Edgetech Instruments PDM75-X3 Specifications
ISO/IEC 17025:2005 Accredited
ISO 9001:2015 Registered
The Model PDM75-X3 chilled mirror hygrometer
features drift-free accuracy, NIST traceability,
low maintenance, high durability and ease of
use in a portable package, resulting in a system
ideally suited for the demands of field use.
The Model PDM75-X3 has all the standard features of the well
known Edgetech Instruments DewMaster Hygrometer in a
portable package, with a modular chilled mirror sensor that is
chemically resistant to background gases, configured to meet
your dew/frost point measurement requirements.
Whether you use it as a field transfer standard, to spot check
your process air dryness or to measure endo gas dew/frost
point, you will find the PDM75-X3 delivers the Edgetech
Instruments Advantage: an ideal system tailored to your
application needs. Choose the customized sampling system
designed to match your measurement requirements.
Configure it for positive pressure sample gas or to extract
a gas sample using an integrated vacuum pump. Select
the best user interface options to meet your needs. The
PDM75-X3 will be ready to use, right out of the box.
All Edgetech Instruments dew/frost point hygrometers are
manufactured and supported in the USA in a modern, ISO
9001:2015 register ed facility with ISO/IEC 17025:2005
accredited cali bration labor atory. T he PDM75-X3 is
delive red with a NIST tra ceability certificate.
Features:
• Chemically resistant, primary method dew/frost point sensor
• Drift free and certified against NIST traceable standards
• Best in class air cooled temperature depression
• Wide measurement ranges from -70°C to +70°C
dew/frost point temperature
• Remotely or locally mounted sensor options
• Automatic Balance Control mode provides automatic
correction for optics contaminants
• Rugged, high impact portable case
• Multiple interface options
• Choice of sampling systems
Portable, Precision Chilled Mirror Hygrometer
Applications:
• Compressed air
• Furnace/heat treating
• Fluidized bed dryers
• Metrology
• Plastic molding
• Pharmaceutical
• Laboratories
• Clean rooms
• Power and energy systems
• Air brake dryer monitoring
Click here for the PDM75-X3
application note.
The PDM75-X3 Portable Hygrometer
Toll Free: 800-276-3729 Ph: 978-310-7760 Fax: 978-310-7767
E-mail: H2O@edgetechinstruments.com
Web: www.edgetechinstruments.com
Technical Specifications
ISO/IEC 17025:2005 Accredited
ISO 9001:2015 Registered
Sensor Type:
Primary method, chemically resistant, chilled mirror
dew/frost point sensor
Sensor Construction:
Wetted materials-Standard X3: 316 stainless steel,
Teflon, Viton seals
Mirror: chrome (platinum or 316 SS optional)
Easy access flip top mirror access
Measuring Range:
Dew/Frost Point Temperature:
X3 Standard:
65°C depression, +75°C to -45°C
X3F Fan Cooled:
85°C depression, +75°C to -65°C
X3SF High Efficiency:
97°C depression, +75°C to -70°C
No liquid cooling required.
Other ranges available, consult factory.
Accuracy:
Dew/frost point: ±0.36°F (±0.20°C)
General:
Display: 8 Line LCD. Graphic data display, backlit,
3 parameters display simultaneously
Operating Temperature: 32°F to 122°F
(0°C to 50°C)
Sample Connection: 1/4” compression fitting,
configured for positive pressure sample gas
standard
Sample Flow Rate: 0.5 to 5 SCFH with integral
flow meter
Sample Pressure: 0 to 150 psig, higher pressures
available, consult factory
Power & Outputs:
Power: 90-230 VAC ±10%, 50 to 400Hz
Analog Outputs: 0 to 5 Vdc, 4 to 20 mA, 0 to 10 Vdc
or 0 to 20 mA. User scalable, to drive peripheral
devices.
Available simultaneously, one output per
measurement parameter. Scalable throughout the
entire operating range of psychrometric variables.
Programed via front panel or serial port
Serial Output: RS-232
Relay Alarms: Two, user configurable, 1 FORM C,
10A @ 240 Vac, 8A @ 24 Vdc, 1/2 HP @ 240
Vac. Can be set for latching or auto-reset mode.
Rev. v5
Weights & Dimensions:
Weight: 24 lb.
Enclosure Dimensions: 14.75” H x 18” W x 7” D
Plastic carrying case.
Options:
Vacuum pump for sample extraction
Pressure transducer for automatic pressure
compensation
Serial to Blue Tooth data acquisition
Remote sensor mounting kit
The PDM75-X3 Portable Hygrometer
Click here for the X3 Chilled Mirror
Sensor Brochure
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