Signet 2540 Paddlewheel Flow Sensor

Wiratama Mitra Abadi 01 02.02 flow measurement,

Signet 2540 Paddlewheel Flow Sensor offers the strength and corrosion resistance of stainless steel for liquid applications with low velocity measurements. Unique internal circuitry eliminates the need for magnets in the process fluid, enabling flow measurement of 0.1 to 6 m/s (0.3 to 20 ft/s) while maintaining the advantages of insertion sensor design. Ultraflon 500C bearings and Tungsten Carbide pin provide exceptional wear resistance.

The Signet 2540 offers field replaceable electronics and transient voltage suppression (TVS) to provide greater immunity to large voltage disturbances (i.e. lightning) sometimes encountered in field wiring. Sensors can be installed in DN40 to DN600 (1½ to 24 in.) pipes using the 1½ in. or ISO 7/1-R 1.5 threaded process connection.

The sensors are also offered in a hot-tap configuration with a bleed valve service without process shutdown in pipes up to DN900 (36 in.). Both styles of sensors must be used in full pipes and can be used in low pressure systems.

Signet 2540 Paddlewheel Flow Sensor Features

Operating range 0.1 to 6 m/s (0.3 to 20 ft/s)
Field replaceable electronics
Non-magnetic RF detection
Standard NPT or ISO process connections
Hot-tap versions for installation/service without system shutdown
For pipe sizes up to DN900 (36 in.)
Adjustable sensor - one size for entire pipe range
7.6 m (25 ft) cable

Applications

HVAC
Turf Irrigation
Cooling Systems
Filtration Systems
Water Distribution
Leak Detection
Pump Protection
Clarifi ed Effl uent Totalization
Ground Water Remediation
Gravity Feed Line

Signet 2540 Paddlewheel Flow Sensor Specifications

General
Operating Range	0.1 to 6 m/s	0.3 to 20 ft/s
Pipe Size Range	Standard Version	DN40 to DN600		1½ to 24 in.
	Hot-Tap Version	DN40 to DN900		1½ to 36 in.
Sensor Fitting Options	1½ in. NPT threads	ISO 7/1-R 1.5 threads
Linearity	±1% of full range
Repeatability	±0.5% of full range
Min. Reynolds Number Required	4500
Wetted Materials
Body	316 stainless steel (1.4401)
Fitting	316 stainless steel (1.4401)
Fitting O-rings	FKM, optional EPR (EPDM)
Rotor	17-4PH-1 Stainless Steel
Rotor Pin	Tungsten Carbide GRP 1 (standard) stainless steel (optional)
Retainers (2)	316 stainless steel (1.4401)
Rotor Bearings (2)	Carbon fi ber reinforced PTFE
Electrical
Frequency	49 Hz per m/s nominal		15 Hz per ft/s nominal
Power	5 to 24 VDC ±10%, regulated, 1.5 mA max.
Output Type	Open collector, sinking, max 10.0 mA
Cable Length	7.6 m (25 ft), can be extended up to 305 m (1,000 ft)
Cable Type	2-conductor twisted-pair with shield, 22 AWG
Max. Temperature/Pressure Rating
Sensor with standard FKM sensor fi tting O-rings	17 bar @ 82 °C	250 psi @ 180 °F
Sensor with optional EPR (EPDM) sensor fi tting O-rings	17 bar @ 100 °C	250 psi @ 212 °F
Operating Temperature	-18 °C to 100 °C	0 °F to 212 °F
Shipping Weight
	3-2540-1/-2/-1S/-2S	1.79 kg		3.9 lb
	3-2540-3/-4/-3S/-4S	2.15 kg		4.7 lb
Standards and Approvals
	CE, FCC
	RoHS compliant, China RoHS
	Manufactured under ISO 9001 for Quality and ISO 14001 for Environmental Management and OHSAS 18001 for Occupational Health and Safety