Signet 2507 User manual

2. Specifications
General
Compatibility: Signet 5075 Totalizing Monitor
Signet 5500 Flow Monitor
Signet 5600 Batch Controller
Signet 8550 series Flow Transmitter
Signet 8900 Multi-Parameter Controller
Operating Range:
• -1V sensor: 100 to 2000 mL/m (0.026 to 0.528 U.S. gpm)
(This sensor available in Europe only)
• -2V sensor: 400 to 2800 mL/m (0.105 to 0.740 U.S. gpm)
• -3V sensor: 700 to 4200 mL/m (0.185 to 1.123 U.S. gpm)
• -4V sensor: 1300 to 6000 mL/m (0.343 to 1.585 U.S. gpm)
• -6V sensor: 3200 to 12000 mL/m (0.845 to 3.170 U.S. gpm)
Accuracy: ±2% of reading
Repeatability: ±0.25% of full range
Viscosity range: 0.2 to 20.0 centistokes
Pipe connections: G 1/4in. ports, 1/4in. NPT (male) pipe adapters
(2 included)
Wetted Materials
• Housing: PVDF
• Flow insert: PTFE
• Quad ring seal: FPM
• Rotor: PVDF
• Pipe thread adapters: PVDF
• Suitable for clean fluids only
Electrical
Power: 5 to 24 VDC ±10%, regulated,10 mA max.
Output Type: Open-collector, sinking, 10 mA max.
Cable Length: 7.6m (25 ft), can be extended up to 300 m
(1000 ft)
Cable type: 2-conductor shielded, twisted-pair, 22AWG
SAFETY INSTRUCTIONS
1. Do not remove from pressurized lines.
2. Confirm chemical compatibility before use.
3. Do not exceed maximum temperature/pressure specifications.
4. Wear safety goggles or faceshield during installation/service.
5. Do not alter product construction.
6. Failure to follow safety instructions could result in severe personal injury.
1. Description
The Signet 2507 Mini Flow Sensor contains a free-running rotor
which is driven by the fluid flow. Within the given measurement
range, the rotational speed of the rotor is proportional to the
fluid flow rate. Permanent magnets built into the rotor actuate an
electronic switch in the top of the sensor generating a square-
wave output signal proportional to flow rate. Both opaque and
transparent fluids can be measured from 0.2 to 20.0 centistokes.
Wetted sensor parts are constructed of PVDF and FPM, making
the sensor suitable for use with most process fluids, including
most acids, bases, light oils, and solvents.
Signet 2507 Mini Flow Sensor
FLOW
Cable plug
25 ft cable
Pipe fitting adapter
G
1
/ 4 x
1
/ 4 in. NPT
(2 included)
G
1
/ 4 in.
port threads
Upper body with
electronic switch
Lower body with
built-in rotor
Polar organic solvents (i.e., ketones and chlorinated
hydrocarbons) and aromatic hydrocarbons are not
compatible with this sensor.
Max. Temperature/Pressure Rating
5.5 bar @ -18 °C (80 psi @ 0 °F)• 5.5 bar @ 24 °C (80 psi @ 75 °F)• 3 bar @ 120 °C (45 psi @ 248 °F)•
Pressure Drop Across Sensor vs. Flow Rate
Shipping Weight: 0.115 kg (0.25 lb)
Standards and Approvals
CE• Manufactured under ISO 9001 and ISO 14001• China RoHS (Go to www.gfsignet.com for details)
0
20
40
60
80
100
-40 0 40 80 120 160 200 240 280
°C
-40 -18 4 27 49 71 93 116 138
°F
6.9
5.5
4.
1
2.8
1.4
psibar
02040607080
0.25
0.50
0.75
1.00
1.25
1.50
3.63
7.25
10.88
14.50
18.13
21.76
PSI BAR
Flow rate (%) of full scale
-2V
-3V
-4V
-6V
3-2507.090 Rev. P 02/10 English
*3-2707.090*
English
WARNING!

Signet 2507 Mini Flow Sensor
2
3. Installation
• The sensor may be installed in any position,although
horizontal flow is recommended (the sensor mounted upright).
If the sensor is not installed upright, the linearity error may be
greater in the lower part of the sensor's measurement range.
• Mounting tabs are provided using M4 or #8 self-tapping
screws (customer supplied). See Dimensions illustration for
mounting tab hole pattern specifications.
• Install sensor with the arrow pointing in the direction of flow.
• Always maximize distance between the sensor and pump
source. Never install immediately downstream of valves,
fittings, etc. For optimum performance, a straight flow run of
at least 100 mm to 150 mm (4 to 6 in.) should be provided
before and after the sensor.
• Two pipe fitting adapters (included) convert the G 1/4 in.
straight threads to 1/4 in. NPT pipe threads. Hand tighten
only! Apply 1-2 turns of PTFE sealing tape to all threaded
connections to prevent leaks..
Installation Hints
• Avoid vibrations and shocks.
• Avoid solids in the fluid.
• Install a filter or line strainer upstream to protect sensor.
1
2
Sensor
Ground
(silver wire)
Sensor Power:
5 to 24 VDC
(black wire)
Sensor Signal Output
(Red wire)
Max cable length:
300 m (1000 ft)
Sensor
Plug (side)
Disregard ground
symbol on connector
95 mm
65 mm
FLOW
FLOW
68 mm
4. Wiring Details
Cable Extensions
• 2507 flowmeters distributed in the U.S. include 7.6 m (25 ft)
of cable.
The cable can be extended to 300 m (1000 ft).
• Always maintain cable shield through cable splice.
• 2507 flowmeters distributed in Europe do not include cable.
Refer to the sensor plug connection diagram (at right) for
connection details.
FLOW
100 to 150 mm (4 to 6 in.) 100 to 150 mm (4 to 6 in.)
FLOW
Pipe Fitting
Adapters
(included)
Hand
tighten
only!
Coupling Pipe or
tubing
Mounting
tabs (3)
Sensor Plug Connection Diagram

