Pambry PED-1721-NO2 User manual

Clip the device onto your clothing and keep it exposed to your environment. Do NOT
place in your pocket as this will adversely affect the readings and block the line of sight of
the ALERT warning lamp.
The device constantly checks the Air Quality Index (AQI) levels and respond accordingly
to the measured NO2/O3levels (see section “How does it work?”).
Air Quality Index Levels Described by the EPA
Air Quality Level of Concern and O3Concentration 1h NO2Concentration
Index (AQI) Air Quality Condition average [ppb][a] 1h average [ppb
0 to 50 Good 0-62 0-53
51 to 100 Moderate 63-124 54-100
Above 100 Unhealthy to Hazardous Above 125 Above 101
Battery
Compartment
Clip
Sensor
Power
Button
Alert
Lamp
Welcome to your new Personal Air Quality Alert level warning device
which is one of the family of Personal Alert devices manufactured
in the UK by Pambry Electronics Ltd. The other devices
relate to Noise Level, Noise Dose and Carbon
Dioxide (CO2- Indoor) measurements.
Key Features
n Self-contained unit
n Simple to use
n Long battery life
n Optical and Vibration alert
n Outdoor Nitrogen Dioxide
and Ozone monitoring
What is it?
Your device is a small battery powered unit that measures the OUTDOOR levels of
Nitrogen Dioxide and Ozone (NO2/O3) in real time and indicates whether the Air Quality
in your environment is acceptable or too poor (ie. safe or not safe). In this latter case you
should take steps to remove yourself to cleaner air environment or to use breathing
apparatus. As the unit measures real time levels, it can also be used to determine when
this apparatus is NO LONGER required.
How does it work?
Due to the nature of the sensor used in this device, an
automatic one-hour self-calibration is performed after each
power ON cycle (unless it was switched OFF for less than 15
minutes). During this time air quality level indication is not
available and ALERT lamp slow flashes BLUE.
Once the self-calibration process is finished, the unit start
sampling the Air Quality for 60 seconds and then ALERT
lamp slow flashes GREEN. The Air Quality measurement is
made by the built-in sensor and processed by the battery
powered internal electronics control unit.
When NO2/O3levels are above the pre-programmed
thresholds averaged over the 60 second sampling period, the
ALERT lamp changes from GREEN to AMBER or RED.
Each transition of the ALERT lamp to AMBER or RED also
triggers the vibrate alert for approximately 15 seconds. This
can be suspended by a short press of the Power button.
ALERT Lamp colour alerts are automatically suspended
should the Air Quality level improve and the NO2/O3
concentration values fall below the AMBER level.
Battery life is in excess of 120h and a Low battery indication
is shown by very short RED flashes of the ALERT lamp.
How do I use it?
Using the device is simplicity itself. Carefully insert your battery into the battery
compartment (located at the rear of the unit) taking note of the polarity markings.
A quality AA (LR6) alkaline type battery is recommended.
Press the Power button on the front face. The ALERT lamp will flash BLUE for 60
minutes (self-calibration) and then illuminate and flash according to the measured
Air Quality index.
IF ANY OF 2 (AMBER OR RED) WARNING STATES PERSIST, IT IS
IMPERATIVE YOU OBTAIN AND USE SUITABLE BREATHING PROTECTION.
ALTERNATIVELY REMOVE YOURSELF TO A CLEANER AIR ENVIRONMENT
After use, press and hold the power button until the ALERT lamp goes out.

Technical Specification
Measuring range: *AQI 0 to 500
Ozone (non-selective) 20 to 500 ppb
Nitrogen dioxide (non-selective) 20 to 500 ppb
Accuracy (without ±50 AQI
additional calibration)
Sample rate: 60s (values averaged over 60min)
NO2/O3threshold levels: ALERT Lamp O3Concentration NO2Concentration
(1 hour averaging) Colour ppb ppb
GREEN 0 - 62 0 - 53
AMBER 63 - 124 54 - 100
RED Above 125 Above 101
Calibration: Automatic in outdoor environment before every use
Warning lamp: Multi coloured LED, Red, Green, Amber, Blue
Warning lamp Lamp Flash
indicator states: Colour Duration
Self-calibration BLUE SHORT
Low battery RED SHORT
Normal (no alert) GREEN SHORT
Amber alert AMBER LONG
Red alert RED LONG
Vibration alert: Rotating type
Vibrate time: 15 sec
Battery: 1x AA LR6 alkaline
Battery life: > 120h
Dimensions: 71mm x 56mm x 18mm (23mm including clip)
Weight: 70g (with a battery)
Life time: 5 years
Environmental:
Temperature operation: -40 °C to +65 °C
Temperature storage: -50 °C to +70 °C (no battery)
Humidity operating: up to 90% RH, non-condensing
Humidity storage: up to 90% RH, non-condensing
*AQI Rating according to EPA for ozone and nitrogen dioxide.
PED-1746 - User Manual - v1 - April 2022
IMPORTANT NOTICE
These devices are sold with the intention
that a wearer can educate themselves about
their environment They are not intended
to make measurements as such but merely
indicate the risk to themselves of being in that
environment.
Personal Air Quality Alert – NO2/O3(Outdoor)
can also detect safety-relevant gases, however
the monitor is not designed to detect these
interferants reliably and therefore it is not
approved for use in any safety-critical or life-
protecting applications.
Pambry Electronics disclaims any liability for
any such use.
PAMBRY DISCLAIMER
Pambry Electronics reserve the right to change
specifications or update this user manual at
any time without prior notice.
Personal Air Quality Alert
- NO2/O3(Outdoor)
User Manual
PED-1721-NO2
Pambry Electronics Ltd
Pambry House, Units 7 & 8 Ventura Centre, Ventura Place,
Upton Industrial Estate, Upton, Poole, Dorset BH16 5SW UK
Tel: [phone] Email: [e-mail] www.pambry.co.uk
SAFETY INFORMATION
For safe practice only operate in accordance
with the instructions in this manual.
WARNING
To avoid personal injury,
follow the guidelines below:
• Do not remove cover.
• Use this device only as specified in this manual.
• Do not use around explosive gas or vapour.
• It is your responsibility to contribute to a
clean and healthy environment by using the
appropriate local return and collection systems.
• The symbol shown below indicates that
separate collection systems must be used for
any discarded equipment or batteries
marked with the WEEE Symbol.
!