Vaisala MMT330 Technical data
MMT330 Moisture and Temperature
Transmitter Series for Oil
The display shows measurement trends,
real time data and history.
www.vaisala.com
The MMT330 transmitter family offers a range of solutions for demanding moisture
in oil measurements.
Features/Benefits
Continuous on-line
▪
measurement of moisture in oil
Ball valve installation – no need
▪
to shut down the process
Incorporates Vaisala HUMICAP®
▪
Sensor – more than 30 years of
field performance
Ten years of experience in
▪
measuring moisture in oil
Excellent long-term stability
▪
Easy to calibrate and maintain
▪
in the field - Compatible with
Vaisala HUMICAP® Hand-Held
Moisture for Oil Meter MM70
NIST traceable calibration
▪
(certificate included)
Analog outputs, WLAN/LAN
▪
The Vaisala HUMICAP® Moisture
and Temperature Transmitter Series
for Oil MMT330 enables fast and
reliable detection of moisture in oil.
The MMT330 can be used in on-line
moisture monitoring and as a control
device, allowing separators and
oil driers to be started only when
needed.
Proper monitoring saves both oil and
the environment. With the MMT330
it is easy and economical to monitor
the changes of moisture in oil.
Reliable Vaisala
HUMICAP® technology
The MMT330 incorporates the latest
generation of the Vaisala HUMICAP
Sensor, which is the result of ten
years of eld experience. It was
developed for demanding moisture
measurement in liquid hydrocarbons.
The sensor's excellent chemical
tolerance provides accurate and
reliable measurement over a wide
measurement range.
For diverse applications
and demanding
conditions
Because of the variety of probes, the
transmitter can be used in lubrication
systems, hydraulic systems, and
transformers.
Indicates the margin to
water saturation
The MMT330 measures moisture in
®
oil in terms of the water activity (aw)
and temperature (T). Water activity
indicates directly whether there is
a risk of free water formation. The
measurement is also independent of
oil type and age.
Water content as ppm
conversion
In addition to water activity, the
MMT330 can output ppm, the average
mass concentration of water in oil.
Vaisala has this conversion readily
availabe for mineral transformer oil.
For other oils, the oil specic
conversion coefcients can be
programmed to the transmitter if the
water solubility of the oil is known.
Graphical measurement
trend and historical
display
The MMT330 can be ordered with a
large numerical and graphical display
with a multilingual menu. It allows
the user to monitor operational data,
measurement trends and up to 1-year
measurement history. The optional
data logger with real-time clock
makes it possible to generate over
four years of measured history, and
zoom in on any desired time or time
frame.
The display alarm allows tracking
of any measured parameter, with a
freely congurable low and high limit.
Data collection and
(wireless) transfer to PC
The recorded measurement data
can be viewed on the display or
transferred to a PC with Microsoft
Windows
can also be connected to a network
with an optional (W)LAN interface,
which enables a (wireless) Ethernet
connection.
®
software. The transmitter
Versatile outputs and
easy installation
The MMT330 provides up to three
analog outputs. Galvanic isolation of
supply power and analog outputs is
also available. For serial interface the
USB connection, RS232 and RS485
The Vaisala HUMICAP® Hand-Held
Moisture for Oil Meter MM70 is
designed for field checking MMT330
transmitters.
can be used. In addition, alarm relay
option is available.
The MMT330 has several options for
transmitter mounting. Transmitters
are delivered pre-congured with all
settings installation ready.
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