The BAPI BA/ZPMB-LR-AT-ND-BB is a field-configurable Zone Pressure Multi-Sensor (ZPM) in BAPI’s IP66-rated BAPI-Box enclosure. This is the Low Range model with ten field-selectable pressure ranges up to ±1.00” 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 in a cost-optimized configuration without the optional LCD display.
Five Switch-Selectable Ranges
DIP switches SW3–SW5 select between five low range pressure ranges up to 0 to 1.00” 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.
Attached Probe + Line-of-Sight LEDs
Ships with BAPI’s 6” aluminum static pressure probe pre-attached via tubing with surge damper — a complete duct assembly in one SKU. Three face-mounted status LEDs indicate Out-of-Range Low / In-Range / Out-of-Range High for the configured range.
Specifications
| BA/ZPMB-LR-AT-ND-BB Zone Pressure Multi-Sensor | |
|---|---|
| Model | BA/ZPMB-LR-AT-ND-BB |
| Range Class | Low 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 | No display (status LEDs only) |
| Static Probe | Attached 6” aluminum static pressure probe (included) |
| Accuracy | ±1.0% FS, 32 to 104°F (0 to 40°C), or ±0.02” WC (±4.98 Pa) |
| Total Error Band | ±1.25% FS or ±0.025” WC (±6.22 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 Low Range Pressure Ranges
| Inches WC | Pascals |
|---|---|
| 0 to 0.10 | 0 to 30 |
| 0 to 0.25 | 0 to 50 |
| 0 to 0.50 | 0 to 100 |
| 0 to 0.75 | 0 to 175 |
| 0 to 1.00 | 0 to 250 |
| -0.10 to 0.10 | -30 to 30 |
| -0.25 to 0.25 | -50 to 50 |
| -0.50 to 0.50 | -100 to 100 |
| -0.75 to 0.75 | -175 to 175 |
| -1.00 to 1.00 | -250 to 250 |
Frequently Asked Questions
How do I select bidirectional vs. unidirectional mode on the BA/ZPMB-LR-AT-ND-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-LR-AT-ND-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.
Can an LCD display be added to the BA/ZPMB-LR-AT-ND-BB later?
No, the display is factory-fitted. If on-board pressure readout is required, order the corresponding –D model: BA/ZPMB-LR-NT-D-BB (no probe, with display) or BA/ZPMB-LR-AT-D-BB (attached probe, with display). Three face-mounted status LEDs are still included on the no-display unit for basic in-range indication.
- Output Signal:
- 4-20 mA, 0-5 VDC, or 0-10 VDC
- Pressure Type:
- Differential
- Pressure Ranges:
- 0 to 1 Inch
- Media:
- Dry
- Accuracy:
- 1.00%
- LCD Display:
- LCD Display
- Zero Function:
- Yes
- Range Setting:
- Adjustable
- Communication:
- None
- Series:
- ZPM Series
