3
Signet 2537 Flowmeter
3. Installation
3.3 Plastic sensor installation tips
•
Inspect the sensor O-rings for nicks and other damage that
may compromise the seal.
•
Lightly lubricate the sensor O-rings with a suitable lubricant
before each installation. Do not use petroleum based
lubricants.
•
Using an alternating/twisting motion, lower
the sensor into the
fi
tting, making sure the
conduit ports on the yellow housing are
pointing in the direction of
fl
ow.
•
Engage one thread of the sensor cap then
turn the sensor until the alignment tab is
seated in the
fi
tting notch.
•
sensor
cap
tab
notch
Wiring
Electrical connections to this product should be made only by
quali
fi
ed personnel.
To access the wiring terminals:
•
Turn yellow cap ¼ turn counterclockwise to remove.
•
Remove the two retaining screws and remove the black
cover.
•
Route all cables through the conduit ports before
connecting them to the terminals.
•
Wiring terminals are rated for 16-22 AWG conductors.
•
The cable must be 7 to 10 mm in diameter (0.275 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.
•
For conduit installations:
• Thread conduit with ½ in. NPT threads directly into the
conduit port.
• For conduit with ISO threads, use the black thread
adapter included with the connector kit.
• To comply with NEC requirements, do not use any metal
conduit in the installation.
2537 Paddlewheel Flowmeter
for ½ in. to 4 in. pipe
130 mm
5.12 in.
97 mm
3.82 in.
2537 Paddlewheel Flowmeter
for 5 to 8 in. pipe
171 mm
6.73 in.
97 mm
3.82 in.
Dimensions
S1
S1
S2
S2
3-8900.621C
I/O Module 3-8900.401-X
1
2
3
4
5
6
7
8
9
10
11
12
13
14
+5VDC (Black)
Freq. Input (Red)
GND (Shield)
+5VDC (Black)
Freq. Input 2 (Red)
S L (Red)
GND (White/Shield)
+5VDC (Black)
S L (Red)
GND (White/Shield)
3
3
Analog Output 1
Analog Output 2
(if applicable)
(if applicable)
Frequency
Input
1
Frequency
Input 2
OR
S3L
Input
2
S3L
Input
1
+
-
+
-
Blk
Red Shld
-
+
Wiring: Digital (S
3
L) Output
The Digital (S
3
L) output is compatible with the 3-8900 Multi-Parameter Controller.
-
+
S1
S2
Blk
Red Shld
-
+
-
+
-
+
-
+
-
+
T
P
t
WIRING DIAGRAM
BLK
RED
SHLD
Sensor
PW/OUT
+
Power Rating:
5 - 6.5VDC 0.03 AMP
3-2505.613A
T
P
t
T
P
t
T
P
t
S1
S2
Blk
Red Shld
-
+
S1
S2
Blk
Red Shld
-
+
WIRING DIAGRAM
BLK
RED
SHLD
Sensor
PW/OUT
+
Power Rating:
24VDC 0.03 AMP
3-2505.61
1A
N/O
COM
N/C
Dry-Contact
Relay
Relay Rating:
5A @ 250VAC
5A @ 30VDC
Using the liquid-tight
connector
Using conduit
HAND-TIGHTEN THE THREADED NUT ONTO THE
INSTALLATION FITTING. DO NOT USE TOOLS! DO
NOT USE THREAD SEALANT OR LUBRICANTS ON
THE FITTING THREADS OR THE SENSOR CAP.
