3300 XL Reverse Mount Probe 330105-02-12-20-12-CN

Bently Nevada 330105-02-12-20-12-CN Reverse Mount Probe

Product Introduction

The Bently Nevada 330105-02-12-20-12-CN belongs to the 3300 XL series of 8 mm reverse mount probes. You can use this model in tight machinery spaces where standard probes cannot fit. It measures vibration and position accurately. The probe includes a FluidLoc cable option (-12) and a Miniature ClickLoc coaxial connector. Furthermore, it carries hazardous area approvals for Zone 0 and Division 2 locations. Its 2.0 meter length gives you flexibility for remote mounting.

Technical Specifications

The 330105-02-12-20-12-CN uses a 3/8-24 probe case thread. Maximum length of thread engagement reaches 0.563 inches. Total length option -20 means 2.0 meters (6.6 feet). Connector option -12 specifies a Miniature ClickLoc coaxial connector with FluidLoc cable.

Agency approval option -CN indicates country-specific approval. Nominal DC resistance from center conductor to outer conductor is 7.88 ± 0.50 Ω for the 2.0 m length. Probe case material is AISI 303 or 304 stainless steel (SST). Probe tip material is polyphenylene sulfide (PPS). The probe weighs 323 g per meter (11.4 oz per meter). Dimensions are 20.4 cm x 22.2 cm x 3.7 cm.

FluidLoc Cable Consideration

Please note that the FluidLoc cable option -12 is not necessary for most 330105 and 330106 installations. The probe sleeve already provides sufficient protection. Therefore, consider your application carefully before ordering this option. Only choose it when fluid ingress is a genuine concern.

Temperature and Environmental Parameters

The standard probe operates from -52°C to +177°C (-62°F to +350°F). Extended temperature range allows the probe tip to reach +218°C (+425°F). The cable and connector for extended range handle -51°C to +260°C (-60°F to +500°F).

However, exposing the probe to temperatures below –34°C (–30°F) may cause premature failure of the pressure seal. Humidity performance shows less than a 3% change in Average Scale Factor (ASF) after 56 days at 93% relative humidity per IEC 68 2 3. The pressure seal uses a Viton® O-ring. Probes are not pressure tested before shipment.

Hazardous Area Approvals

The Bently Nevada 330105-02-12-20-12-CN carries multiple approvals. When installed with intrinsically safe zener barriers (drawing 141092) or galvanic isolators, it meets Class I, Zone 0: AEx/Ex ia IIC T5...T1 Ga. It also suits Class I, Groups A, B, C, D, Class II, Groups E, F, G, and Class III.

For non-incendive circuit connections per drawing 140979, it meets Class I, Zone 2: AEx/Ex nA IIC T5…T1 Gc and Class 1, Division 2, Groups A, B, C, D. Additionally, it meets Class I, Zone 2: AEx/Ex ec llC T5…T1 Gc.

Temperature Schedule for EPL Ga and Gc

• T1: -55°C to +232°C

• T2: -55°C to +177°C

• T3: -55°C to +120°C

• T4: -55°C to +80°C

• T5: -55°C to +40°C

Temperature Schedule for EPL Dc

• T280°C: Ta -55°C to +232°C

• T225°C: Ta -55°C to +177°C

• T170°C: Ta -55°C to +120°C

• T130°C: Ta -55°C to +80°C

• T105°C: Ta -55°C to +100°C

• T90°C: Ta -55°C to +40°C

Installation Guidelines

First, verify your mounting hole matches the 3/8-24 thread. Next, screw the probe in carefully without cross-threading. Use the Miniature ClickLoc connector to attach to extension cables. Additionally, keep the cable bend radius gentle to avoid internal damage. Do not expose the probe tip to temperatures below –34°C before or during operation. Finally, confirm the total length of 2.0 meters fits your measurement point correctly.

Packaging List

• Bently Nevada 330105-02-12-20-12-CN probe (1 unit)

• Miniature ClickLoc coaxial connector with FluidLoc cable (pre-attached)

• Quick start guide

Note: No certificates or warranty documents are included.

Shipping

We ship worldwide via FedEx, UPS, or DHL. Delivery usually takes 3–7 business days.

Frequently Asked Questions (FAQ)

1. Do I really need the FluidLoc cable on the 330105-02-12-20-12-CN?
Most installations do not need it because the probe sleeve offers enough protection. Order it only for high fluid ingress risks.

2. What hazardous area approvals does this probe carry?
It carries Class I Zone 0 (ia) and Class I Division 2 (nA/ec) approvals. Refer to the temperature schedule for limits.

3. Can I use the Bently Nevada 330105-02-12-20-12-CN below -34°C?
Exposure below -34°C may damage the pressure seal. Avoid this temperature range.

4. What is the nominal resistance of this 2.0 meter probe?
The resistance from center conductor to outer conductor is 7.88 ± 0.50 Ω.

5. Is the 330105-02-12-20-12-CN pressure tested before shipping?
No. Bently Nevada does not pressure test these probes prior to shipment. Contact custom design if testing is required.