Sentron

Sentron is a Netherlands-based sensor developer and manufacturer that has built a decades-long reputation for high-fidelity ISFET (ion-sensitive field-effect transistor) pH sensors, electrical conductivity (EC) sensors and full-bridge pressure sensors. Its operations are centred on an innovation headquarters and production facility in Leek, in the northern Netherlands, where engineering, prototyping and precision manufacturing are combined under one roof. The site houses an ISO-certified microfoundry that fabricates ISFET sensor chips end-to-end — from raw silicon wafer to calibrated sensor — giving the company control over quality, performance and lead time. Sentron's technology is solid-state and multiparameter in nature, which makes it well suited to demanding measurement environments. Its ISFET pH sensors are used in pharmaceutical, food and beverage, and water treatment applications; its EC sensors support agriculture, aquaculture and process water quality; its ORP sensors serve pools, wastewater treatment and environmental monitoring; and its integrated temperature sensors provide compact temperature and pressure measurement. Because the sensors are designed for OEM integration, Sentron's customers are typically device makers and instrument companies rather than end consumers. In 2023 Sentron was acquired by Millar, Inc., a Texas-based pioneer in MEMS sensor technology best known for catheter-tip pressure transducers. The acquisition added multiparameter solid-state sensor expertise to Millar's portfolio and extended Millar's global footprint into the Netherlands. Sentron now operates as "Sentron, a Millar Company," and its Leek facility powers global OEM solutions through in-house microfabrication, engineering and testing. Together, Millar and Sentron serve medical devices, water quality, agriculture, food and beverage, and research and laboratory markets. Sentron is a business-to-business technology brand rather than a consumer-facing one. Its value proposition rests on precision, in-house semiconductor-style fabrication and application-specific customisation, and it is positioned within Millar's broader sensor platform as the solid-state, multiparameter specialist alongside Millar's catheter and MEMS pressure heritage.

Sentron is a Netherlands-based sensor company that, according to Millar's own account, "has for decades built a strong reputation across industries for their high-fidelity ISFET, pH, EC and full-bridge pressure sensors." Its core competence is solid-state sensing built on ISFET (ion-sensitive field-effect transistor) technology, which allows pH to be measured without the fragile glass bulb of conventional electrodes — an advantage for industrial, environmental and OEM applications. The company's innovation headquarters and production facility is located in Leek, in the northern Netherlands, at Kamerlingh-Onnesstraat 5. This site combines engineering, prototyping and precision manufacturing under one roof and includes an ISO-certified microfoundry. The microfoundry enables end-to-end fabrication of ISFET sensor chips, from raw silicon to calibrated sensor, giving Sentron control over quality, performance and lead time. Dedicated clean-room space and a multidisciplinary team support rapid prototyping, scalable manufacturing and application-specific customisation. Sentron's sensors are designed for integration into other companies' instruments and devices. Its ISFET pH sensors are used in pharmaceutical, food and beverage, and water treatment applications; its EC sensors support agriculture, aquaculture and process water quality; its ORP sensors serve pools, wastewater treatment and environmental monitoring; and its integrated temperature sensors provide compact temperature and pressure measurement. Multiparameter solid-state sensors are used in water quality, agriculture, food and beverage, and research and laboratory settings. A turning point came in 2023, when Sentron was acquired by Millar, Inc., a Texas-based company founded by Huntly Millar in 1969 and known for pioneering catheter-tip pressure transducers and MEMS sensor technology. Millar describes the acquisition as adding "multiparameter solid-state sensor expertise to the Millar legacy" and as strengthening its ability to deliver end-to-end sensor solutions worldwide. Following the acquisition, Sentron operates as "Sentron, a Millar Company," and its Netherlands facility powers global OEM solutions through in-house microfabrication, engineering and testing. Millar's leadership team includes Tim Daugherty as President/CEO and Anne Stoker as Chief Operating Officer.

• Millar, Inc. acquires Sentron, adding multiparameter solid-state sensor expertise and a Netherlands facility to the Millar group.

  [4]Medical and Industrial Sensor Integration | Millarmillar.com
• Sentron operates an ISO-certified microfoundry in Leek, Netherlands, fabricating ISFET sensor chips from wafer to calibrated sensor.

  [3]Sentron, a Millar Companymillar.com

B2B precision sensor specialist for OEM integration, differentiated by an in-house ISO-certified microfoundry and solid-state ISFET technology; positioned within Millar's global sensor platform.

• ISFET pH sensors

  Solid-state pH sensors for pharmaceutical, food and beverage, and water treatment applications; fabricated in-house from wafer to calibrated sensor.

• EC sensors

  Electrical conductivity sensors providing precise conductivity measurements for agriculture, aquaculture and process water quality.

• ORP sensors

  Oxidation-reduction potential sensors for water quality in pools, wastewater treatment and environmental monitoring.

• Integrated temperature sensors

  Compact sensors offering precise temperature and pressure measurements while saving space and reducing costs.

• Full-bridge pressure sensors

  Pressure sensors cited among Sentron's long-standing high-fidelity product lines.

1. 1Industrial Applications | Millarmillar.com
2. 2Founder’s Story | Millarmillar.com
3. 3Sentron, a Millar Companymillar.com
4. 4Medical and Industrial Sensor Integration | Millarmillar.com
5. 5Sentronwikidata.org