Wohler DC 410FLOW Manuel utilisateur

The Measure of Technology

Manual

Pressure Differential and Flowmeter

Art. n°. 22627 –2012-08-26

Wöhler DC 410FLOW

99 Washington Street

Melrose, MA 02176

Phone 781-665-1400

Toll Free 1-800-517-8431

Visit us at www.TestEquipmentDepot.com

Contents

Contents 1General Information..............................4

1.1 Operation Manual Information....................... 4

1.2 Notes............................................................. 4

1.3 Intended Use................................................. 4

1.4 Basic equipment............................................ 5

1.5 Transport....................................................... 5

1.6 Information on disposal................................. 5

1.7 Manufacturer................................................. 5

2Specifications........................................6

2.1 Measured Data.............................................. 6

2.2 Calculated Values ......................................... 7

2.3 Logger........................................................... 9

2.4 Technical Data ............................................ 10

3Component Explanation ....................11

3.1 Basic Unit.................................................... 11

3.2 Probes and Components............................. 13

3.3 Function ...................................................... 15

3.4 Functions..................................................... 16

3.5 Display and Key Setup................................ 16

4Getting Started....................................18

4.1 Check Battery Status................................... 18

5Operation.............................................20

5.1 Turning the Pressure Computer on and Self

Check.......................................................... 20

5.2 Measuring ................................................... 20

5.3 Special Tips................................................. 21

6Measurement Modes in the Main

Menu 23

6.1 Selecting the Main Menu............................. 23

6.2 Option „Air Speed“....................................... 23

6.2.1 Measuring the Air Speed............................. 24

6.2.2 Theoretical Background .............................. 25

6.3 Option „Airflow (Pitot)“ ................................. 26

Contents

6.3.1 Measuring the Airflow (Pitot)........................26

6.3.2 Grid-point Measurements ............................27

6.4 Option „Airflow (k value)“ .............................30

6.4.1 Theoretical Backround.................................30

6.4.2 Connecting the Wöhler DC 410Flow to the

Vent.............................................................31

6.4.3 Performing the Test.....................................32

6.5 Option “4 Pa Test“ .......................................34

6.6 Option „Energy Utilization Check“................38

6.7 Option „U value“...........................................45

6.8 Option “Volume“...........................................46

6.9 Graph / Record............................................48

6.10 Printing out Measurement Records .............50

6.11 Option "Save measurements"......................51

6.12 Option "SETUP"...........................................51

7Option 'Data management' ................53

7.1.1 Save Customer Records..............................54

7.1.2 Creating a New Customer Folder ................55

7.2 Option "Data management".........................56

7.3 Data Transfer with the PC or Notebook.......56

7.4 Data Logging ...............................................56

8Troubleshooting .................................57

9Maintenance........................................57

9.1 Maintenance work........................................57

10 Warranty and Service.........................58

10.1 Warranty......................................................58

10.2 Service.........................................................58

11 Accessories.........................................59

12 Declaration of conformity..................60

Points of sale and service............................61

General Information

1General Information

1.1 Operation Manual

Information

This operation manual allows you to work safely

with the Wöhler DC 410FLOW. Please keep this

manual for your information.

The Wöhler DC 410FLOW Flow and Pressure Meter

should be employed by professionals for its in-

tended use only.

Any damages caused by not following this manual

are excluded from liability.

1.2 Notes

WARNING!

Not following this warning can cause injury or

death.

ATTENTION!

Not following this note can cause permanent

damage to the device.

NOTE!

Useful information

1.3 Intended Use

The meter can be used for the measurement of

differential pressure, airflow, air speed and tem-

perature as well as for the registration of humidity

and barometric pressure. It is especially designed

for the following purposes:

Acceptance measurements at ventilation

systems according to DIN EN 12599.

4 PA Pressure Test to confirm the combustion

air availability.

