HMA LEVELSTATE TYPE 202 Liquid Level Controller / Level Switch Unit

Overview

The HMA LEVELSTATE TYPE 202 is a marine-grade liquid level control unit manufactured by HMA, widely used for bilge tank, service tank and fuel tank level monitoring on vessels. The HMA LEVELSTATE TYPE 202 works with level probes to detect liquid high and low level status, output relay contacts for pump auto-start/stop and alarm notification. It is built for continuous operation in humid, vibrating engine room environments and supports two-point level control. The HMA LEVELSTATE TYPE 202 is a common spare part for retrofitting and maintenance of legacy marine tank level control systems.

Features

The HMA LEVELSTATE TYPE 202 supports dual level set points for low-level pump start and high-level pump stop or high-level alarm. It provides potential-free relay output for bilge pump control and alarm circuit triggering. The HMA LEVELSTATE TYPE 202 has built-in fault detection for broken probe wiring and short-circuit conditions. It adopts compact panel mounting housing with corrosion-resistant coating suitable for marine cabin installation. The HMA LEVELSTATE TYPE 202 is compatible with HMA conductive level probes and matches original wiring for drop-in replacement.

Specs

Device Type: Conductive liquid level control unit Model: HMA LEVELSTATE TYPE 202Brand: HMA Sensing Principle: Conductive probe level sensing Control Points: Two level set points (low / high) Output: Potential-free relay contacts Power Supply: 24VDC / 110VAC / 220VAC marine supply options Mounting: Panel cutout mounting Application: Marine bilge tank, fresh water tank, fuel oil tank level control Environment: Ship engine room, pump room

Principle

The HMA LEVELSTATE TYPE 202 applies low voltage to the conductive probes installed inside the tank. When liquid touches the probe, the circuit closes and the control board identifies the level position. The unit compares the detected level with preset logic. When reaching low level, it activates the pump; when reaching high level, it stops the pump or triggers alarm. The HMA LEVELSTATE TYPE 202 also detects probe circuit failure and sends fault indication.

Applications

The HMA LEVELSTATE TYPE 202 is used for bilge automatic pump control on cargo ships and work boats. It serves fresh water and service oil tank level monitoring and automatic filling control. The HMA LEVELSTATE TYPE 202 applies to spare replacement and troubleshooting of existing HMA Levelstate marine level systems. It also supports small onshore tank level control and water sump pump control.