• The sensor must be mounted in a rigid pipe to minimize vibration. Always maximize distance
between the sensor and pump source.
• Horizontal pipe runs: All mounting angles are acceptable. Avoid air bubbles.
• Vertical pipe runs: All mounting angles are acceptable, with upward fl ow preferred.
• A Reynold’s Number is a dimensionless number used to determine the
effects of viscosity, specifi c gravity, and velocity on fl ow
sensor performance. To maintain system accuracy, a
Reynold’s Number greater than 7,500 is required.
• Reynold's number = 3162.76 x Q x Sg/(µ x ID)
where: Q = Flow Rate in GPM;
Sg = Specifi c Gravity;
µ = Dynamic Viscosity in Centipoise;
ID = inside diameter in inches
• Minimum downstream pipe backpressure levels
(full pipes) are required to prevent cavitation
within the sensor (section 8).
Fluid flow
Sensor is shown without
its usual Cap and Adaptor
Vortices
"bluff body"
Piezoelectric
sensor
OPTION: Integral
Transmitter (local
readout)
Signet Flow
Transmitter
Order
Signet
3-8550-1,
3-8550-2, or
3-8550-3
InletOutlet
Flange
Valve/Gate
+GF+
XX DN XX X
XX
10 x I.D.5 x I.D.
+GF+
XX DN XX X
XX
25 x I.D.5 x I.D.
Reducer
25 x I.D.5 x I.D.
2 x 90° Elbow
3 dimensions
25 x I.D.5 x I.D.
2. Installation
• Choose a mounting location that satisfi es section 1 requirements.
Connector
Pipe Union nut
End
Connector
O-Ring
+GF+
XX DN XX X
XX
Flow
• Install sensor with arrow pointing in the direction of fl ow. These
fl ow sensors are not for bi-directional fl ow.
Sensor available in
PP, PVC, PVDF
O-Ring
+GF+
XX DN XX X
XX
90° Elbow
+GF+
XX DN XX X
XX
15 x I.D.5 x I.D.
+GF+
XX DN XX X
XX
2 x 90° Elbow
+GF+
XX DN XX X
XX
20 x I.D.5 x I.D.
.
2.1 Fusion Socket or Solvent Cement Socket
• Fusion socket version: available in HP PVDF, PVDF, or PP.
A George Fischer Socket Fusion Joining Machine is required to
install the end connectors on the pipeline. Refer to the joining
machine manual for installation details.
• Solvent socket version: available in PVC. Follow the PVC cement manufacturer's recommendations and instructions. Avoid
excess cement in fi tting joints to prevent port obstruction.
SAFETY INSTRUCTIONS
1. Do not remove from pressurized lines.
2. Never install sensor without O-Rings.
3. Confirm chemical compatibility before use.
4. Do not exceed maximum temperature/
pressure specifications.
5. Do not install/service without following mounting procedure.
6. Wear safety goggles and faceshield during installation/service.
7. Do not alter product construction.
8. Failure to follow safety instructions could result in severe
personal injury.
Page 2
2.2 IR/Butt Fusion Sensors
• Available in PVDF or PP. A George Fischer IR weld or Butt
Fusion Joining Machine is required to install the end connectors onto pipeline. Refer to the IR weld or butt fusion joining
machine manual for installation details.
IR/Butt Fusion
Connector Kit
+GF+
XX DN XX X
XX
2.3 BCF/IR Sensors
• A George Fischer SYGEF HP BCF/IR Fusion Joining Machine
is required to install the end connections. Refer to the SYGEF
BCF/IR fusion joining machine manual for installation details.
SAFETY INSTRUCTIONS
1. Do not remove from pressurized lines.
2. Never install sensor without O-Rings.
3. Confirm chemical compatibility before use.
4. Do not exceed maximum temperature/pressure
specifications.
5. Do not install/service without following mounting procedure.
6. Wear safety goggles and faceshield during installation/service.
7. Do not alter product construction.
8. Failure to follow safety instructions could result in severe personal injury.
3. Wiring Preparation
Pipe
Union nut
Pipe
Union
nut
BCF/IR
Connector
End
Connector
End
O-Ring
O-Ring,
white
NOTE:
Union Connectors are sold
separately (except for HP
- High Purity.)
