User’s Manual BDF-xx-TF
FEMA ELECTRÓNICA - Page 2
Model TF
Large displays for frequency signals (impulse / second)
The BDF series of large displays with ratemeter function
offer an indication proportional to the received frequency
signal, measured in impulses per second. The instrument
recognizes impulses from NPN and PNP sensors, Mechani-
cal Contacts, Encoders, and others.
The received «impulses per second» signal is multiplied by
internal «scale factors» and loaded on display, allowing to
display in engineering units (meters per minute, RPM, m3
/ hour), ... Position for the decimal point is programmable.
All instruments with 4 or 6 digits format, with digit height 57
or 100mm, in red color.
The mechanical of the BDF instruments is a very strong and
sturdy aluminium housing anodized in black color, for panel
mount, and for wall mount as an option. The front lens is antir-
reflexive and is firmly inserted on the aluminium profile with a
rubber gasket around, providing IP65 protection on the front.
The signal wires are connected to plug-in screw clamps for
higher security of the connections, accessible at the rear side
of the instrument. The power is connected to a 3 terminal plug
(2 power connections and 1 earth) containing an integrated
protection fuse and an additional fuse as spare part.
SIZE BDF-24 -
Instrument with 4 digits
digit 57mm height (2,3’’)
SIZE BDF-44 -
Instrument with 4 digits
digit 100 mm height (4,0’’)
SIZE BDF-26 .-
Instrument with 6 digits
57mm digit height
SIZE BDF-46 .-
Instrument with 6 digits
100mm digit height
Sizes
Order reference
BDF
TF
Model
-TF
-
-
-
0
Power
-0 (230 Vac)
-1 (115 Vac)
-6 (24 Vdc
isolated)
-
---
Others
-65
(IP65)*
-
(empty)
R
Color
-Red
-Green
(check for
availability)
-
24
Size
-24
-44
-26
-46
* the IP65 option uses a completely
different type of housing from the
indicated in this documentation.
Check the BDF IP65 housing docu-
mentation for more information.
0/1000Hz=0/1000
Adjust
0/100Hz=0/750
0/35Hz = 0/253
...
NPN
Sensor
NPN
PNP
Namur
Contact
...
