Electronic Flow Meters - KFL-Z(D-)

1. General Information

1.1 Introduction
KFL-Z(D) series Electronic Flowmeters is a kind of turbine flowmeters. Turbine flowmeters
continue to be the most popular way to measure flow electronically in a wide range of industries. A review of the advantages turbine flowmeters have to offer provides insight into the growing
popularity of this versatile flow transducer.

Turbine flowmeters provide:
Wide flow rangeability
Outstanding accuracy at low cost
Construction materials that permit use with many process fluids
Wide variety of process connections
Operation over a wide range of temperatures and pressures

KFL-Z(D) series Electronic Flowmeters mainly used for high pressure water injection, water
seepage in the oil field, metering station, etcetera. They are also applicable to industries of
petroleum, chemical engineering, pharmacology, papermaking, electric power, environmental
protection and so forth.

1.2 Structure and Operation Princple

Inside a turbine flowmeter, the flowing medium engages a vaned rotor, causing it to rotate at an
angular velocity that is directly proportional to the flowrate. As the turbine rotates, an ac voltage is induced in a magnetic pickup coil mounted outside the fluid process. As each turbine blade
passes the base of the pickup coil, the magnetic flux density is affected, inducing a voltage pulse. Each pulse represents a distinct volume of fluid that has been displaced through two adjacent rotor blades. The pulse rate generated is thus a very accurate measure of flowrate, and the total number of pulses an equally accurate measure of displaced volume. The turbine flowmeter is an intrusive flow measurement device, and, therefore, the pressure- drop characteristic is an important consideration.

1.3 Categories

According to product codes, they can be categorized into KFL-Z series Electronic Flowmeter and KFL-D series Electrical Flowmeter. The two series have identical structure, the only difference is that there is a single chip micyoco (SCM) on the visual display unit, which can show and store date, time, daily flow rate and total flow rate. According to transducer shape and difference in angle of input port and output port, the products are categorized into Straight-way Electronic Flowmeter and Right Angle Electronic Flowmeter. The products can also be categorized into local display and remote display based on the displays form. The remote display means the visual display unit and flow transmitter are connected by a signal line in 200 meters which is the maximum distance.

1.4 Features
Detachable: The core plates are movable for purposes of periodic examination and
maintenance;
Multi-functions: analog signals output and pulse output interfaces which are helpful for
management and controlling;
Low power consumption: 4 AA batteries can be used up to 2 years;
Stable performance: using of impeller which is anti-vibration, anti-jamming, and
measuring accurately;
Multi-connection: flange connection, welded connection, and so on.