Flow
+GF+
XX DN XX X
XX
Flow
O-Ring
O-Ring,
white
The vortex sensor's cap base is reversible for either upstream or downstream conduit port orientation. Optional: Refer to steps (A to
F) for conduit port reversal instructions. Required: Refer to steps (A to G) for external wiring requirements.
A
+GF+
XX DN XX X
XX
Flow
Conduit port
downstream
B
1. Locking
Ring
2. Screw
Mounting base
(top)
Turn Conduit Base 1/2
C
turn to the left and lift
+GF+
XX DN XX X
XX
D
Twist Conduit Base
1/2 turn to the right
Conduit
port
+GF+
XX DN XX X
XX
change
E
Conduit
upstream
Flow
+GF+
XX DN XX X
XX
1. Insert locking ring
2. Install screw
F
G
Threaded conduit (customer supplied) OR
Watertight connector (customer supplied)
Loop cable
downward to prevent
moisture seepage
into housing
14-22
AWG.
100-150 mm
+GF+
XX DN XX X
XX
4-6 in.
PG 13.5 or 1/2 in. NPT-conduit port
2Signet 7000/7001 Vortex Flow Sensors
Page 3
4. Wiring Options - Frequency Output Models
The open-collector frequency output requires a threewire connection between the sensor and the monitoring
device.
To wire the vortex sensor frequency output to remote
equipment:
• Cable with single twisted-pair plus shield recommend-
4-20 mA &
FREQ. OUT
W
BLACK
RED
HITE
+
F
R
E
Q
O
U
T
O
N
L
Y
ed.
• Maximum cable length 200 ft.
• Install cable through a conduit port and connect as
shown to the terminal block inside the vortex sensor
cap.
• Open collector voltage is supplied by Signet instruments.
• Use the 2535/2536 input card setting when wiring to the Signet 9010 Intelek-Pro Flow Controller
To wire the vortex sensor frequency output to a Signet 8550
Integral transmitter:
• Disconnect the sensor wires completely from the vortex sensor
cap. The cap will not be used.
• Connect the Vortex sensor to the 8550 as shown.
White Ground (frequency out)
Loop - (current output)
Red Open Collector pulse (for frequency output)
Not used for current output
Black +3.5-24 VDC +DC Voltage
-
Ground (for frequency out)
Loop - (for current output)
+
+3.5-24 VDC +DC Voltage
FREQ OUT ONLY
Open Collector pulse (for frequency output)
Not used for current output systems
Out to
remote equipment
Sensr Gnd
9
(SHIELD)
Sensr IN
8
(RED)
Sensr V+
7
(BLACK)
Signet 8550 Integral fl ow transmitter
+GF+
XX DN XX X
XX
5. Calibration - Frequency Output Models
This sensor model provides an open-collector frequency output directly proportional to the fl ow rate. The frequency output is held at
0 Hz. When the fl ow rate is below the minimum operating range (see specs.). The following K-factors represent the number of pulses
generated by the sensor for each engineering unit of water measured. If fl uids other than water are used, then custom calibration is
required.
1 U.S. gallon = 0.003785 cubic meters
1 U.S. gallon = 0.0000003069 acre feet
1 U.S. gallon = 8.3454 pounds of water
1 U.S. gallon = 3.785 liters
1 U.S. gallon = 0.8327 imperial gallons
3Signet 7000/7001 Vortex Flow Sensors
Page 4
6. Wiring Options - Current Output Models
4-20 mA &
FREQ. OUT
WHITE
BLACK
+
Q
E
R
F
T
U
O
Y
L
N
RED
O
4 to 20 mA
PLC
• PLC without an internal trans-
mitter power supply
• PLC with a 4 to 20 mA indicator
4-20 mA &
FREQ. O
WHITE
BLACK
24*
VDC
4 to 20 mA
CH +
CH (gnd)
-
250Ω*
-
+
+GF+
XX DN XX X
XX
UT
RED
+
Q
E
R
F
T
U
O
LY
N
O
Fuse**
1/8A
External
power
supply
+
indicator
CH +
CH (gnd)
-
+GF+
XX DN XX X
-
+
Fuse**
1/8A
XX
External
power
supply
VDC
+
24*
4-20 mA &
UT
FREQ. O
WHITE
BLACK
RED
+
Q
E
R
F
T
U
O
Y
L
N
O
1 to 5 VDC
recorder
• PLC with a 1 to 5 VDC chart
recorder
-
+
External
power
supply
+GF+
XX DN XX X
XX
Fuse**
1/8A
* Refer to the maximum Loop Impedance for minimum operating voltage requirements in the Specifi cations section.
