The iMAG-Series is the most economical flanged electromagnetic flowmeter on the market. With electrodes designed to discourage fouling, it is available in 2” to 12” pipe in municipal or industrial water, waste and reclaimed water, pump stations, and packaged plant applications. Minimal straight pipe requirements allow iMAG-Series meters to be used in piping configurations where there is little space between the meter and an elbow.
iMAG-Series meters are CE certified, certified to NSF/ANSI standard 61 and are rated IP68 for applications where the meter may be operated under water to a depth of at least 10 feet (3 meters) continuously.
The display can be meter mounted or remote, and both rate and total indication are standard. Rate and total units and pulse scaling can be set via the front panel touch key pad by the user. Bidirectional flow reading is standard with totals available in forward, reverse, net flow, batch forward flow, and batch reverse flow. Batch totals can be reset.
The iMAG 4700 is also available in either AC or DC powered versions, with battery backup. Pulse output is standard on all models, while 4-20mA passive current loop is also standard on the iMAG 4700p. 4-20mA loop is optional on the iMAG 4700 and iMAG 4700r externally powered meters and Modbus® protocol outputs are optional on all models although battery life will be reduced if ordered on battery powered units. A power/output cable allows outputs for use with a variety of Seametrics displays and other controls for remote reading and telemetry applications.
Modbus is a registered trademark of Schneider Electric.
Battery Powered Units
Features
- Easy setup
- Minimal straight pipe
- Mounted or remote rate & total
- Tamper-evident seal
- Certified to NSF/ANSI standard 61
- IP68 rated
- No moving parts
Specification iMAG Water Flow Meter
| Pipe Sizes | 2”, 3”, 4”, 6”, 8”, 10”, 12” | ||||||
| Flanges | 150 lb. ANSI Pattern | ||||||
| Pressure | 150 psi (10.3 bar) line pressur | ||||||
| Temperature | Operating | 10 ̊ to 140 ̊ F (-12 ̊ to 60 ̊ C) | |||||
| Storage | -40 ̊ to 158 ̊ F (-40 ̊ to 70 ̊ C) | ||||||
| Accuracy | ±0.75% of reading on iMAG 4700p and 4700r (±1.0% iMAG 4700), ±0.025% of full-scale flow from low flow cutoff to maxi. flow rate of 10 m/sec | ||||||
| Low Flow Cutoff | 0.5% of maximum flow rate | ||||||
| Material | Body (2”-12”) | Welded steel, epoxy-coated | |||||
| Liner (2” & 3” | Polyurethane/Noryl* | ||||||
| Liner (4”-12”) | Santoprene flange/Polypropylene liner body | ||||||
| Electronics Housing | Powder-coated diecast aluminum | ||||||
| Electrodes | 316 stainless steel | ||||||
| Display | Type | 128x64 dot-matrix LCD | |||||
| Digits | 5 Digit Rate | 8 Digit Total | |||||
| Units | Rate Volume Units | Rate Time Units | Total Volume Units | ||||
| Please Note: All iMAG meters are factory set for gallons per minute (GPM) rate and gallons total. If other units are required, they can be set in the field. |
Gallons Liters Barrels(42 gal) Cubic Feet Cubic Meters |
Million Gallons2 Mega Liters2 Imperial Gallons Million Imperial Gallons2 |
Second Minute Hour Day |
Gallons Gallons x 10 Gallons x 100 Gallons x 1000 Million Gallons Liters Kilo Liters Mega Liters |
Barrels (42 gal) Cubic Meters Cubic Meters x 1000 Cubic Feet Cubic Feet x 1000 Second Foot Day Million Cubic Feet |
Acre Feet Acre Inches Imperial Gallons Imperial Gallons x 1000 Million Imperial Gallons Fluid Ounces |
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| Bidirectional | Forward Total, Reverse Total, Net Total, Batch Forward Total, Batch Reverse Total (Batch totals can be reset |
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| Power | DC Power | 9-36 Vdc @ 250 mA max, 30 mA average |
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| Battery Backup (Not for use as primary power) |
DC powered units: One lithium 7.2V ‘D’ size battery pack, replaceable.
