The GF Signet 2551 Magmeter measures the flow rate in a full pipe by monitoring the voltage produced when the (conductive) fluid moves through a magnetic field. The GF signet flow meter 2551 offers three GF Signet flow instrumentation output options using a frequency or digital (S³L) sensor output. The 4-20mA output can be used for direct input to PLCs, chart recorders, etc. The 4-20mA output and digital (S³L) sensor interface are available for long-distance signal transmission of up to 1,000 ft. The GF Signet 2551 with a built-in display can be used for permanent and resettable totals. The display contains multiple languages with English, Spanish, German, French, Italian, and Portuguese menu options.
Features of GF Signet 2551 Magmeter Flow Sensor
- Sensor Body – Polypropylene and 316L SS
- 4 to 20 mA output
- Installs into pipe sizes DN15 to DN100 (1/2″ to 4″)
- Patented Magmeter technology
- No moving parts
- Bi-directional flow
- Empty pipe detection
- Operating range: 0.05 to 10 m/s (0.15 to 33 ft/s)
- Accurate measurement even in dirty liquids
- Polypropylene or PVDF retaining nuts
- No pressure drop
- Corrosion-resistant materials; PP or PVDF with SS, Hastelloy-C, or Titanium
- Multi-language display menu available
Standards:
- CE
- UL
- CUL
- FCC
- RoHS compliant
- China RoHS
- NSF (3-2551-PX-XX version only)
Specification of GF Signet 2551 Magmeter Flow Sensor
| General | |||
| Operating Range | 0.05 to 10 m/s | 0.15 to 33 ft/s | |
| Pipe Size Range | DN15 to DN900 | ½ in. to 36 in. | |
| Linearity | ± 1% reading plus 0.1% of full scale | ||
| Repeatability | ±0.5% of reading @ 25 °C (77 °F) | ||
| Minimum Conductivity | 20 μS/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-rings | FPM (standard) EPR (EPDM), FFPM (optional) |
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| Case | PBT | ||
| Display Window | Polyamide (transparent nylon) | ||
| Protection Rating | NEMA 4X/IP65 | ||
| Electrical | |||
| Power Requirements | 4 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. | ||
| Reverse Polarity and Short Circuit Protected | |||
| Current Output 4 to 20 mA | Loop 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 Output | Output Modes | Freq., 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) Output | Serial ASCII, TTL level 9600 bps | ||
| Compatible with Model Signet 8900 controller | |||
| Relay Specifications | |||
| #1, #2 Type | Mechanical SPDT | ||
| Rating | 5 A @ 30 VDC max., 5 A @ 250 VDC max. | ||
| #3 Type | Solid State | ||
| 50 mA @ 30 VDC, 50 mA @ 42 VAC | |||
| Hysteresis | User adjustable for exiting alarm condition | ||
| Alarm On Trigger Delay | Adjustable (0 to 9999.9 sec.) | ||
| Relay Modes | Off , Low, High, Window, and Proportional Pulse | ||
| Relay Source | Flow Rate, Resettable Totalizer | ||
| Error Condition | Selectable; Fail Open or Closed | ||
| Display | |||
| Characters | 2 x 16 | ||
| Contrast | User-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 Humidity | 0 to 95% (non-condensing) | ||
| Operating Temperature | Ambient | -10 °C to 70 °C | 14 °F to 158 °F |
| Media | 0 °C to 85 °C | 32 °F to 185 °F | |
| Maximum Operating Pressure | 10.3 bar @ 25 °C | 150 psi @ 77 °F | |
| 1.4 bar @ 85 °C | 20 psi @ 185 °F | ||
| Shipping Weight | |||
| 0.680 kg | 1.50 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 ISO 14001 for Environmental Management and OHSAS 18001 for Occupational Health and Safety | |||
Application of GF Signet 2551 Magmeter Flow Sensor
- Chemical processing
- Water and wastewater monitoring
- Metal recovery and landfill leachate
- Commercial pools, spas, and aquariums
- HVAC
- Scrubber control
- Neutralization systems
- Industrial water distribution
