3
Signet 2540 High Performance Flow Sensor
Specifi cations
Note:
Pressure/temperature specifi cations refer to sensor
performance in water. Certain chemical limitations may apply.
Chemical compatibility should be verifi ed.
04/08
manufactured date code = mm/yy
ex. 04/08
04 - month of April
08 - year 2008
General Data
Flow velocity range ............... 0.1 to 6 m/s (0.3 to 20 ft/s)
Linearity ................................ ±1% of full range
Repeatability ......................... ±0.5% of full range
Pipe range:
Standard version .................. 38 to 610 mm (1.5 to 24 in.)
Hot-Tap version .................... 38 to 914 mm (1.5 to 36 in.)
Sensor fi tting options ............ 316 SS with 1.5 in.
NPT threads,
OR
316 SS with
IS0 7-R 1½ threads
Cable length ......................... 7.6 m (25 ft), can splice up to
300 m (1000 ft)
Cable type ............................ 2-conductor twisted-pair with
22 AWG shield
Electrical Data
Supply voltage ...................... 5 to 24 VDC
Supply current ...................... 1.5 mA max.
Output type ........................... Open collector, sinking
Output current....................... 10.0 mA max.
Wetted Materials
Sensor body ......................... 316 stainless steel
Sensor fi tting......................... 316 stainless steel
Sensor fi tting O-rings ............ Standard FKM, optional EPDM
Rotor ..................................... 17-4PH-1 Stainless Steel
Rotor shaft ............................ Tungsten carbide (standard)
316 stainless steel (option)
Shaft retainers (2) ................. 316 stainless steel
Rotor bearings (2)................. Carbon fi ber reinforced PTFE
Quality Standards
Manufactured under ISO 9001 for Quality, ISO 14001
for Environmental Management and OHSAS 18001 for
Occupational Health and Safety.
China RoHS (Go to www.gfsignet.com for details)
This device complies with Part 15 of the FCC rules
Operation is subject to the following two conditions:
1) This device may not cause harmful interference, and,
2) This device must accept any interference
received, including interference that may
cause undesired operation.
Fluid Conditions
Maximum operating pressure/temperature:
Sensor with standard FKM
sensor fi tting O-rings ......... 17 bar (250 psi) @ 82 °C (180 °F)
Sensor with optional EPDM
sensor fi tting O-rings ......... 17 bar (250 psi) @ 100 °C (212 °F)
Sensor Wiring
½ in. NPT conduit port
• Use 2-conductor shielded cable for cable extensions up to
300 m (1000 ft)
• Maintain cable shield through splice.
Black (5 to 24 VDC)
Silver (DC return)
Signet Instruments
Other Brands
Input
Gnd.
10 kΩ
+
5 to 24
VDC
-
black
silver
red
• Pull-up resistor required (10 kΩ recommended).
• Use 2-conductor shielded cable for cable extensions up to
300 m (1000 ft)
• Maintain cable shield through splice.
Other
instrument
Blk, sensor
power
Red, freq.
input
Shld,
Gnd
instrument
Red (signal out)
2540 Hot-Tap sensor specifi cations and limitations
depend on the lowest maximum rating of the
components associated with the system. For
example, if a ball valve in the system is rated at
a maximum 100 psi @ 175 °F, you must limit the
entire system's maximum pressure/temperature
rating to 100 psi @ 175 °F. All higher maximum
specifi cations
MUST
yield to the component with
the lowest maximum specifi cation.
Maximum Operating Pressure/Temperature:
• 17 bar (250 psi) @ 82 °C (180 °F) with
standard FKM sensor fi tting O-rings.
• 17 bar (250 psi) @ 100 °C ( 212 °F)
with optional EPDM sensor fi tting O-rings.
