meitav-tec M4000MD Manual de usuario
M4000MD
Digital HVAC Analyzer
Owner’s Manual
TABLE of CONTENTS
1. INTRODUCTION 3
2. FEATURES 4
3. WARNINGS & PRECAUTIONS 5
4. INSTRUMENT DESCRIPTION 6
5. OPERATING INSTRUCTIONS
5.1 UNITS OF MEASURE 7
5.2 TURN THE UNIT ON OR OFF 8
5.3 MEASURING TEMPERATURE AND DEW POINT 9
5.4 MEASURING HUMIDITY LEVEL 10
5.5 MEASURING AIR VELOCITY 11
5.6 MEASURING AIR VOLUME 10-12
5.7 MEASURING CAPACITY 13-16
6. MAINTENANCE 17
6.1 LOW BATTERY INDICATION 17
6.2 BATTERY REPLACEMENT 17
7. SPECIFICATIONS 18
1. INTRODUCTION
Congratulations! You now own one of the finest HVAC tools available today.
The unique M4000MD provides you with all the necessary information to
measure HVAC performance – including Temperature, Humidity, Dew Point,
Velocity, Volume and Capacity.
The M4000MD can be used for anything from simple Temperature readings to
complex multi-outlet computations of BTU's, from Humidity measurement to
system balancing or total outlet output. An advanced measurement instrument
designed for in field use, the M4000MD is lightweight, completely portable and
ergonomically designed. Three simple keypad buttons control the unit, providing
quick and easy operation. An advanced microprocessor does all the
computations needed – and the results are displayed on a large LCD screen.
For the best results with your new M4000MD, please read this manual carefully.
It describes operation, care and additional information that will allow you to get
the greatest benefit from your new instrument.
2. FEATURES
Temperature in °C and °F
Humidity in % Relative Humidity
Air Velocity in m/sec
Air Volume in m
3
/sec and CFM
Capacity in kW and Btu/h
Dew Point in °C and °F
Allows the measuring of round grills
Memory allows Cumulative Volume and BTU measurements
Keypad Controls
Portable and Lightweight
Durable sensing mechanisms
1.8m (Six foot) coil cord
Tough ABS housing
75 mm x 45 mm (3” x 1.75”) Large Liquid Crystal Display
Carrying Case Included
3. WARNINGS & PRECAUTIONS
When the instrument is first introduced into a new environment, i.e. from a
service vehicle into a building, allow 10 minutes for the instrument’s
humidity sensor to stabilize.
Remember to allow unit readings to stabilize in order to avoid false
readings.
Do not place Sensor Cover in direct contact with any surface, especially
extremely hot or moist ones.
Do not expose Sensor to temperatures outside its range.
Do not expose Fan to velocities above its range.
Avoid contact with solvents and liquids.
Avoid extreme mechanical shook or vibrations.
Always take care to keep the coil cord free of rotating objects such as fan
blades or cages.
4. INSTRUMENT DESCRIPTION
5. OPERATING INSTRUCTIONS
5.1. Units of Measure
PARAMETER METRIC English - Press [▼]
Temperature °C °F
Humidity %RH
Velocity meters/sec
Width / Length Centimeter
Air Volume M
3
/sec CFM
Capacity kW BTU/H
Dew Point °C °F
5.2. Turn the unit ON or OFF
5.2.1. Press the [ON] button - the unit will beep and the LCD lights.
5.2.2. Press [ON] button again to switch the unit off.
5.3. Measuring Temperature and Dew Point
5.3.1. The M4000MD will switch on in the TEMP mode. If already in another
mode, press the [MODE] button until TEMP is displayed on LCD.
TEMP
oC
5.3.2. Place the probe in front of the outlet (or the area to be measured) so that
the SENSOR’S COVER IS FACING THE OUTLET.
5.3.3. The temperature in °C is displayed. Press [▼] for °F.
5.3.4. To display Dew Point - Press [▲]. Dew Point is displayed in °C.
Press [▼] for °F
DEW POINT
oC
5.4. Measuring Humidity Level
5.4.1. Press the [MODE] button – “HUMIDITY%” will be displayed on LCD.
5.4.2. Place the probe in front of the outlet (or area to be measured) so that the
sensor’s cover is facing the outlet.
5.4.3. Relative Humidity level in %RH is displayed.
HUMIDITY%
5.5. Measuring Air Velocity
5.5.1. Press the [MODE] button – “VELOCITY” will be displayed on LCD.
5.5.2. Place the probe in front of the outlet (or area to be measured) so that the
sensor’s cover is facing the outlet.
5.5.3. Air velocity in meters per second (m/s) is displayed.
VELOCITY
m/s
5.6. Measuring Air Volume
5.6.1. Press the [MODE] button – “AIR VOLUME” and “ENTER WIDTH”
(flashing) will be displayed on LCD.
The M4000MD is requesting the A/C outlet’s width.
5.6.2. Using the [▲] and [▼] buttons, enter the appropriate measurement in
centimeters.
AIR VOLUME
cm
ENTER WIDTH
5.6.3. Press [ENTER] to store the width in memory. – "AIR VOLUME" and
“ENTER LENGTH” (flashing) will be displayed on LCD.
The M4000MD is requesting the A/C outlet’s length.
5.6.4. Using the [▲] and [▼] buttons, enter the appropriate measurement in
centimeters. DO NOT PRESS ENTER UNTIL STEP 5.5.7
AIR VOLUME
cm
ENTER
LENGTH
5.6.5. To measure round grills – after step 5.5.1 press and hold the [ENTER]
button for more than 2 seconds, until "ENTER" and "DIAMETER" are
flashing on LCD.
The M4000MD is requesting the A/C outlet’s diameter.
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