MIS Probe 2
Aluminum oxide
moisture probe
Applications

FeaturesThis 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 the Panametrics Moisture Image
Series 1 analyzer and the PM880 portable hygrometer forindustries including:• Intrinsically safe

• Petrochemical• Calibrations traceable to National Institute of Standards
and Technology (NIST) or National Physical Lab U.K. (NPL)• Natural gas• Industrial gas• Semiconductor• Furnace gas/heat treating• Power generation• Air dryer• Pharmaceutical• Aerospace• Ambient to ppb moisture measurement: 16-bit resolution• Three function capability with moisture sensor and optionalbuilt-in temperature and pressure sensors• Nonvolatile calibration data storage• Requires only twisted pair cabling, allowing probe to belocated up to 3000 ft (914 m) from analyzer• Threaded and VCR mount configurations

Panametrics hygrometer systems
and moisture probes

Rigorous calibration standards
traceable to the NIST/NPL

Panametrics aluminum oxide moisture probes have set thestandard of performance and value in industrial moisturemeasurement for more than 40 years.

The aluminum oxide sensor of each MIS probe is individuallycalibrated in one of the world’s most advanced moisturecalibration facilities. Developed over several decades, thisfacility generates precisely known moisture concentrations,traceable to the NIST/NPL, to which each sensor is exposed
during the calibration process.

In use, the Moisture Image Series probe is coupled toPanametrics hygrometer consoles by an interconnecting
cable. Ease of use, wide measurement range and rigorous
calibration standards make these systems the preferredchoice for industrial moisture measurement worldwide.

Built-in pressure and temperature
measurement
Accurate determination of many moisture measurement
parameters requires knowledge of the process temperatureand pressure. The inconvenience and limitations associatedwith installing and using separate temperature and pressure
sensors have been eliminated, with both capabilities
being built directly into the Moisture Image Series probe. A
nonlinear NTC thermistor to measure temperature from –22°F
to 158°F (–30°C to 70°C), and a choice of five solid-statepiezoresistive transducers to measure pressures up to 5000
psig (345 bar), are available.
Temperature and pressure input data are used by Moisture
Image Series 1 analyzers and the PM880 portable hygrometerto determine parameters such as ppm, lbs/mmSCF andrelative humidity.

MIS electronics module
The real power of the MIS probe comes from an electronics
module that is attached to the moisture sensor probe. The
built-in microprocessor provides 16 bit resolution, a real
performance enhancement, allowing it to detect parts perbillion (ppb) changes in moisture concentration. In addition,
it continuously monitors and compensates the electronics toensure long-term stability.
For convenience, moisture probe calibration data is stored in
nonvolatile EEPROM, so data entry is automatic and safe frompower outage.
The Moisture Image Series probe is intrinsically safe,
saving the expense and installation problems associatedwith explosion-proof housings, purges, or external zener
requirements of IEC/Zone 0 areas.

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 moistureprobe. Only those probes that meet Panametrics demanding
specifications for accuracy and stability are shipped tocustomers.

Installation flexibility
The Moisture Image Series probe is designed to be located at
the process, exactly where the measurement is needed. The
sensor can withstand process temperatures of –166° to 158°F(–110° to 70°C) and pressures from vacuum up to 5000 psig
(345 bar). No minimum flow rate is required. For additional
flexibility, the probe can be located up to 3000 feet (0.9 km)
from the analyzer, connected by inexpensive, unshielded,
twisted-pair cable (AWG 22). As a result, the probe can beplaced in the ideal location, even in a large plant, without
the cost, delays and installation problems associated withspecial cabling.

Specifications
Moisture sensor
Intrinsic safety
Intrinsically safe when connected to a Panametrics moistureseries analyzer, PM880 portable hygrometer or intrinsicallysafe barriers in accordance with the user’s manual. Moistureimage series probe:
BAS01ATEX1095
II 1 G Ex ia IIC T4. (–20°C to +80°C) and CSA C US Class I,
Division 1, Groups A,B,C&D T4, LR44204-23
European compliance
Complies with EMC directive 2004/108/EC and PED 97/23/EC
for EN <25
Type
Aluminum oxide moisture sensor probeCalibration
Each sensor is individually computer calibrated against
known moisture concentrations, traceable to NIST or NPL.
Overall range capability–110° to 60°C (–166° to 140°F)
Available range options• Standard: –80° to 20°C (–112° to 68°F) with data
to –110°C (–166°F)• Ultra-low: –110° to –50°C (–166° to –58°F)• High range data: –80° to 60°C (–112° to 140°F)
Calibrated accuracy at 25°C (77°F)• ±3.6°F (±2°C) above -148°F (–100°C)• ±5.4°F (±3°C) below -148°F (-100°C)

Repeatability• ±0.4°F (±0.2°C) above -148°F (–100°C)• ±0.9°F (±0.5°C) below -148°F (–100°C)

MIS Probe/Analyzer Separation
3000 ft (0.9 km) maximum recommended length (consultfactory for longer distances)
MIS Probe/Analyzer Compatibility• moisture.IQ• PM880 portable hygrometer
MIS Probe/Analyzer Cable
Unshielded, twisted pair, AWG 22

Built-in temperature sensor
TypeNonlinear NTC thermistor (resultant temperature linearized
by microprocessor)
Operating ran– 22° to 158° F (–30° to 70°C)
Accuracy±0.9°F (±0.5°C) overall
Response time (maximum)
One second in well stirred oil or 10 seconds in still air for a 63%
step change in increasing or decreasing temperature

Built-in pressure sensor
TypeSolid-state/piezoresistive
Available ranges• 30 to 300 psig (3 to 21 bar)• 50 to 500 psig (4 to 35 bar)• 100 to 1000 psig (7 to 69 bar)• 300 to 3000 psig (21 to 207 bar)

• 500 to 5000 psig (35 to 345 bar)Temperature• Operating temperature: -4°F to +140°F (–20°C to +60°C)

Accuracy±1% of full scalel• Storage temperature: -22°F to +158°F (–30°C to +70°C)

Pressure rating
Three times the span of the available range toa maximum of 7500 psig (518 bar)

Operating pressure
5 µm Hg to 5000 psig (345 bar)
Limited by optional pressure sensor - see pressure sensor ranges.

Flow range• Gases: Static to 10,000 cm/s linear velocity at 1 atm• Liquids: Static to 10 cm/s linear velocity at density of 1 g/ccPanametrics, a Baker Hughes business, provides solutions in
the toughest applications and environments for moisture,oxygen, liquid and gas flow measurement.
Experts in flare management, Panametrics technology also
reduces flare emissions and optimizes performance.
With a reach that extends across the globe, Panametrics’
critical measurement solutions and flare emissions
management are enabling customers to drive efficiency
and achieve carbon reduction targets across criticalindustries including: Oil & Gas; Energy; Healthcare; Water andWastewater; Chemical Processing; Food & Beverage andmany others.
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(09/2023)

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