YOKOGAWA AXF Magnetic Flowmeter Series

The AXF magnetic flowmeter series are sophisticated

products with outstanding reliability and ease of

operation, developed on the basis of decades of field

proven experience.

The combination of a replaceable electrode and the

diagnostic to defect adhesion level on the electrodes

dramatically improves maintainability.

The AXF employs the fluid noise free “Dual Frequency

Excitation Method” and the newly added “Enhanced Dual

Frequency Excitation Method” as an option for more

difficult applications to ensure greater stability and quicker

response.

Note: The “Dual Frequency Excitation Method” is

Yokogawa’s unique technology.

Fieldbus communication type is also available.

Refer to GS 01E20F02-01E for FOUNDATIONTM fieldbus

communication type and GS 01E20F12-01E for

PROFIBUS PA communication type regarding the items

marked with “ ”.

■FEATURES

• User-oriented Functionality Fluid Adhesion Level Diagnosis

By constantly monitoring the level of insulating

substance on the electrodes, it is possible to determine

when maintenance is required.

With the utilization of an optional replaceable electrode,

the electrodes can be easily removed from the flowmeter

and cleaned.

• Flexible Electrical Connection Direction

The converter or the terminal box can be rotated

arbitrarily to change the directions of electrical

connection on the site.

• Clear and Versatile Indications

The LCD indicator employs a large, backlit full dot

matrix, that can facilitate various displays.

One to three lines are available. When there is an alarm

condition, a full description of the countermeasure is

indicated.

“Easy Setup” Parameters “ ”

The most frequently used parameters are arranged in a

group at the top.

The infra-red switches enable the users to set

parameters without opening the cover.

● Expansion of Product Lineup

Improved Accuracy Specification

The standard accuracy is 0.35% of reading. Also

available is an optional high accuracy calibration rated at

0.2% of reading.

Extra Small Size Flange Type

Remote Flowtube

The flange type is now available from a 2.5 mm size.

Various Sanitary Connections

A variety of sanitary connections are available, such as

Tri-Clamp, ISO, DIN and SMS.

● Enhanced Performance and Specifications

Enhanced Dual Frequency Excitation Method

The “Enhanced Dual Frequency Excitation Method” can

be optionally selected.

For difficult applications such as for high concentration

slurries or low conductivity fluid, extremely stable

measurements can be realized.

Improved Minimum Conductivity

The newly designed AXF converter permits the

measurement of fluids with conductivity as low as 1µS/cm.

High-Speed Pulse Output “ ”

The pulse rate now goes up to 10.000 pps (pulse/

second) for use with high speed applications such as in

short time batch processes.

Versatile Input/Ouput Function for Integral Flowmeter

“ ”

Integral type is also equipped with versatile input/output

function.

STANDARD SPECIFICATIONS

Converter (Integral flowmeter)

The contents of (*1) and  (*2)  described in the converter

specifications are follows.

*1: Select two points from: one pulse output, one alarm

output, one status input, or two status outputs.

*2: For models without an indicator, the configuration tool

(Such as HHT (handheld terminal) or FieldMateTM

etc.) is necessary to set parameters.

Excitation Method:

• Standard dual frequency excitation:

Size 2.5 to 400 mm (0.1 to 16 in.)

• Enhanced dual frequency excitation:

Size 25 to 200 mm (1.0 to 8.0 in.)

(Optional code  HF1 or HF2)

Input Signal (*1) “ ”:

One Status Input: Dry contact

Load Resistance: 200 Ω or less (ON), 100 kΩ or more

(OFF)

Output Signals “ ”:

• One Current Output: 4 to 20 mA DC (load resistance:

750Ω maximum, including cable resistance)

• One Pulse Output (*1):

Transistor contact output (open collector)

Contact capacity: 30 V DC (OFF), 200 mA (ON)

Output rate: 0.0001 to 10.000 pps (pulse/second)

• One Alarm Output (*1):

Transistor contact output (open collector)

Contact capacity: 30 V DC (OFF), 200 mA (ON)

• Two Status Outputs (*1):

Transistor contact output (open collector)

Contact capacity: 30 V DC (OFF), 200 mA (ON)

Communication Signals “ ”:

BRAIN or HART communication signal

(Superimposed on the 4 to 20 mA DC signal)