Yokogawa Two-wire Magnetic Flowmeter AXR050G
The ADMAG AXR two-wire magnetic fowmeter can be installed in the two-wire system without any AC power source, thus drastically reducing the initial instrumen- tation cost.
The ADMAG AXR is the world’s frst two-wire magnetic fowmeter which employs the fuid noise free “Dual Frequency Excitation Method,” achieving excellent stability for instrumentation.
Like the AXF four-wire magnetic fowmeter series, the ADMAG AXR has user-friendly functions such as a full dot-matrix LCD indicator, electrode adhesion level diagnosis function, and a multi-lingual display. The magnet switches can be used for checking and setting parameters without opening the case cover.
Note: The “Dual Frequency Excitation Method” is Yokogawa’s unique technology.
FEATURES
Yokogawa Two-wire Magnetic Flowmeter AXR050G
High Performance and Excellent Functionality
Dual Frequency Excitation Method
The “Dual Frequency Excitation Method” combines two strengths: stability in fow measurement due to low frequency excitation and high noise resistance due to high frequency excitation. Therefore, the method is strong against fuctuations of fuid condition and is ideal for stable measurement. Yokogawa Two-wire Magnetic Flowmeter AXR050G
High Accuracy
The ADMAG AXR performs 0.5% of rate under nor- mal fowrate conditions.
Electric Noise Resistance
The ADMAG AXR offers electric noise resistance compared with the four-wire magnetic fowmeter.
High Reliability
The ADMAG AXR complies with SIL2 for safety requirement. The ADMAG AXR has SIL2 capability for single fowmeter use and SIL3 capability for dual fowmeter use.
Reducing the Instrumentation Cost
Reducing the Wiring Cost
The two-wire system reduces the wiring cost drasti- cally.
Direct Connection with the DCS
AC power sources are not necessary. The ADMAG AXR can be connected with almost all distributors, signal conditioner cards, and input modules.
Energy Saving
Compared with four-wire magnetic fowmeters, the ADMAG AXR can drastically decrease power consupmtion. Yokogawa Two-wire Magnetic Flowmeter AXR050G
User-friendly Functionality
Enhanced Diagnostic Function
By checking the level of the insulating substance on the electrodes, it is possible to determine when main- tenance is required. Results of mean fow measurement during a given period, etc. can be checked by using parameters.
Clear and Versatile Indications
The full dot-matrix LCD indicator facilitates various displays such as one to three lines and multi-lingual display.
In an alarm condition, a full description of the coun- termeasure is indicated.
Parameter Setting
Magnet switches and push switches are employed. Magnet switches enable parameters to be set without opening the case cover in the hazardous area.
Various Output Signals
In addition to the current output, one output can be selected among pulse, alarm, and status. Vari- ous functions such as multiple-range, forward and reverse fow measurement, and fow rate upper/lower limit alarm are achieved. The pulse output is a high speed of 10,000 pps (pulses per second).
BRIEF SPECIFICATIONS
Yokogawa Two-wire Magnetic Flowmeter AXR050G
|
Structure
|
Integral flowmeter
|
|
ExcitationMethod
|
Dual frequency excitation
|
|
Nominal Pipe Size [Unit : mm (approx. inch)]
|
General-purpose use: 25 (1.0) to 200 (8.0) Explosion proof Type: 25 (1.0) to 100 (4.0)
|
|
Supply Voltage
|
Operating voltage range 14.7 to 35 V DC Two-wire system
|
|
Output Signals
|
Current output Digital output(One output can be selected from pulse, alarm or status outputs.)
|
|
Electrode Material
|
Stainless steel-JIS SUS316L (AISI 316L SS/EN 1.4404 equivalent), Hastelloy C276 equivalent, Tantalum, Platinum-iridium
|
|
Fluid Temp.
|
- 40 to 130 deg.C (- 40 to 266 deg.F) [ depends on model type ]
|
|
Ambient Temp.
|
- 40 to 55 deg.C (- 40 to 131 deg.F)
|
|
Accuracy
|
0.5% of rate (Note 1) [ depends on nominal pipe size and fluid condition ]
|
|
Fluid Conductivity
|
10 micro-S/cm or larger (Note 2) [ depends on nominal pipe size and fluid condition ]
|
|
Lining
|
Fluorocarbon PFA (Mirror-finished lining surface) (Note 3)
|
|
Lay Length [Unit : mm (approx. inch)]
|
|
Lay length code 1:
|
Wafer ; size 80 (3.0) to 200 (8.0),
|
|
|
Flange ; size 25 (1.0) to 200 (8.0)
|
|
Lay length code 2:
|
Wafer ; size 25 (1.0) to 200 (8.0)
|
|
|
Indicator
|
Full dot-matrix LCD
|
|
Operational Switch
|
4 magnet switches (including push switches)
|
|
Self Diagnosis
|
Electrode adhesion diagnosis, Coil open, etc.
|
|
Alarm Message
|
Alarm message with countermeasure is indicated ( English, German, French, Italian, Spanish, Japanese )
|
|
Options
|
Direction change of the electrical connection, Special Gaskets, Bar-magnet for operation of magnet switches, etc.
|
