The Data Industrial Series 340LW Btu Transmitter is an economical, compact device for sub-
metering applications that use the L
ON
W
ORKS
®
protocol in an addressable network.
The 340LW calculates thermal energy using the signal from a flow sensor installed in a closed
pipe system, and the signals from two 10k
Ω
temperature thermistors installed in the systems inlet
and outlet points. The flow input may be provided by any Data Industrial sensor and many other
pulse or sine wave signal flow sensors.
The onboard microcontroller and digital circuitry make precise measurements and produce
accurate, drift-free outputs. The 340LW is commissioned using Data Industrial Windows
®
based
software. Calibration information for the flow sensor, units of measurement and output scaling
may be preselected or entered in the field. While the unit is connected to a PC or laptop
computer, real-time flow rate and total, temperatures and energy rate and total are available.
The Series 340LW Transmitter features three LED’s to verify input and output signals.
The L
ON
W
ORKS
®
communications protocol allows the Series 340LW to be assigned to any one of
255 addresses on a single 2-wire buss. Outputs may include raw data such as flow rate and
temperature of either thermistor, or computed or stored data such as energy rate, energy total,
flow total, or temperature differential.
The Series 340LW Btu Transmitter operates on AC or DC power supplies ranging from 12 to 24
volts.
The compact cast epoxy body measures 3.65”(93mm) x 2.95”(75mm)
and can be easily mounted on panels, DIN rails or enclosures.
PN# 72038
5/14/02 Rev A1
®
Data
Industrial
DATA INDUSTRIAL CORPORATION
11 Industrial Drive, P.O. Box 740 Mattapoisett, MA 02739-0740 USA
Phone: (508) 758-6390 FAX: (508) 758-4057 email: [email protected]
Series 340LW
Btu Transmitter
by Data Industrial
Owner ’s
Manual
Sensor
LED
Service
Wink
AC L/DC
+
AC C/DC
-
Power Out
Signal -
Shield
Model: 340LW
S/N 340LW-XXXXX
®
Com 1
T1-
T1+
T2+
T2-
Com 2
Comm
Mode
L
W
ON ORKS
®
Mode
To ON ORKS
Network
FTT-10A
L
W
®
Service
DIC
Comm
Port
Mattapoisett, MA 02739
Se
ns
or
In
pu
t