AC powered units: One 9V alkaline battery, replaceable. |
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| AC Power | 85-264Vac, 50/60Hz, 0.12A (iMAG 4700r and 4700p only) |
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| Battery | One lithium 7.2V ‘D’ size battery pack, replaceable. (iMAG 4700 only) |
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| Scaled Pulse | Signal | Current sinking pulse, isolated, 36 Vdc at 10 mA max |
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| Pulse Rates | User-scalable from 0.1 to 99,999.9 volume units/pulse. Pulse width is one-half of pulse period with minimum pulse width of 2.5 ms, 200 pulses/sec max. For battery option meters, pulse width varies with frequency, 150 pulses/sec max. |
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| Options | 4-20mA Current Loop | Isolated, passive, 24Vdc, 650 Ω maximum current loop |
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| HART/4-20mA | HART protocol over 4-20mA line (iMAG4700p & iMAG4700r only) |
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| High Speed Digital | Isolated, open collector, 24 Vdc (iMAG4700p only) |
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| Serial Communications I | Isolated, asynchronous serial RS485, Modbus® RTU protocol |
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| Cable | Power/Output Cable | 20ft (6m) standard length polyurethane jacketed cable—for power and outputs (lengths up to 200’ available). |
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| Remote Display Cable | 20ft (6m) standard length polyurethane jacketed cable—for connection between meter and remote display (lengths up to 200’ available). (iMAG 4700r) |
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| Conductivity | >20 microSiemens/cm |
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| Empty Pipe Detection | Hardware/software, conductivity-based |
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| Regulatory | (EN 61326), 2”-12” certified to NSF/ANSI standard 61 60°C (140°F) |
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| Environmental | (EN 61326), 2”-12” certified to NSF/ANSI standard 61 60°C (140°F) |
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Modbus is a registered trademark of Schneider Electric.
* Specifications subject to change. Please consult our website for the most current data (www.seametrics.com).
1 If forward and reverse flow data needs to be sent to another device, either the Digital or Modbus output is required.
2 Rate Time Unit is available in Day only
iMAG Water Meter Accuracy
These magnetic flow Meter can be installed horizontally, vertically (with downward flow), or in any radial position. Using a check valve on the upstream side of the meter, and/or an air vent (vacuum relief valve) in the same, unobstructed run of pipe as the meter, is required in any installation where the meter may be exposed to suction when the system is not in normal operation. Suction can cause damage to the liner. Liner damage caused by suction, without the use of a check valve and/or air vent, may void the warranty.
iMAG 4700 Dimension
iMAG water flow meter straight Pipe Recommendations.
The iMAG magnetic flow meter requires straight pipe before and after the meter for best accuracy. However, the ability of electromagnetic meters to average the flow across the entire pipe allows for shorter straight pipe recommendations than most mechanical meters
Pulse Output Configuration.
A pulse output is standard on all models. Since this is an isolated output, the external equipment must include a DC power source to regenerate the pulse from the open-collector output (transistor equivalent of a contact closure). A pull-up or pull-down resistor may be needed if not included in the user equipment as shown in the diagrams.
Both the power source and resistor may be supplied internally in some types of control and monitoring magnetic flow meter devices. If not, as for most PLC discrete input modules, they must be added externally at the module input terminals. The pulse output rate in volume units/pulse can be set by the user via the SET P tab on the meter’s setup menus.
iMag Flow Rate Table
Battery Powered Units
The iMAG 4700 flow meter can come configured with two replaceable 3.6V lithium ‘D’ batteries. In this configuration, the only option/output is the scaled pulse output which comes standard. The scaled output for the battery powered option has a maximum pulse rate of 150 pulses/second, with a fixed pulse width of 2.5ms. Be sure to set your P value such that the meter will function properly over the flow range in your flow meter application. The sample rate of the meter is user selectable through the SAMP tab in the meter’s sub-menu. Sample periods of 1/5, 1/3, 1, 3, 5, 15, 30, and 60 seconds can be selected. Larger sample periods will yield longer battery life but slower response time. Care must be taken to select a sample period that is suitable for your application. See the table below for the expected battery life as a function of sample period