PeakTech 5145 Professional Pressure Difference and Air Flow Meter Instruction Manual

Professional Pressure-Difference & Air Flow Meter

Safety Precautions

This product complies with the requirements of the following European Community Directives: 2014/30/EU (Electromagnetic Compatibility) as amended by 2014/32/EU (CE-Marking).
To ensure safe operation of the equipment and eliminate the danger of serious injury due to shortcircuits (arcing), the following safety precautions must be observed.
Damages resulting from failure to observe these safety precautions are exempt from any legal claims whatever.

• Do not use this instrument near high-energy circuits.
• Do not operate the equipment near strong magnetic fields (motors, transformers etc.).
• Do not place the equipment on damp or wet surfaces.
• Do not place water-filled containers on the equipment (danger of short-circuit in case of knockover of the container)
• Do not operate the meter before the cabinet has been fully closed.
• Comply with the warning labels and other info on the equipment.
• The measurement instrument is not to be to operated unattended.
• Always start with the highest measuring range when measuring unknown values.
• Do not subject the equipment to direct sunlight or extreme temperatures, humidity or dampness.
• Do not subject the equipment to shocks or strong vibrations.
• Keep hot soldering irons or guns away from the equipment.
• Allow the equipment to stabilize at room temperature before taking up measurement (important for exact measurements).
• Replace the battery as soon as the battery indicator appears. With a low battery, the meter might produce false reading.
• Fetch out the battery when the meter will not be used for long period.
• Periodically wipe the cabinet with a damp cloth and mid detergent. Do not use abrasives or solvents.
• The meter is suitable for indoor use only
• Do not store the meter in a place of explosive, inflammable substances.
• Do not modify the equipment in any way
• Do not place the equipment face-down on any table or work bench to prevent damaging the controls at the front.
• Opening the equipment and service – and repair work must only be performed by qualified service personnel
• Measuring instruments don’t belong to children hands.

1.1 Cleaning the cabinet
Clean only with a damp, soft cloth and a commercially available mild household cleanser. Ensure that no water gets inside the equipment to prevent possible shorts and damage to the equipment.

Features

1. Large LCD display with backlight.
2. Relative time clock on MAX MIN and AVG provides a time reference for measurement.
3. Pressure, velocity or air flow measurement provides Zero Adjust.
4. Display pressure, Air velocity or air flow plus environment Temperature simultaneously.
5. Easy to calculate the area of a rectangular or circular duct.
6. USB interface, USB to UART Bridge Controller.
7. Low battery indication, and Auto Power Off mode (Sleep mode) increases battery life.

Front Panel Description

1. pressure input (+)
2. differential pressure (-)
3. LCD-display
4. Press to changes the temperature units. In Setup mode, press to scroll to the Setup option you want to change or press to increase the displayed setting. In Recall mode, press to select the desired sample number.
5. Press button to turn on the backlight. Press it again to turn off the backlight. Press button for 3 seconds to start or exit Setup. (See “Changing Setup Options.”)
6. Press to Changes secondly showing number units. In Setup mode, press to scroll to the Setup option you want to change or press to increase the displayed setting. In Recall mode, press to select the desired sample number.
7. Press button to store sample data or press button to clear sample data in Recall mode.
8. Press to step through the maximum, minimum, and average readings. To exit the MAX/MIN/AVG mode, press the button for 2 seconds to return to normal operation
9. Press to show the air velocity, press secondly to show the high and length of a rectangular or the diameter circular duct, press thirdly to show the air flow, press  to show differential pressure again.
10. battery cover
11. Press to turn the thermometer on or off.
12. Press to freeze or unfreeze the displayed readings. Press button and hold 2 seconds to zero out the display.
13. Pitot tube for measuring of airflow
14. Press button and hold 2 seconds to enter Recall mode. In Recall mode, press to calculate the sample data. In Setup mode, press button to enter a Setup option.
    Press again to store the displayed setting in memory.

