YANG MARINE AUTOMATIONElectrical & Automation Repair Specialists

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Parts Catalog

Sensors & Transmitters

The instruments feeding every gauge and alarm on a vessel: pressure, temperature, level, flow, position, and vibration sensing across the engine room and cargo systems.

Pressure Transmitter

Gauge pressure sensing for hydraulic and lube-oil systems. Slow drift is the typical ageing pattern here, so we calibrate a suspect unit before condemning it outright.

Differential Pressure Transmitter

Measures the pressure drop across a filter or tank boundary — as much a filter-condition indicator as a pressure sensor.

Pressure Switch

A simple trip-contact switch for lube-oil and cooling water alarms. The set point is the usual culprit when an alarm trips too early, or not at all.

PT100 Temperature Sensor

Resistance-based temperature sensing for engine and generator monitoring. A broken sheath or corroded element tends to peg the reading high or low, not just nudge it slightly off.

Thermocouple (Type K)

Handles the exhaust gas and high-temperature points a PT100 isn't rated for — exactly where they tend to fail first, from thermal cycling.

Resistance Bulb

A direct replacement element for temperature indicating systems, useful when the sensing bulb has failed but the display and wiring around it are still good.

Level Transmitter

Continuous tank or sump level sensing. Radar types avoid the fouling problems that hydrostatic types can develop in dirty tanks, which matters when choosing a replacement.

Float Level Switch

A mechanical bilge alarm and pump-control switch. The float mechanism sticking with age or fouling is by far the most common reason one stops triggering.

Flow Switch

Catches loss of flow in a cooling water or lubrication line before the downstream damage does. A false trip is more often fouling on the paddle than an electrical fault.

Inductive Proximity Sensor

Non-contact sensing for speed or position on rotating machinery. The gap between sensor and target drifting out of spec causes more missed readings than the sensor itself failing.

Limit Switch

A mechanical end-of-travel switch on valves and watertight doors. Roller and lever wear takes these out long before the switch body does.

Tachogenerator / Speed Pickup

Feeds shaft or engine speed back to the governor. An intermittent signal here can look exactly like a governor hunting problem until you isolate which one is actually at fault.

Rotary Encoder

Converts rotational position or speed into a digital feedback signal. Bearing wear inside the encoder itself is easy to miss because the symptom looks like a control-loop problem.

Vibration Sensor / Accelerometer

Monitors machinery vibration for early warning before a shutdown-level fault develops. Mounting condition matters as much as the sensor's own health for a reading you can trust.

Position Transmitter

Feeds valve, rudder, or actuator position back to a control system. A transmitter reporting a position that doesn't match reality is one of the more disruptive faults to chase, since it can drive the wrong control action.

Oil Mist Detector Head

Early warning for crankcase bearing failure via oil mist concentration. A run of nuisance alarms usually means the sampling line needs attention, not necessarily the detector head.

Oxygen / Gas Analyzer

Measures gas concentration for inert gas systems and safety alarm circuits, where sensor drift is expected over time and scheduled calibration matters more than for most instruments on this list.

Salinity / Conductivity Sensor

Monitors distillate quality on a freshwater evaporator, flagging seawater carryover before it reaches the feed or potable water side. Probe fouling is the usual reason a reading drifts.