System Sensor CDM100M User Manual

CD100M

Hand Held CO2 and Temperature Monitor
User Manual

Introduction

The sensor is an easy-to-use hand-held
CO2/Temperature monitor. The unit provides
stable, highly accurate readings due to our
patented dual beam NDIR technology.
Equipped with a 0-4V output, the unit is per­fect for long-term monitoring/recording.

The unit features a large, easy-to-read dis­play with a push-button interface which al­lows for easy calibration, quick adjustments
for altitude correction, and simple toggling
between °C and °F temperature readings.

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Features

1. Lightweight- Made of ABS Plastic. This
durable, lightweight plastic adds protection
while weighing less than one pound.

2. Display - The large display allows for CO
and Temperature readings at a glance. The
display also allows for adjustments to mode
settings using the push button interface.

3. Soft Touch- Attractive, gives comfort
and extra durability.

4. Up/Down - Used to increase or de­crease values while in the edit mode.

5. Mode - Toggles between the menu options.

6. Power - Turns the power on and off.

7. Enter - When toggling between menu op­tions, the E nter button will select desired menu
option for editing (e. g. Altitude settings). After
changes have been made, the Enter key will
also confirm s ettings and return to the main menu.

8. Calibration Port - Used for gas connec­tion during calibration.

9. Calibration Activation Switch ­Located in the battery compartment, this
switch is used for activating the calibration
process for CO

10. Voltage Output- The sensor is
equipped with an output for datalogging.

11. Built-in Kicks tand- For continuous
monitoring. The built-in kickstand simply
swings out from the base to support the moni­tor in an upright position.

12. Power Connection - For connecting the
supplied 6V power adapter.

13. Battery Compartment - 4 AA Batteries
are required for portable operation.

14. Battery Cover

or Temperature.

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Display

Listed below are the modes of operation
visible on the display and accessible
through the on-board buttons.

Warm-Up Mode - When the power button
is pressed, the monitor enters a one minute
warm-up indicated by the word WARM-UP
in the upper left corner.

Normal Operating Mode - After warm-up
the sensor will stabilize and display current
conditions.

Elevation Settings Mode - This feature al­lows the user to correct the monitor for el­evation changes.

Calibration Settings Mode - Allows user
to set the CO
when performing a calibration.

Calibration in Prog Mode - Displays
when calibration is in progress.

Low Battery - Displays when the power
source is low.

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Start-Up

Battery Operation - For portable use, the
monitor operates on 4 AA batteries. E x­pected battery life is as follows:

Normal (Non-Alkaline)..Up to 50 hours

Rechargeable............Up to 60 Hours

Industrial Alkaline ...Up to 70 Hours

If the monitor will be used frequently, we
recommend rechargeable batteries. The ini-

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tial investment may seem costly but may
quickly pay for itself.

Battery Ins tallation - Remove the battery
cover (located on the back) by pressing the
pressure clip (located on the bottom near
the kickstand) and pull upward.

Follow the battery diagram imprinted on the
plastic on the back cover for proper installa­tion. R eplace battery cover when battery
installation is complete.

Low Battery - Depending on the battery, a
warning signal will flash (indicated by the
blinking Low Battery LCD) when there is
less than 30 minutes of battery life. At this
point the batteries should be replaced or the
AC adapter should be used as a substitute.

If operation continues, the unit will become
inoperable and only the Low Battery will be
blink on the LCD display.

AC Power - The sensor is shipped with a
6V DC 500mA AC/DC adapter.

When possible, we suggest using the
power adapter to guarantee continuous
power during long term monitoring or
datalogging operation.

To use the AC adapter, connect the plug
into the back of the unit and plug the trans­former into any standard wall outlet.

Use the supplied adapter. Using

the wrong adapter may cause

concentration or Temperature

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NOTE

damage to the unit.

Operation

Power-Up

1. Press the Power Button.

2. A 2 second delay will occur before the
display becomes visible.

3. 10 seconds will elapse before current
CO2 readings are displayed.

