Dual-Port Manometer

Dual-Port Manometer - SDMN5

What is It?

The SDMN5 is a portable, rugged dual-port manometer designed especially for HVAC/R field service technicians. Measures gas pressure, static pressure and pressure differential. The SDMN5 includes a zero adjust button of the face of the meter, a rugged rubber boot, a magnet on the back for hanging the meter during service, and the Auto Power-Off (APO) function conserves battery life. The SDMN5 measures pressure between -60inWC and 60inWC (inches of water column) and -150.0 to 150.0 mBar. The SDMN5 also measures P1 or P2 pressure readings and calculates the difference between P1 and P2. Take static pressure measurements using the resolution mode of 0.01inWC or 0.01mBar. Includes 3/16” to 5/16” adapter for measuring gas inlet and outlet pressures.

How Does it Work?

Use the SDMN5 to measure gas pressure, static pressure and pressure differential. Simply turn it on, press the ZERO button to calibrate to ambient pressure, and then use the meter as you wish to perform the following tasks:

Connect a single hose to get the gauge pressure relative to the ambient or ZERO pressure.
Connect both hoses if you want to see relative pressure, P1 minus P2. Select P1, P2, or P1 - P2.

Then select English (inches of water column) or Metric (mBar) units. If you are in an environment where the temperature is noticeably changing while you are taking your reading, disconnect the meter from the hoses and ZERO it relative to ambient pressure before each reading.

Checking Gas Pressure on a Regulator
Measure gas pressure and test regulators quickly with the SDMN5 dual-port manometer.

Screw the brass fitting into the pressure port on the regulator.
Put unit into operation (i.e. turn on the furnace and have furnace ignite, as if running it in normal operation.)
This will give you the pressure coming out of the regulator.
If you suspect high or low inlet pressure into the regulator, hook the manometer up to the inlet port in the same manner you connect to the outlet port. You can check both the inlet and the outlet simultaneously and see the pressure drop across the regulator if you connect both tubes at the same time.
See manufacturer's specification for the specifications on target inlet and outlet pressure for a given regulator or piece of combustion equipment.

Field Calibration
By pressing the ZERO button, both the P1 and P2 are zeroed to the pressure they are being exposed to. For this reason the calibration should be done when both P1 and P2 are disconnected from the hoses.
SDMN5_adapter_inlet_outlet

Using the RMA316 Manometer Adapter
Used for 5/16" pressure outlet ports.

Shut off main gas supply to furnace.
Move the gas valve switch to "OFF" position.
Use a 3/32" hex wrench to loosen the outlet pressure tap screw. Rotate screw counterclockwise one revolution to open.
Connect the SDMN5 tubing to the smaller (3/16") end of the adapter and the other (5/16") end of the adapter into the of the adapter tube.
Slide the 5/16" adapter tube over the outlet pressure boss (port) to seal. Overlap the pressure boss by at least 3/8" to prevent leakage.

Battery Check Function
Press and hold the UNIT button to display the percentage of usable battery remaining. This function can be used any time the meter on.

Competitive Advantages

The SDMN5 evolved as a result of testing pressures in the field for 20 years. Its range and resolution allow you to measure the HVAC applications you run into everyday in HVAC/R field service. Measure gas pressure on the inlet and outlets with the standard 3/16” fittings or the included adapters for 5/16” ports, take static pressure measurements across a blower and get the pressure differential with the push of a button to check drafts. Whether you’re holding the ergonomic standalone shape in your hand or hang the SDMN5 on the unit with the magnetic hanger to fill out a work order, the SDMN5 make HVAC/R field service easier and faster, with less fatigue than the other guys.

What's Included

Dual-Port Manometer - SDMN5
2 – 3/16” tubes with brass fittings
2 – 3/16” to 5/16” tube adapters - RMA316
9V battery (installed)
Operator’s manual

Recommended Accessories and Replacement Parts

Technicians who like the SDMN5 may also enjoy these instruments and accessories:

	Expandable True RMS Stick Multimeter with Backlight - HS36 Our top of the line True RMS Stick Meter, the HS36 includes the ranges you use everyday for HVAC/R field service plus includes a bright blue backlight and True RMS. Like the rest of the HS30 series, the HS36 comes equipped with a magnetic hanger, along with detachable silicone test leads and alligator clip probe tips for remote and easy one-handed testing, as well as the full set of built-in safety features. This auto-ranging stick meter also includes a bar graph on the LCD for an analog feel. Technicians who prefer our expandable stick meters tell us this is the best digital multimeter for HVAC/R field Service. Read More..
	Dual-Port Manometer Accessory – ADMN2 The ADMN2 is a portable dual port manometer accessory head for use with our modular multimeters (DMMs) and instruments. Measures gas pressure, static pressure and pressure differential. The ADMN2 includes a zero adjust and the Auto Power-Off (APO) function conserves battery life. Disable APO for data logging. The ADMN2 measures pressure between -60inWC and 60inWC (inches of water column) and -150.0 to 150.0 mBar. The ADMN2 also measures P1 or P2 pressure readings and calculates the difference between P1 and P2. Take static pressure measurements using the resolution mode of 0.01inWC or 0.01mBar. Read More..
	Superheat and Subcooling for A/C and Refrigeration - SSX34 The Fieldpiece Superheat and Subcooling for Air Conditioning and Refrigeration meter, model SSX34, measures suction line, or low side, line temperature and pressure. It then calculates actual superheat in real time using built-in P/T charts. It also measures liquid line, or high side, temperature and pressure, and calculates actual subcooling. Use it to get actual superheat on R-22, R-410A, R-134A, and R-404A fixed orifice systems and actual subcooling on TXV / TEV regulated systems. Use the “T” fitting to charge to actual superheat or subcooling by putting the SSX34 in-line between your refrigerant bottle and the system. Read More..
	Deluxe Meter Case – ANC1 The Deluxe Meter Case, model ANC1, easily holds 1 meter and 2 accessory head instruments. Features include rugged nylon construction, padding, durable pockets inside and out, a rugged double zipper and a shoulder strap. The ANC1 comes standard with our HS30 Series Stick Multimeters. Read More..

Specifications

TECHNICAL SPECIFICATIONS
Accuracy: Stated accuracy at 0 to 50°C (32 to 122°F): ±1.5% FS
Battery: Single standard 9-volt battery, NEDA 1604, JIS 006P, IEC 6F22.
Battery Life: 200 hours with low battery indicator on display.
Operating environment:
32ºF (0°C) to 122ºF (50°C)
Compatible Media: Dry, non-corrosive gases
Overrange: “OL” or “-OL” is displayed.
Auto-Off power: 15 minutes
Low Battery: symbol is displayed.
Dimensions: 180mm(~7 1/16”)(H) x 60mm(~2 3/8”)(W) x 30mm(~1 3/16”)(D)
Weight: approximately 195g (~1/2 pound) including battery

Pressure
Pressure Ports: tube connectors for 5mm (~3/16 inch) I.D. flexible tubing
Units of Measure: inWC, mmWC, mbar, PSI
Resolution: 0.01 inch WC (0.1mmWC, 0.01mBar)
Accuracy: ±1.5% FS
Measurement Range:
In WC: 0.00 to ±60.0
mm WC: 0.0 to ± 1500
mBar: 0.00 to ±150.0
PSI: 0.000 to ±2.000

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