Signet 2551 Magmeter Flow Sensor - Flow Meter Indonesia - Flow meter air, flowmeter solar, gas, Ultrasonic, Vortex, Electromagnetic


Senin, 14 Maret 2022

Signet 2551 Magmeter Flow Sensor

Signet 2551 Magmeter is an insertion style magnetic flow sensor that features no moving parts. The patented* sensor design is available in corrosion-resistant materials to provide long-term reliability with minimal maintenance costs. Material options include PP with stainless steel, PVDF with Hastelloy-C, or PVDF with Titanium.
Signet 2551 Magmeter Flow Sensor

Utilizing the comprehensive line of Signet installation fittings, sensor alignment and insertion depth is automatic. These versatile, simple-to-install sensors deliver accurate flow measurement over a wide dynamic range in pipe sizes ranging from DN15 to DN900 (½ to 36 in.), satisfying the requirements of many diverse applications.

Signet 2551 Magmeters offer many output options of frequency/digital (S3L) or 4 to 20 mA which are available on both the blind and display versions. The frequency or digital (S3L) sensor output can be used with Signet’s extensive line of flow instruments while the 4 to 20 mA output can be used for a direct input to PLCs, chart recorders, etc.

Both the 4 to 20 mA output and digital (S3L) sensor interface is available for long distance signal transmission. An additional benefit is the empty pipe detection which features a zero flow output when the sensors are not completely wetted. Also, the frequency output is bi-directional while the 4 to 20 mA output can be set for uni- or bi-directional flow using the display or the 3-0252 Configuration Tool which connects to PCs for programming capabilities.

In addition, the display version of the 2551 Magmeter is available with relays and features permanent and resettable totalizer values, which can be stored and seen on the display. The display also contains multi-languages in English, Spanish, German, French, Italian and Portuguese menu options.

Signet 2551 Magmeter Features

  • Test certificate included for -X0, -X1
  • Patented Magmeter technology*
  • No moving parts
  • Bi-directional flow
  • Empty pipe detection
  • Installs into pipe sizes DN15 to DN900 (0.5 to 36 in.)
  • Operating range 0.05 to 10 m/s (0.15 to 33 ft/s)
  • Accurate measurement even in dirty liquids
  • Polypropylene and PVDF retaining nuts standard, Valox optional
  • 4 to 20 mA, digital (S3L), frequency, relay output (Display only)
  • No pressure drop
  • Corrosion resistant materials; PP or PVDF with SS, Hastelloy-C, or Titanium
  • Multi-language display menu available


  • Chemical Processing
  • Water and Wastewater Monitoring
  • Metal Recovery and Landfi ll Leachate
  • Commercial Pools, Spas, and Aquariums
  • HVAC
  • Irrigation
  • Scrubber Control
  • Neutralization Systems
  • Industrial Water Distribution

Signet 2551 Magmeter Specifications

Operating Range0.05 to 10 m/s0.15 to 33 ft/s
Pipe Size RangeDN15 to DN900½ to 36 in.
Linearity± 1% reading plus 0.1% of full scale
Repeatability±0.5% of reading @ 25 °C (77 °F)
Minimum ConductivityμS/cm

Wetted Materials
Sensor Body/Electrodes and Grounding Ring-P0, -P1, -P2: PP/316L SS
-T0, -T1, -T2: PVDF/Titanium
-V0, -V1, -V2: PVDF/Hastelloy-C
O-ringsFKM (standard),
EPR (EPDM), FFKM (optional)
Display WindowPolyamide (transparent nylon)
Protection RatingNEMA 4X/IP65

Power Requirements4 to 20 mAVDC ±10%, regulated, 22.1 mA max.
 Frequencyto 24 VDC ±10%, regulated, 15 mA max.
Digital (S3L)to 6.5 VDC, 15 mA max.
Auxiliary (only required for units with relays)to 24 VDC, 0.4 A max.
Reverse Polarity and Short Circuit Protected
Current Output 4 to 20 mALoop Accuracy32 μA max. error (25 °C @ 24 VDC)
 IsolationLow voltage < 48 VAC/DC from electrodes and auxiliary power
Maximum Cable300 m (1000 ft)
Error condition22.1 mA
Max. Loop Resistance300 Ω
Compatible with PLC, PC or similar equipment
4 to 20 mA load needed
Frequency OutputOutput ModesFreq., or Mirror Relay (display version only)
 Max. Pull-up Voltage30 VDC
Max. Current Sink50 mA, current limited
Maximum Cable300 m (1000 ft)
Compatible with Signet Model 8900, 9900, 9900-1BC, 9950
Digital (S3L) OutputSerial ASCII, TTL level 9600 bps
 Compatible with Model Signet 8900, 9900, 9950 and 0486

Relay Specifications
#1, #2 TypeMechanical SPDT
Rating5 A @ 30 VDC max., 5 A @ 250 VDC max.
#3 TypeSolid State
Rating50 mA @ 30 VDC, 50 mA @ 42 VAC
HysteresisUser adjustable for exiting alarm condition
Alarm On Trigger DelayAdjustable (0 to 9999.9 sec.)
Relay ModesOff , Low, High, Window, and Proportional Pulse
Relay SourceFlow Rate, Resettable Totalizer
Error ConditionSelectable; Fail Open or Closed

Characters2 x 16
ContrastUser-set in four levels
Backlighting (only on relay versions)Requires external 9-24 VDC, 0.4 mA max.

Max. Temperature/Pressure Rating
Storage Temperature-20 °C  to 70 °C
Relative Humidity0 to 95% (non-condensing)
Operating TemperatureAmbient-10 °C to 70 °C
Media0 °C to 85 °C
Maximum Operating Pressure10.3 bar @ 25 °C
1.4 bar @ 85 °C

Shipping Weight
 0.680 kg1.50 lb

Standards and Approvals
 CE, FCC, UL, CUL, NSF (3-2551-PX-XX version only)
RoHS compliant, China RoHS
NEMA 4X / IP65 Enclosure (with cap installed)
Manufactured under ISO 9001 for Quality and ISO 14001 for Environmental Management and OHSAS 18001 for Occupational Health and Safety

Download Datasheet: Signet 2551 Magmeter Flow Sensor

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