Measurement of the ventilation loss and the

surface loss

Flow pressure, installation pressure, standing

pressure, jet pressure

Flow measurement in air and flue gas ducts

Data logger

General Information

1.4 Basic equipment

Meter

Components

Wöhler DC 410FLOW

Flow and Pressure

Meter

2 capillary tubes

Batteries

Plastic case

1.5 Transport

ATTENTION!

Improper transport can harm the instrument.

Always transport the instrument in the provided

carrying case in order to prevent damage. The

pressure connectors have to be protected by the

protection cap.

The case is included in the sets and can also be

bought separately.

1.6 Information on disposal

Electronic equipment does not belong into domes-

tic waste, but must be disposed according to the

applicable statutory provisions.

You may hand in any defective batteries taken out

of the unit to our company as well as to recycling

places of public disposal systems or to selling

points of new batteries or storage batteries.

1.7 Manufacturer

Specifications

2Specifications

2.1 Measured Data

Differential pressure

Description

Data

Range

±100 hPa

Accuracy

< 3 % of the reading, if

the value is < ± 10 Pa,

better than

± 0.3 Pa

Resolution

0.1 Pa at

-1,100 Pa to

+1,100 Pa, otherwise

1 Pa

Measurement of very small pressures

Description

Data

Range

± 100 Pa

Accuracy

< 3 % of the reading, if

the value is < ± 10 Pa,

better than

± 0.3 Pa

Resolution

± 0,01 Pa

Temperature (internal sensor)

Description

Data

Range

-20 °C to 60°C

Accuracy

< ± 1 °C

Resolution

0.1°C

Specifications

External temperature probe

(optional, e.g. with Measuring Pli-

ers for Temperature Measurement

or Special Wall Temperature

Probe)

Description

Data

Range

2 canals, -20.0 °C to

+800.0 °C

Accuracy

< ± 2 °C at 0°C to

133°C, otherwise 1.5

% of the value, ac-

cording to the directive

EN 50379-2

Resolution

0.1°C

Relative humidity

(internal sensor)

Description

Data

Range

0 % to 100 % rh (rela-

tive humidity), non

condensing

Accuracy

< ± 2 % RH, in range 0

to 90 % RH, otherwise

< 3 % RH

Resolution

0.1 % RH

Barometric Pressure

(integrated barometric pressure

sensor)

Description

Data

Range

±300 hPa to 1,100 Pa

Accuracy

< ± 1.5 % hPa of rea-

ding

Resolution

0.1 hPa

2.2 Calculated Values

Variable

Calculation

Pressure units

hPa, Pa, mmH2O, PSI, inwc,

bar, mbar, conversion ac-

cording to the general con-

version rules

Temperature

unit

°C and °F, conversion ac-

cording to the general con-

version rules

Specifications

Air speed

Description

Data

Range

0.3 m/s to 120 m/s

Resolution

0.01 m/s

Continuous density

correction

automatic, with

temperature signal

Specifications

2.3 Logger

Description

Data

Extent

9999 measurements,

each with the meas-

ured value of pressure

and humidity and

three temperature

values (if the external

temperature sensors

are connected) can be

stored in the internal

memory. The user can

set the log rate from 1

second to 24 hours.

USB interface for data

transfer to a PC

Permanent online da-

ta, already during the

registration

User adjustable log

rate

Sampling interval of 1

second to 24 hours

can be set.

NOTE!

Ensure that the meter is connected to the power

supply or that the batteries are charged.

Specifications

2.4 Technical Data

Description

Data

Current consumption

4 AA rechargeable

batteries or 4 AA

disposable batteries

1.5 volt

- working mode:

ca. 60 mA,

- off-mode and log

mode:

ca. 45 µA for clock

and processor

Interfaces

USB- (COM-Port),

data transfer to the PC

It is possible to trans-

fer the data directly

from the meter to the

Wöhler TD 600 ther-

mal fast printer.

Storage temperature

-20 °C to +60 °C

Operating temperature

5 °C to +40 °C

Mass

ca. 365 g, with batter-

ies and integrated

magnet

Dimensions

80 x 550 x 60 mm

Date and time

Date and time are

included in the meas-

urement report

Internal memory

2 MB

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