S E R V O T O U G H DF-140E
RELIABLE RESULTS IN A TESTING
RANGE OF ENVIRONMENTS
The DF-140E allows for reliable O 2 measurement
in a wide variety of environments, including
outdoors and in explosive environments with a
NEMA 7 remote sensor enclosure. Using the
revolutionary non-depleting E-Sensor, the
DF-140E delivers reliable readings without
frequent recalibration and periodic
sensor replacement.
FEATURES AND BENEFITS
Long-term reliability and stability with
minimal maintenance
Durability – can be used in Class 1/Division
1 or 2 areas
STAB-EL option allows for accurate
measurement in the presence of acid gases
HAZARDOUS AREA
GAS
OXYGEN
MEASURES
TRACE PPM
APPLICATION
PROCESS
CONTROL
QUALITY
APPLICATIONS
SENSING TECHNOLOGY
Reactor process control
S E R V O P R O AquaXact 1688
A FAST, ACCURATE AND
RESILIENT MOISTURE
MEASUREMENT SOLUTION
The AquaXact 1688 is a rugged ultra-thin film
Aluminum Oxide moisture sensor that enables
the measurement of moisture in a wide variety
of gas phase process applications, such as
glove boxes, air separation units, regenerative
skid dryers, combustion, and instrument air,
with no calibration required after dry-out.
FEATURES AND BENEFITS
Functions as a standalone 4-20 mA transmitter
or remotely interfaces with our digital controller,
MonoExact DF310E and MultiExact 4100
NIST-traceable field-replaceable sensor element
for seamless recalibration
SAFE AREA
GAS MEASURES APPLICATION
WATER DEW POINT PROCESS
CONTROL
PPMV
Stainless steel, weatherproof casing enables
operation in ambient temperatures ranging
from -10°C to +70°C
SENSING TECHNOLOGY
APPLICATIONS
Pressure swing absorber nitrogen skids
Glove boxes
Blanketing and inerting
ALUMINUM OXIDE
Solder reflow ovens
Compressed air generation
Ethylene production
S E R V O T O U G H DF-320E
HIGH-RELIABILITY TRACE AND
PERCENT O 2 MEASUREMENTS IN
HAZARDOUS AREA LOCATIONS FEATURES AND BENEFITS
Designed for use in harsh and hazardous
areas, the DF-320E uses Servomex’s unique,
non-depleting Coulometric sensor technology
to give highly stable O 2 measurements, making
it ideal for applications including hydrogen,
propene and polyethylene production, oil
refining and petrochemical process monitoring. Microprocessor-driven for easy configuration
and maintenance
Coulometric sensor delivers accurate results with
negligible sensor drift, no false low readings,
and no frequent calibration requirements
For use in Class 1/Division 2
HAZARDOUS AREA
GAS
OXYGEN
APPLICATIONS
MEASURES
APPLICATION
TRACE PPM PROCESS
CONTROL
ULTRA TRACE
PPB QUALITY
S E R V O P R O AquaXact 1688 Controller
DIGITAL CONTROLLER PLATFORM
FOR THE AquaXact 1688
Built specifically to work in harmony with the
AquaXact 1688 ultra-thin film Aluminum Oxide
moisture transmitter, this digital controller
provides a high-clarity color touchscreen
display, alarms, relays and advanced
communications protocols, and allows easy
sensor tip replacement in the field.
SENSING TECHNOLOGY
Hydrogen production
Polypropylene production
FEATURES AND BENEFITS
Dew point and ppmv H 2 O measurements
Tight Al 2 O 3 pore structure provides
the AquaXact 1688 sensor with rapid
response times
The dense geometry increases stability
and reduces drift
Compact footprint for easy integration into
your system
Advanced digital communications including
Ethernet, Modbus TCP/IP and PROFIBUS
SAFE AREA
GAS MEASURES APPLICATION
WATER DEW POINT PROCESS
CONTROL
PPMV
SENSING TECHNOLOGY
ALUMINUM OXIDE
Polyethylene production
APPLICATIONS
Oil refining
Air separation units
Petrochemical applications
Glove boxes
Instrument air units
Refining gases
S E R V O T O U G H DF-340E
HIGH-SENSITIVITY TRACE/
PERCENT COULOMETRIC O 2
ANALYZER CERTIFIED FOR
HAZARDOUS AREA USE FEATURES AND BENEFITS
Designed for external locations, the DF-340E
remains stable in changing sample conditions,
and is designed to provide measurements of
trace or percent level O 2 in pure gas streams
and multi-gas backgrounds. It is ideal for
upset-prone applications.
ATEX II and IECEx certified
HAZARDOUS AREA
GAS
MEASURES
Class 1/Division 2 Groups A, B, C and D certified
Suitable for outdoor installation, with NEMA
4-rated sensor enclosure options
Multiple background gas stream monitoring,
with simplified ongoing maintenance
requirements
APPLICATIONS
Pressure swing absorber N 2 skids
Reactor process control
Blanketing and inerting
Oil refinery monitoring
OXYGEN
APPLICATION
TRACE PPM PROCESS
CONTROL
ULTRA TRACE
PPB QUALITY
SENSING TECHNOLOGY
S E R V O P R O MonoExact DF150E
TOUCHSCREEN PPM O 2
ANALYZER FOR GENERAL
INDUSTRIAL APPLICATIONS
With a new and improved digital touchscreen
and icon-driven guided user interface (GUI)
for easier operation, the MonoExact DF150E
combines the reliability of Servomex’s tried and
tested Coulometric O 2 sensor with a more user-
friendly package.
FEATURES AND BENEFITS
Updated digital sensor includes new operation
and maintenance features that reduce cost
of ownership
Back-compatible with DF-150E platform,
including hardware wiring inputs and gas inlets
Servomex proprietary software makes
reporting and parameter control simple
APPLICATIONS
SAFE AREA
GAS MEASURES APPLICATION
OXYGEN TRACE PPM PROCESS
CONTROL
ULTRA TRACE
PPB QUALITY
SENSING TECHNOLOGY
Glove boxes
Heat treating
Solder reflow ovens
Industrial gas production
Petrochemical process monitoring
P08
P09