Fieldpiece AMN2 User Manual

Manometer Accessory Head Model: AMN2
OPERATOR’S MANUAL
Description
The AMN2 adds static pressure measurements to the function of a gas pressure instrument, all for the price of a low cost gas pressure measuring meter. For gas pressure, the AMN2 measures up to 60 inches water column (“WC) with a resolution of
0.1 "WC when used with any Fieldpiece meter. For static pressure measurements, which are much lower than gas pressure, use the 0.01"WC resolu­tion mode. Special purpose static pressure instru­ments are on the market with better accuracy and temperature compensation, but they typically cost much more than the AMN2.
Operation
1. Connect to COM and Volts jacks using
Fieldpiece test leads with removable probe tips.
For Fieldpiece “stick-style” meters, EHDL1, or
DL3, slide the head directly over the meter.
2. Select the mVDC range on the DMM.
3. On the AMN2, select 0.1 resolution for gas pres-
sure. For static pressure, typically below 2”WC,
select 0.01 resolution.
4. To zero the instrument, press the Zero Set but-
ton on the AMN2 just before taking the pressure
readings, while at ambient pressure.
5. Connect the hose to the AMN2.
6. Connect hose to the pressure being measured.
7. If using 0.01 mode, divide the reading displayed
on the LCD by 10. In other words, move the
decimal to the left one digit.
8. To disable the auto-power-off, remove the gray rubber strip and flip the switch below. Auto­power-off is helpful for conserving the battery; but if you are data logging with Fieldpiece model DL3, you will want to disable this feature.
9. 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
1. Screw the brass fitting into the pressure port on the regulator. Some ports require an adapter.
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, the manometer can hook into the inlet port in the same manner it can connect into the outlet port. If you have a dual-port manometer (ADMN2), you can check both the inlet and the outlet simultaneously and see the pressure drop across the regulator.
5. See manufacturer's specification for target inlet and outlet pressure for a given regulator or piece of combustion equipment.
Connect Your Way
EHDL1 HS series LT series
Fieldpiece Instruments, Inc.
A CALIFORNIA CORPORATION
www.fieldpiece.com
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.
Resolution Modes (0.1 and 0.01)
There are two modes of resolution on the AMN2. For most applications, 0.1 mode will be fine to use. When measuring low pressures (below 2”WC) 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 -0.05, your meter will show
-0.5.
Limited warranty
This meter is warranted against defects in mate­rial or workmanship for one year from date of pur­chase. Fieldpiece will replace or repair the defective unit, at its option, subject to verification of the defect.
This warranty does not apply to defects resulting from abuse, neglect, accident, unauthorized repair, alteration, or unreasonable use of the instrument.
Any implied warranties arising from the sale of a Fieldpiece product, including but not limited to implied warranties of merchantability and fitness for a particular purpose, are limited to the above. Fieldpiece shall not be liable for loss of use of the instrument or other incidental or consequential damages, expenses, or economic loss, or for any claim of such damage, expenses, or economic loss.
State laws vary. The above limitations or exclu­sions may not apply to you.
Obtaining service
Call Fieldpiece Instruments for one-price-fix-all warranty service pricing. Send check or money order for the amount quoted. Send the meter freight prepaid to Fieldpiece Instruments. Send proof of date and location of purchase for in-warranty serv­ice. The meter will be repaired or replaced, at the option of Fieldpiece, and returned via least cost transportation.
Manom
Acces
Ac
so
Head
0.1
0.01
0.01
(LCD/10)
Resolu
tion
ti
Ma
Manom
e
Acces
ces
sory
Head
0.1
0.01
(LCD/10)
Resolu
tion
on
Gas pressure measurement
(0.1”WC resolution mode)
Static pressure across a blower
(0.01”WC resolution mode)
0.5mVDC / 10 = 0.05”WC
v27
Manometer Accessory Head
Resolution
Converts 1” water column to 1mVDC or 10mVDC (selectable).
0.01
(LCD/10)
AMN2
ON
LO BATT
0.1
ON
OFF
Zero Set
AUTO OFF
ON
Manometer Accessory Head
LO BATT
0.1
ON
Resolution
OFF
0.01
(LCD/10)
Converts
ON
Manometer Accessory Head
Resolution
Converts 1” water column to 1mVDC or 10mVDC (selectable).
1” water column to 1mVDC or
LO BATT
10mVDC (selectable).
0.1
ON
OFF
0.01
(LCD/10)
AUTO OFF
AMN2
AUTO OFF
Zero Set
AMN2
ON
Manometer Accessory Head
Resolution
Converts 1” water column to 1mVDC or 10mVDC (selectable).
LO BATT
0.1
ON
OFF
0.01
(LCD/10)
Zero Set
AUTO OFF
AMN2
Zero Set
0.1
0.01
(LCD/10)
ON
Manometer Accessory Head
LO BATT
0.1
ON
Resolution
OFF
0.01
(LCD/10)
Converts 1” water
Zero
column to
Set
1mVDC or 10mVDC (selectable).
AUTO OFF
3.0 inWC
AMN2
To Meter
3.0 mVDC
0.1
After
Zero
Blower
Set
ON
Manometer Accessory
0.01
(LCD/10)
Head
Resolution
Converts 1” water column to 1mVDC or 10mVDC (selectable).
0.1
0.01
(LCD/10)
AMN2
To Me ter
AUTO OFF
LO BATT
ON
OFF
Zero Set
2nd
1st
0.5 mVDC
0.05 inWC
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.
Outlet Pressure
Tap Screw
Outlet
Pressure
Boss
Inlet Pressure Tap Screw
Smaller end (3/16”) of the adapter connects to AMN2 tubing. Remove the installed brass fitting from tube so the adapter can be inserted.
Inlet Pressure Boss
Adapter
(5/16” to 3/16”)
Adapter Tube
(5/16”)
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AAV3 Air Velocity and Temperature
ADMN2 Dual-Port Manometer
AVG2 Digital Vacuum Gauge
AOX2 Combustion Check
Air Velocity & Temperature Head
English
READLOBATT
ON
LCDX
100
Average
(16sec)
Metric
Real time
AAV3
AUTO­OFF
English Metric
Ft/min M/s
KM/hrMPH ºF ºC
OFF
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CLAMP
300V
CAT.III
400A
AC Current Clamp
!
1AAC / 1mVAC 400AAC MAX
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AirVelocit
&Temperature
Head
O N
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1
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R
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AAV3
P1 P2
ON
Dual-Port
ON
Manometer Accessory
Lo Batt
Head
0.1 ENGLISH
Resolution
0.01 METRIC
(LCD/10)
P1-P2
P2 P1
AUTO
ZERO
OFF
ADMN2
Combustion Check
Lo Batt
STABLE
GAS
Fuel Type
OIL
TEMP
%CO
2
%O
2
AUTO
T/C
°C °F
CAL
OFF
AOX2
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