Auburn Instrument WCC-1138 Liquid Level Control Electrode Sensor

The Auburn WCC-1138 Liquid Level Control Electrode Sensor is a UL‑recognized, single‑piece stainless steel liquid level probe designed to terminate a level‑control circuit through a 3/8 in NPT threaded connection, making it a rugged sensing element for boiler and process equipment. The family comprises the standard WCC‑1138, the WCC‑1138L (long version), and the WCC‑1138‑3 (24‑inch stainless probe); common retailer references include CS13096 and cross‑refs such as E5‑WCC‑1138L and E5‑WCC‑1138‑3. Manufactured with stainless steel housings (typically 303 or 304 grade) and a single‑piece center electrode, the base model presents a probe length of about 3.32 inches, while the WCC‑1138‑3 variant extends to a 24‑inch probe for deeper liquid levels. In typical applications, these electrodes sense liquid presence to drive fill or drain actions in Auburn liquid level control systems for boilers and other vessels; note that the WCC‑1138 line is listed as discontinued by the manufacturer, so availability varies across distributors.