Plastec Airflow Monitor A User Manual

Laboratory Airflow Monitors & Controls

TYPE A STANDARD &

NIGHT SETBACK

LED & DIGITAL

Specifications and Owner’s Manual

PLASTEC® VENTILATION, INC.

2216 60th Drive East • Bradenton, Florida 34203

[phone] • Fax [phone] • www.plastecvent.net

Laboratory Airflow Monitors & Controls

TYPE A STANDARD & NIGHT SETBACK

LED & DIGITAL

General Description

BENEFITS

• Safety: in accordance with EU laboratory
standard EN 14175

• Ease of installation and maintenance

• Fast and accurate sensor reading

• Attractive design: available in choice of LED or
digital display

RANGE

Versions:

• A LED: Monitors airflow, LED lights

• A DIGITAL: Monitors airflow, digital read out in
meter per second or feet per minute

FEATURES

• Audio and visual alarm

• 3 Pushbuttons: Fan On/Off, Light On/Off, Mute

• Alarm disabled when fan switch off

• Sash High

• Auxiliary contacts

• A 15 second or 30 second alarm delay

OPTIONS

• Surface Box Mounting: Plastic enclosure to
mount the face plate and to avoid profile cutting

the service panel.

• Alarm Relay: A remote alarm can be triggered
from a relay on the controller pcb.

• Battery Back Up: Red LED alarm is still

functional up to 12 hours when unit loses power.

• Custom Resin Stickers: Customizable resin

stickers with logo, address, etc.

INTERNATIONAL STANDARDS
COMPLIANCE

In accordance with:

- European laboratory standard EN 14175-2

- Electromagnetic standards EN
61326 : 1997/A1 : 1998/A2 : 2001/A3 : 2003

(Test report RC-05-42060-1) US FCC Part 15
Class B edition 2005 (Test report RC-05­ 42060-2-A)

- European RoHS directive governing disposal and
recycling of electronics

- French laboratory standard XPX 15203 of Sept.
1996

- CE

COMPONENTS

• Circuit Board: Panel mounted circuit board to

be installed vertically or horizontally onto fume
cupboard with 2x Ø 2.8 mm / 0.11" screws. IP55
protection ensured by “O” ring seal. Face plate
to be supplied with chemical resistant plastic
sticker (horizontal or vertical) with control/push
buttons on fascia. Surface box mounting optional.

• Numerical and Antistatic Sensor: To be installed

inside fume hood. Sensor measures air speed
variations inside fume hood. Supplied with a

3.5 m (5 m optional) shielded cable with pin
connections onto controller circuit board.

• Power Supply: 115 VAC to 12 VDC power

transformer directly into controller circuit board.

Comes with a wall plug and cord. Adaptor may
be required to fit local power socket.

COLORS

Plastic fascia is
available in:

- White (Standard)

PACKING

• Supplied in cardboard box which includes con-

troller circuit board, face plate, sensor and power
transformer. Surface box mounting optional.

2

Laboratory Airflow Monitors & Controls

TYPE A STANDARD & NIGHT SETBACK

LED & DIGITAL

Operating Principle

When the fume extraction fan is running, it causes negative pressure inside
the fume cupboard. If the sash is lowered, the negative pressure becomes
more intense causing air to be drawn through the sash opening at an increased
velocity. Conversely, if the sash is raised, the negative pressure becomes less
intense and air velocity reduces.

If an opening is made in the wall of the fume cupboard, air will enter it at a
velocity determined by the same negative pressure that is drawing air into the
sash opening. By sensing the air velocity through an opening, we can determine
its level at the sash opening.

PLASTEC
hole in the cupboard and sending the air velocity measurement obtained to a
display on the fascia panel.

The air velocity level is displayed on the fascia either by LED illumination or
digital read-out. An audible alarm will also sound if the air velocity is too low.

®

AirControl exploits this by the placing of a numerical sensor into a

SENSOR

Airflow Monitor

www.plastecvent.net

2216 60th Drive East • Bradenton, Florida 34203

[phone] • Fax [phone] • www.plastecvent.net

3

Controller

Sensor

Laboratory Airflow Monitors & Controls

TYPE A STANDARD

LED & DIGITAL

Schematic AirControl A LED & Digital

115 VAC / 12 VDC
Power Supply

Hood Light
on/off relay

Sensor

Signal Input

Motorized

Damper

Sash movement

=

Pressure decrease

or increase

Sash High Alarm Input

OUTPUT:

0 to 10V

or

4-20mA

Air speed

monitoring & control

Air Make-up
on/off relay

Fan on/off
relay

Motor

Starter

Relay

Make-up

Fan

OR

PLASTEC

Extraction Fan

®

!

If air speed is low

2216 60th Drive East • Bradenton, Florida 34203

[phone] • Fax [phone] • www.plastecvent.net

4

Laboratory Airflow Monitors & Controls

TYPE A NIGHT SETBACK

LED & DIGITAL

Schematic AirControl A Night Setback

115 VAC / 12 VDC
Power Supply

Controller

Sensor

Sensor

Signal Input

Hood Light
on/off contact

Sash movement

=

Pressure decrease

or increase

Sash High Alarm Input

Night Setback relay

OUTPUT

Air speed

monitoring & control

!

If airflow is low

2216 60th Drive East • Bradenton, Florida 34203

[phone] • Fax [phone] • www.plastecvent.net

5