** 1/8 Amp. fuse recommended (customer supplied)
4Signet 7000/7001 Vortex Flow Sensors
+
24*
VDC
-
CH +
CH -
250Ω*
(gnd)
Page 5
7. Calibration - Current Output Models
A
This sensor model outputs a 4 to 20 mA current signal directly proportional to the fl ow rate. The current output is held at 4 mA when
fl ow is less than the minimum velocity specifi cation, and increases to 20 mA at the maximum fl ow velocity specifi cation, see section 8.
Use the following formula to calculate the expected current output level at a specifi c fl ow velocity.
Fluid Velocity in pipe
Max sensor velocity (section 8)
X 16
+ 4
= Expected current
output (mA)
Example: In a pipe with a fl ow velocity of 2 m/s, the expected cur-
rent output is calculated as 12.0 mA.
2 (m/s)
4 (m/s)
X 16
+ 4
= 12.0 m
7.1 Velocity to Rate or Rate to Velocity Conversion Formulas
A. Metric Conversion FormulasV = fl owrate
EXAMPLES:
lpm to m/s:PVDF, sensor d63 with a known fl owrate V = 200 lpm (id = 55 from table below);
v(m/s) = 200 / (552 * 0.0471) = 1.40
m/s to lpm:
(optional)
B. American Conversion FormulasV = fl owrate
EXAMPLES:
gpm to ft/s:PVDF, sensor d63 with a known fl owrate V = 100 gpm (id = 55 from table below);
PVC sensor, d32 with a known fl ow velocity v = 2 m/s (id = 26 from table below);
V(lpm) = 2 * 262 * 0.0471= 63.68
v(ft/s) = 100 / (552 * 0.0038) = 8.7
PVC sensor, d32 with a known fl ow velocity v = 10 ft/s (id = 26 from table below);
V(gpm) = 10 * 262 * 0.0038 = 25.69
v (m/s) V (lpm)v (m/s) V (lpm)v (ft/s) V (gpm)v (ft/s) V (gpm)
v = known fl ow
velocity
v = known fl ow velocity
Metric Conversion DataAmerican Conversion Data
Min Flow Max Flow Min Flow Max Flow
Scale the receiving devices such that 4 mA = zero flow and 20 mA
= full scale (max flow)
Jumps above 4 mA
up to minimum flow
reading
0
OPERATIONAL SCENARIO: At low flow (below minimum flow
rate for this sensor), sensor output is 4 mA. The instant the flow
rate exceeds the minimum, the output jumps to reflect the min.
measurable flow rate. At max. flow rate, output peaks at 20 mA.
V (lpm) to v (m/s)
v = V / (id2 * 0.0471)
V (gpm) to v (ft/s)
2
v = V / (id
* 0.0038)
Loop Range: GPM
00.000 -> 100.00
Minimum
Flow Rate
< min flow
= 4mA
(clamped at 4mA
until min. flow rate)
Flow Rate
Optional:
v (m/s) to V (lpm)
V = v * id2 * 0.0471
Optional:
v (ft/s) to V (gpm)
V = v * id2 * 0.0038
Maximum
Flow Rate
(saturates
at 20 mA)
max. flow
(100 gpm in
this example)
20 mA
Current Output
in milliAmps (mA)
4 mA
5Signet 7000/7001 Vortex Flow Sensors
Page 6
8. Specifi cations
8
p
Backpressure Calculation
• Minimum downstream pipe backpressure levels (full
pipes) are required to prevent cavitation within the
sensor. The minimum backpressure is calculated
by the following formula: 2.7 x ∆P + 1.3 x Po (∆P =
Pressure drop across sensor. Po = Water saturation
vapor pressure at operating temperature.)
1. Using Pressure Drop Graph, fi nd ∆P by locating your
maximum fl ow rate on specifi c sensor size line.
2. Using the Water Saturation Vapor Pressures Chart,
fi nd Po at operating temperature.
3. Calculate minimum back pressure needed using
formula.
conduit base
(enclosure box)
3 3/4"
Ring
Seal
Dimensions of
Adapter & Liquid
Tight Connector
as Mounted
Center
line
Adapter
NPT to
PG 13.5
Kit,Adapter, NPT to PG 13.5
3-0000.393
159.000.618
PG 13.5
Liquid
tight
Conn.
