- Brand: Endress+Hauser
- Model: Nivotester FTW325 Series
- Part Number: FTW325-A2A1A
- Type: Conductive Level Limit Switch for Liquid Level Monitoring
- Technical Specs:
- Core Application: Conductive point level detection, overfill prevention, pump dry-run protection, and two-point level control of conductive liquids in storage tanks and process vessels.
- Order Code Structure (A2A1A Breakdown):
- A: Approval: Non-hazardous area (Standard / CE)
- 2: Housing: Rail mounting, 22.5 mm width, IP20
- A: Power Supply: 85 to 253 V AC (50/60 Hz)
- 1: Input / Channel: 1x Channel
- A: Output: 1x Relay output
- Operating Principle: Evaluates the electrical resistance/conductivity between probe electrodes and the conductive vessel wall (or reference electrode) using low-frequency AC measuring voltage.
- Power Supply Range: 85 to 253 V AC (50/60 Hz)
- Power Consumption: 2.0 W / 4.5 VA max.
- Connected Sensor / Probe Inputs: Compatible with Endress+Hauser conductive probes
- Measuring Circuit Voltage / Current: Approx. 10 V AC, < 2 mA
- Sensitivity / Threshold Range: Adjustable sensitivity via front potentiometer
- Output Relay Contacts: 1 x Potential-free SPDT / CO changeover contact
- Relay Switching Capacity:
- AC: Max. 250 V AC / 2 A / 500 VA (cos φ ≥ 0.7)
- DC: Max. 40 V DC / 2 A / 80 W
- Operating Fail-Safe Modes: Selectable MIN or MAX safety logic
- Status & Diagnostic LEDs:
- Green LED: Power ON / Supply voltage state
- Yellow LED: Relay output status (Level state)
- Red LED: Fault / Cable break / Short circuit alert
- Terminal / Connection Type: Screw terminal blocks
- Wire Conductor Cross-Sections: 0.2 mm² to 2.5 mm² (24 to 14 AWG)
- Housing Material: Polycarbonate
- Mounting Format: Standard 35 mm DIN rail (EN 60715)
- Protection Class: IP20
- Ambient Operating Temperature Range: -20°C to +60°C
Weight: 150 g
Dimensions: 120 x 110 x 22 mm
Country of Origin: Germany
HS Code: 9032.89.00