The A-22D-A05 is a Belimo duct mounting flange for 6 mm probe-style temperature sensors. The brass flange holds the cable probe securely in a sheet-metal duct wall with two surface-mount screws, providing a clean exterior penetration and a friction-locking probe grip that maintains alignment over the life of the installation. Rated for continuous exposure up to 260°C [500°F] for higher-temperature applications such as process exhaust or industrial duct work.
Designed for the Belimo 01CT, 22DC, 22DT, 22DTH, 22DTM, and any other Belimo cable or duct sensor with a 6 mm (0.24") probe diameter. Use the brass flange when the duct or surrounding ambient temperature exceeds 120°C (248°F) — process exhaust, high-temperature exhaust ducts, industrial drying tunnels.
Key Features
Mounts to sheet-metal duct walls with two #8 self-tapping screws (not included; use installer-supplied screws sized to duct gauge). The mounting holes are on a 50 mm (1.97") center-to-center spacing. Footprint: 69.6 mm (2.74") long × 46 mm (1.81") wide.
The center bore accepts the 6 mm probe and grips it with a captured fastener that you tighten after inserting the probe to the desired depth. The grip maintains probe position against duct vibration without crushing the probe sheath. Probe can be repositioned or removed for service without removing the flange from the duct.
Brass body rated for continuous exposure up to 260°C [500°F]. The brass body handles process exhaust temperatures that would soften polymer alternatives. Use for industrial drying, exhaust monitoring, and high-temperature airstreams.
Technical Specifications
| Specification | Detail |
|---|---|
| Type | Duct mounting flange for 6 mm probe sensors |
| Material | Brass |
| Maximum Temperature | 260°C [500°F] |
| Probe Diameter | 6 mm (0.24") |
| Mounting Hole Spacing | 50 mm (1.97") center-to-center |
| Flange Footprint | 69.6 mm × 46 mm (2.74" × 1.81") |
| Mounting Hole Diameter | 4 mm (0.16") |
| Probe Bore Diameter | 6.3 mm (0.24") |
| Mounting Method | Surface-mount via 2 screws (screws not included) |
| Manufacturer | Belimo |
| Manufacturer Part Number | A-22D-A05 |
| Warranty | 5-year factory warranty |
Documentation
Frequently Asked Questions
What sensors is the A-22D-A05 compatible with?
All Belimo cable or duct temperature sensors with a 6 mm (0.24") probe diameter — the 01CT family, 22DC, 22DT, 22DTH, 22DTM, and others. Belimo standardizes on 6 mm probes across these lines so the same flange works for all.
How is it mounted to the duct?
Two surface-mount holes on 50 mm (1.97") centers — use installer-supplied self-tapping screws sized to your duct gauge (typically #8). Drill a clearance hole for the probe (about 7 mm / 9/32") in the center of the mounting pattern, insert the probe through the flange and into the duct, then tighten the captured fastener at the flange center to grip the probe.
Why choose the brass flange?
Choose the brass A-22D-A05 (this SKU) when duct or ambient temperatures could exceed 120°C (248°F) — typical HVAC duct air doesn't need it, but process exhaust, industrial drying tunnels, and high-temperature exhaust applications do. For standard HVAC, the plastic A-22D-A03 is a lower-cost alternative.
- Sensor Type:
- Duct Mounting Flange
- Compatible Probe:
- 6 mm (0.24)"
- Material:
- Brass
- Max Temperature:
- 260°C [500°F]
- Mounting Method:
- Surface-mount, 2 screws
- Mounting Hole Spacing:
- 50 mm (1.97) c-to-c"
- Footprint:
- 69.6 mm x 46 mm
- Compatible Sensors:
- 01CT / 22DC / 22DT / 22DTH / 22DTM (6mm probe)
