GE Panametrics PM880 Portable Moisture Analyser

The GE Panametrics PM880-1-2-1-0-0, also cataloged as the PM880 Portable Hygrometer, operates as a dedicated hardware component for moisture measurement in gases and non-aqueous liquids within industrial processing environments. The hand-held analyzer interfaces directly with GE Moisture Image Series, TF Series, and M Series aluminum oxide moisture probes using standard LEMO-to-bayonet connection cables. Internal processing circuitry evaluates primary sensor impedance signals to yield real-time dew point, temperature, and pressure parameters.

Hardware Specifications

Backplane Bus & Deterministic Communications

The unit maintains backplane bus communication velocity and firmware flash compatibility across PC-based analysis networks through its integrated IrDA port. Internal FLASH memory executes deterministic logging routines to capture up to 60 distinct site files without data corruption during rapid power cycles.

The high-density digital signal processing core handles simultaneous unit conversions across multiple parameter channels (dew point in deg C/deg F, ppmv, ppmw, and lb/MMSCF) while maintaining low communication latency. The physical IrDA interface isolates internal logic circuitry during PC downloads, preventing ground potential shifts from affecting stored field log data.

Frequently Asked Questions

Q: How does operating the PM880 below 0 deg C impact internal battery performance and field operation?

A: Operating at temperatures below 0 deg C increases internal battery cell resistance, reducing typical continuous run time from 24 hours down to approximately 15 hours.

Q: What physical cable interfaces connect the PM880 enclosure to MIS and M Series probes?

A: Connections require shielded LEMO-to-bayonet cables that maintain IP67 environmental sealing at the instrument port while suppressing electromagnetic noise.

Q: How does the unit process memory storage when log capacity reaches 60 site files?

A: Once FLASH memory reaches 60 site files, internal firmware generates a memory limit flag, requiring manual file offloading via IrDA or deletion before initiating new logging routines.

Field Installation Guidelines

Mount the sensor probe into the sampling cell assembly prior to connecting the LEMO cable to the PM880 top panel. Tighten all sample line fittings to ensure a leak-tight seal before introducing process gas into the measurement chamber.

Route signal cables away from high-voltage AC conduits to prevent noise pickup on low-level probe impedance signals. Connect all sampling system ground terminals to a local earth point to dissipate static charges generated by gas flow through the sample tubing.