Manual

ADDITIONAL INPUT OPTIONS
The B2800 flow monitor is capable of receiving magnetic pickup input (small signal sine wave) or a contact closure input
(pulse). Since most Blancett turbine flow meters utilize a magnetic pickup, the B2800 flow monitor is shipped configured for
magnetic pickup input. To change to a contact closure input, remove JP2 from the bottom two pins and jumper them to the
top two pins. See Figure 5.
Pulse Out Freq. In4-20 mA
+
-
+
-
+
-
10k
30V DC (Max)
20 mS Pulse
Mag
Input
Pulse
Inuput
TB2 Reset
+ Pulse In
Magnetic Pickup
R
MAX
=
(Loop Supply Voltage - 5)
0.02
- Pulse In
10…30V DC
- Common
Pulse Input Card
Analog Input Card − 4-20 mA
Figure 4: Wiring diagram
D 1.5 VOLTS
CAUTION DO NOT CONNECT IMPROPERLY CHANGE OR DISPOSE OF IN FIRE. BATTERY MAY EXPLODE OR LEAK. MADE IN U.S.A.
ALKALINE BATTERY
Pulse Out Freq. In4-20 mA
+
-
+
-
+
-
External
Totalizer Reset
10k
30V DC (Max)
20 mS Pulse
N/C N/C
Mag
Input
Pulse
Inuput
TB2 Reset
Pulse Out Freq. In4-20 mA
+
-
+
-
+
-
External
Totalizer Reset
10k
30V DC (Max)
20 mS Pulse
Mag
Input
Pulse
Inuput
TB2 Reset
10…30V DC
1…5V DC
250 Typ
R
MAX
=
(Loop Supply Voltage - 5)
0.02
Battery Power Loop Power
Figure 5: Circuit board layouts
Programming Manual
Page 11 November 2013