Display Elements

1. min : sec or hour : min Display..
2. Pressure, Velocity, Flow or temperature modes are active
3. Primary Display.
4. Units of air velocity.
5. Units of pressure.
6. The indication of meter communicating to PC.
7. Auto Power Off mode indicators.
8. Duct Shape choices.
9. Low battery indicator. Replace the battery as soon as the low battery indicator appears.
10. Data Hold indicator.
11. The units of H, W or D.
12. Entering or exiting setup mode.
13. Indicates that a stored sample (or all samples) is about to be deleted from memory.
14. The sample memory is being accessed and the number of samples.
15. Annunciators showing that sample memory is being accessed.
16. REC, MAX, MIN and AVG indicators.
17. Temperature units of primary display.
18. Units of air flow.
19. Temperature units of secondly display.
20. Digits for temperature and time.

Changing Setup Options

Use Setup to chose duct shape and set the duct parameters .sleep mode, Max/min/avg mode menu setting and clear memory. The thermometer stores the settings in its memory.

Setup Options

5.2. Changing a Setup Option

1. Press or to scroll to the setup option you want to change.
2. Press to indicate that you want to change this setting.
3. Press or until the setting you want to use appears on the display.
   Press to store the new setting in memory.

Notes:
Setup is disabled in MIN/MAX/AVG mode.

5.3. Duct dimension units Setting

1. When the meter is in Setup mode, press or to scroll to the duct dimension units setup option.
   

2. Press button. It shows “in” or “cm” on the display.

3. Press or to scroll to the setup option you want to change.

4. Press to store the new setting in memory.

5.4. Duct Shape and Parameters Setting
When the meter is in parameters setup mode. The screen is show number of the last duct shape and size that is entered. If the duct is different than the stored version, then find the proper duct type for the measurement (rectangular or round).

5.5. Choose Duct Shape

1. When the meter is in setup mode, press or to scroll to the duct shape setup option.
2. Press button. The screen shows the “ ”(rectangle) or “ ”(circular).
3. Press or to scroll to the setup option you want to change.
4. Press to store the new setting in memory and enter parameters setup option.

5.6. Parameters Setting

1. If duct is rectangle, the height of duct numbers and “H=”will be first shown in the primary show.

2. Press or button to select the decimal point.

3. Press to change the station of flashing digit and Press or to change the flashing digit from 0 to 9.

4. Press button, the width of duct numbers and “W=”will be shown in the primary show.

5. Press button to select the next digit.

6. Press to change the station of flashing digit and press or to change the flashing digit from 0 to 9.

7. Press to store the new parameters in memory.

8. If duct is circular, the diameter of duct numbers and “D=”will be shown in the primary show then select the duct diameter that you want to use in the same way.

5.7. Auto Power Off Mode
The meter enters sleep mode (default). That is to say, the meter will automatically shut off after 20 minutes if no button press occurs for 20 minutes. When the meter is in Setup mode, the display shows SETUP.

Press or to scroll to the “ SLP ” page . Press to indicate “ON” or “OFF”.
Press or until the setting you want to use appears on the display. Press to store the new setting in memory. ON (sleep mode on) or 0FF (sleep mode off).

5.8. Menu Setting

1. When the meter is in Setup mode, Press or to scroll to the Mode Menu setup option.
2. Press or to scroll to the setup option you want to change.
3. There are three choices for selecting. “1”. Display pressure and air velocity value.
   “2”. Display air velocity and air flow value.
   “3”. Display pressure, air velocity and air flow value.
   4. Press to store the new setting in memory.

Clear Memory Setting

1. When the meter is in Setup mode, Press or to scroll to the clear memory setup option.

2. Press to select the desired sample. There are three choices for selecting.
   PRESS VEL FLOW: clear all pressure, velocity and flow sample data.
   PRESS: clear all pressure sample data.
   VEL: clear all velocity sample data.
   FLOW: clear all flow sample data.

