Edgetech Instruments DPM-99 Specifications
ISO/IEC 17025:2005 Accredited
ISO 9001:2015 Registered
The Edgetech Instruments DPM-99 is a complete
medical air dew/frost point monitoring and
alarm system consisting of a chilled mirror
hygrometer with bright LED display plus audible
and visible alarm functions, all contained in a
NEMA-12 enclosure. Using a primary method
chilled mirror dew/frost point sensor, it is the drift
free alternative, meeting Level 1 and Level 2
requirements of NFPA 99 for Medical Air.
Other types of dew/frost point sensors, due to inherent drift,
require recalibration at regular intervals to remain within their
accuracy specifications. The chilled mirror dew/frost point
sensor of the DPM-99 is a primary method, drift free device,
with accuracy traceable to NIST. Its Automatic Balance Cycle
keeps the sensor’s operation in top condition without the need
for regular maintenance or periodic calibration.
Safety is the foundation of the Edgetech Instruments DPM-99
Medical Gas Dew Point Monitor. It features very high accuracy
and sensitivity, fast response, failsafe alarm functions and
analog outputs. Its ruggedized metal enclosure protects against
electrical interference and environmental shock. An uninterruptable
backup power supply is optional.
All Edgetech Instruments dew/frost point monitors are
manufactured and supported in the USA in a modern,
ISO 9001:2015 registered, ISO/IEC 17025:2005 accredited
facility. All calibrations and certifications are traceable to NIST.
Features:
• Performance exceeds requirements of NFPA 99 for Medical
Gas Dew Point Monitoring
• The drift free alternative for continuous dew/frost point
monitoring
• Easy to install
• Virtually maintenance free
• NIST traceable dew point certification
• Fast response
• Long sensor life
• Rechargeable batteries, recharger included
• Fundamental measurement of moisture content
Drift Free Dew Point Monitor for Compliance with NFPA 99
NF P A 9 9 i s a st a nd a r d i ss u e d b y t he
National Fire Protection Agency. It is the
code used to design compressed air systems
for medical air in domestic hospitals and
healthcare facilities. In these facilities there
are two types of medical air systems, Level 1
and Level 2, defined by the standard as:
Level 1 Medical Piped Gas and Vacuum
Systems. Systems serving occupancies
where interruption of the piped medical gas
and vacuum system would place patients in
imminent danger of morbidity or mortality.
Level 2 Medical Piped Gas and Vacuum
Systems. Systems serving occupancies
where interruption of the piped medical gas
and vacuum system would place patients at
manageable risk of morbidity or mortality.
Further, the NFPA 99 standard states: Dew
point shall be monitored and shall activate a
local alarm and all master alarms when the
dew point at system pressure exceeds +4°C
(+39°F).
The DPM-99 for Medical Air
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 dew/frost point chilled
mirror sensor.
Dew/Frost Point Measurement Range:
S1 sensor: -10°F to 122°F
S2 sensor: -45°F to 122°F
Dew/Frost Point Accuracy:
±0.5°F over entire range
Power: 95-260 Vac, 50 to 400 Hz
Operating Temperature: 32°F to 122°F
Sample Connection: ¼ inch compression fitting
Sample Flow: 0.5 to 5.0 SCFH, through integral flow
meter and valve
Sample Pressure: 0 to 150 psig, 55 psig nominal
Outputs:
Analog: 4 to 20 mA
Range: -58°F to 122°F
Compliance: 9.0 Vdc, 450 ohms
Rev. v5
Display: 8 digit alphanumeric LED, 0.5” high, red
Alarm Audible: >98 db at 2 feet with means to
temporarily disable
Alarm Visible: Flashing display message
Alarm Relay: 1 FORM C, non-latching, 10 A @
240 Vac, 8 A @ 24 Vdc, 1/2 HP @ 240 Vac,
programmable
Dimensions: 14”H x 10.7” W x 3.75”D
Weight: 7 lb.
Mounting: Wall mount standard
Material: Aluminum
Low Dew/Frost Point Kit: 2-stage sensor
(recommended for desiccant dryers)
Filter Kit: In-Line particulate/coalescing filter
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