3
1.60”
(40.6mm)
3.65”
(92.7mm)
2.95”
(74.9mm)
.88”
(22mm)
.60”
(15mm)
Model: 340BN
S/N 340BN-XXXXXX
Comm LED
Data
Industrial
MS/TP
Sensor Input
Shield
Signal
Power Out
-
REF
+
_
®
BACnet
Fa
ct
or
y P
or
t
NT
PD
PU
D.I.C.
Comm
Port
+
-
Po
w
er In
AC C /DC
AC L /DC
1
2
3
Te
m
p 1
1
3
Te
m
p 2
2
Input LED
.20”
(5mm)
INSTALLATION
Mechanical Installation
The Model 340BN transmitter may be surface mounted onto a
panel, attached to DIN rails using adapter clips or wall mounted
using optional enclosures.
Location
Although the Model 340BN device is encapsulated, all wiring con-
nections are made to exposed terminals. The unit should be pro-
tected from weather and moisture in accordance with electrical
codes and standard trade practices.
In any mounting arrangement, the primary concerns are ease of
wiring and attachment of the programming cable. The unit gener-
ates very little heat so no consideration need be given to cooling
or ventilation.
Surface Mount Installation
The Model 340BN may be mounted to the surface of any panel
using double-sided adhesive tape or by attaching fasteners
through the holes in the mounting flanges of the unit.
DIN Rail Mounting
Optional clips snap onto the mounting flanges allowing the Model
340BN to be attached to DIN 15, 32, 35 mm DIN rail systems.
Wall Mounting
Optional metal and plastic enclosures are available for the Model
340BN. The enclosure is first attached to the wall using fasteners
through its mounting holes.
After wiring, the transmitter may be attached to the enclosure
with the terminal headers facing inwards using the slots in the
mounting flanges. As an alternate mounting arrangement, the
Model 340BN may be fastened to the box cover using double-
sided adhesive tape.
Temperature Sensor Installation
The location of the temperature sensors with respect to the flow
sensor is important to the accuracy of the energy calculation. The
temperature sensor installed closest to the flow sensor will be
considered as Temperature Sensor T1. Temperature sensors
should not be installed closer than a distance equal to 10 pipe
diameters upstream or 5 pipe diameters downstream from the
flow sensor. Irregular velocity profiles caused by improperly lo-
cated valves, fittings, and thermowells, etc. can lead to inaccu-
rate flow indication and therefore affect accuracy of the energy
calculation.
Figure 2: Model 340BN Metal Box Dimensions
4.5”
4.50”
2.00
”
Side
Top
Sid
e
4.60”
4.60”
2.25
”
Side
Top
Side
3.25”
5.125”
Figure 3: Model 340BN Plastic Box Dimensions
Figure 1: Model 340BN Dimensions
