Signet 9900 Operating Instructions Manual page 12

Sensor Wiring
NOTE: Loop Power cannot be used to power Signet models 2000, 2100, 2507, 2537,
2551 or 2552 Flow sensors.
Wiring for:
515/8510 525
FLOW
2000 2100
Wiring for:
2537-5
12 9900 Transmitter
2536/8512 2540
2507
FLOW
-
Blk Red Shld +
S1
Frequency
Black
Red
Shield
3
9900 S L Inputs
S2
Black
Red
White
Technical Notes:
• See corresponding product
manuals for maximum cable
length.
• Maintain cable shield through
cable splice.
• Route sensor cable away
from AC power lines.
• 515/8510 and 525
installations, connect the
silver (shield) wire to earth
ground in case of EMI noise
interference.
Technical Notes:
• Wiring terminals on the 2537
are rated for 16 to 22 AWG
wires.
• The cable must be
7 mm to 10 mm in diameter
(0.275 in. to 0.394 in.) to seal
properly in the liquid-tight
connector.
• The conduit ports have
½-inch NPT threads.
After routing the cables,
seal the port with a liquid-
tight conduit connector
(3-9000.392-1) or with
conduit.
• The 2537 models can
connect to the 9900 via a
relay frequency signal or with
a Digital (S L) output. Signet
3
recommends installing the
Digital (S L) output model
3
(2537-5) because Digital
(S 3 L) is more accurate.
• See 2537 instruction manual
for additional installation
information.