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Description
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—too easy.
- 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 “she’ll be right” 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. It’s faster and more reliable than chasing live numbers.
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
Local note: In humid Brisbane plant rooms or dusty Adelaide roof spaces, check tubing for moisture/debris before testing—clean tubes keep readings honest.
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
| Pressure range | ±60 inWC (gas); differential P1-P2 displayed |
| Static pressure resolution | 0.010 inWC (useful up to about ±2 inWC) |
| Units | inWC, mmWC, mbar, psi |
| Accuracy | ±1.5% FS (0–50 °C) |
| Max pressure | 900 inWC (≈17.4 psi) – do not exceed |
| Power / battery life | 9 V alkaline; ~200 h (manometer), ~12 h (switch test @ typical pump) |
| Features | ZERO, HOLD, backlight, Auto-Power-Off (15 min, defeatable), continuity leads, “Closed” LED |
| Media | Dry, non-corrosive gases |
| Ports | P1, P2 (4.5–8 mm ID hose); PUMP (≈5 mm ID) |
| Warranty | 1 year |
Warranty & Returns
Backed by a 1-year manufacturer warranty. See our store Shipping & Returns policy for full terms before purchase.
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. For wireless, see the Job Link manometer kit below.
- 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—no more timing photos mid-test.
- 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.
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, safety and usage guidance, see Fieldpiece SDMN6 and the Operator Manual. For general refrigerant handling and licensing information in Australia, visit The Australian Government (Refrigerants).
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