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Corrosion-Resistant Glass LT3400 pH Sensor for Wastewater

Premium LT3400 glass pH probe from a reliable Chinese factory, providing stable long-term monitoring for complex industrial wastewater systems.

● Anti-Poisoning Reference: Utilizes a long-path reference system and PCG gel electrolyte for excellent drift resistance.
● High-Pressure Capability: Engineered to withstand operating pressures up to 6 Bar, ideal for in-line pipe installations.
● Enhanced Chemical Resistance: Optional 3/4″ NPT PTFE housing is available to handle highly aggressive chemical media.
● Stable Signal Response: Features a ring-shaped PTFE liquid junction to ensure a stable potential and fast response time under 10 seconds.

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LT3400 Glass pH Probe Description

LOOTEST, a leading instrumentation supplier, offers the Corrosion-Resistant Glass LT3400 pH Sensor for Wastewater. This sensor features a sophisticated long-path reference system that ensures superior stability and an exceptionally long service life in harsh environments. As a trusted manufacturer, we provide versatile mounting options, including the standard PG13.5 thread or an optional 3/4″ NPT PTFE housing for extreme chemical resistance. With a pressure rating up to 6 Bar, this probe is ideal for wholesale distributors serving municipal sewage plants and industrial water treatment facilities worldwide.

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LT3400 pH Sensor Technical Data Sheet

Measurement range:	0–14 pH
Temperature range:	0–80°C
Pressure resistance:	0–3 bar, 6Bar MAX
Temp. compensation:	NTC 2.252K / 5K / 10K / 22K / 30K / PT100 / PT1000 (optional)
Slope:	95%
Membrane resistance:	<250 MΩ
Zero potential:	<±10 mV
Response time:	<10 s
Salt bridge type:	Annular PTFE
Reference electrolyte:	PCG polymer gel (standard)
Reference type:	Long-path reference
Mounting thread:	Upper & lower 3/4″ NPT, PG13.5
Housing material:	Glass, PTFE housing optional
Length:	120/150/225/325/425 mm etc customizable
pH-sensitive membrane:	General-purpose membrane (HC)
Cable connection:	S8/S/M/S7/VP8/K8S/K2 etc customizable

LT3400 pH Probe Applications

The LT3400 is specifically designed for high-demand liquid analysis. It is the preferred choice for industrial wastewater discharge, chemical process neutralizing, agricultural hydroponics, and large-scale municipal water treatment projects.

Industry Glass pH Sensor Display

Extra Information

Feature	Customization Options / Benefits
Shell Material	Upgradeable to Polyphenylene Sulfide (PPS) for extreme chemicals.
Reference System	Can be upgraded to a double salt bridge for high-pollution environments.
Sensitive Membrane	Low-impedance sensitive bulb (HL) available for cold water applications.
Cable Length	Integrated straight-lead connection, extendable up to 60 meters.
Application Suitability	Optimized for industrial stability and long-term cost control.

Features Overview
● PTFE (polytetrafluoroethylene) housing offers excellent chemical corrosion resistance
● IP68 waterproof rating
● Excellent long-term stability
● Full-range 0–14 pH measurement, resistant to long-term acid and alkali exposure
● Solidified sensitive membrane, resistant to mechanical shock
● Dual-thread design allows direct installation into the process

Expansion Capabilities
● Built-in double-junction glass electrode can be customized for various applications
● Single-point porous ceramic junction can be upgraded to double or triple junctions, or customized to an annular PTFE junction
● Cable length can be extended up to 60 m