System Sensor CDM100M - Manual (Page 2)

Calibration (CO
2
)
1. The calibration procedure will last ap-
proximately 5 minutes. Before performing
the calibration procedure, remove the bat-
tery cover (see “Battery Installation”) to
provide access to the CO
2
calibration ac-
tivation switch. Connect the supplied AC
adapter to the back of the sensor. If you
do not have the AC adapter, new batter-
ies 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. Refer 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.
P/N 62507B
10599
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.
NOTE
For best accuracy, a reference or
known concentration of CO
2
should be used when adjusting
the reading.
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 it-
self based on the CO
2
value that was in-
put 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 nor-
mal operation mode.
T emperature
Adjustment
Use this procedure to adjust the temperature
output when, for example, you wish to have
the temperature output match a reference sen-
sor. The accuracy of a field adjustment is de-
pendent 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 adjust-
ment, 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 “TEM-
PERATURE” and the numeric tempera-
ture display will begin blinking in unison.
5. Use the Up/Down Rocker button to ad-
just 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.
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 CO
2
/
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
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)
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.
Warranty
Specifications
Absorption Infrared™ is a trademark of Engelhard Sensor Technologies
Telaire ® is a registered trademark of Engelhard Sensor Technologies
Featuring
System Sensor
3825 Ohio Avenue St. Charles, IL 60174
1-800-SENSOR2 (736-7672) Fax: 630-377-6495