Signet 2507 Mini Flow Sensor 3
5. Calibration
The K-Factors listed here represent the number of pulses the sensor will generate for each measured engineering unit. They are
listed in Liters and in U.S. gallons for each sensor model.
Sensor
Model Code Flow Insert
K-FACTORS
Pulses per
LITER Pulses per U.S. Gallon
3-2507.100-1V 198 801 731 1 mm 3413 12918
3-2507.100-2V 198 801 732 2 mm 1687 6385
3-2507.100-3V 198 801 733 3 mm 1045 3955
3-2507.100-4V 198 801 734 4 mm 721 2729
3-2507.100-6V 198 801 736 NONE 382 1446
FLOW
Red
Black
Shield
Signet
5500/5600
2507
Freq. IN
Sen. Pwr.
Freq. IN
Iso. Gnd
Open Collector
Sensor
Std. Sensor
Red
Black
Shield
Signet 8550-1
FLOW
2507
Sensr Gnd
(SHIELD)
Sensr IN
(RED)
Sensr V+
(BLACK)
9
8
7
Signet 8900
FLOW
FLOW
2507
Input
Gnd.
10k Ω
+5 to 24
VDC
-
Black
Shield
Red
• Pull-up resistor required (10 kΩ recommended). Consult your instrument manual for
additional information.
Other
instrument
Other Brands
External Power supply
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
+
-
+
-
2507
2507
FLOW
Instrument Connections
Assemble
(counterclockwise)
Disassemble
(clockwise)
Upper body
Lower Body
Assembly
Tabs (3)
FLOW
Inlet port Outlet port
flow
insert
Rotor
Quad ring seal
WARNING!
Do not use tools of any kind on the sensor body or port
connections. Hand tighten only! Excessive force will
damage sensor.
6. Replacing The Flow Insert
Sensor range can be modified by changing the flow insert. The
sensor must be removed from service and disassembled prior to
installing the new flow insert. See Specifications (Section 2) for
flow range data.
Flow Insert Replacement Procedure:
1. Depressurize system and remove sensor.
2. Rotate the upper sensor body clockwise until it releases from
the lower half, then lift off.
3. Remove rotor and quad ring seal from lower body.
4. Push the flow insert outward using a small screwdriver.
5. Install the new flow insert (small diameter inward) with the
eraser end of a pencil. Apply light pressure until insert seats
against the step in the lower body. Do not force!
6. Install rotor into lower body. Spin rotor with finger and check
for free rotation. If rotor hits flow insert, remove rotor and
push insert back until free rotor rotation is established. Use a
rounded object like a pen or pencil body to adjust flow insert
depth.
7. Install rotor, quad ring, and upper body. Hand tighten only!
Do not overtighten upper body or the lower body assembly
tabs will break.
8. Reprogram instrument with new K-Factor, see Calibration
(Section 5).
IMPORTANT!
• K-Factors must be considered as approximate
values.
• The number of pulses per volumetric unit
may vary depending on the medium and the
installation.
• For optimum performance, the system must
be calibrated after installation.

Georg Fischer Signet LLC, 3401 Aerojet Avenue, El Monte, CA 91731-2882 U.S.A. • Tel. [phone] • Fax [phone]
For Worldwide Sales and Service, visit our website: www.gfsignet.com • Or call (in the U.S.): [phone]
For the most up-to-date information, please refer to our website at www.gfsignet.com
3-2507.090 Rev P 02/10 English © Georg Fischer Signet LLC 2010
Mfr. Part No. Code
3-2507.100-1V 198 801 731 (-1V sensor available in Europe only)
3-2507.100-2V 198 801 732
3-2507.100-3V 198 801 733
3-2507.100-4V 198 801 734
3-2507.100-6V 198 801 736
Accessories and Replacement Parts
Mfr. Part No. Code Description
3-2507.080-2 198 801 550 Rotor, 2507
3-2507.080-3 198 801 547 Quad Ring, 2507
3-2507.080-5 198 801 508 DIN Connector, 2507
3-2507.081-1 198 801 548 1 mm Insert (available in Europe only)
3-2507.081-2 198 801 502 2 mm Insert
3-2507.081-3 198 801 503 3 mm Insert
3-2507.081-4 198 801 558 4 mm Insert
5523-0222 159 000 392 Cable (per foot), 2 cond. w/shield, 22 AWG
Ordering Information
Sensor Part Number
3-2507.100 Mini-flow low flow sensor with free-running rotor
Insert option
-1V* With 1 mm insert; for 100 to 2000 mL/m (0.026 to 0.528 gpm)
-2V With 2 mm insert; for 400 to 2800 mL/m (0.15 to 0.740 gpm)
-3V With 3 mm insert, for 700 to 4200 mL/m (0.185 to 1.123 gpm)
-4V With 4 mm insert, for 1300 to 6000 mL/m (0.343 to 1.585 gpm)
-6V With 6 mm inlet, no insert, for 3200 to 12000 mL/m (0.845 to 3.170 gpm)
3-2507.100 -2V Example Part Number *(-1V sensor available in Europe only)