Description
ABB AX460100010STD
- Technical Specifications:
- Measured Parameters: pH 0–14, ORP ±2000 mV
- Input: pH/ORP electrode + Pt100/Pt1000 temperature sensor
- Temperature Compensation: Automatic or manual, –10 °C to +130 °C
- Outputs: 2 × isolated 0/4–20 mA (assignable to pH/ORP/temperature), HART optional
- Display: Backlit LCD alphanumeric showing measured value, temperature, diagnostics
- Power Supply: 100–240 V AC or 24 V DC depending on variant
- Enclosure: IP65/NEMA 4X wall-mount or panel-mount
- Relay: Programmable alarm/control relays (typically 2)
- Calibration: 1-point / 2-point pH calibration; offset & slope check
- Functional Features:
- Self-diagnosis: electrode break, short-circuit, aging indication
- Password-protected menu, multi-language display
- HART protocol support for remote configuration & diagnostics
- Adjustable damping (filter time constant) to stabilize noisy measurements
- Application Scenarios:
- Chemical & pharmaceutical batch/reactor pH control
- Power plant boiler feedwater & condensate polishing
- Wastewater treatment neutralization basins
- Food & beverage fermentation and CIP rinse monitoring
- Material & Structure:
- Housing: Glass-fiber reinforced polyester or polycarbonate (corrosion-resistant)
- Gasket: EPDM or Viton depending on version
- Sensor connection: BNC or DIN plug for pH/ORP; screw terminals for temp sensor
- Working Principle:
The pH/ORP glass electrode generates a millivolt potential proportional to hydrogen ion activity or redox state. The AX460 amplifies this high-impedance signal, applies temperature correction using the RTD input, computes pH/ORP, and drives the display and isolated 4–20 mA outputs.
- Installation Requirements:
- Mount in weather-protected location if not rated for direct sun/rain exposure
- Use proper electrode mounting fitting (immersion, flow-through, or retractable)
- Keep sensor cable away from power lines; use shielded cable grounded at analyzer end
- Precautions:
- Perform regular 2-point calibration with fresh buffer solutions
- Do NOT allow pH glass bulb to dry out during storage — keep in KCl storage solution
- Verify process temperature does not exceed electrode maximum rating
