GE MMS35-311-1-100 is a mainstream specification within the GE Panametrics MMS35 probe family. Breakdown of the model coding: MMS35 stands for the Series 35 dedicated online moisture probe platform; 311 defines probe overall length, standard NPT installation thread and single-layer sintered stainless steel filter structure; the numeral 1 corresponds to integrated built-in NTC temperature sensor for real-time temperature drift correction; 100 refers to factory fixed calibration curve and impedance matching parameters calibrated against standard dew point gas sources at the factory. This probe forms a complete gas moisture monitoring system when paired with MTS6 transmitters, PM880 portable hygrometers and Moisture.IQ signal converters.

The core sensing component adopts nickel-based alumina sensitive chip (Ni2). Water molecules permeate the gold film layer and are adsorbed inside alumina pores, producing linear capacitance changes corresponding to water vapor partial pressure. The matched host converts capacitance signals into readable values including dew point temperature, ppm moisture content and absolute humidity. The effective measuring range covers -110°C to +60°C dew point, meeting measurement demands for ultra-dry compressed air, natural gas, nitrogen, hydrogen and inert shielding gas used in semiconductor, power, chemical and gas industries. The embedded temperature compensation algorithm automatically offsets measurement deviation caused by ambient and pipeline temperature fluctuations, effectively reducing long-term data drift during continuous online operation.

All media contact components are fabricated from seamless welded 316 stainless steel, with a rated working pressure up to 345 bar, suitable for medium and high-pressure gas gathering pipelines and industrial pressure process pipelines. The front single-layer sintered metal filter blocks solid particles, oil mist and condensed liquid droplets in the airflow to prevent contamination and abrasion of the fragile alumina sensing wafer, extending the effective service life of the probe core. The overall probe body adopts fully sealed filling technology with good moisture-proof and weak corrosion resistance, adapting to humid pipe galleries, outdoor compressor stations and chemical device instrument areas.

Internal signal transmission wiring is wrapped with multi-layer copper braided shielding. It suppresses electromagnetic interference generated by field compressors, frequency converters and high-power distribution equipment, ensuring low-loss and stable signal transmission over long cable distances. The probe terminal uses a standard aviation plug interface supporting plug-and-play installation; maintenance staff can complete field disassembly, replacement and calibration without modifying the original system wiring layout.

Every MMS35-311-1-100 probe undergoes strict zero point and span calibration with NIST-traceable standard moisture gas before delivery, with complete calibration reports for factory quality filing and third-party safety inspection audit requirements. No wearable mechanical parts exist inside the probe assembly. Routine maintenance only requires periodic pipeline purging treatment and annual calibration verification according to on-site medium cleanliness. Replacing the internal Ni2 sensing cartridge separately is allowed instead of whole-probe replacement when performance decays, greatly cutting spare parts procurement costs for enterprises.

With intrinsic safety structural design, the probe can be deployed in Zone 1 / Zone 2 explosive hazardous areas when used together with certified safety barriers, complying with ATEX safety specifications such as BAS01ATEX1096X. Typical application scenarios include factory dry air systems, natural gas transmission pipelines, power station SF6 gas monitoring, chemical tail gas purification and heat treatment furnace protective atmosphere quality monitoring.