Who it’s for: Licensed HVAC/R techs, apprentices and contractors who need a fair dinkum dual-port manometer for gas, static and differential pressure—with a built-in pump to test and calibrate pressure switches. It’s quick, accurate and built for Aussie conditions, so jobs get signed off with no dramas.

Key Features & Trade Benefits

• ±60 inWC range (0.1 inWC resolution) – Covers typical natural gas/LPG inlet & outlet pressures so you can verify regulator settings fast and cut call-backs.
• Built-in variable pump – Simulates draft to test and calibrate pressure switches on furnaces and heaters; less guesswork, safer outcomes.
• Differential readings (P1-P2) always visible – Diagnose pressure drops across filters, coils and dampers without menu diving.
• Static pressure resolution down to 0.010 inWC – See small airflow changes during balancing and commissioning for better comfort complaints handling.
• Four units: inWC, mmWC, mbar, psi – Speak the same language as the spec sheet and setpoints on mixed fleets.
• Zero, Hold & Auto-Power-Off – Stabilise readings, lock them for notes, and save batteries on long days.
• Continuity leads + “Closed” LED – Watch the pressure switch open/close in real time while you control induced vacuum.

Why This Product Matters

On a chilly Melbourne service call, the inducer would spin up but the heater kept locking out. With the SDMN6 we induced a controlled vacuum, watched the Closed LED snap on, and captured the switching pressures. The culprit? A drifted adjustable switch. Two turns on the adjuster to manufacturer spec and the unit was back heating before smoko. That’s the difference: quicker diagnostics, safer operation, and fewer after-hours revisits.

Level up your commissioning kit with our Manometers collection for more options that suit your workflow.

Pro Tip

Zero with hoses attached before low-pressure measurements, keep the two hoses to the switch the same length, and use Auto-Capture (HOLD) to snag the exact open/close pressures while you tweak the pump speed.

Compatibility & System Info

• Media: Dry, non-corrosive gases (natural gas, LPG, air/draft)
• Functions: Gas pressure, static pressure, differential (P1-P2), pressure-switch testing & calibration
• Units: inWC, mmWC, mbar, psi
• Use cases: Furnaces, room heaters, makeup air, duct static checks, airflow restrictions

What’s Included

• SDMN6 – Dual Port Manometer & Pressure Switch Tester
• ANC1 – Four-Pocket Carry Case
• ASP2s – Static Pressure Probes
• RMA316 – Pressure Tubes
• Quick-Connect Leads, Hoses & Y-splitter
• Hoses with Brass Screw Fittings

Specifications

FAQs

Can I use SDMN6 for both LPG and natural gas?

Yes. It reads up to ±60 inWC with 0.1 inWC resolution for gas checks. Always follow appliance manufacturer setpoints.

Can it help with airflow issues?

Yes. Use the ASP2 static probes to measure supply/return static and P1-P2 across filters/coils.

How do I capture exact open/close pressures?

Enter TEST mode, ramp the pump, and use HOLD (Auto-Capture). The display latches when continuity changes.

Does Auto-Power-Off get in the way?

You can disable APO by holding the P1/P2 key while powering on. Handy during longer balancing sessions.

What is the difference between the SDMN5 and SDMN6?

The SDMN5 is the simpler dual-port manometer for pressure reading. The SDMN6 adds a built-in air pump for pressure-switch calibration work.

Related Products

• Fieldpiece ASP2 Static Pressure Probes – Spare probes for faster duct static checks on commissioning.
• Fieldpiece JL3KM2 Wireless Manometer Kit – View return/supply/total external static on your phone for smarter air balancing.
• Fieldpiece ANC1 Four-Pocket Case – Keep your SDMN6, probes and leads organised between jobs.
• HVAC Air Balancing: Tools & Steps – Practical read on using manometers in balancing workflows.

Compliance & Technical References

For official specs and usage guidance, see the Fieldpiece SDMN6 official page and the Operator Manual. Gas appliance work must be carried out by appropriately licensed trades under Australian state and territory requirements.