GE Sensing TF Series Probe Data sheet
GE
Sensing
TF Series
Panametrics Aluminum
Oxide Moisture Probe
TF Series probe is a Panametrics
product. Panametrics has joined
other GE high-technology sensing
businesses under a new name
_
GE Industrial, Sensing.
This Panametrics aluminum oxide moisture sensor probe
measures moisture concentration in gases and nonaqueous liquids from trace to ambient levels. It is
designed to be used in conjunction with Moisture
Image®Series 1, Moisture Image Series 2, and Moisture
Monitor™ Series 3 moisture analyzers and PM880
portable hygrometer for industries including:
• Petrochemical
• Natural gas
• Industrial gas
• Semiconductor
• Furnace gas/heat treating
• Power generation
• Air dryer
• Pharmaceutical
• Aerospace
Applications
Features
• Intrinsically safe
• Ambient to ppb moisture measurement
• Built-in temperature and pressure sensors
• Calibrations traceable to National Institute of
Standards and Technology (NIST) or National
Physical Lab U.K. (NPL)
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GE
Sensing
Panametrics Hygrometer
Systems and Moisture Probes
Panametrics aluminum oxide moisture probes have set
the standard of performance and value in industrial
moisture measurement for more than 40 years. In use,
TF Series probes are coupled to Panametrics hygrometer
consoles by an interconnecting cable. Ease of use, wide
measurement range and rigorous calibration standards
make these systems the preferred choice for industrial
moisture measurement worldwide.
Built-In Pressure and
Temperature Measurement
The three-function TF Series probe measures pressure
and temperature, in addition to moisture content . This is
because accurate determination of many moisture
measurement parameters requires knowledge of the
process temperature and pressure. GE eliminated the
inconvenience and limitations associated with installing
and using separate temperature and pressure sensors
by building that capability directly into the TF Series
probe. A nonlinear negative temperature coefficient
(NTC) thermistor to measure temperature from
–22°F to 158°F (–30°C to 70°C) and a choice of five
solid-state piezoresistive transducers are available to
measure pressures up to 5000 psig (345 bar).
Temperature and pressure input data are used by
Moisture Image Series 1 and 2 analyzers, Moisture
Monitor Series 3 analyzer and PM880 portable
hygrometer to determine parameters such as parts per
million (ppm) H2O and relative humidity.
True Absolute Humidity Sensors
Film thickness of the oxide layer is critical to the
performance of this type of sensor. GE manufactures
sensors with an oxide film thickness that causes them to
exhibit true absolute humidity rather than relative
humidity response. This critical film thickness also gives
the TF Series probe quick response and exceptional
calibration stability.
Rigorous Calibration Standards
Traceable to NIST/NPL
The aluminum oxide sensor of each TF Series probe is
individually calibrated in one of the world’s most
advanced moisture calibration facilities. Developed over
several decades, this facility generates precisely known
moisture concentrations, traceable to NIST/NPL, to which
each sensor is exposed during the calibration process.
All data is gathered and stored by a dedicated computer
system. Calibrations are repeated over a period of many
months to ensure the stability of each individual
moisture probe. Only those probes that meet GE’s
demanding specifications for accuracy and stability are
shipped to customers.
Installation Flexibility
TF Series probes are designed to be located at the
process, exactly where the measurement is needed.
Operating temperature is –166° to 158°F
(–110°C to 70°C). The probe can withstand pressures up
to 5000 psig (345 bar). No minimum flow rate is required.
In some cases, TF Series probes can be installed directly
in the process line. More often, to ensure the integrity of
the moisture measurement, a sample conditioning
system is recommended.
GE designs and manufactures a line of reliable,
field-proven conditioning systems to meet the demands
of most applications. If required, a special system will be
designed to meet unique application needs.
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