Plastec Junior Air Control User Manual

Laboratory Airflow Monitor

TYPE JUNIOR

Owner’s Manual and Technical Specifications

PLASTEC® VENTILATION, INC.

2216 60th Drive East • Bradenton, Florida 34203

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

Laboratory Airflow Monitor

TYPE JUNIOR

General Description

BENEFITS

• Safety: in accordance with latest EU
laboratory standard EN 14175

• Ease of installation and maintenance

• Stable and accurate sensor reading

• Attractive design

FEATURES

• Audio alarm

• 1 Push button: Mute

COLORS

Plastic fascia is available in white standard
color.

INTERNATIONAL STANDARDS
COMPLIANCE

COMPONENTS

• Circuit Board:

Panel mounted circuit board to be installed

vertically 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 (vertical) with control/push buttons
on fascia. Surface box mounting included.

• Sensor:

To be installed inside fume hood. Sensor

measures air speed variations inside fume
hood. Supplied with a 3.5 m / 11.48'
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.

In accordance with:

- European laborator 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

2216 60th Drive East • Bradenton, Florida 34203

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

PACKING

• Supplied in cardboard box which includes
controller circuit board, face plate, sensor
and power transformer.

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Laboratory Airflow Monitor

TYPE JUNIOR

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® AirControl exploits this by the placing of a numerical sensor, or
thermal anemometer, into a 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 by LED illumination. An audible
alarm will also sound if the air velocity is too low.

SENSOR

PLASTEC

JUNIOR

AIRCONTROL

®

2216 60th Drive East • Bradenton, Florida 34203

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

3

Laboratory Airflow Monitor

TYPE JUNIOR

Schematic JUNIOR

115 VAC /12 VDC
Power Supply

Controller

Sensor

Sensor

Signal Input

Sash movement

=

Pressure decrease

or increase

Sash High Alarm Input

2216 60th Drive East • Bradenton, Florida 34203

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

4

Laboratory Airflow Monitor

TYPE JUNIOR

Specifications

Junior AirControl

Part Number 819699

1 green LED for normal air speed

Display – Visual 1 red LED flashing for alarm

No digital display

Alarm Setpoint

Alarm Indication

Alarm Mute

Mounting Flush or surface box

Calibration

Power Requirement 12 VDC (power supply included)

Orientation Vertical only

Front fascia: 100L x 70W x 10D mm

Monitor Dimensions (metric)

Front fascia: 3.94" x 2.76" x 0.39"

Monitor Dimensions (U.S.)

Surface box: 3.94" x 0.79" x 0.79"

Standard: below 0.39m/s / 78 FPM

1 red LED flashing and audible buzzer

Factory pre-calibrated @ 0.5m/s / 100 FPM

Recalibration possible

Surface box: 100L x 20W x 20D mm

2216 60th Drive East • Bradenton, Florida 34203

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

5

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Laboratory Airflow Monitor

TYPE JUNIOR

MONITOR & MOUNTING BOX

Specifications

100 mm / 3.94"

Mounting Box

20 mm / 0.79"

20 mm / 0.79"

70 mm / 2.76"

90 mm / 3.54"

100 mm / 3.94"

Vis Ø 2.8 mm / 0.11"

SENSOR

Cable L = 3.5m / 137.76” (11.48')

NOTE: All dimensions in mm / inches

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

65 mm / 2.56"

28 mm / 1.10"

40 mm / 1.57"

Ø 22 mm / 0.87"

2216 60th Drive East • Bradenton, Florida 34203

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Laboratory Airflow Monitor

Front plate/fascia

TYPE JUNIOR

Overall View

Chemical and pressure
resistant sticker

Flashing red LED for
alarm: air speed too low

Alarm Mute push button

1 green LED lit up:

Airow OK

2216 60th Drive East • Bradenton, Florida 34203

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

7

Sensor Connection

Laboratory Airflow Monitor

TYPE JUNIOR

Contacts and Wiring

Power Supply:
115 VAC / 12 VDC input

INSTALLATION

1) Drill a Ø 23mm / 0.91" hole either in the top or side of the fume cupboard to allow sensor
positioning. Make sure sensor is not in a turbulent zone where the pressure can fluctuate but
where it can monitor stable changes in pressure. Attention should be paid to dead zones near the
top of the fume cupboard.

2) Proceed with wiring as seen on page “Contacts & Wiring”.

3) Position and secure monitor to service panel of the fume cupboard with the two self-tapping

screws supplied. Do not forget to position ‘O’ ring seal into the moulded groove in the back of
the face plate.

SENSOR RECALIBRATION PROCEDURE

If you experience difficulties with monitor calibration, you may need to recalibrate sensor itself by
following this procedure:

1) Connect sensor to energized monitor. Place sensor in a sealed bag to ensure no air is travelling

through it.

2) Push simultaneously for about 10s. Green and Red LED illuminates.

3) Remove sensor from bag and place into the fume cupboard.

4) Push simultaneously for about 10s. LED red is off, validating new sensor calibration.

2216 60th Drive East • Bradenton, Florida 34203

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

8

Laboratory Airflow Monitor

TYPE JUNIOR

Contacts and Wiring

MAINTENANCE

Front plate and stickers of airflow monitor may be cleaned with mild soap and water on a damp
cloth to remove finger marks, oils and residue. Do not use abrasives. Do not allow liquids to enter
the plastic casing. Dry the monitor thoroughly after cleaning.

TROUBLESHOOTING

PROBLEM CHECK

No indicators Power supply may not be plugged into AC supply.

Improper alarm set point Airflow sensor is factory precalibrated at 0.5 m/s or 100 FPM. Field

reading may be different if sensor is not properly located or hood
design affects stable airflow. If intended air speed is different than

0.5 m/s / 100 FPM or if actual anemometer reading is different,
follow Sensor Recalibration Procedure page 1.

WARRANTY

PLASTEC® Ventilation, Inc. warrants its equipment, products and parts, to be free from defects in
workmanship and material under normal use and service for one year after delivery to the first user.
Product must be returned to point of purchase, with dated bill of sale, within one year of purchase.
If factory return is required, please contact distributor first.

2216 60th Drive East • Bradenton, Florida 34203

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

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