Seametrics MJ Series Multi Jet Meter

MJ-Series meters use the multi-jet principle, which has been an internationally-accepted standard for many years. This type of meter is known for its wide range, simplicity, and accuracy in low-quality water.

Description

MJ-Series meters use the multi-jet principle, which has been an internationally-accepted standard for many years. This type of meter is known for its wide range, simplicity, and accuracy in low-quality water. Seametrics offers cold or hot water models. The impeller is centered in a ring of jets, with inlet jets on one level and outlet jets on another. A gear train drives the register totalizer dials. For pulse output, one of the pointers is replaced by a magnet, which is detected by an encapsulated sensor attached to the outside of the lens. Pulse rate is determined by the dial on which the magnet is placed, and by the number of sensors (single or double).

Changing the pulse rate requires no special tools and can be done in the field. Mechanically, all MJ-Series meters are the same. The difference among *MJE/ MJHE, *MJR/MJHR and *MJT/MJHT meters is in the sensor. MJE/MJHE meters use a solid-state, long-lasting Hall-effect sensor, which requires power. It is
suited for use with Seametrics controls and metering pumps (LMI for instance) that have sensor power. MJR/MJHR meters use a two-wire reed switch. They provide a dry contact closure and do not require power. MJT/MJHT meters totalize only and do not have a sensor.

*Note on Nomenclature: Meter names that include “H” are hot water models. Without the “H” = cold water models

Brand

Seametrics

Seametrics

Seametrics, a member of the TASI Flow Group, is a designer and manufacturer of a variety of flow metering and submersible sensor products. Since 1990, we have provided innovative solutions to users in irrigation, fracking, water & wastewater, environmental, and processing applications. Our products have a reputation for durability and accuracy at a competitive price and are sold through our network of domestic and international distributors.

Located just south of Seattle, our Kent, WA factory is home to both our engineering and production groups. We employ just-in-time manufacturing methods and have a high commitment to continuous improvement as demonstrated by our ISO 9001 quality management system. Our focus on innovation, product value and customer accessibility has resulted in over two decades of continuous growth. Seametrics is dedicated to helping conserve the world’s most valuable resource by providing our customers with precision flow meter and environmental sensor products.

Feature

  • Dry top multi-jet design
  • Tolerates low quality water
  • Simple pulse output
  • Cold or hot water models

Application

  • Cooling tower chemical control
  • Industrial water treatment
  • Deduct metering
  • Pump Pacing

Specification

Model MJE / MJHE MJR / MJH MJT / MJHT
Power 6 mA at 12 Vdc
Temperature Coldwater 105 ̊ F (40 ̊ C) max
Hot Water 194 ̊ F (90 ̊ C) max
Pressure 150 psi operating (10.3 Bar)
Materials Body MJ Cast bronze, epoxy powder coated inside and out
Internals Engineered thermoplastic
Magnet Alnico
Accuracy ±1.5% of reading
Pulse Output Sensor Hall-effect device Reed switch Totalizer only
Max Current 20 mA+ 20mA n/a
Max Voltage 24 Vdc 24 Vdc or Vac n/a
Cable Length 12’ (4 m) standard (2000’ maximum run)

Flow Range

Flow Rates (GPM) ¾” 1″ 1-½” 2″
Minimum 0.22 0.44 0.88 1.98
Maximum 22 52 88 132

Additional Information

Datasheet: Seametrics MJ MJH Datasheet

Manual Instruction: Seametrics MJ MJH Instruction Manual

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