Edgetech Instruments DewTrak-II Specifications

ISO/IEC 17025:2005 Accredited

ISO 9001:2015 Registered

Applications include:

HVAC duct systems
Critical purged atmospheres
Glove box environmental chambers
Pharmaceutical testing and isolation

chambers
Engine air intake and exhaust testing
Modified atmosphere packaging
Semiconductor manufacturing furnace

and lithography
Medical packaging
Dryer efficiency
Biologics and cell culture
Fluidized beds
Food storage and packaging
Air make-up for clean rooms and data

centers.
Checking polymer and metal oxide probes

A Precision Dew Point Hygrometer for Industrial
and Process Applications.

The Edgetech Instruments DewTrak ll Dew/frost Point/
Humidity Transmitter is a compact, cost effective, primary
method chilled mirror hygrometer designed to continuously
measure the moisture content of gases. Housed in a
weatherproof enclosure, its modular design is available in
a variety of mechanical configurations to accommodate a
wide array of applications.

The DewTrak II provides high accuracy with long term
stability and repeatability. It uses the chilled mirror dew/
frost point temperature condensation principle to accurately
determine the water vapor concentration in gas mixtures.
The result is a highly precise yet durable mois t u r e
measurement device with a very long life cycle.

The DewTrak II is available with either the Edgetech
Instrum ents D Sensor or the higher perf orm ance DX
sensor. Either may be mounted directly to the hygrometer’s
chassis for ambient air monitoring or they may be mounted
remotely for insertion into glove boxes, HVAC ducts, environmental
test chambers, circulation pipes, refrigerated storage
rooms, engine test chambers and many other environments.

Features:

Precision dew/frost point or relative humidity transmitter
Primary method chilled mirror sensor requires no calibration
Provides high accuracy
Long life, easily serviceable sensor
Rapid response that quickly detects any change of conditions
No false readings or accuracy drift
Low cost of ownership
Remote insertion or local wall mount sensor
Flexible installation options
Available with or without display
Configurable analog outputs and alarm relay options
Bi-directional serial interface
Communications adaptable to user requirements

Multiple display parameters:

Dew/Frost point temperature in °C or °F
Percent relative humidity
Parts per million by volume
Parts per million by weight
Grams per kilogram
Grams per cubic meter
Grains per pound
Wet bulb temperature

Chilled Mirror Dew Point Hygrometer

DewTrak II Hygrometer

With the DX Sensor

Toll Free: 800-276-3729 Ph: 978-310-7660 Fax: [phone]

E-mail: [e-mail]

Web: www.edgetechinstruments.com

Technical Specifications

ISO/IEC 17025:2005 Accredited

ISO 9001:2015 Registered

Measurement and Performance:

Ranges at 25°C ambient:
D Sensor:

Dew/Frost Point (Standard) -40°C to 60°C
(-40°F to 140°F)

Air Temperature (Optional) -40°C to 60°C
(-40°F to 140°F)

Relative Humidity (Optional) 1% to 95%

DX Sensor:

Dew/Frost Point (Standard) -40°C to 95°C
(-40°F to 195°F)
Air Temperature (Optional) -100°C to 250°C
(-148°F to 482°F)

Relative Humidity (Optional) 1% to 95%

Accuracy:

Dew/Frost Point: ±0.2°C (± 0.5 gr/lb.)
Temperature: ±0.1°C

Hysteresis:

Negligible

Repeatability:

±0.05°C dew/frost point (±0.1 gr/lb.)

Response:

1°C/sec (2.7 gr/lb./sec) not including settling time

Flow Rate:

Static to 3,000 linear ft./min

Pressure:

D Sensor: 100 psig maximum
DX Sensor: 50 psig maximum
Consult Edgetech Instruments for elevated pressure

Functional:

Outputs:

Analog: 2; 4 to 20 mA, 0 to 5 Vdc or, 0 to 10 Vdc
Serial: 1; RS-232

Load:

4 to 20 mA: 0 to 250 ohms
0 to 5/10 Vdc: 1 k ohm or higher

Relay Outputs:

2 programmable alarm relays:
K1: clean mirror / alarm 1
K2: servolock / alarm 2

Contact rating: normally open (NO) 3A at 25 Vac,

or 30 Vdc

Remote Cable:

Dew/frost point: 10 ft. standard, 50 ft. maximum
Air temperature (Optional):10 ft. standard, 50 ft.

maximum

Mirror:

Standard, chrome plated
Optional, platinum or stainless steel
2 stages of cooling (TEC) with a depression of 60°C

Power Supply:

24 Vdc ±20%, 1 A maximum

EPA Noise Level:

< 0.02 K

Weight:

3 lb. (1.4 kg)

Dimensions:

Controller: 5 in (130 mm) W x 5 in (130 mm) H x 4 in (99 mm) D
Dew point probe: 9 in. (230 mm) L x 3 in. (80 mm) Dia.
Temperature probe: 10 in. (250 mm) L x 0.4 in. (10mm) Dia.

Rev. v7