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  User's Manual
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Competitive Advantages
What's Included?
Recommended
Specifications
What is It?
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 to conserve 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.
How Does it Work?
Use the ADMN2 to measure gas pressure, static pressure and pressure differential. 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. Remove the rubber strip on the face of the ADMN2 to access the ZERO button. Press the ZERO button while the tubes are disconnected to calibrate the meter to ambient pressure. 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. To disable the auto-power-off, remove the rubber covering and flip the switch below. 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. 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 ADMN2 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 Pressure Calibration
Remove the rubber strip on the face of the ADMN2 covering the ZERO button. Press the ZERO button to zero both the P1 and P2 to ambient pressure. Disconnect the hoses from P1 and P2 to properly calibrate to ambient pressure.
Resolution Modes (0.1 and 0.01)
There are two modes of resolution on the ADMN2. 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.
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 ADMN2 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.
Competitive Advantages
The modular design of the ADMN2 gives it a distinct advantage over other dual-port manometers in the field. Remoting the ADMN2 with our detachable test leads allows you to measure pressure 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
- Dual-Port Manometer Accessory - ADMN2
- 2 – 3/16” tubes with brass fittings
- 2 – 3/16” to 5/16” tube adapters - RMA316
- 9V battery (installed)
- Operator’s manual
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Recommended Accessories and Replacement Parts
Technicians who like the ADMN2 may also enjoy these instruments and accessories:
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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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Classic Style Digital Multimeter with Temperature - LT17A
The LT17A is the classic style meter the boss calls the biggest “Bang for the Buck”. He’s got a point. This manual ranger covers most of the parameters and ranges you need for most HVAC/R applications. The LT17A meter measures current, resistance, voltage, capacitance, frequency, continuity, and temperature. Test leads store in the meter body and, with the probe tips removed, connect the LT17A to Fieldpiece accessory heads. The body is made out of durable ABS plastic and comes with a bright blue backlight for poorly lit test areas. Get great accuracy using the included k-type thermocouple and an easily accessible temperature calibration pot.
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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.
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Specifications
TECHNICAL SPECIFICATIONS
Pressure Ports: Two tube connectors for 4mm (3/16 inch) I.D. flexible tubing
Units of Measure: inWC and mBar
Accuracy: ±1.5% FS 0 to 50°C (32 to 122°F):
Resolution: 0.1 or 0.01 depending on resolution selected (If 0.01 resolution is selected you must divide displayed value by 10 for actual value).
Measurement Range: inWC: -60.0 to 60.0 mBar: -150.0 to 150.0
Operating environment: 32ºF (0°C) to 122ºF (50°C), under 75%RH
Compatible media: Dry, non-corrosive gases
Battery: Single standard 9-volt battery, NEDA1604, JIS 006P, IEC 6F22.
Battery Life: 100 hours with low battery LED indicator on accessory head.
Overrange: “OL” or “-OL” is displayed.
Auto power off: 15 minutes
Dimensions: 131mm(~5 3/16”)(H) x 67mm(~2 7/16”)(W) x 32mm(~1 1/4”)(D)
Weight: approximately 154g (~1/2 pound) including battery
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