Sharing information media about flow meter, including type, brand, working principles, and how to operate and setting the flow meter
Rabu, 04 Maret 2015
SEAMETRICS MJ SERIES - TURBINE FLOW METER
Designed for metering pump pacing or water treatment control
Hot or cold water models
Rugged epoxy-coated bronze bodies with union ends
Mechanical register
Reed switch (MJR) or Hall-effect (MJE) output
100:1 turndown
Wide range of field-changeable pulse rates
True dry-top construction
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 feld.
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.
FEATURES
• Dry top multi-jet design
• Tolerates low quality water
• Simple pulse output
• Cold or hot water models
APPLICATIONS
• Cooling tower chemical control
• Industrial water treatment
• Deduct metering
Kembali ke halaman sebelumnya
http://wmaflow.com/seametrics/mj.html
Langganan:
Posting Komentar (Atom)
Tidak ada komentar:
Posting Komentar