Manometer Accessory - AMN2

The AMN2 dual port manometer measures gas pressure and static pressure.User's Manual

Package Art

Features and Benefits

Competitive Advantages

What's Included?

Recommended

Specifications

 

 

 

 

What is It?

The AMN2 is a manometer accessory head for use with our modular multimeters (DMMs) and instruments. It measures gas pressure with enough resolution to measure static pressure. The AMN2 includes a zero adjust and the Auto Power-Off (APO) function to conserve battery life. Disable APO for data logging.  The AMN2 measures pressure between -60inWC and 60inWC (inches of water column). Take static pressure measurements using the resolution mode of 0.01inWC. 

How Does it Work?

Use the AMN2 to measure gas pressure or static pressure.  Simply connect to COM and Volts jacks on your meter using any Fieldpiece test leads with removable probe tips. For Fieldpiece “stick-style” meters, adapters and handles, slide the head directly onto the unit.  Select the mVDC range on your meter.  Press the ZERO Set button on the face of the AMN2. ZERO while the tube is disconnected to calibrate the meter to ambient pressure.  Connect the hose to the pressure source to get the gauge pressure relative to the ambient or ZERO pressure.  Note: 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.

Auto Power-Off is helpful for conserving the battery; but if you are data logging with Fieldpiece model DL3, you will want to disable this feature.  To disable the auto-power-off, remove the rubber covering and flip the switch below to the off position.
AMN2-with-GMan-v01-copy AMN2-with-blower-v01
Gas pressure measurement
(0.1”WC resolution mode)		 Static pressure across a blower
(0.01”WC resolution mode)
0.5mVDC / 10 = 0.05”WC)

Checking Gas Pressure on a Regulator
Measure gas pressure and test regulators quickly with the AMN2 manometer.

  1. Screw the brass fitting into the pressure port on the regulator.
  2. Put unit into operation (i.e. turn on the furnace and have furnace ignite, as if running it in normal operation.)
  3. This will give you the pressure coming out of the regulator.
  4. 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. If you have a dual-port manometer (model ADMN2 or SDMN5), you can check both the inlet and the outlet pressures simultaneously and see the pressure drop across the regulator.
  5. See manufacturer's specification for the specifications on target inlet and outlet pressure for a given regulator or piece of combustion equipment.


Field Pressure Calibration
Press and hold the ZERO Set button on the face of the AMN2.  Disconnect the hose from the pressure port to properly calibrate to ambient pressure.  To take static pressure measurements quickly across a blower as in the diagram example, press ZERO Set button while you are connected to the pressure source before the blower then connect to the pressure source after the blower and take your reading.  

Resolution Modes (0.1 and 0.01)
There are two modes of resolution on the AMN2. The 0.1 mode is useful for most applications. When measuring low pressures, 0.01 will likely be the best mode for meaningful testing. The most common circumstance for 0.01 mode is measuring static pressure across a blower. Only when using 0.01 mode, the display of your meter will show the true measurement X 10. So if the true measurement is -0.02, your meter will show -0.2. This is done to optimize resolution.

RMA316-wit-text-AMN2

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

  1. Shut off main gas supply to furnace.
  2. Move the gas valve switch to "OFF" position.
  3. Use a 3/32" hex wrench to loosen the outlet pressure tap screw. Rotate screw counterclockwise one revolution to open.
  4. Connect the AMN2 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.
  5. 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.






Features and Benefits

The AMN2 Manometer Accessory Head offers several features and benefits to field technicians:
  • Works with any Fieldpiece expandable instrument or handle or any DMM with mVDC ranges.
  • Measure gas pressure on 3/16” and 5/16” regulator ports.
  • Enough resolution and sensitivity to measure static pressure.
  • ZERO Set on face of instrument.
  • Auto Power-Off (APO) for data logging pressure.
  • Low battery LED indicator.

 

Competitive Advantages

The modular design of the AMN2 gives it a distinct advantage over other dual-port manometers in the field.  Remoting the AMN2 with our detachable test leads allows you to measure  and log pressure readings in hard to reach places.  The included 3/16” to 5/16” adapters allow you to measure gas pressure on more makes and models of gas appliances as well.

What's Included


  • Manometer Accessory - AMN2
  • 1 – 3/16” tubes with brass fitting
  • 1 – 3/16” to 5/16” tube adapter - RMA316
  • 9V battery (installed)
  • Operator’s manual

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Recommended Accessories and Replacement Parts

Technicians who like the AMN2 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.

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 Electronic Handle - EHDL1

Convert any Fieldpiece accessory head instrument into a standalone with the Electronic Handle model EHDL1. It features a MAX/MIN button to record the highest and lowest reading. And a HOLD button to hold the reading. The EHDL1 has a 200 and 2000 mVAC for use with our Amp Clamp, model ACH4 and the 200 and 2000mVDC range is for use with the rest of our accessory head instruments.

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ADMN2-SRC-product-tmb

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.

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Dual-Port Manometer - SDMN5

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.

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Specifications

TECHNICAL SPECIFICATIONS
Pressure Ports: Tube connector for 3/16 inch (4mm) I.D. flexible tubing
Units of Measure: inches of water column (“WC)
Accuracy: @ 73°F, <90%RH, ±0.4rdg (-20 to 20”WC), applied before dividing reading by 10 on 2”WC range, ±1.0rdg (-60 to -20”WC and +20 to +60”WC)
Resolution: 0.1 or 0.01 depending on resolution selected (If 0.01”WC resolution is selected you must divide displayed value by 10 for actual value).
Measurement Range: -60.0”WC to 60.0”WC
Operating environment: 32ºF (0°C) to 105ºF (41°C), 15-90%RH
Compatible media: Dry, non-corrosive gases
Battery: Single standard 9-volt battery, NEDA 1604, JIS 006P, IEC 6F22.
Battery Life: 150 hours, low battery LED indicator on accessory head.
Overrange: “OL” or “-OL” is displayed.
Auto power off: 15 minutes
Dimensions: ~5 3/16”(131mm) (H) x ~2 7/16”(67mm) (W) x ~1 1/4”(32mm)(D)
Weight: approximately 154g (~1/2 pound) including battery
Accessories included: 2’ (3/16”) I.D. flex tubing w/ typical gas pressure fitting, operators manual, battery (installed), 5/16” adapter with tube.