UEi EM151 Bedienungsanleitung
EM201B
- +
Low Battery PSI In-Wg mBar hPa
EM151
Scale
(Hold for OFF)
EM151 / EM201B
Electromic Manometers
INSTRUCTION MANUAL
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TABLE OF CONTENTS
Safety Rules............................................................................... 3
Features...................................................................................... 4
Operating Instructions ............................................................. 5
EM151/EM201B Specifications .............................................. 8
Pressure Conversion Chart..................................................... 9
Warranty................................................................................... 11
INTRODUCTION
The EM151 and EM201B provide a simple, time-saving
alternative to U-tube pressure measurements. Use the
UEi EM151 & EM201B to measure gas supply and draft
pressures in residential or light commercial properties. The
EM201B differential mode provides a convenient method to
measure pressure drops.
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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.
These meters do not measure water pressures; under
these conditions they will fail. Do not exceed 10 PSI input
pressure
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FEATURES
EM151
• Singleinputtomeasurepressureto±20In-WG
• Measuresin:In-WG,mBarandPSI
• Ruggedized,includingrubberbootwithintegralmagnet
• Simpletwo-buttonoperation
• Autopower-offafter20minutes
• 3yearlimitedwarranty
EM201B
• Dualinputdifferentialmeasurementto±60In-WG
• Measuresin:In-WG,mBar,PSI
and Pa (auto range to hPa)
• Ruggedized,includingrubberbootwithintegralmagnet
• Autopower-offafter60minutes
• DynamicMin/Maxvaluecapture
• Datahold
• Back-litdisplay
• 3Yearlimitedwarranty
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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 EM151
single port or the EM201B positive input. The EM201B
positive input is to the right when looking at the front of the
meter. Positive pressures will display as positive results,
and negative pressure will display a negative result.
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Measure Pressure (Cont.)
To perform pressure with respect to a different area using
the EM201B connect a tube to the positive port, place
the end of this tube to the area to be measured and 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
Toselectthedesiredunitspress“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) (EM201B only).
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.
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4. DYNAMIC MIN/MAX (EM201B ONLY)
The EM201B will capture values for both the minimum and
maximumpressuremeasured.ToresetpressMIN/MAX
untilthedisplayshows“-CLr”.Thiswillresetthevalues
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 (EM201B ONLY)
The EM201B has a display hold feature. Press this during
reading to freeze the display. Press again to return to
actual measurement.
6. BACKLIGHT (EM201 ONLY)
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)
Iftheinputexceedsthemeterrange“OL”willbedisplayed.
Immediately disconnect from the pressure supply safely to
reduce chances of damage to the instrument.
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SPECIFICATIONS
EM151
Measurementrange: -20to+20In-WG
Minimumpressuredisplayed: 0.01In-WG
Accuracy: ±1%Fullscale
Resolution: 0.01”(-9.99to+9.99In-WG)
0.1”(<-10,>+10In-WG)
Operatingrange: 0-40˚C,10-90%RH
non condensing
Battery life: 50 hours min with
alkaline battery
EM201B
Measurementrange: -60to+60In-WG
Minimumpressuredisplayed: 0.01In-WG
Accuracy: ±0.03<3In-WG
±1%rdg>3In-WG
Resolution: 0.001”(-9.999to+9.999In-WG)
0.01”(<-10,>+10In-WG)
Operatingrange: 0-40˚C,10-90%RH
non condensing
Battery life: 40 hours min with
alkaline battery
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