Technical Data
Wetted materials:
• Sensor: PVC, PP, PVDF, or SYGEF HP PVDF
• Union O-Rings: FPM or EPDM
Pipe size range:
• PP/PVDF, Metric: d20 to 63 mm, DN15 to 50 mm
• PVC, SCH 80: 0.5 to 2.0 in.
Flow range:
• d20 to d25 (0.5 to 0.75 in.) sensors: 0.5 to 4 m/s (1.6 to 13 ft/s)
• d32 to d40 (1.0 to 1.25 in.) sensors: 0.4 to 4 m/s (1.3 to 13 ft/s)
• d50 to d63 (1.5 to 2.0 in.) sensors: 0.3 to 4 m/s (1.0 to 13 ft/s)
NOTE: Below these velocity ranges, Vortex output is non-linear.
Enclosure:
• Rating: NEMA 4X/IP65
• Material: PC/PBT blend of resins
• Seals (2): Buna-N
Electrical:
• Accuracy: ±1% of reading @ 25°C
• Repeatability: ±0.5% of reading @ 25°C
• Immunity: EN50082-2
• Emissions: EN55011
• Reverse polarity protection
Electrical - Frequency Output Model
• Power: 3.5 to 24 VDC, regulated, 1.5 mA max
• Output type: Open-collector NPN transistor,
10 mA max sink,
24 VDC max pull-up voltage, 0 to 300 Hz (size dependent), 50% duty cycle, non-isolated
Electrical - Current Output Model
• Power: 10 to 27 VDC, regulated, 20 mA max
Pressure Drop Graph
14.5
1.45
0.145
si bar
1.00
P)
∆
0.10
Pressure Drop (
0.01
gpm
1101001000
lpm
3.78
Sensor size:
d20d25 d32 d40
37.8
d50d63
Medium: W ater
@ 20 °C (68 °F)
Flo w Ra te (V)
37837855
Water Saturation Vapor Pressures at Operation Temperatures
• To select a replacement sensor:
a) determine if your sensor has a pulse (frequency) or
current output;
b) determine material type and confi guration;
c) determine size.
OUTPUT
0 Frequency Output
1 Current Output (4 to 20 mA)
+GF+
XX DN XX X
+GF+
XX
XX DN XX X
XX
IndustrialHigh Purity (HP)
-
3
11. End Connectors Ordering Tree
3-0 .
7
0
o-
0
MAT'L./CONFIG.
SYGEF HP-PVDF BCF/IR
*
Butt Fusion True
1
(end connectors included)
SYGEF HP-PVDF BCF/IR
*
Socket Fusion True
2
(end connectors included)
3
PVDF
4
PP
PVC Sch 80
5
Solvent Socket
PVC Metric
6
Solvent Socket
End connector kit options for these sensors
are ordered separately. Use selection tree
below to determine part number
70
0391-
Union
Union
m
m
s
SIZE
d DN Å inches
1 20mm 15mm 1/2
2 25mm 20mm 3/4
3 32mm 25mm 1
4 40mm 32mm 1 1/4
5 50
6 63
*SYGEF¨ HP is the George Fischer
High Purity PVDF formulation and process.
mm
40mm 1 1/2
mm
50mm 2
s
MAT'L./CONFIG.
1
PVDF Metric, Butt Fusion
2
PVDF Metric, Fusion Socket
3
PP Metric, Butt Fusion
4
PP Metric, Fusion Socket
PVC Sch 80
5
PVC Metric
6
10Signet 7000/7001 Vortex Flow Sensors
1 d20 1/2"
2 d25 3/4"
3 d32 1"
4 d40 1 1/4"
5 d50 1 1/2"
6 d63 2"
SIZE
Page 11
12. Sensor Assembly Part Numbers
ElectricalMaterials/Confi gurationSize (mm) ≈Size (in.)Mfr. Part No.Code
George Fischer Signet, Inc. 3401 Aerojet Avenue, El Monte, CA 91731-2882 U.S.A. • Tel. (626) 571-2770 • Fax (626) 573-2057
For Worldwide Sales and Service, visit our website: www.gfsignet.com • Or call (in the U.S.): (800) 854-4090