and Modbus RTU communication. Its NEMA 4X/IP65 rated enclosure is suitable for harsh industrial environments, and it supports panel, wall, and pipe mounting configurations. This specific variant (3-9900-1P-393-S-1-1-4) is configured with 1-inch pipe size.
$2,309.49$2,602.00
Available for Purchase
Subject to factory lead times
MPN:3-9900-1P-394-S-1-1-4
The GF Signet 9900 Transmitter is a single-channel, multi-parameter instrument that accepts input from virtually any Signet sensor, including flow, pH/ORP, conductivity, dissolved oxygen, chlorine, temperature, and pressure. It features a large two-line LCD display with backlight, dual 4-20 mA outputs, two relay outputs, and Modbus RTU communication. Its NEMA 4X/IP65 rated enclosure is suitable for harsh industrial environments, and it supports panel, wall, and pipe mounting configurations. This specific variant (3-9900-1P-394-S-1-1-4) is configured with 1-inch pipe size.
$2,575.76$2,902.00
Available for Purchase
Subject to factory lead times
MPN:3-9900-1P-398-S-1-1-4
The GF Signet 9900 Transmitter is a single-channel, multi-parameter instrument that accepts input from virtually any Signet sensor, including flow, pH/ORP, conductivity, dissolved oxygen, chlorine, temperature, and pressure. It features a large two-line LCD display with backlight, dual 4-20 mA outputs, two relay outputs, and Modbus RTU communication. Its NEMA 4X/IP65 rated enclosure is suitable for harsh industrial environments, and it supports panel, wall, and pipe mounting configurations. This specific variant (3-9900-1P-398-S-1-1-4) is configured with 1-inch pipe size.
$2,491.44$2,807.00
Available for Purchase
Subject to factory lead times
MPN:3-9900-1P-S-1-1-4
The GF Signet 9900 Transmitter is a single-channel, multi-parameter instrument that accepts input from virtually any Signet sensor, including flow, pH/ORP, conductivity, dissolved oxygen, chlorine, temperature, and pressure. It features a large two-line LCD display with backlight, dual 4-20 mA outputs, two relay outputs, and Modbus RTU communication. Its NEMA 4X/IP65 rated enclosure is suitable for harsh industrial environments, and it supports panel, wall, and pipe mounting configurations. This specific variant (3-9900-1P-S-1-1-4) is configured with 1-inch pipe size.
$2,026.35$2,283.00
Available for Purchase
Subject to factory lead times
The GF Signet 9900 Transmitter is a single-channel, multi-parameter instrument that accepts input from virtually any Signet sensor, including flow, pH/ORP, conductivity, dissolved oxygen, chlorine, temperature, and pressure. It features a large two-line LCD display with backlight, dual 4-20 mA outputs, two relay outputs, and Modbus RTU communication. Its NEMA 4X/IP65 rated enclosure is suitable for harsh industrial environments, and it supports panel, wall, and pipe mounting configurations.
$1,271.02$1,432.00
Available for Purchase
Subject to factory lead times