UEi EM201B Manuel utilisateur

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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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