The BAPI BA/1K-RPP-18"-BBX is a single-point remote probe built around a rigid 304 stainless steel probe, 1.75 in long and 0.25 in OD, with a double-encapsulated element and a passive 1K Platinum RTD (385 Curve). It ships with 18 in (0.46 m) of flame-retardant PVC plenum-rated cable, factory-terminated into a BAPI-Box Crossover (BBX) enclosure.
Remote probes earn their keep where an immersion or duct sensor physically will not fit — refrigerated case monitoring, strap-on pipe sensing, thermowell inserts, chamber measurement and L-bracket mounting in tight or hard-to-reach spaces. The element is passive and has no polarity, so both leads land directly on any controller analog input configured for the 1K Platinum RTD curve. The BAPI-Box Crossover (BBX) gives you a rated termination point right at the mounting surface instead of a splice above the ceiling.
Specifications
| Sensing Element | 1K Platinum RTD (385 Curve), PTC, 2-wire passive |
| Output | Resistance |
| Accuracy | 0.12% @ Ref, or ±0.55°F (±0.3°C) |
| Stability | ±0.25°F (±0.14°C) |
| Self Heating | 0.4 °C/mW @ 0°C |
| Sensitivity | 3.85Ω/°C approx. @ 32°F (0°C) |
| Probe Range | -40° to 221°F (-40° to 105°C) |
| Probe / Body | Rigid 304 stainless steel, 1.75 in (44.5 mm) long, 0.25 in (6.35 mm) OD |
| Lead Length | 18 in (0.46 m) |
| Wire Insulation | Flame-retardant PVC plenum-rated cable |
| Lead Wire | 22 AWG stranded |
| Enclosure | BAPI-Box Crossover (BBX) |
| Enclosure Rating | IP10, NEMA 1 |
| Enclosure Material | Cover: polycarbonate UL94 V-0 · Base: nylon UL94 HB |
| Enclosure Dimensions | 3.1 × 2.2 × 1.9 in (79 × 56 × 49 mm) |
| Conduit Entries | Hinged thumb-latch cover, one 1/2 in open port (IP44 with BA/PKP-100 knockout plug) |
| Wall Gasket | Closed cell foam |
| Enclosure Ambient | -40° to 221°F (-40° to 105°C) |
| Operating Range | Units with plenum-rated wire: -4° to 167°F (-20° to 75°C), 0-100% RH non-condensing |
| Agency | RoHS, CE (passive thermistors 20KΩ and smaller), PT = DIN43760 | IEC Pub 751-1983 | JIS C1604-1989 |
Installation Notes
- Wire with twisted pair, 22 AWG minimum, using sealant-filled connectors. Heavier gauge may be needed on long runs.
- Do not share conduit with high or low voltage AC power wiring — BAPI testing shows signal error when AC runs alongside sensor leads.
- Two-wire passive element, no polarity. Land both leads on the controller analog input.
- For strap-on pipe mounting, insulate a minimum of four pipe diameters on each side of the probe (a 1/2 in pipe needs 2 in of insulation each way, wrapped fully around).
- The break-off tab on a BAPI Flexible Probe Bracket (BA/FPB) accepts the 1/4 in probe body and limits heat conduction from the mounting surface.
- Mount the enclosure with #8 screws through at least two opposing tabs; a 1/8 in pilot hole makes this easier.
- Use caulk or Teflon tape on conduit entries, and bring conduit in from the bottom for outdoor or wet locations.
Documentation
Product Datasheet (PDF) · Installation & Operation – BBX (PDF) · Enclosure Dimensions (PDF)
ZOT Supply is an authorized distributor for Building Automation Products, Inc. (BAPI). This product carries the full BAPI factory warranty.
- Product Family:
- Remote Probe
- Signal Type:
- Passive Resistive
- Sensing Element:
- 1K Platinum RTD (385 Curve)
- Cable Type:
- Plenum-Rated
- Lead Length:
- 18 in
- Enclosure:
- BAPI-Box Crossover (BBX)
- Enclosure Rating:
- IP10, NEMA 1
- Probe Material:
- 304 Stainless Steel
- Termination Option:
- Standard (Flying Leads)
- Mounting Style:
- Strap-On / Bracket / Thermowell
![BA/1K[375]-RPP-18"-BBX : Remote Probe, 1K Platinum RTD (375 Curve), Plenum-Rated Cable, 18 in (0.46 m) Lead Length, BAPI-Box Crossover Enclosure](https://cdn11.bigcommerce.com/s-ksbdsp5vfo/images/stencil/500x659/products/89510/130649/BAPI-45-RemoteProbeBBX__51418.1786939219.png?c=1 "BA/1K[375]-RPP-18\"-BBX : Remote Probe, 1K Platinum RTD (375 Curve), Plenum-Rated Cable, 18 in (0.46 m) Lead Length, BAPI-Box Crossover Enclosure")
