ADDITIONAL INPUT OPTIONS
The B2800 flow monitor is capable of receiving magnetic pickup input or a contact closure input Since most Blancett flow
meters utilize a magnetic pickup, the 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
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
O
MAX =
(Loop Supply Voltage - 5)
0.02
Battery Power
Loop Power
Figure 7: Circuit board layouts
BATTEOY OEPLACEMENT
Battery powered monitors use a single 1 5V, D size alkaline battery When replacement is necessary, use a clean fresh battery
for continued trouble-free operation Save the total to memory before removing the battery
DO NOT OPEN EXPLOSION PROOF ENCLOSURE UNLESS THE AREA IS KNOWN TO BE FREE OF HAZARDS. FAILURE
TO MAKE THE AREA SAFE BEFORE OPENING THE ENCLOSURE CAN RESULT IN A HAZARDOUS SITUATION WITH A
POTENTIAL FOR INJURY.
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
Page 13
March 2017
DSY-PM-00279-EN-03
