PPS Online pH Probe for Strong Acid and Alkali

Engineered with an acid and alkali resistant glass membrane and a rugged PPS housing, the ASP400 sensor delivers high-precision, low-maintenance pH monitoring in complex industrial and high-temperature environments up to 100°C.

Model： ASP400
Measuring Range： 0~14 pH
MOQ： 1
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Overview
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Overview

Information

Measuring Range: 0~14pH
Housing: PPS
Reference System: Ag/AgCl, double junction

Work Process

Working Temp: 0~100℃
Working Pressure: 0~6Bar
Diaphragm: Porous PTFE

Features

Upgraded Corrosion-resistant Housing for Harsher Conditions

The ASP400 analog combined online pH probe adopts PPS housing. It delivers superior acid, alkali and high temperature resistance for wider working conditions. Built with low-impedance hemispherical glass membrane, high mechanical strength and anti-breakage.
Reliable & Responsive Measurement, Easy Maintenance

Double junction reference design with large-area annular porous PTFE diaphragm. Fast response, anti-logging and easy to clean. Analog signal output, compatible with mainstream industrial pH transmitters and controllers.
Flexible Installation & Optional Temperature Compensation

1-inch NPT thread on both ends for submersion, flow cell and in-line installation. Integrated cable with customizable length. Optional built-in PT1000 or NTC10K temperature sensor for automatic temperature compensation.

Application

The ASP400 analog combined pH sensor is suitable for industrial process control, industrial sewage, strong acid and alkali wastewater, chemical process water, pickling & alkaline bath solution, circulating process water, printing and dyeing wastewater and other complex corrosive water monitoring. It also works for surface water, aquaculture and irrigation water testing.

Applicable Scenarios

Water & Wastewater
Aquaculture
Energy & Power Generation
Food & Beverage
Agriculture & Hydroponics
Plating

Standard

Sensor Model	ASP400
Digital or Analog	Analog
Measuring Range	0～14pH
Indicator Electrode	Acid and alkali-resistant glass membrane
Reference System	Ag/AgCl reference electrode, double salt bridge
Reference Electrolyte	KCl Gel
Diaphragm	Hemispherical glass membrane
Sensor Material	Glass+Porous PTFE membrane
Operating Temperature	0～100°C
Operating Pressure	0～6 bar
Temperature Sensor	No temperature sensor or PT1000 (Customized)
Recommended Solution Flow	0.5 m/s ≥ flow rate ≥ 0.001 m/s
E0	±0.25pH (25℃)
Slope	>95% (25℃)
Sensor Dimension	Diameter: 35mm, Shaft length: 200mm
Process Connection	1" NPT
Cable Connector	Integrated type
Cable Length	5m as standard, Customizable up to 60m