31000-28-05-15-030-00-02 Bently Nevada proximity probe housing Description The Bently Nevada 31000‑28‑05‑15‑030‑00‑02 Proximity Probe Housing is a housing assembly from Bently Nevada, model series 31000 (i.e., the “31000/32000” series of proximity-probe housings) in which a proximity probe (such as the 3300 XL) can be mounted externally to the machine casing.It allows external access to the probe and its extension cable, which means the gap or probe can be adjusted/replaced