The BAPI BA/TXS10[0 TO 100C]-I-10"-BB2 is an immersion temperature transmitter pairing a 1000 Ohm Platinum RTD (385 curve) sensing element with an on-board signal-conditioning circuit, delivering a 0-10V output (3-wire) calibrated for 0 TO 100C. The transmitter scales the temperature span to the full output swing - the low end of the range corresponds to output low (0V / 1V / 2V / 4 mA depending on output mode), the high end to output high. The voltage output is also field-selectable across 0-5V, 1-5V, 0-10V, and 2-10V via on-board jumpers, so the same SKU can be reconfigured to match a different controller input without re-ordering.
The probe is a 10 inch (254 mm) long, 0.25 inch OD 304 stainless steel assembly with a 1/2 inch NPSM nylon fitting for thermowell mounting; on hand-tightening the probe self-seats against the thermowell bottom. The transmitter is housed in the BAPI-Box 2 enclosure (NEMA 4 / IP66, UV-Resistant Polycarbonate, UL94 V-0) and wired for Flying Leads. Made in USA by BAPI of Gays Mills, Wisconsin.
Water-pipe, hydronic-loop, cooling-tower-sump, and tank temperature measurement on BAS controllers that need a 0-10V analog signal rather than a raw RTD resistance. Calibrated 0 TO 100C span suits applications where the working range falls within those endpoints (narrower ranges deliver higher resolution per degree). The probe fits a matching BAPI thermowell of the same length.
Key Features
Combines a Platinum 1000 Ohm RTD (385 curve, DIN43760) sensing element with a factory-calibrated transmitter on the same board. Eliminates the BAS R/T table lookup and external signal conditioner.
Voltage output is field-selectable across 0-5V, 1-5V, 0-10V, and 2-10V via on-board jumpers - this SKU ships factory-set to 0-10V.
Transmitter span is set at the factory to the indicated range. Lower end of temperature span = output low (0V / 1V / 2V / 4 mA); higher end = output high.
The plastic NPSM fitting allows the probe to slide up to 1.6 inch inside the enclosure as the unit is hand-threaded onto the thermowell - probe tip self-seats against the thermowell bottom on tightening. Hand-tight only; no thread sealant required on this side.
UV-Resistant Polycarbonate, UL94 V-0. Compact NEMA 4 polycarbonate enclosure with smaller footprint than BB.
Designed and manufactured by Building Automation Products, Inc. at 750 North Royal Avenue, Gays Mills, Wisconsin. RoHS / CE compliant.
Technical Specifications
| Specification | Value |
|---|---|
| Manufacturer | Building Automation Products, Inc. (BAPI) |
| Manufacturer Part Number | BA/TXS10[0 TO 100C]-I-10"-BB2 |
| Series | BAPI Immersion w/ Nylon Fitting (B40/B41) |
| Sensor Type | Active Transmitter (powered) |
| Sensing Element | 1000 Ohm Platinum RTD, 385 Curve (DIN43760) |
| Output Signal (Factory Set) | 0-10V |
| Output Topology | 3-wire |
| Output Selectability | Field-selectable 0-5V / 1-5V / 0-10V / 2-10V via jumper |
| Calibrated Temperature Range | 0 TO 100C |
| Power Supply | 24 VAC or 12-30 VDC, 3-wire |
| Probe Length | 10 inch (254 mm) |
| Probe Material | 304 Stainless Steel, 0.25 inch outer diameter |
| Probe Construction | Double-encapsulated sensing element with thermally-conductive potting |
| Process Fitting | 1/2 inch NPSM Plastic (Nylon) |
| Lead Wire | 22 AWG Stranded, Etched Teflon, Plenum Rated |
| Wiring Option | Flying Leads |
| Enclosure Model | BAPI-Box 2 |
| Enclosure Rating | NEMA 4 / IP66 |
| Enclosure Material | UV-Resistant Polycarbonate, UL94 V-0 |
| Enclosure Dimensions (H x W x D) | 4.9 x 2.8 x 2.35 inch (125 x 71.6 x 60 mm) |
| Enclosure Ambient Temperature | -40 to 185 degF (-40 to 85 degC) |
| Ambient Humidity | 0 to 100% RH, non-condensing |
| Mounting Method | Thermowell insertion (1/2 inch NPSM Plastic (Nylon), hand-tightened) |
| Agency Compliance | RoHS, CE (where applicable) |
| Country of Origin | Made in USA (Gays Mills, WI) |
Documentation
Mounting and probe-insertion instructions in 20907 apply to both passive and active variants since the probe / fitting / enclosure construction is identical. Active-transmitter wiring topology and output-mode jumper positions are shown on the wiring diagram inside the enclosure cover; the SS Double-Thread active install sheets (20919 / 37726) contain comparable transmitter-electronics detail.
Frequently Asked Questions
The active transmitter outputs a calibrated 0-10V analog signal directly proportional to temperature - the BAS reads the analog value and interprets it linearly across the calibrated span. A passive sensor outputs raw resistance which the BAS must convert using a sensor-specific R/T curve. Use the transmitter when (1) your controller doesn't have a built-in R/T table, (2) you want a longer cable run without lead-resistance error, or (3) the integrator wants to standardize on 4-20 mA / 0-10V analog signals.
This SKU is factory-calibrated for 0 TO 100C. The low end of that range corresponds to the output's low value (4 mA / 0V / 1V / 2V depending on output type); the high end corresponds to the output's high value (20 mA / 5V / 10V). Pick the narrowest span that comfortably brackets your expected working range - narrower spans give higher resolution per degree on the controller input.
The temperature span is factory-calibrated and not field-adjustable on standard transmitter SKUs. The voltage output, however, IS field-selectable - on-board jumpers let you switch between 0-5V, 1-5V, 0-10V, and 2-10V without re-ordering. This SKU ships factory-set to 0-10V.
This SKU uses the BAPI-Box 2 (NEMA 4 / IP66, UV-Resistant Polycarbonate, UL94 V-0). Compact NEMA 4 polycarbonate enclosure with smaller footprint than BB.
Yes. BAPI Immersion sensors and transmitters are designed and manufactured by Building Automation Products, Inc. at 750 North Royal Avenue, Gays Mills, Wisconsin (USA).
- Brand:
- BAPI
- Series:
- Immersion Nylon Fitting Transmitter
- Sensor Type:
- Active Transmitter
- Temperature Element:
- 1K Platinum RTD (385 Curve, internal)
- Output Signal:
- 0-10V
- Probe Length:
- 10 inch (254 mm)
- Probe Fitting:
- Nylon (1/2 inch NPSM Plastic)
- Calibrated Range:
- 0 TO 100C
- Enclosure:
- BAPI-Box 2
- Mount Position:
- Standard
- Enclosure Rating:
- NEMA 4 / IP66
- Wiring Configuration:
- Flying Leads
- Country of Origin:
- Made in USA