The BAPI BA/ZPMB-SR-AT-D-BB is a field-configurable Zone Pressure Multi-Sensor (ZPM) in BAPI’s IP66-rated BAPI-Box enclosure. This is the Standard Range model with ten field-selectable pressure ranges up to ±5.00” WC (five unidirectional and five bidirectional, switchable via DIP switch SW8) and three field-selectable outputs (4 to 20 mA, 0 to 5 VDC, or 0 to 10 VDC). Output, range, units (inches WC or Pascals), response time, and direction are all set via DIP switches without powering the unit. This configuration ships complete with the attached 6” aluminum static pressure probe and an LCD display that shows live pressure for quick commissioning and troubleshooting.
Five Switch-Selectable Ranges
DIP switches SW3–SW5 select between five standard range pressure ranges up to 0 to 5.00” WC. Switch SW6 toggles inches WC or Pascals, and SW8 switches between unidirectional and bidirectional operation. No re-ordering, no re-stocking, no re-calibration for range changes.
Three Output Types, One SKU
Switches SW1 & SW2 select 4 to 20 mA, 0 to 5 VDC, or 0 to 10 VDC output. Powered from 13–40 VDC (4-20 mA) or 7–40 VDC / 18–28 VAC (VDC outputs). Load resistance 850Ω max at 24 VDC for current output, 6 kΩ min for voltage output.
Display + Probe Ready to Install
Ships with the 6” aluminum static pressure probe pre-attached via tubing with surge damper, plus an LCD display that reads live pressure regardless of the selected range. Three face-mounted LEDs provide Out-of-Range Low / In-Range / Out-of-Range High status from across a mechanical room.
Specifications
| BA/ZPMB-SR-AT-D-BB Zone Pressure Multi-Sensor | |
|---|---|
| Model | BA/ZPMB-SR-AT-D-BB |
| Range Class | Standard Range (Bi-Directional, switchable to Unidirectional via SW8) |
| Selectable Outputs | 4 to 20 mA / 0 to 5 VDC / 0 to 10 VDC (DIP-switch selectable) |
| Display | LCD display shows live pressure regardless of selected range |
| Static Probe | Attached 6” aluminum static pressure probe (included) |
| Accuracy | ±1.0% FS, 32 to 104°F (0 to 40°C), or ±0.1” WC (±24.9 Pa) |
| Total Error Band | ±0.5% FS or ±0.05” WC (±12.44 Pa) |
| Temp Hysteresis & Stability | ±1% FS per year |
| Overpressure | Proof 300” WC (74 kPa) |
| Power (4-20 mA) | 13 to 40 VDC |
| Power (0-5 VDC) | 7 to 40 VDC or 18 to 28 VAC |
| Power (0-10 VDC) | 13 to 40 VDC or 18 to 28 VAC |
| Power Consumption | 20 mA max DC (4-20 mA); 7 mA max DC or 0.58 VA max AC (VDC outputs) |
| Load Resistance | 4-20 mA: 850Ω max @ 24 VDC | Voltage: 6 kΩ min |
| Wiring | 3 wires (2 wires for 4-20 mA output) |
| Port Size | 1/4” barb (6.3 mm) |
| Media | Clean, dry, non-corrosive gases |
| Operating Temp | -4 to 140°F (-20 to 60°C) |
| Storage Temp | -40 to 185°F (-40 to 85°C) |
| Humidity | 0 to 95% RH, non-condensing |
| Dimensions | 4.11” W × 5.49” H × 2.50” D (104.4 × 139.4 × 63.5 mm) |
| Conduit Entry | 1/2” NPSM threaded port with 1/2” drillable knockout |
| Enclosure Material | UV-resistant polycarbonate, UL94 V-0 |
| Enclosure Rating | IP66, NEMA 4 (cover latch screws required) |
| Agency | CE EN 61326-1:2013 EMC (Industrial Electromagnetic Environment), RoHS |
| Warranty | 5-year BAPI manufacturer warranty |
Field-Selectable Standard Range Pressure Ranges
| Inches WC | Pascals |
|---|---|
| 0 to 1.00 | 0 to 250 |
| 0 to 2.00 | 0 to 300 |
| 0 to 2.50 | 0 to 500 |
| 0 to 3.00 | 0 to 1,000 |
| 0 to 5.00 | 0 to 1,250 |
| -1.00 to 1.00 | -250 to 250 |
| -2.00 to 2.00 | -300 to 300 |
| -2.50 to 2.50 | -500 to 500 |
| -3.00 to 3.00 | -1,000 to 1,000 |
| -5.00 to 5.00 | -1,250 to 1,250 |
Frequently Asked Questions
How do I select bidirectional vs. unidirectional mode on the BA/ZPMB-SR-AT-D-BB?
DIP switch SW8 selects direction. In bidirectional mode a nominal 1” range becomes −1” to +1”; in unidirectional mode the same setting becomes 0” to +1”. Always perform the auto-zero procedure after changing SW8 or any other configuration switch.
What is included with this attached-probe (-AT) variant?
The BA/ZPMB-SR-AT-D-BB ships with the BAPI-Box pressure sensor, a 6” aluminum static pressure probe connected via tubing and a bulkhead fitting, a surge damper on the probe tube, four self-tapping mounting screws, cover latch screws, and deadhead tubing for the auto-zero procedure.
What does the LCD display show, and does it depend on the selected range?
The LCD displays actual measured pressure continuously, in the selected units (inches WC or Pascals), regardless of which of the five pressure ranges is currently selected. This is independent of the output scaling and is specifically useful for troubleshooting controller scaling and verifying auto-zero.
- Output Signal:
- 4-20 mA, 0-5 VDC, or 0-10 VDC
- Pressure Type:
- Differential
- Pressure Ranges:
- 0 to 5 Inch
- Media:
- Dry
- Accuracy:
- 1.00%
- LCD Display:
- LCD Display
- Zero Function:
- Yes
- Range Setting:
- Adjustable
- Communication:
- None
- Series:
- ZPM Series
