2. Specifi cations
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
/
4
in. ports,
1
/
4
in. 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 fl uids 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, 22 AWG
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 fl uid fl ow. Within the given measurement
range, the rotational speed of the rotor is proportional to the
fl uid fl ow 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 fl ow rate. Both opaque and
transparent fl uids 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 fl uids, 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
psi
bar
0
20
40
60
70
80
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!
