The BAPI BA/1K-RPP-5'-WP 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 5 ft (1.5 m) of flame-retardant PVC plenum-rated cable, factory-terminated into a Weatherproof (WP) 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 Weatherproof (WP) 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 | 5 ft (1.5 m) |
| Wire Insulation | Flame-retardant PVC plenum-rated cable |
| Lead Wire | 22 AWG stranded |
| Enclosure | Weatherproof (WP) |
| Enclosure Rating | NEMA 3R, IP14 |
| Enclosure Material | Cast aluminum, UV rated |
| Enclosure Dimensions | 2.75 × 2.16 × 4.50 in (69.9 × 54.9 × 114.3 mm) |
| Conduit Entries | Two 1/2 in FNPT entries (bell box) |
| Wall Gasket | 0.25 in (6.35 mm) closed cell foam, mold impervious |
| Enclosure Ambient | -40° to 212°F (-40° to 100°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 (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:
- 5 ft
- Enclosure:
- Weatherproof (WP)
- Enclosure Rating:
- NEMA 3R, IP14
- Probe Material:
- 304 Stainless Steel
- Termination Option:
- Standard (Flying Leads)
- Mounting Style:
- Strap-On / Bracket / Thermowell
