YOKOGAWA ADMAG TI Series AXW Electromagnetic Flow Meter (25-450mm) Installation and Operation

Grounding requirements: The protective grounding resistance should be ≤ 100 Ω (Class D), and the lightning protection requirement should be ≤ 10 Ω (Class C); Metal pipelines should be connected to sensor flanges through grounding rings or grounding wires first, while plastic pipelines must use grounding rings.

(2) Remote transmitter installation

Installation location: Avoid direct sunlight and ensure that the environment meets temperature/humidity requirements; AXW4A can be installed vertically/horizontally on 2-inch pipes, while AXG1A/AXFA11G supports surface mounting, 2-inch pipe mounting, and panel mounting (must meet load-bearing requirements: AXG1A 3.5kg, AXFA11G 3.4kg, and the bracket needs to withstand 4 times the weight).

Direction adjustment: The cable entry direction (non submersible/DHC type) can be rotated by -90 °/+90 °/+180 °, and the display screen direction can be rotated clockwise by 90 ° (the cover plate needs to be removed, pay attention to protecting the threads and O-ring).

3. Gasket selection and size

Core requirement: The inner and outer diameters of the gasket must not extend into the pipeline to avoid fluid leakage or affect measurement; Different linings (such as natural hard rubber, PTFE, polyurethane rubber) need to be matched with corresponding hardness gaskets (such as non asbestos gaskets, PTFE coated gaskets), with thickness reference to Tables 3.3.1/3.3.4.

Size inquiry: The user's pipeline gasket size should refer to Table 3.3.8, specifying the effective sealing inner diameter (ø A) and recommended gasket inner diameter (ø C/ø D) corresponding to different linings and connection types (wafer/flange).

Wiring specifications

1. Preparation before wiring

Cable requirements:

Excitation/power/IO cables: JIS C 3401 control cables and JIS C 3312 power cables are recommended, with a wire diameter of 0.5~2.5mm ² (single strand)/0.5~1.5mm ² (multiple strands), and the outer diameter needs to match the cable sealing sleeve (such as waterproof sealing sleeve compatible with 7.5~12mm).

Special signal cable (AX01C): Double shielded structure, with a maximum length of 200m when paired with AXG1A/AXFA11 and 100m when paired with AXW4A. Cutting or splicing is prohibited, and excess length must be cut off.

Protective measures: When the ambient temperature is above 50 ℃, cables with a temperature resistance of 70 ℃ or above are required; Power and signal cables need to be separately threaded through steel conduits (excluding 24V power supply and 4-core cables); Explosion proof wiring must comply with the corresponding explosion-proof standards.

2. Wiring operation

Power wiring: DC power supply should pay attention to the positive and negative poles (L/+connected to the positive pole, N/- connected to the negative pole), and 24V models should not be connected to 100-240V power supply; 15A external switch/circuit breaker needs to be installed and labeled as "power-off equipment".

Grounding Wiring: The protective grounding wire requires a 600V ethylene insulated cable, and the terminals require circular crimping terminals (M4 screws) with insulation covers to ensure reliable connection; Remote type requires separate grounding sensors and transmitters.

Cable entrance sealing: Unused entrances need to be sealed with dedicated plugs, waterproof sealing sleeves need to be evenly tightened (to avoid damaging the cable due to over tightening), and vertical conduits need to be equipped with drainage valves at the low end and regularly drained.

3. Communication and IO wiring

Communication protocol wiring: Modbus requires 3-core shielded wire (AWG24 or above), FOUNDATION Fieldbus/PROFIBUS PA requires Type A cable, EtherNet/IP requires CAT5e or above shielded twisted pair (without protective cover).

IO signal wiring: current output (4-20mA), pulse output (maximum 10000 pulses/second), status input (no voltage contacts), etc. need to be wired according to the terminal configuration table (such as 4.4.4/4.5.2) to ensure galvanic isolation (input/output/power circuits are isolated from each other).

Basic operations and parameter settings

1. Operation method

Display screen operation: Operated through three infrared (IR) buttons ([SET], [SHIFT], [▼]), supporting parameter viewing/modification, zero point adjustment, etc; The default display language is English, which can be switched through "Device setup ► Language" (supports multiple languages such as Chinese, French, German, etc., depending on the display code).

Operation level: divided into three levels: Operator (no password required, only basic display settings), Maintenance (maintenance personnel, password required, including zero adjustment), Specialist (expert, password required, full parameter settings), default password "0000".

2. Key operational procedures

(1) Mode switching: Display mode → Set mode

Long press [SET] for a few seconds, touch [FFT]+[INC];

Select "Yes" with [INC], double-click [SET] to confirm;

Select the operation level, enter the corresponding password (Maintenance/Specialist requires password), and enter the "Device setup" menu.