Page 1
General
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 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
Accuracy/Ranges:
inWC: ±0.02 on 0.00 to ±2.00
±1.5% FS on 2.00 to ±60.0
mmWC: ±0.5 on 0.00 to ±51.0
±1.5% FS on 51.0 to ±1500
mbar: ±0.05 on 0.00 to ±5.00
±1.5% FS on 5.00 to ±150.0
psi: ±0.001 on 0.000 to ±0.07
±1.5% FS on 0.07 to ±2.000
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 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.
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.
Warranty
The product is warranted to the original purchaser against defects in material or workmanship for a
period of one (1) year from the date of purchase.
During the warranty period, Fieldpiece Instruments
will, at its option, replace or repair the defective unit.
This warranty does not apply to defects resulting
from abuse, neglect, accident, unauthorized repair,
alteration, or unreasonable use of the instrument.
Any implied warranty arising out of the sale of
Fieldpiece's products including but not limited to
implied warranties of merchantability, and fitness for
purpose, are limited to the above. Fieldpiece shall
not be liable for incidental or consequential damages.
Service
Return any defective SDMN5 to Fieldpiece for
warranty service along with proof of purchase.
Contact Fieldpiece for out of warranty repair
charges.
Dual Port Differential
Manometer
Model: SDMN5
OPERATOR’S MANUAL
Description
The SDMN5 is a portable standalone dual port
manometer. The SDMN5 is capable of taking gas
pressure as well as static pressure. The SDMN5
comes in a rugged rubber boot. The SDMN5 also
has a zero adjust and a hold button to hold the currently displayed reading. The auto-power-off function conserves battery life, but can be disabled if
desired.
The SDMN5 will allow you to take gas pressure
up to ±60” (152cm) of WC. The SDMN5 will take differential pressure readings and display the difference between P1 and P2 at all times in the lower
right corner of the LCD. The SDMN5 also has four
different measurement scales including inches of
water column, millimeters of water column, mBar
and PSI. Static pressure is possible with the resolution to 0.01” of WC (0.1mmWC). Special purpose
static pressure instruments are on the market with
better accuracy and temperature compensation but
they typically cost many times more than the
SDMN5.
Operation
1. Zero SDMN5 by pressing the ZERO just before
taking the pressure readings, while at ambient
pressure. This will zero both P1 and P2. For
measurements less than 2inWC, take reading
within 1 minute after zeroing for best accuracy.
2. Connect a single hose to get the gauge pressure relative to the ambient or ZERO pressure.
3. Connect both hoses if you want to see relative
pressure, P1 minus P2.
4. By pressing the P1 / P2 button you can change
between displaying P1 or P2, P1 - P2 is constantly displayed in the lower right of the LCD.
5. Pressing the unit button makes it possible to
switch between the four measurement scales of
inches of water column (inWC), millimeters of
water column (mmWC), mBar, and PSI. The
scale being viewed is displayed on the right side
of the LCD.
6. To disable the auto-power-off hold the HOLD
button while turning the unit on. If the autopower-off is enabled (meter will turn off automatically) an APO will appear on the display. If
Auto-power-off is disabled (meter will not turn off
on its own), then no designation will appear on
the LCD.
7. If you are in an environment where the temperature is noticeably changing while you are taking
your reading, it is advised that you disconnect
the meter from the hoses and ZERO it relative
to ambient before each reading.
Checking Gas Pressure on a Regulator
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, 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,
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.
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.
Field Calibration
Pressure:
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.
T2
88.88
88.88
PRESS FOR 1 SECOND
AUTO-OFF BATTERY
CHECK
Gas pressure
measurement
Static pressure
across a blower
V15
Outlet Pressure
Tap Screw
Outlet
Pressure
Boss
Inlet Pressure
Tap Screw
Smaller end (3/16”) of the adapter
connects to SDMN5 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”)
P1
APO
88.88
HOLD
88.88
P1
P2
HOLD UNIT
AUTO-OFF BATTERY
ON/OFF
PRESS FOR 1 SECOND
P2
ZERO
CHECK
mbar
inWC
mmWC
psi
T2
T2
AUTO-OFF BATTERY
CHECK
PRESS FOR 1 SECOND
Page 2
ASP2 Static Pressure Probe
For accurate static pressure measurements.
1. Connect ASP2 to SDMN5 via hose.
2. Insert ASP2 into drilled or pre-existing 1/4” hole.
3. Use allignment arrow on the ASP2 to direct probe
into the air stream.
4. Read static pressure measurements from the display on the SDMN5
5. Remove probe and patch hole.
Note: For best accuracy on measurements less than
2inWC, take measureument within 1 minute of
zeroing.
More Products From Fieldpiece
Modular Expandability
Modular expandability is ability for accessory
heads and meters to change configurations to
match the various needs of an HVAC/R technician.
Accessory heads (the sensors) send out a mV
signal, which represents the value of the measurement, to whatever meter is attached to it. Heads can
attach directly to the top of a Stick meter, DL3 data
logger, or EHDL1. They can also plug into any meter
with mV ranges using ASLS2 leads.
Stick Meter
This is the heart of modular expandability. In addition to being a full functioning multimeter, any accessory head can be used with it.
Model HS36
Non contact voltage
Magnetic hanger
Autoranging
Backlight
Temperature
Volts, amps, ohms
Frequency
Microfarads
Includes:
HS36 Meter
ACH4 Current Clamp
ATB1 K-type TCouple
ADLS2 Deluxe Leads
ANC1 Case
Accessory Heads
Accessory heads are the sensors of multiple
parameters measured by technicians every day.
They plug into a mV range (depending on the head)
of a multimeter. The multimeter will display whatever the head is measuring. Instead of having to purchase and carry a separate instrument for each
parameter, a technician can use multiple heads and
a single multimeter to do the job.
Here are four of the many heads available:
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
AUTO-
OFF
English Metric
Ft/min M/s
KM/hrMPH
ºF ºC
OFF
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
CLAMP
300V
CAT.III
400A
AC Current
Clamp
!
1AAC / 1mVAC
400AAC MAX
ON
H
STABLE
LOBATT
ENGLIS
SH
t
ng
r ation
METRIC
R134A
SC
Refrige
Superhea
and Subcooli
R404A
Temp
SH orSC
Pressu re
T/C
l
Ca
Set
M
AT
ON
Lo Batt
BLE
STA
Combustion
Check
ASX24
GAS
OIL
Fuel Type
AUTO
OFF
T/C
2
CAL
2
O
CO
%
TEMP
%
°C °F
AOX2
ACH4
O-
F
AUT
OF
AirVelocity
&Temperature
Head
ON
LCD
100
X
Eng
READLOBATT
lish
Eng
Ft/minM/s
lish
Aver
Metri
(16sec)
age
c
Met
ºF ºC
ric
KM/hrMPH
OF
Real
F
time
AUT
OFF
O-
AAV3
99 Washington Street
Melrose, MA 02176
Phone 781-665-1400
Toll Free 1-800-517-8431
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
Visit us at www.TestEquipmentDepot.com
Test Equipment Depot - 800.517.8431 - 99 Washington Street Melrose, MA 02176
TestEquipmentDepot.com
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