4. “Warm-up” will display for approxi­mately one minute. During this one
minute warm-up, adjustments can not be
made to the sensor.

Elevation Correction - The sensor is
shipped with the elevation setting set at
“zero” or sea level. The sensor, like any
other gas measuring device is directly af­fected by altitude changes. If you are at an
altitude greater than 500 feet, an adjustment
should be made to assure sensor accuracy.
To change the default setting using Elevation
Correction follow the steps below.

1. While in Normal Mode press the “Mode”
button once. The Elevation LCD will be­gin blinking.

2. Press Enter.

3. Pres s mode to toggle the elevation reading
between feet (ft) and meters (m)

4. Use the Up/Down button to adjus t the alti­tude. The altitude can be adjusted in incre­ments of 500 (feet) or 100 (meters). Once
the correct altitude is set, pres s Enter to
lock the setting and return to normal mode.

Display in Fahrenheit or Celsius - To
change the temperature to read in Celsius or
Fahrenheit, or to turn the temperature dis­play off, use the Up or the Down button.

Featuring

TE C H N O L O G Y

Stand-alone Monitoring - Once the batter­ies have been installed and the Elevation
correction has been made (as described in
the steps above), the sensor will begin to
accurately display current room conditions.

Kickstand - The sensor is equipped with a
kickstand located on the base of the unit.
For desktop monitoring, pull the kickstand
out to prop the unit on an angle.

Monitoring using an External
Datalogger - Voltage outputs for both CO
and temperature are available via an RJ-45
jack on the rear of the unit.

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If power is lost during operation, battery op­eration will not function as a back up.

Calibration (CO2)

1. The calibration procedure will last ap­proximately 5 minutes. Before performing
the calibration procedure, remove the bat­tery cover (see “Battery Installation”) to
provide access to the CO2 calibration ac­tivation switch. Connect the supplied AC
adapter to the back of the sensor. If you
do not have the AC adapter, new batter­ies should be used.

2. Power up the sensor and wait for the
Warm-up to end.

3. Next verify the Elevation correction has
been set. R efer to the steps in Elevation
Correction for procedure.

4. Once the Elevation is verified, press the
Mode button twice. The Calibration mode
will begin blinking.

5. Press Enter.

6. Use the Up/Down Rocker button to adjust
the lower reading on the display to the
current ambient conditions. Pressing the
button once will change the readings in
increments of 10 ppm. To increase the
speed, press and hold the button.

For best accuracy, a reference or

known concentration of CO

should be used when adjusting

7. Next, on the backside of the unit locate
the push button switch (under the battery
cover, in the small round hole to the right
of the connector jack), use a small
pointed object to depress and hold the
switch for 5 seconds. The Calibration
light will begin to blink.

8. Press Enter.

9. Calibration In Progress will begin to
blink. At this point the unit will program it­self based on the CO2 value that was in­put in Step 6. The calibration process will
take approximately 5 minutes.

When Calibration is complete, the display
will return to the steady Calibration
mode. Press Enter to return to the nor­mal operation mode.

NOTE

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the reading.

T emperature
Adjustment

Use this procedure to adjust the temperature
output when, for example, you wish to have
the temperature output match a reference sen­sor. The accuracy of a field adjustment is de­pendent upon the stability of the environment
in which the procedure is performed, and
upon the accuracy of the reference sensor.

1. Before performing the temperature adjust­ment, connect the supplied AC adapter to
the back of the sensor. If you do not have
the AC adapter, new batteries should be
used.

2. Power up the sensor and, using the
kickstand, place it on a flat surface in a
stable environment relatively free of
drafts or temperature changes. Wait 30
minutes for the unit to fully equilibrate with
the environment. Do not hold the unit in
your hand during this period.

3. Press the Mode button three times. The
word “TEMPERATURE” at the bottom of
the display will begin blinking.

4. Press Enter. Both the word “TEM­PER ATURE” and the numeric tempera­ture display will begin blinking in unison.

5. Use the Up/Down Rocker button to ad­just the temperature reading to match the
reference.

6. Press Enter. The temperature offset is
immediately adjusted, the blinking stops,
and the unit is now in normal operating
mode.

