Swema SwemaFlow 126 Operating Instructions Manual

Operating instructions

vers

vers 1.02 CW20160621

SWEMA AB
Pepparv. 27
123 56 FARSTA, SWEDEN
Tel: [phone]
Fax: [phone]
E-mail: [e-mail]
Web site: www.swema.com

Direct line [phone] | [e-mail]

Contents:

1. Introduction........................ 1

2. Technical data...................... 1

3. Function............................. 2

4. Charging............................. 7

5. Driver Installation................ 7

6. SwemaTerminal 3................ 8

7. PC-menu in instrument....... 9

1. Introduction

Thank you for choosing a quality instrument from Swema.
SwemaFlow 125D measures air flow directly in l/s, m3/h or cfm
(when set to US units).

SwemaFlow 126 includes:

• Flow capture instrument

•

Flow hood 300x300mm for exhaust flow (Some valves also supply)

• Carrying case, USB-cable, charger, Operating instructions

• Calibration certificate

Accessories:
Supply / Exhaust Flow hood 650 x 650 mm, h = 800 mm, Part.no: 769640
Cross for Swirl diffusers, Part no. 769650
Supply / Exhaust Flow hood 250 x 650 mm, h = 800 mm, Part.no: 760740
Exhaust Flow hood 300 x 300 mm, h = 130 mm, Part.no: 761550

2. Technical data

Measuring range:

Air Flow: 1,5... 125 l/s, 5,4... 450 m3/h, 3.2... 260 cfm
Temperature: 0...+50°C, 32...122°F
Barometer: 600... 1200 hPa, 18...35 inHg

Measurement uncertainty:

Air Flow: ±3% read value, min 0,5 l/s
Temperature: ±0,5°C
Barometer: ±3,5 hPa

Back-pressure method uncertainty: ±10% min 1 l/s

At 95% coverage probability in non condensing, non moist air, <80
% RH, non aggressive gases

Measuring method:
Mass flow, net of hot wires
Weight:
1,82 kg (including capture hood 300x300mm and throttle ring)

1.

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3. Function

The current flow is presented on the display two times seconds.
Swema Flow 126 can display real or standard flow by measuring air
temperature and barometric pressure.

On/Off (RED button)

Turn on and off the instrument by pressing the RED button. When
turning on the instrument, the display will first show firmware ver­sion and then battery voltage. ”It will after that go into BP (Back
Pressure) mode. When ”Real” is displayed SwemaFlow 126 the flow
at actual temperature och barometric pressure. To change to stan­dard flow ”std” (The flow is recalculated to a density at 20°C and
1013hPa) the PC-program SwemaTerminal 3 is used. The program
can be downloaded at www.arwmisure.it
Toggle the display light by pressing the RED button while the BLUE
button is held down. The istrument is shot off automatically after

ten minutes if no button is pressed.

Unit (BLUE button)

By pressing the BLUE button the display toggles between l/s, m3/h,
air temperature (°C) and barometric pressure (hPa). When set to US
units it toggles between cfm, air temperature (°F) and barometric
pressure (inHg).

Mode (GREY button)

Toggle between Back Pressure mode, Flow Factor mode and stored
values (notE).

2.

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Flow hood selection

For exhaust flow any hood size can be selected. For supply flow, use
a longer hood (650x650 or 250x650mm) to stabilize the flow.
The included 300x300 hood can be used for supply if it gives the
same result on the valve type as one of the longer hoods.
All hoods to SwemaFlow 126 can be used for exhaust flow measure­ments.

BP Mode (Back Pressure)

When measuring with any Flow capture the flow may be influenced
by the Flow capture itself. The flow may be throttled. This can be
corrected by using Back Pressure mode. By measuring two times,
with and without an extra throttle ring, SwemaFlow 126 calculates
the flow that reflects the true flow with no capture interference.
It doesn’t matter if you start to measure with or without the throttle
ring the important thing is that one measurement is with the throttle
ring and the other one without. It’s important where the throttle ring
is placed, when measuring with the throttle ring it should always be
placed after the hot wires in the sense of flow direction.

3.

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