3. Press or until the display show “YES”, press , then clear the memory.

Operation

7.1. Measuring Pressure
The Primary Display number is Pressure value, the device measures Gauge/Differential Pressure ± 5000Pa, it features 5 selectable units of measure: PSI, mbar, Pa, inH2O, mmH2O.

1. Press to enter the pressure mode and press to select unit.

2. Connect a single hose to the “Input (+)” port, leaving the “Ref (-)” port unconnected.

3. With the tubing open to ambient conditions press and hold for 2 seconds to zero out the display.

4. Place the input hose in a different zone than the Meter.

5. The Meter displays the differential pressure of the input zone with respect to the reference zone.
   For instance, a positive reading means that the input zone is positively pressured with respect to the Meter location or its reference zone.

7.2. Measuring Velocity
The Meter uses standard ambient conditions (temperature =21.1 °C/70 °F, barometric pressure = 14.7 PSI / 1013 mbar), to approximate actual velocity and flow.
The primary display number is air velocity, the device measures air velocity, and it features 5 selectable units of velocity measure: m/s, ft/min, km/h, MPH, knots.

1. Press to enter Velocity mode and press to select unit.

2. Connect the hoses to the pitot tube to the Meter. The “Input (+)” pressure port on the Meter connects to the white hose from the total pressure connection of the pitot tube. The “Ref (-)” pressure port on the Meter connects to the black hose from the static  pressure connection of the pitot tube. the tubing open to ambient conditions press and hold for 2 seconds to zero out the display.
   

3. When make the measurement, the pitot tube tip should against the measured wind as shown in upper figure, and ensure that the axis of the duct is aligned with the fluid flow for ± 10 °. If Measure Velocity measures negative and show “o Err”on the display,  check to make sure that the hoses are attached to the correct ports on the Meter and the pitot.

7.3. Measuring Flow

1. Press to enter air flow mode and press to select unit.
2. The Meter shows the duct shape and size. The Meter stores the last duct shape and size that is entered. If the duct is different than the stored version, press button to find the proper duct type for the measurement (rectangular or round). Refer to Step duct  shape and parameters setting. (“Changing Setup Options.”)

Notes:
HOLD, Save, MIN/MAX/AVG, Zero, and Setup can be used when measuring pressure, velocity and flow.

7.4. Displaying Temperature
Ambient temperature is displayed on the secondly show as a reference. The temperature can be displayed in either °C or °F. Press to select unit °C or °F.

7.5. Holding the Displayed Readings

1. Press to freeze the readings on the display .The display shows HOLD.
2. Press again to turn off the HOLD function

7.6. Viewing the MIN, MAX, and AVG Readings

1. Press to step through the maximum (MAX), minimum (MIN), or the average (AVG) readings.
   The elapsed time since entering MAX/MIN/AVG mode, or the time at which the minimum or maximum occurred appears on the display.

2. Press to show the maximum, minimum, and average of pressure, velocity or flow, and temperature value.

3. Press button for 2 seconds to exit MAX/MIN/AVG mode.

7.7. Saving Samples
The Meter saves various samples in its three major modes. To save a sample, do the following:

1. When taking a sample, press to store the sample. The Meter can save up to 99 samples in each of its three modes.
2. If the memory is full (99 samples have been stored), more samples cannot be stored. If the user attempts to store another sample, the Meter shows “FU” and does not save new readings.

7.8. Recall and Clearing Sample Data
The Meter stores data that sometime will need to be recall and periodically to be cleared. Individual samples or the entire data memory can be cleared. When the memory is full (99 samples), it shows ”FU” (Full) on the display when is pressed and the Meter  emits short beeps and will not save any value unless some samples are cleared.

To recall sample data, do the following:

1. Press to recall samples for that mode.

2. Press (RECALL) and hold the button for 2 seconds to recall samples. The last measurement saved appears first.
   Use and to locate the desired sample.