Specifications

Method

Dual Beam Absorption Infrared™

Sample Method

Diffusion or flow through (50 - 100
ml/min)

Warranty

18 months parts and labor

Performance

CO2 Channel
Measurement Range

0-4,000 ppm voltage output
0-10,000 ppm display

Sensitivity

± 1 ppm

Accuracy

±50 ppm or ±5% of reading,
whichever is greater

Repeatability

±20 ppm

Temperature Dependence

±0.1% of reading per °C or ±2 ppm
per °C, whichever is greater,
referenced to 25°C

Pressure Dependence:

0.13% of reading per mm Hg
(Corrected via user input for
elevation)

Annual Drift

± 20 ppm typical

Response Time

<60 seconds for 0..90% of step
change

Warm-Up Time

<60 seconds at 22°C

Operating Conditions

32-122°F (0-50°C)
0-95% RH, non-condensing

Storage Temperatures

–40 to 140°F (-40 to 60°C)

Calibration Interval

12 months, offset adjustment using
single gas at 0-1000 ppm CO2. Full
factory calibration available

Temperature Channel

Temperature Range

Voltage output 32 to 104°F (0 to 40°C)
Display 32 to 122°F (0 to 50°C)

Calibration Interval

12 months, offset adjustment using
temperature standard at 50 to 86°F
(10 to 30°C). Full factory calibration
available

Display Resolution

0.1°F (0.1°C)

Display Options

°F, °C, or Off. Set with panel button.

Accuracy

±2°F (±1°C)

Response Time

20-30 minutes (case must equilibrate
with environment)

Output - Analog

CO2

0-4 VDC, 1mV/ppm (4,000 ppm max)

Temperature

0-4 VDC linear, 32-104°F (0-40°C)

Output Impedance

100 Ohms

Wiring Connection

Via RJ-45 to DB9 serial port cable

Display

LCD with independent CO2/
temperature readings (panel buttons
set elevation, °F/°C, calibration
functions)

Power Supply

Battery Type

Four AA batteries, not included

Battery Operation

80 hours (alkaline)

External

6 VDC from external AC/DC adapter,
included

Power Requirements

100 mA Peak, 20 mA average from 6V

Certification

FCC Class 15 Part B

Note

Specifications subject to change
without notice. Covered by United
States Patents: 5,060,508 and
5,163,332

Warranty

System Sensor warrants its enclosed sensor to be free from defects in materials and
workmanship under normal use and service for a period of 18 months from date of
purchase by the original owner. System Sensor makes no other express warranty for this
sensor. No agent, representative, dealer, or employee of the Company has the authority
to increase or alter the obligations or limitations of this Warranty. The Companyís
obligation of this Warranty shall be limited to the repair or replacement of any part of the
sensor which is found to be defective in materials or workmanship under normal use and
service during the 18 month period commencing with the date of purchase by the original
owner. After phoning System Sensorís toll free number 800-SENSOR2 (736-7672) for a
Return Authorization number, send defective units postage prepaid to: System Sensor,
Warranty Service, RA#_______, 3825 Ohio Avenue, St. Charles, IL 60174. Please
include a note describing the malfunction and suspected cause of failure. The company
shall not be obligated to repair or replace units which are found to be defective because
of damage, unreasonable use, modifications, or alterations occurring after the date of
manufacture. In no case shall the Company be liable for any consequential or incidental
damages for breach of this or any other Warranty, expressed or implied whatsoever,
even if the loss or damage is caused by the limitation of incidental or consequential
damages, so the above limitation or exclusion may not apply to you. This Warranty
gives you specific legal rights, and you may also have other rights, and you may also
have other rights which may vary from state to state.

P/N 62507B
10599

System Sensor

3825 Ohio Avenue St. Charles, IL 60174
1-800-SENSOR2 (736-7672) Fax: [phone]

Featuring

Absorption Infrared™ is a trademark of Engelhard Sensor Technologies

Telaire®is a registered trademark of Engelhard Sensor Technologies