![BA/T1K[-7 TO 49C]-RPP-18"-BB2 : Remote Probe Temperature Transmitter, 4-20 mA, -7 to 49C, 18 in (0.46 m) Lead Length, BAPI-Box 2 Enclosure](https://cdn11.bigcommerce.com/s-ksbdsp5vfo/images/stencil/1280x1280/products/89573/130712/BAPI-46-RemoteProbeBB2__71120.1786939253.png?c=1 "BA/T1K[-7 TO 49C]-RPP-18\"-BB2 : Remote Probe Temperature Transmitter, 4-20 mA, -7 to 49C, 18 in (0.46 m) Lead Length, BAPI-Box 2 Enclosure")
![BA/T1K[-7 TO 49C]-RPP-18"-BB2 : Remote Probe Temperature Transmitter, 4-20 mA, -7 to 49C, 18 in (0.46 m) Lead Length, BAPI-Box 2 Enclosure](https://cdn11.bigcommerce.com/s-ksbdsp5vfo/images/stencil/500x659/products/89573/130712/BAPI-46-RemoteProbeBB2__71120.1786939253.png?c=1 "BA/T1K[-7 TO 49C]-RPP-18\"-BB2 : Remote Probe Temperature Transmitter, 4-20 mA, -7 to 49C, 18 in (0.46 m) Lead Length, BAPI-Box 2 Enclosure")
The BAPI BA/T1K[-7 TO 49C]-RPP-18"-BB2 is a loop-powered temperature transmitter that pairs a 1KΩ platinum RTD (385 curve) probe with an onboard transmitter circuit, factory-calibrated to a -7 to 49°C span and housed in a BAPI-Box 2 (BB2) enclosure. It delivers 4 to 20 ma, 2-wire loop to your controller, so the signal arrives already linearized — no resistance curve to configure at the front end.
The sensing element is a rigid 304 stainless steel probe, 1.75 in long and 0.25 in OD, terminated with 18 in (0.46 m) of flame-retardant PVC plenum-rated cable. The transmitter linearizes the signal at the device, so the controller input is configured for a standard analog signal rather than a thermistor or RTD resistance curve. BAPI specifies a 12 to 40 VDC supply on a 2-wire loop, and calls for the transmitter to be mounted at least 5 ft from any radio wave-emitting device.
Specifications
| Output | 4 to 20 mA, 2-wire loop |
| Calibrated Range | -7 to 49°C |
| Power Required | 12 to 40 VDC |
| Output Wiring | 2-wire loop |
| System Accuracy | ±0.065% of span |
| Linearity | ±(0.125 × T-20°C)/100 |
| Output Limits | <1 mA (short), <22.35 mA (open) |
| Load | 850Ω @ 24 VDC |
| Sensing Element | 1KΩ Platinum RTD @ 0°C, 385 curve, 2-wire |
| RTD Accuracy | 0.12% @ Ref, or ±0.55°F (±0.3°C) |
| RTD Sensitivity | 3.85Ω/°C approx. @ 32°F (0°C) |
| Probe Range | -40° to 221°F (-40° to 105°C) |
| Transmitter Ambient | -4° to 158°F (-20° to 70°C), 0-95% RH non-condensing |
| 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 2 (BB2) |
| Enclosure Rating | IP66, NEMA 4 |
| Enclosure Material | UV-resistant polycarbonate, UL94 V-0 |
| Enclosure Dimensions | 4.9 × 2.8 × 2.4 in (125 × 72 × 60 mm) |
| Conduit Entries | Three 1/2 in NPSM entries and three 1/2 in drill-outs |
| Wall Gasket | 0.25 in (6.35 mm) closed cell foam, mold impervious |
| Enclosure Ambient | -40° to 185°F (-40° to 85°C) |
| Operating Range | Units with plenum-rated wire: -4° to 167°F (-20° to 75°C), 0-100% RH non-condensing |
| Agency | CE EN 61326-1:2013 EMC (Industrial), RoHS, 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 NEC Class 1, 2 or 3 AC power wiring, or with feeds to motors, contactors or other highly inductive loads.
- Keep the transmitter at least 5 ft from any radio wave-emitting device — two-way radios within that distance can cause interference.
- Wire with power disconnected. Incorrect supply voltage, polarity or connections can damage the unit and will void the warranty.
- 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 – Transmitters (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:
- 4-20 mA Transmitter
- Sensing Element:
- 1K Platinum RTD (385 Curve)
- Cable Type:
- Plenum-Rated
- Lead Length:
- 18 in
- Enclosure:
- BAPI-Box 2 (BB2)
- Enclosure Rating:
- IP66, NEMA 4
- Probe Material:
- 304 Stainless Steel
- Termination Option:
- Standard (Flying Leads)
- Mounting Style:
- Strap-On / Bracket / Thermowell
- Calibrated Range:
- -7 to 49C
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