3. Once the samples are taken, press to view the average of all the samples.

4. Press and hold the button for 2 seconds to exit recall mode.

To clear individual sample data, do the following:

1. Press to recall samples for that mode.
2. Press (RECALL) and hold the button for 2 seconds to recall samples. Use and to select the desired sample.
3. Press to clear the sample. Note that the number of samples displayed is reduced.
4. Press and hold the button for 2 seconds to exit recall mode.
   To clear all sample data, Refer to Step clear memory setting. (“Changing Setup Options.”)

Specifications

8.1. General Specifications

for windows 2k/XP/VISTA/7, battery and operation manual
Relative Humidity:| < 10 °C| <90 % RH
| 10 °C to 30 °C| <75 % RH
| 30 °C to 40 °C| <45 % RH

8.2. Manometer specification

1psi27.68=inH2O
1psi68.947=mbar
1psi703.072=1mmH2O
1psi*6894.6=Pa
FSO: Full Scale Output (The difference signal between zero and end point of range)

8.3. Range of Air Velocity

Air Velocity

| Range| Resolution|

Accuracy

---|---|---|---
m/s (meter per second)| 1.00-80.00| 0.01| ±2.5% of reading at 10.00 m/s
ft/min (feet per minute)| 200-15733| 1| accuracy is function of velocity and duct size
km/h (kilometers per hour)| 3.6-288.0| 0.1
MPH (miles per hour)| 2.24-178.66| 0.01
Knots (nautical miles per hour)| 2.0-154.6| 0.1

8.4. Range of Air Flow

CFM (ft3/min) = Air Velocity (ft/min) x Area (ft2)
CMM (m3/min) = Air Velocity (m/s) x Area (m2) x 60

8.5. Range of Temperature

| Range| Resolution| Accuracy
---|---|---|---
°C| 0 to 50.0 °C| 0.1| ±1.0 °C
°F| 32.0 to 122.0 °F| 0.1| ±2.0 °F

Error Codes

An error message will appear on the display if the meter fails an internal diagnostic test. And it will freeze all the buttons.
OL: Pressure or air velocity value is over the range.
-OL: Pressure value is below the range.
o Err: air velocity or air flow is below the range.

Replacing the Battery

When the entire display shows the low battery indication, the 9 V battery has fallen to a critically low voltage level and should be replaced as soon as possible.

1. Take off the battery cover at the button side of the instrument,
2. Remove the old battery and replace the new 9 V battery.
3. Make sure that the battery is installed to the right position and connected to the proper polarisation with the battery snap.
4. Put on the battery cover and let it snap in to secure.

Notification about the Battery Regulation
The delivery of many devices includes batteries, which for example serve to operate the remote control. There also could be batteries or accumulators built into the device itself. In connection with the sale of these batteries or accumulators, we are obliged under  the Battery Regulations to notify our customers of the following:
Please dispose of old batteries at a council collection point or return them to a local shop at no cost.
The disposal in domestic refuse is strictly forbidden according to the Battery Regulations. You can return used batteries obtained from us at no charge at the address on the last side in this manual or by posting with sufficient stamps.
Contaminated batteries shall be marked with a symbol consisting of a crossed- out refuse bin and the chemical symbol (Cd, Hg or Pb) of the heavy metal which is responsible for the classification as pollutant:

1. “Cd” means cadmium.
2. “Hg” means mercury.
3. “Pb” stands for lead.

This manual considers the latest technical knowing. Technical changings which are in the interest of progress reserved.
We herewith confirm, that the units are calibrated by the factory according to the specifications as per the technical specifications. We recommend to calibrate the unit again, after 1 year.
© PeakTech

PeakTech Prüf- und Messtechnik GmbH
– Gerstenstieg 4 – DE-22926 Ahrensburg / Germany
****+49 (0) 4102 97398-80 +49 (0) 4102 97398-99
info@peaktech.de www.peaktech.de

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