UEi EM201B Manual de usuario
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EM201B
- +
Low Battery PSI In-Wg mBar hPa
EM201B
Electromic Manometer
INSTRUCTION MANUAL
2
TABLE OF CONTENTS
Safety Rules............................................................................... 3
Features...................................................................................... 4
Operating Instructions ............................................................. 5
EM201B Specifications ........................................................... 8
Pressure Conversion Chart..................................................... 9
Warranty................................................................................... 11
INTRODUCTION
The EM201B provides a simple, time-saving alternative to
U-tube pressure measurements. Use the UEi EM201B to
measure gas supply and draft pressures in residential or
light commercial properties. The differential mode provides
a convenient method to measure pressure drops.
3
SAFETY RULES
WARNING!
Before every use, check to be sure the meter and its
tubing are free from breaks or blockage. While using the
meter, if you suspect gas is leaking, or if you can smell
gas, close off the gas supply and ventilate the occupied
space. Identify and repair the source of the leak before
continuing with the test.
In the interest of safety, this instrument should only be
used by trained, competent professionals who know the
hazards and consider the risks of working on and with
industrial equipment.
The meter does not measure water pressures; under
these conditions they will fail. Do not exceed 10 PSI input
pressure
4
FEATURES
EM201B
• Dual input differential measurement to ±60 In-WG
• Measures in: In - WG, mBar, PSI
and Pa (auto range to hPa)
• Ruggedized, including rubber boot with integral magnet
• Auto power-off after 60 minutes
• Dynamic Min/Max value capture
• Data hold
• Back-lit display
• 3 Year limited warranty
5
OPERATING INSTRUCTIONS
To turn the meter on press the power button for 2 seconds.
1. Zero the meter
Prior to use, the meter must be zeroed. To do this, ensure
the meter is in a non-pressurized area, and press and hold
the ‘ZERO’ button for approximately four seconds. The
display will show ‘888’ to indicate that the zero function
has occurred.
2. Measure Pressure
Connect the flexible tube between the meter and the
pressure source.
When performing single input measurement use the
positive input. Positive pressures will display as positive
results, and negative pressure will display a negative
result.
6
Measure Pressure (Cont.)
To perform pressure with respect to a different area,
connect a tube to the positive port, place the end of this
tube to the area to be measured and leave the negative
port open. Results will show the pressure in the target
area with respect to the area the meter is located
Use both the positive and negative ports to perform
differential measurements. Place the positive port in the
area expected to have a higher pressure, and the negative
port in the area of lower expected pressure.
3. SCALE
To select the desired units press “SCALE”. Repeated
presses of this button will scroll through PSI (pounds per
square inch), In-Wg (Inches water gauge, or water scale),
mBar (millibar), or Pa (Pascals). On the Pascal scale the
meter will automatically switch to hectopascals (hPa) when
the reading exceeds 1000 pascals. 1000 pascals is equal to
10 hectopascals.
7
4. DYNAMIC MIN/MAX
The EM201B will capture values for both the minimum and
maximum pressure measured. To reset press MIN/MAX
until the display shows “- CLr”. This will reset the values
stored for minimum and maximum measured without the
need to disconnect and zero the pressure measurement.
Captured values can be displayed in any available scale.
5. HOLD
The EM201B has a display hold feature. Press this during
reading to freeze the display. Press again to return to
actual measurement.
6. BACKLIGHT
The EM201B has a backlit display. Press to turn on or
off the back light feature. The back light will stay on until
the button is pressed again (NOTE: using the back light
significantly reduced battery life)
7. OVER RANGE (OL)
If the input exceeds the meter range “OL” will be displayed.
Immediately disconnect from the pressure supply safely to
reduce chances of damage to the instrument.
8
SPECIFICATIONS
EM201B
Measurement range: -60 to +60 In-WG
Minimum pressure displayed: 0.01 In-WG
Accuracy: ±0.03 < 3 In-WG
±1%rdg > 3 In-WG
Resolution: 0.001”(-9.999 to +9.999 In-WG)
0.01” (< -10,> +10 In-WG)
Operating range: 0 - 40˚C, 10 - 90% RH
non condensing
Battery life: 400 hours min with
alkaline battery
9
Multiply By To Get
In - WG 1.868 mmHG
In - WG 0.074 in HG
In - WG 0.249 kPa
In - WG 249.1 Pascals
In - WG 2.491 mBar
In - WG 0.036 PSI
In - WG 25.40 mmH2O
PRESSURE CONVERSIONS
NOTE: In - WG is an abbreviation for inches water
gauge. This is also stated as In - WC (Inches water
column) or In - H20. (“wc, “WG, “H20.)
10
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