Is BOQU a manufacturer or a trading company?

BOQU is a manufacturer. Founded in 2007, Shanghai Boqu Instrument Co., Ltd. designs, produces and tests its sensors and analyzers in two Shanghai facilities (Kangqiao and Lingang) with 4,632 m² of floorspace, 200+ employees and an annual output of more than 100,000 instruments.

Which certifications do BOQU water quality instruments hold?

Production is managed under ISO 9001 and ISO 14001 systems, and products carry CE, SGS and FDA related certifications. The pH5806 high temperature pH sensor has also been awarded the Shanghai Brand certification.

What signal outputs and communication protocols are available?

Depending on the model, BOQU online analyzers provide 4-20 mA analog outputs, relay alarm contacts and RS485 Modbus RTU communication. IoT digital sensors output RS485 Modbus RTU directly, so they can connect to PLC, DCS, SCADA or cloud gateways without a separate transmitter.

Can BOQU sensors be used in high-temperature fermentation and steam sterilization?

Yes. BOQU operates a dedicated high-temperature water quality sensor laboratory, and its high-temperature pH and DO sensors such as the pH5806 and DOG-208FA are designed for bioreactors, fermenters and hot process lines that undergo repeated steam sterilization.

Do you offer OEM and ODM services?

Yes. BOQU supports OEM and ODM projects including private labeling, custom housings, cable lengths, measuring ranges, firmware and communication protocols, backed by an in-house R&D team.

What information should I provide to get the right analyzer recommendation?

Please share the parameters to measure, expected range, water type, process temperature and pressure, installation method (immersion, flow-through or pipeline), required output signal, power supply and any local compliance standard. BOQU engineers will then recommend a suitable configuration.

Wholesale High-temperature S8 Connector pH Sensor Manufacturers, Factory

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Wholesale High-temperature S8 Connector pH Sensor Manufacturers, Factory

★ Model No: PH5806-S8

★ Measure parameter: pH

★ Temperature range: 0-130℃

★ Features: High measurement accuracy and good repeatability, long life;it can resist the pressure to 0~6Bar and endures the high-temperature sterilization;PG13.5 thread socket, which can be replaced by any overseas electrode.

★ Application: Bio-engineering, Pharmaceutical, Beer, Food and beverages etc.

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Product Description

Product Introduction

The high temperature pH electrode is independently developed by BOQU and has independent intellectual property rights. BOQU Instrument also built first high temperature labotary in China. Hygienic and high temperature pH electrodes for aseptic applications are readily available for applications where in-situ cleaning (CIP) and in-situ sterilization (SIP) are often performed. These pH electrodes are resistant to the high temperatures and fast media transitions of these processes and are still in precision measurements without maintenance interruptions. These hygienic pH electrodes help you meet regulatory compliance requirements for pharmaceutical, biotech and food/beverage production. Options for liquid, gel and polymer reference solution which ensure your requirements for accuracy and working life. Meanwhile, the high pressure design is good for installation in tank and reactors.

High Temperature pH Electrode Dimensions and Structure

Technical Parameters

Parameter measure	pH
Measuring range	0-14PH
Temperature range	0-130℃
Accuracy	±0.1pH
Compressive strength	0.6MPa
Temperature compensation	No
Socket	S8
Cable	AS9
Dimensions	12x120, 150, 225, 275 and 325mm

Key Features

Adopts heat-resisting gel dielectric and solid dielectric double liquid junction structure; withstands 0.6MPa without back pressure connection and suitable for direct 130℃ sterilization.

No need for additional dielectric replenishment, ensuring minimal maintenance demands.

Equipped with standard K8S and PG13.5 thread socket, allowing seamless replacement of overseas brand electrodes.

Multiple insertion lengths available (120, 150, 210, 260, and 320 mm) to suit diverse engineering needs.

Designed for integrated use in conjunction with high-grade 316L stainless steel sheath.

Fields of Application

Bio-engineering Amino acids, blood products, gene research, insulin, and interferon.

Pharmaceutical Industry Antibiotics, vitamins, and citric acid production processes.

Brewing & Beer Mashing, boiling, fermentation, bottling, cold wort, and deoxy water.

Food & Beverages On-line measurement for MSG, soy sauce, dairy products, juice, yeast, sugar, drinking water, and biochemical processes.

Frequently Asked Questions (FAQ)

Q Can this pH electrode withstand CIP and SIP sterilization cycles?

Yes. It is specifically engineered for hygienic and aseptic applications, directly tolerating high-temperature processes such as in-situ cleaning (CIP) and in-situ sterilization (SIP) up to 130℃ without interrupting measurement accuracy.

Q What is the working pressure limit of the electrode?

The electrode features a compressive strength of up to 0.6 MPa, functioning reliably even when not connected to back pressure, making it well-suited for pressurized tanks and reactors.

Q Does the electrode require frequent electrolyte refilling?

No. Thanks to its heat-resisting gel and solid dielectric double liquid junction structure, there is no need for dielectric replenishment, resulting in exceptionally low maintenance overhead.

Q Can it replace imported pH sensors directly?

Yes. The electrode uses standard K8S / S8 connections and PG13.5 thread sockets, allowing direct interchangeability with compatible international electrode systems.

Q What electrode lengths are available for different installations?

The sensor is available in multiple standard insertion lengths: 120mm, 150mm, 210mm (225mm), 260mm (275mm), and 320mm (325mm) with a standard 12mm diameter to match various reactor and pipe sheath dimensions.

Q What industries is this hygienic pH electrode suitable for?

It is widely deployed across bio-engineering (amino acids, blood products, insulin), pharmaceuticals (antibiotics, vitamins), brewing (fermentation, wort), and the food and beverage industry (dairy, juice, sauces).