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Process Control Instrumentation, Field Devices and Industrial Automation

GF SIGNET  3-2551-P0-12

GF SIGNET 3-2551-P0-12 (1)

GF Signet 2551 Magmeter Flow Sensor (insertion style magnetic). DN15 to DN200. Corrosion Resistant. 4-20mA, digital, frequency and relay (display version) outputs. Polypropylene and 316L SS body. Bidirectional flow. NEMA 4X/IP65. UL Listed.

Part# with Options:        3-2551-P0-12
Price with Options:        Please Email us your request for quote   


(1) Size for GF Signet 2551
(2) Version for GF Signet 2551
(3) Output for GF Signet 2551

Availability In Stock  ]

Standard configurations typically available in In Stock:

The Signet 2551 Magmeter is an insertion style magnetic fl ow 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. Utilizing the comprehensive line of Signet installation fi ttings, sensor alignment and insertion depth is automatic. These versatile, simple-to-install sensors deliver accurate fl ow measurement over a wide dynamic range in pipe sizes ranging from DN15 to DN900 (1⁄2 to 36 inches), satisfying the requirements of many diverse applications.

Signet 2551 Magmeters off er many output options of frequency/digital (S 3 L) or 4 to 20 mA which are available on both the blind and display versions. The frequency or digital (S 3 L) sensor output can be used with Signets extensive line of fl ow 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 (S 3 L) sensor interface is available for long distance signal transmission. An additional benefi t is the empty pipe detection which features a zero fl ow 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 fl ow using the display or the 3-0252 Confi guration 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. Also, the display contains multi-languages with English, Spanish, German, French, Italian and Portuguese menu options.

  • Test certifi cate included for -X0, -X1
  • Patented Magmeter technology*
  • No moving parts
  • Bi-directional fl ow
  • 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 (S 3 L), 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

Operating Range0.05 to 10 m/s (0.15 to 33 ft/s)
Pipe Size RangeDN15 to DN900 (1⁄2 in. to 36 in.)
Linearity 1% reading plus 0.1% of full scale
Repeatability0.5% of reading @ 25 C (77 F)
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-ringsFPM (standard)
EPR (EPDM), FFPM (optional)
Display WindowPolyamide (transparent nylon)
Protection RatingNEMA 4X/IP65
Power Requirements4 to 20 mA: 24 VDC 10%, regulated, 22.1 mA max.
Frequency: 5 to 24 VDC 10%, regulated, 15 mA max.
Digital: (S3L) 5 to 6.5 VDC, 15 mA max.
Auxiliary (only required for units with relays): 9 to 24 VDC, 0.4 A max.
Current Output 4 to 20 mALoop Accuracy: 32 μA max. error (25 C @ 24 VDC)
Isolation: Low voltage < 48 VAC/DC from electrodes and auxiliary power
Maximum Cable: 300 m (1000 ft)
Error condition: 22.1 mA
Max. Loop Resistance: 300 Ω
Compatible with PLC, PC or similar equipment
4 to 20 mA load needed
Frequency OutputOutput Modes: vFreq., or Mirror Relay (display version only)
Max. Pull-up Voltage: 30 VDC
Max. Current Sink: 50 mA, current limited
Maximum Cable: 300 m (1000 ft)
Compatible with Signet Model 8550, 8900, 9900, 9900-1BC
Digital (S3L) OutputSerial ASCII, TTL level 9600 bps
Compatible with Model Signet 8900 controller
Relay Specifications
#1, #2 TypeMechanical SPDT
Rating5A @ 30 VDC max., 5A @ 250 VDC max.
#3 TypeSolid State
50 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 (-4 F to 158 F)
Relative Humidity0 to 95% (non-condensing)
Operating TemperatureAmbient: -10 C to 70 C (14 F to 158 F)
Media: 0 C to 85 C (32 F to 185 F)
Maximum Operating Pressure10.3 bar @ 25 C (150 psi @ 77 F)
1.4 bar @ 85 C (20 psi @ 185 F)
Shipping Weight0.680 kg (1.50 lb)
Standards and ApprovalsCE, 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

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> WEATHERPROOF NEMA-4X IP65 :    9 Items found.

KOBOLD  KSK-1015-G-K10-00

KOBOLD KSK Plastic Flowmeter for Liquids and Gases. Operates on the basis of the variable-area principle. Trogamid-T or Polysulfone tubes. 4% Accuracy. Shock and Corrosion Proof. 145 PSIG Max Pressure. Compact Design. NEMA 4X. IP65.



KOBOLD  S-3101

KOBOLD S Float Type Flow Switch for Water or Air. Compact and Economical Design. 4% Accuracy. Brass or Stainless Steel Construction. NEMA 4X. IP65. cCSAus Approved.




KOBOLD SV Float Type Flowmeter and Flow Switch. With cylindrical control tube and conical groove. GPM (water) or SCFM (air) calibrated. 5% Accuracy. Lightweight and Compact Design. Nickel-Plated Brass or Stainless Steel Process Connections. 145 PSI Max. Pressure. NEMA 4X. IP65. cCSAus Approved.




KOBOLD DPE Turbine Wheel Flow Meter for measurement of liquid flows in pipes up to 3 inches in diameter. 1.5-8 GPM to 15-200 GPM flow ranges. Bronze or stainless steel bodies. Frequency or 4-20 mA output. 580 PSIG max. pressure. SPDT 5 amps relays. NEMA 4X




KOBOLD VKM Viscosity Compensated Flow Switch for Viscous Liquids, Float with orifice, spring-loaded. GPM Scale (oil). 5% Accuracy. Brass or Stainless Steel. 3600/5000 PSI Max. Pressure. NEMA 4X. IP65.




KOBOLD VKM Viscosity Compensated Flow Meter for Viscous Liquids, Float with orifice, spring-loaded. GPM Scale (oil). 5% Accuracy. Brass or Stainless Steel. 3600/5000 PSI Max. Pressure. NEMA 4X. IP65.




KOBOLD VKM Viscosity Compensated Flow Meter and Switch for Viscous Liquids. GPM Scale (oil). 5% Accuracy. Brass or Stainless Steel. 3600/5000 PSI Max. Pressure. NEMA 4X. IP65.




KOBOLD VKM Viscosity Compensated 4-20mA Flow Transmitter for Viscous Liquids, Float with orifice, spring-loaded. GPM Scale (oil). 5% Accuracy. Brass or Stainless Steel. 3600/5000 PSI Max. Pressure. 4-20 mA Output. NEMA 4X. IP65.




KOBOLD VKM Viscosity Compensated Flow Meter for Viscous Liquids, Float with orifice, spring-loaded, with Compact Electronic Display. 5% Accuracy. Brass or Stainless Steel. 3600/5000 PSI Max. Pressure. NEMA 4X. IP65.