Product Introduction
The 24701-16-05-15-120-03-02 is a proximity probe housing assembly from Bently Nevada. This unit combines a reverse mount 3300 XL 8mm probe with a stainless steel housing body. Specifically, it shields the probe from dust, water, and mechanical damage on turbines, compressors, and large motors. Therefore, plant teams gain stable vibration and Keyphasor signals with less maintenance effort.
Technical Specifications
This assembly includes a 3300 XL 8mm probe with a 0.5 m (20 in) probe cable. The probe penetration depth is 12 inches, and the standoff adapter provides a minimum length of 1.5 in (38 mm). Additionally, the mounting thread is a 3/4-14 NPT connection, which is mandatory when a standoff adapter is fitted.
The fittings option delivers one 3/4-14 NPT plug, one 3/4-14 to 1/2-14 NPT reducer, and one cable seal grip. Moreover, the grommet set accepts cable sizes from 1/8 to 3/16 inches, 1/4 to 5/16 inches, and 5/16 to 3/8 inches. The maximum combined (C) + (D) dimension reaches 13.5 in (34.3 mm).
The housing body uses 303 stainless steel, while the probe sleeve uses 304 stainless steel. Each assembly consists of a dome cover that screws into the housing body, threaded conduit ports, the probe sleeve, O-rings, the reverse mount probe, a thread seal, and the optional conduit fittings and standoff adapter.
Mechanical and Environmental Parameters
The 24701-16-05-15-120-03-02 provides a robust stainless steel barrier against plant contaminants and washdown. The dome cover threads into the body for a tight, serviceable seal. Meanwhile, the O-rings protect the internal cavity from moisture and dust ingress.
With the standoff adapter installed, the probe sits farther from the casing surface, which suits insulated or thick-walled machines. The 12-inch penetration supports deep mounting positions. Additionally, the 0.5-meter cable keeps routing short inside crowded junction boxes. The typical weight is 1.8 kg (4.1 lb) without fittings.
Installation Guide
First, confirm the machine port matches the 3/4-14 NPT mounting thread. Next, fit the standoff adapter and thread seal, then insert the probe sleeve to the required depth. After that, route the probe cable through the cable seal grip and select the correct grommet size. Then, screw the dome cover onto the housing body. Finally, connect the probe to the extension cable and check gap voltage before startup.
Packaging List
24701-16-05-15-120-03-02 housing assembly (1 unit)
3300 XL 8mm reverse mount probe with 0.5 m cable (pre-installed)
1.5 in minimum standoff adapter
3/4-14 NPT plug
3/4-14 to 1/2-14 NPT reducer
Cable seal grip with grommet set
O-ring and thread seal set
Protective shipping carton
FAQ
Q1: What probe does this assembly include?
A: The 24701-16-05-15-120-03-02 includes a reverse mount 3300 XL 8mm probe with a 0.5-meter cable.
Q2: Why is a standoff adapter required here?
A: The 1.5-inch standoff adapter clears thick casings and insulation. A 3/4-14 NPT mounting thread is mandatory with this option.
Q3: What is the probe penetration depth?
A: This configuration provides a 12-inch probe penetration depth for deep mounting positions.
Q4: What material is the housing body?
A: The body uses 303 stainless steel, and the sleeve uses 304 stainless steel for corrosion resistance.
Q5: What shipping methods do you offer?
A: We ship via Fedex, UPS, and DHL. Orders usually dispatch within 3 to 5 business days after payment confirmation.
