Badger Meter Blancett B2800 Standard User Manual - Batteoy Oeplacement
BATTEOY OEPLACEMENT
Battery powered monitors use a single 1 5V, D size, alkaline battery When replacement is needed, use a clean, fresh battery to
ensure continued trouble-free operation It is recommended that the total be saved to memory before the battery is removed
1 Carefully unscrew the enclosure cover to access the circuit board
2 Remove the four screws securing the circuit board to the enclosure
3 Lay the circuit board to the side being careful not to pull any wires from their connections
4 Clip the battery retaining wire/strap and remove the battery
5 Replace the battery, being sure to observe the proper polarity and install a new retaining strap or wire
6 Reassemble the monitor, reversing the disassembly process
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 7
Pulse Out
Freq. In
4-20 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 6: Wiring diagram
D
1.5 V
OL
TS
C
A
UTION DO NO
T C
ONNEC
T IMPR
OPERL
Y
CHANGE OR DISPOSE OF IN FIRE
. BA
TTER
Y
M
AY EXPL
ODE OR LEAK
. M
ADE IN U
.S.A.
ALK
ALINE BA
TTER
Y
Pulse Out
Freq. In
4-20 mA
+ - + - + -
External
Totalizer Reset
10k
30V DC (Max)
20 mS Pulse
N/C N/C
Mag
Input
Pulse
Inuput
TB2 Reset
Pulse Out
Freq. In
4-20 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 7: Circuit board layouts
Battery Replacement
Page 9
November 2017
DSY-PM-00278-EN-04