3
2551 Blind Magmeter
Quick Start
This manual contains the general installation, wiring and
calibration data for the Signet 2551-XX-11 Magmeter with
Frequency or Digital (S
3
L) data output, and for the Signet
2551-XX-12 Magmeter with 4 to 20 mA output. The basic
steps are outlined on this page. See each referenced section
for detailed information.
1. Confi gure the Hardware
2551-XX-11 ONLY:
Position this Jumper to select
Digital (S
3
L) output or Frequency
output. Pg. 5.
2. Position the PIPE SIZE jumper
according to your pipe
size. Pg. 5.
3. Install the Magmeter
into the pipe.
Use Signet
installation fi ttings ONLY. The installation fi tting is critical
to Magmeter performance. Pg. 4.
4. Connect POWER and OUTPUT wiring.
Frequency out: Pg. 7.
Digital (S
3
L) out: Pg. 7.
4 to 20 mA out: Pg. 6.
GROUNDING
Without a good earth ground,
the Magmeter may not operate
effi ciently. Pg. 6.
5. Route the wiring
out through the two cable ports. Use
appropriate hardware to secure the 2551 from moisture
intrusion. One Liquid Tight Connector is included. Pg. 5.
3.
1
2
3
4
JP2
FREQUENCY OUT
SERIAL (S
L) OUT
3
1.
2551-P0/T0/V0 ½ in. to 2½ in.
DN15 to DN65
3 in. to 4 in.
DN80 to DN100
2551-P1/T1/V1 5 in. to 6 in.
DN125 to DN150
8 in.
DN200
2551-P2/T2/V2 10 in. to 12 in.
DN250 to DN300
Pipe
Size
Jumper
Position
Sensor
Type
2.
4.
5.
Connect output signals and power
to this 4-terminal block.
Specifi cations
General
Pipe size range ...............DN15 to DN 900 (0.5 in. to 36 in.)
Flow Range
Minimum .....................0.05 m/s (0.15 ft/s)
Maximum ....................10 m/s (33 ft/s)
Linearity ..........................± 1% reading plus 0.01 m/s (0.033 ft/s)
Repeatability ...................± 0.5% of reading @ 25 °C (77 °F)
Min. Conductivity ............20 μS/cm
Wetted Materials
Sensor body and Electrodes and Grounding ring
-P0, -P1, -P2 ...............Polypropylene and 316L SS
-T0, -T1, -T2 ................PVDF and Titanium
-V0, -V1,-V2 ................PVDF and Hastelloy-C
O-rings ........................ FKM (standard);
EPDM, FFKM (optional)
The user is responsible for determining the chemical
suitability of these materials for a specifi c application.
Electrical
Power Requirements
4 to 20 mA ......................21.6 to 26.4 VDC, 22.1 mA max.
Frequency.......................5 to 26.4 VDC, 15 mA max.
Digital (S
3
L) .....................5 to 6.5 VDC, 15 mA 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
Max cable .......................300 m (1000 ft)
Error condition ................22.1 mA
Max. Loop Resistance ....300 Ω
Compatible with PLC, PC or similar equipment
Frequency output
Max. Pull-up Voltage.......30 VDC
Compatible with Signet 8900, 9900, 9900-1BC, 9950
Digital (S
3
L) Output
Serial ASCII, TTL level 9600 bps
Compatible with Signet 8900, 9900, 9950 and 0486 Profi bus
Concentrator
Max. cable length .....Application dependent (See 8900 manual)
Environmental Requirements
Enclosure........................NEMA 4X / IP65 (with cap installed)
Case ...............................PBT
Display ............................Polyamide
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)
Standards and Approvals
• CE, UL/CUL
• NSF (3-2551-P versions only)
• RoHS compliant
China RoHS (visit gfsignet.com for details)
• Manufactured under ISO 9001 for Quality, ISO 14001
for Environmental Management and OHSAS 18001 for
Occupational Health and Safety.
Declaration of Conformity according to FCC Part 15
This device complies with Part 15 of the FCC rules.
Operation is subject to the following two conditions:
(1) This device may not cause harmful interference, and,
(2) This device must accept any interference received,
including interference that may cause undesired operation.
