Gear Flow Meter Mode GF

Attention!

• Please read and understand all the contents of this Manual prior to installation and use so as to ensure correct installation, circuit connection, operation and maintenance.

• This Manual shall be kept by the final user.

• Keep this Manual until the product is scrapped.

• We may change the technical specification of the product

• without a prior notice.

Product Characteristics

• High voltage resistance (1.0-45MPa)

• High and Iow temperature resistance(-196°C-200℃C)

• Able to measure different kinds of viscous media.

• High precision and repeatability

• Impulse output/Analog output available

• Range ratio width (1:100)

• Broad range of measurement

• Strong corrosion and pollutant resistance (acid and alkaline)

Scope of Application

• Resin and glue

• Hydraulic oil, Iubricating oil and grease

• Fuel oil

• Printing ink and asphalt

• Liquid nitrogen,refrigerant and solvent

• Edible oil, fish oil and food canning

• Fluid quantitative control system

Overview

Gear flow transmitter belongs to a kind of volumetric flow transmitter and can be used for measuring volume and flow precisely. The flowing medium makes the gear engage and rotate.Under the flowing effect of fluid, pressure difference is formed between the inlet and outlet of instrument. One pair of gears can rotate freely without the need of power supply.The empty cavity between gears is filled with liquid,which is discharged through rotation. The liquid flowing through instrument and liquid flow can be known through measuring the number of revolutions of gear.

The rotation speed of the transmitter is detected by the sensing coil inside the signal amplifier on the case. The signal amplifier cannot contact the measured medium. The magnetic line of force generated inside the permanent magnet inside the case due to transmitter gear cutting wilead to flux change inside the sensing coil. The sensing coil sends the signal of flux change cycle detected to the pre-amplifier so as to amplify and shape the signal. The impulse signal which is in direct ratio with flow velocity will be sent to the unit conversion and flow integration circuit to obtain and display the accumulative flow valve. At the same time,it will also send the impulse signal to frequency current conversion circuit to convert the impulse signal to simulation amperage so as to display the instantaneous flow value.

The transmitter has high processing precision and can be installed precisely. The gear rotation undergoes non-contact scanning. One impulse is generated by one gear with very high resolution. The column gear transmission can measure the liquid with very small flow and small quantitative volume.

Calculation Formula

K coefficient of gear flow transmitter (flow coefficient) definesthe number of impulses per L within the unit flow precisely.The following formula is used:

Q=Fx60/K

Q= Instantaneous flow L/min

F= Frequency of output impulse (HZ)K= Coefficient of gear flow meter (impulse/min)

Features

As a kind of new volumetric flow transmitter, the round gear flowtransmitter is used for measuring the flow or instantaneous flowof the liquid inside pipeline precisely, either in a continuous ordiscontinuous manner.

It is particularly suitable for the measurement of heavy oil. Flowmeasurement of media with high viscosity such as vinol and resin.(It can be used for measuring the fluid the viscosity of which isas high as 10,000 Pa.s) with the characteristics of small volume,light weight, small operation noise and stable operation.

It can also be used for measuring the micro flow of small pipediameter. With small startup flow and broad range ratio,it isapplicable to the measurement of liquid flow with significantchange and its measurement precision is not affected by eitherpressure or flow change. It is stable in performance, long inservice life and large in circulation capacity.

Basic Range

Product diagram