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.
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| 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
Applications
- 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
| General | ||
| Operating Range | 0.05 to 10 m/s | 0.15 to 33 ft/s |
| Pipe Size Range | DN15 to DN900 | ½ to 36 in. |
| Linearity | ± 1% reading plus 0.1% of full scale | |
| Repeatability | ±0.5% of reading @ 25 °C (77 °F) | |
| Minimum Conductivity | 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 | FKM (standard), | |
| EPR (EPDM), FFKM (optional) | ||
| Case | PBT | |
| Display Window | Polyamide (transparent nylon) | |
| Protection Rating | NEMA 4X/IP65 | |
Electrical | ||
| Power Requirements | 4 to 20 mA | VDC ±10%, regulated, 22.1 mA max. |
| Frequency | to 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 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 8900, 9900, 9900-1BC, 9950 | ||
| Digital (S3L) Output | Serial ASCII, TTL level 9600 bps | |
| Compatible with Model Signet 8900, 9900, 9950 and 0486 | ||
Relay Specifications | ||
| #1, #2 Type | Mechanical SPDT | |
| Rating | 5 A @ 30 VDC max., 5 A @ 250 VDC max. | |
| #3 Type | Solid State | |
| Rating | 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 | |
| Relative Humidity | 0 to 95% (non-condensing) | |
| Operating Temperature | Ambient | -10 °C to 70 °C |
| Media | 0 °C to 85 °C | |
| Maximum Operating Pressure | 10.3 bar @ 25 °C | |
| 1.4 bar @ 85 °C | ||
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 and ISO 14001 for Environmental Management and OHSAS 18001 for Occupational Health and Safety | ||
Download Datasheet: Signet 2551 Magmeter Flow Sensor
Reference : gfps.com
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