Edgetech Instruments DewMaster Specifications

A High Preci si on Dew /Frost Point Hyg ro met er

Featuring Flow-Through, Insertion and Chemically
Resistant Chilled Mirror Sensors.

The Edgetech Instruments DewMaster is a fast, multi-function,
high precision chilled mirror hygrometer for continuously
monitoring the dew/frost point temperature, parts per million
water vapor by volume or percent relative humidity in gas
streams. Based on the pri mary metho d chilled mirror
measurement technique, it features a user friendly, easy
access sensor, automatic startup, auto-balance, self­diagnostics, analog outputs, serial interface and alarms.
Unlike other dew/frost point sensor types, chilled mirror
sensors are easily cleaned and rarely require replacement.

The DewMaster is a laboratory grade, high precision,
field proven instru ment with multiple available sensor
configurations and wide applicability to fit all budgets.
Available sensors can be air, fan or liquid cooled to fit the

required dew/frost point range. Applications range from use

as a calibration standard, to monitoring moisture content in
continuous industrial processes.

All Edgetech Instruments hygrometers are manufactured
and supported in the USA in a modern, ISO 9001:2015
regi stered facility with ISO/IEC 17025:2005 accredited
calibration laboratory. All calibrations and certifications are
NIST traceable.

Features:

• Primary method chilled mirror sensor provides extremely
accurate dew/frost point temperature measurement

• Drift free and certified against NIST traceable standards

• Best in class air cooled temperature depression

• Automatic Balance Control mode provides correction for optics

contaminants

Chilled Mirror Dew/Frost Point Hygrometer

Features (continued):

• Easy sensor access and serviceability

• Multiple interface options are standard

• Fan or liquid cooled sensors are available

for low dew/frost point measurement

Other Key Points:

• Robust, easily cleaned chilled mirror
hygrometer for industrial applications

• Remotely or locally mounted sensor options

• Desk top, rack mount, or NEMA 4X enclosure

options

• Pressure compensated dew/frost point

measurement and temperature probe options

• Custom sampling systems available

• Data acquisition modules with wireless

connectivity available

• Can be configured for ambient air
measurements, positive pressure or equipped
with sample extraction pump

Sensor Type Cooling Type

DP/FP Range °C Depression °C Cooling Medium Construction

Insertion sensor (Maximum 100 psi)

DS2 Ambient -40 to 95 60

Ambient air 25°C Aluminum

Flow Through Sensor (Maximum 900 psi)

S2 Ambient -40 to 95 60 Ambient air 25°C Aluminum
S2SC Fan Cooled -45 to 95 65 Ambient air 25°C Aluminum
S3 Fan Cooled -60 to 95 85 Ambient air 25°C Aluminum
S3 Liquid Cooled -70 to 95 95

Secondary Cooling 0 to 20°C Aluminum

Corrosion Resistant Flow Through Sensor (Maximum 300 psi)

X3 Ambient -40 to 95 65 Ambient Air 25°C 316 Stainless Steel
X3F Fan Cooled -60 to 95 85 Ambient Air 25°C 316 Stainless Steel
X3SF Fan Cooled -70 to 95 95 Ambient Air 25°C 316 Stainless Steel
X3LC Liquid Cooled -80 to 95 115 Secondary Cooling 0 to 20°C 316 Stainless Steel
X3CC Liquid Cooled -90 to 95 125

Secondary Cooling -15 to 0°C 316 Stainless Steel

Notes:

S Series always has auxiliary liquid cooling ports installed.

X Series is configured for air cooling or secondary liquid cooling.

Consult Edgetech Instruments for pressure rating of specific sensor models.

Measurement Performance

DewMaster with X3 Sensor

Toll Free: 800-276-3729 Ph: 978-310-7760 Fax: [phone]

E-mail: [e-mail]

Web: www.edgetechinstruments.com

Technical Specifications

ISO/IEC 17025:2005 Accredited

ISO 9001:2015 Registered

Measurement Performance (continued)

Relative Humidity and PPMv Ranges:

0 to 100% RH with all sensors, non-condensing

conditions

0 to 999,999 PPMv with all sensors,

non-condensing conditions

Accuracy, All Sensors:

±0.2°C (0.36°F) dew/frost point standard
±0.1°C (0.18°F) dew/frost point optional
±0.5% of full scale pressure

Remote Sensors:

Up to 250 feet (76 meters) from console

with cable

Display Resolution:

0.1°C or °F

0.01 psia

0.1 PPMv below 1000 PPMv
1 PPMv above 1000 PPMv

Air Temperature Sensor Range:

-100 to 250°C (-148 to 482°F)
±0.1°C accuracy

Packaging

Weight:

Bench-Top: 6 lb. (2.8 kg)
Rack Mount: 7 lb. (3.2 kg)
NEMA 4: 19 lb. (8.6 kg)

Dimension:

Bench-Top with S3 Mounted: 11 in. W x 5.2 in. H x

17 in. D (27.9 cm W x 13.2 cm H x 43.2 cm D)

Rack Mount with S3 Mounted: 19 in. W x 7 in. H x

17 in. D (48.3 cm W x 17.8 cm H x 43.2 cm D)

Standard rack panel mounting dimensions

NEMA 4: 11.6 in. W x 13.6 in. H x 6.2in D (29.5

cm W x 34.6 cm H x 15.9 cm D)

Mounting:

Bench-top: Standard
Rack Mount: Optional
Wall-mount NEMA 4: Optional

Sensor Materials:

Chromium, glass, epoxy, and anodized aluminum

or 316 stainless steel

Functional

Power Requirements:

90 to 230 VAC ±10%, 50 to 400Hz

Operating Temperature:

Control Unit: -10 to 60°C (15 to 140°F)

Sensors: -40 to 100°C (-40 to 212°F)

Auxiliary Coolant: To augment temperature

depression capability of sensor when necessary:

Water (or other liquid): 0.5 gal/min (2 l/min) at 100

psia maximum

Sample Pressure Range:

Depends on sensor model, see chart above and

consult Edgetech Instruments Inc

Sample Flow Rate:

0.5/5.0 SCFH (0.25 to 2.4 l/min)

Outputs (3 outputs available):

4 to 20 mA, 0 to 5 Vdc, RS-232

Track Or Hold:

Outputs (analog and digital), alarms can be set to

track or hold while in Automatic Balance Control
or programming mode

Alarms:

Two Form C, SPDT alarm relays rated for 3 A at

24 Vdc, 120 Vac. Alarm mode (high or low)
programmable from keyboard or RS-232. Alarm
set points programmable from -99.9 to 99.9°C
(-148 to 212°F) from keyboard or via RS-232,
alarm can be latched or unlatched

Display:

8 line LCD graphic data display, backlight

3 parameters display simultaneously

Accessories/Options

Remote Mounting Kit:

Remote sensor cable, standard length 10 ft. (3 m)
Lengths up to 250 ft. (76 m) available

Panel/Rack Mounting Kit:

Optional

NEMA-4 Wall Mount Enclosure:

Optional

Explosion-Proof Sensor Housing:

Optional

In-Line Particulate/Coalescing Filter:

Optional

Sampling Module:

Optional, consists of a vacuum pump, 10.7 to 19.2

psia (0.75 to 1.35 kg/cm2) variable area flowmeter
assembled in a weather tight NEMA-4 enclosure,
with bulkhead fittings. Specify 115 or 230 Vac,

50 or 60 Hz

MADE IN THE USA

Rev. v11