Aquamaster-Rauma RAUMASTC-2

Core Technical Specifications

• Full Model Number: RAUMASTC-2
• Brand Manufacturer: Aquamaster-Rauma (Rauma, Finland industrial fluid analysis division)
• Physical Mounting Standard: 35mm standard DIN top-hat rail snap-on mounting
• Overall Housing Dimensions: 110mm width × 125mm height × 70mm depth
• Net Weight of Complete Controller Unit: 0.42 kg
• Rated Operating Power Supply: AC 100–240V wide-range universal alternating current power supply, 50/60Hz frequency compatibility
• Maximum Total Power Consumption Under Full Load Operation: ≤8 VA
• Supported External Water Quality Sensor Input Signal Types
  1. pH/ORP glass electrode probe: 0–1000mV analog millivolt signal input
  2. Conductivity / TDS water salinity probe: 0–10V analog voltage signal input
  3. Free residual chlorine / total chlorine amperometric sensor: 4–20mA analog current signal input
  4. Water temperature NTC thermistor probe: 10kΩ negative temperature resistance signal input
• Built-In Digital Display Module: Backlit monochrome LCD screen, simultaneous dual parameter real-time numerical display, unit label indicator, fault alarm text code display window
• Internal Data Processing Resolution: 16-bit high-precision ADC analog-to-digital conversion chip for all sensor input signal channels
• Measurement Accuracy Tolerance Ranges
  1. pH measurement channel: ±0.02 pH full scale
  2. ORP redox potential channel: ±3 mV full scale
  3. Conductivity measurement channel: ±0.5% full scale range
  4. Chlorine residual concentration channel: ±0.03 mg/L full scale
  5. Water temperature measurement channel: ±0.2°C
• Configurable Analog Output Transmission Channel: 1 independent isolated 4–20mA analog current output channel, software configurable to transmit any single selected water quality parameter value to remote PLC / SCADA industrial control systems, maximum transmission load resistance 500Ω
• Built-In Relay Control Output Channels: 3 independent mechanical relay switch output channels, each relay rated contact load capacity AC 250V / 5A resistive load; each relay supports fully customizable user-programmable high-limit alarm, low-limit alarm, automatic dosing control on-off threshold logic with adjustable hysteresis dead band range
• User Operation Parameter Configuration Interface: 4 tactile membrane push-buttons on front panel for menu navigation, parameter value adjustment, sensor calibration program execution, alarm threshold setting, factory reset function activation
• Internal Data Storage Capacity: Non-volatile EEPROM memory chip, permanently store all user configured operating parameters, sensor calibration offset correction values, alarm threshold settings after full power supply cut-off, no data loss without backup battery power supply
• Built-In Fault Self-Diagnostic Function Library: Automatic real-time continuous monitoring of all connected external sensor probe signal input channels; detect open-circuit broken sensor cable faults, short-circuit probe damage faults, sensor calibration drift exceeding allowable tolerance range faults, internal ADC signal conversion circuit malfunction faults; trigger visual LCD screen fault code text display and audible internal buzzer alarm sound output when any fault condition is detected
• Overall Controller Housing Protection Class: IP30 front panel dust protection rating, rear wiring terminal cavity open ventilation design for DIN rail electrical cabinet internal installation only, strictly prohibited outdoor open-air exposed installation
• Allowable Operating Ambient Temperature Range (inside electrical control cabinet): 0°C ~ +50°C
• Spare Unit Long-Term Storage Temperature Range: -20°C ~ +70°C
• Internal Circuit Board Component Insulation Grade: Class B circuit board insulation, surface mount industrial grade electronic components with conformal coating anti-moisture and anti-corrosion treatment
• Compliance Certification Standards: CE industrial machinery electrical safety certification, RoHS environmental hazardous substance limit compliance certification, IEC 61010 laboratory measurement equipment safety standard certification