UEi EM151 Manuel utilisateur

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

• Singleinputtomeasurepressureto±20In-WG

• Measuresin:In-WG,mBarandPSI

• Ruggedized,includingrubberbootwithintegralmagnet

• Simpletwo-buttonoperation

• Autopower-offafter20minutes

• 3yearlimitedwarranty

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

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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

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) (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

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 (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)

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.

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SPECIFICATIONS

EM151

Measurementrange: -20to+20In-WG

Minimumpressuredisplayed: 0.01In-WG

Accuracy:  ±1%Fullscale

Resolution:  0.01”(-9.99to+9.99In-WG)

   0.1”(<-10,>+10In-WG)

Operatingrange:  0-40˚C,10-90%RH

non condensing

Battery life: 50 hours min with

alkaline battery

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: 40 hours min with

alkaline battery

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