BAPI · CO₂ TRANSMITTERS

BAPI 24/7 Duct & Rough-Service CO₂ Sensor

Duct and rough-service CO₂ transmitter family for demand-controlled ventilation and continuously occupied buildings.

Manufacturer: BAPI

Explosion protection: No Ex certification claimed. Do not treat IP protection or CE marking as ATEX / IECEx approval.

Verified Product Information

Measurement	CO₂
CO₂ ranges	0–2,000, 2,500, 5,000, 10,000 or 50,000 ppm options
Output	0–5 or 0–10 VDC

Official Manufacturer Source

Open manufacturer model / catalog information →

Electrical specifications, current availability, measurement claims and hazardous-area approvals depend on the actual configuration and revision. Verify the original manufacturer documentation before specifying equipment.

24/7 CO₂ — unusual 50,000 ppm upper range

BAPI’s 24/7 duct/rough-service CO₂ family includes 0–2,000 through 50,000 ppm concentration-span options. The 50,000 ppm variant serves a different measurement class than typical occupancy ventilation demand; choose the span for expected process/room exposure so low-end resolution is appropriate. Verify 0–5 or 0–10 V output scaling, duct insertion/exposure, source-air mixing and the maker calibration procedure. A rugged case does not establish an Ex-approved gas detector.

BAPI 24/7 Duct & Rough-Service CO₂ — constant-occupancy calibration — engineering specifications

Original maker documentation distinguishes the ordered hardware’s measured channels, outputs and qualified use cases. Optional feature lists do not establish that every product variant contains every sensor, controller or protocol.

Feature	OEM information	Engineering limits
Gas principle	Dual-channel NDIR optical CO₂ design for constantly occupied air spaces	Manufacturer positions this variant to avoid relying only on recurring fresh-air automatic baseline.
Separate ordered ranges	0–2,000, 0–2,500, 0–5,000, 0–10,000, 0–50,000 ppm	Range is selected by SKU; 50,000 ppm is not the default accuracy spec of a 2,000 ppm unit.
Output	Field-selectable 0–5 or 0–10 V DC	Do not state 4–20 mA or Modbus as standard for this family.
Pressure compensation	Continuous automatic barometric correction with integrated pressure sensor	Altitude/weather changes affect uncorrected NDIR ppm calculation.
Temperature compensation	Automatic compensation, application-dependent temperature limits	Duct airflow, enclosure thermal gradients and sampling aspiration matter.
Enclosure choices	Duct sampling tube or ventilated rugged service housing	An IP rating on unventilated housing cannot be copied to the ventilated version.
Status indication	Optional green/yellow/red LED for 0–2,000 ppm range variant	Threshold-colored LEDs are not occupational CO₂ safety alarms.

Commissioning and application guidance

This is a useful CO₂ model for continuously occupied facilities where an ordinary sensor’s automatic background calibration could drift because no fresh-air minimum occurs. Design the output scaling around the ordered 2k/2.5k/5k/10k/50k span. Provide proper placement in representative duct mixed flow or wall space, select the right enclosure and reference against a traceable CO₂ instrument during commissioning. BAPI references ASHRAE 62.1-2022 addendum ab for certain 2,500-ppm models; this does not itself certify an installed ventilation system.

Original manufacturer: Official model information, technical documents and configurator. Confirm final ordered SKU, supplied options and current data before control or safety-critical use.

AirAlign independent model-specific technical review · 25 October 2026. OEM technical claims are not third-party calibration or Ex/SIL approval.