Liquid Level Control Relay FF PZ-828B 16 A, 1–100 kΩ, 230 V AC

FF PZ-828B is a liquid level control relay for monitoring and managing fluid levels in tanks, reservoirs and similar containers. It is designed to work with a 230 V AC supply and provides a switching capacity suitable for controlling pumps and alarm circuits. The relay accepts probe input resistances between 1 and 100 kΩ, making it compatible with common conductive level probes used in industrial and residential installations.

Advantages

The unit offers reliable on/off control with a rated switching capacity of 16 A, enabling direct control of many standard pumps and valves. Its wide accepted probe resistance range (1–100 kΩ) allows flexible integration with various probe types and installation conditions. The device is compact and intended for mounting in control panels or near the monitored vessel, providing a straightforward electrical interface for level control and alarms.

Suitable for

• Pump start/stop control in supply and drainage systems
• High-level and low-level alarm circuits
• Automatic filling and emptying systems
• Small industrial tanks and domestic water tanks

Key specifications

• Operating voltage: 230 V AC
• Switching capacity: 16 A
• Probe input resistance range: 1–100 kΩ
• Control function: liquid level monitoring and relay switching
• Intended installation: panel or equipment mounting near tank

How to use

Install the relay according to local electrical codes and the manufacturer's mounting guidance, ensuring the unit is connected to a 230 V AC supply. Connect the conductive level probes to the probe input terminals, keeping wiring and probe placement appropriate for the liquid type and tank geometry. Wire the relay output to the pump, valve, or alarm circuit, observing the 16 A switching limit and using a contactor if switching higher loads. Verify correct operation by testing high and low level conditions and adjust probe positions as required for the desired activation points.

Usage recommendations

Use probes and wiring rated for the liquid and environment (corrosion, conductivity, temperature). For loads exceeding 16 A or inductive motors, add an intermediate contactor to protect the relay contacts. Periodically inspect probe connections and relay terminals for corrosion or loose wiring to maintain reliable operation.