Description
This is a 21000 series proximity-probe housing assembly (aluminum housing) configured with a 3300 XL 8 mm reverse-mount proximity probe (with connector protector), a short factory cable, and explosion-proof conduit fittings. The 21000 housing family
is an all-metal assembly (dome cover, sleeve, O-rings, probe sleeve, thread seal, optional conduit fittings and standoff adapter) intended for external mounting so the probe and extension cable are accessible for gap
adjustment or replacement without disassembling the machine. The 21000 series (and the stainless 24701 variant) is offered with
hazardous-area (CSA / explosion-proof) approvals for use in classified locations.
| Frequently Asked Questions of 21000-34-05-15-029-04-02 |
| Q1 — Is this housing explosion-proof / usable in hazardous areas? Yes — the 21000 series housings are offered with CSA / explosion-proof approvals for hazardous areas. Verify the specific suffix/options (and the datasheet certificate) when ordering to ensure the exact assembly has the required hazardous-area ratings. |
| Q2 — Which probe is mounted in this assembly? Can I get a different probe? This specific part number uses the 3300 XL 8 mm probe with connector protector (reverse-mount). Bently offers other probe options and cable lengths — you can order different probe suffix codes if you need another probe family or length. Always confirm compatibility (reverse vs forward mount) when changing probes. |
Q3 — What does the cable length code 05 mean?Vendor listings indicate 05 corresponds to 0.5 m (≈20 in) factory probe cable. Other codes (e.g., 10) represent different lengths (1.0 m, etc.). Confirm with the datasheet/order guide for the full code table. |
3300 XL Proximity Probe
3300 Proximitor Sensor
3500 Power Supply
1900/65A
3500/42 Monitor Module
The 990 Vibration Transmitter
| 330905-00-10-10-02-00 | 330878-90-00 | 330851-02-000-060-10-00-CN |
| 330905-00-07-10-12-CN | 330877-080-36-00 | 330850-90-CN |
| 330905-00-07-10-02-05 | 330877-040-37-00 | 330850-90-00 |
| 330905-00-07-10-02-00 | 330851-06-000-070-50-00-05 | 330850-50-05 |
| 330905-00-05-10-12-CN | 330851-06-000-070-10-00-05 | 330850-50-00 |
| 330905-00-05-05-02-CN | 330851-05-000-040-50-01-05 | 330780-91-00 |
| 330903-00-06-05-02-05 | 330851-04-000-023-10-01-05 | 330780-90-00 |
| 330901-11-25-10-01-00 | 330851-02-000-070-90-00-05 | 330780-51-00 |
| 330901-10-25-10-02-00 | 330851-02-000-060-50-00-05 | 330780-50-CN |
| 330900-50-00 | 330851-02-000-060-50-00-00 | 330780-50-00 |
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