Green Air Products CDMC-7 - Manual

Specifications for CO2 Monitor
Method - Dual Beam Absorption Infrared
Sample Method - Diffusion or flow through (50 - 100 ml/min)
Warranty - 18 months parts and labor
Performance of C02 Channel
Measurement Range - 0-4,000 ppm output (0-10,000 ppm display)
Sensitivity - ± 1 ppm
Accuracy - ±50 ppm or ±5% of reading
Repeatability - ±20 ppm
Temperature Dependence - ±0.1% of reading per °C or ±2 ppm per °C, @ 25°C
Pressure Dependence - 0.13% of reading per mm Hg
Annual Drift - ± 20 ppm typical
Response Time - <60 seconds for 90% of step change
Warm-Up Time - <60 seconds at 22 °C
Operating Conditions - 32 to 122°F (0 to 50°C) 0-95% RH, non-condensing
Storage Temperatures - (-40 to 140°F or -40 to 60°C)
Calibration Interval - 12 months, full factory calibration available
Temperature Channel
Voltage output - (32 to 104°F or 0 to 40°C)
Display - (32 to 122°F or 0 to 50°C)
Display Resolution - (0.1°F or 0.1°C)
Display Options - °F, °C, or Off. Set with panel button.
Accuracy - ±2°F or ±1°C
Response Time - 20-30 minutes (case must equilibrate with environment)
Calibration Interval - 12 months, full factory calibration available
Output - Analog
C02 - 0 to 4 VDC, 1mV/ppm (4,000 ppm max)
Temperature - 0 to 4 VDC linear, 32-104°F (0-40°C)
Output Impedance - 100 Ohms
Wiring Connection - Via RJ45 to (accessory cable 2070 or 2071)
Output - Digital
Wiring Connection - Via RJ45 to DB9 serial port cable
Display - LCD with independent CO2/ temperature readings
Power Supply
Battery Type - four AA batteries, not included
Battery Operation - 48 hours (alkaline)
External - 6 VDC from external AC/DC adapter included
Power Requirements - 400 mA Peak, 20 mA average from 6V
Certification - FCC Class 15 Part B
Accessories
2070 Datalogging cable for analog output
2071 Datalogging cable Recordaire
2075 Calibration kit
1058 Recordaire data logger, 4-channel
105BGSW VG Graphing software
All specifications and instructions subject to
change without notice. Protected by United
States Patents - 5,060,508 and 5,163,332.
Carbon Dioxide
Monitor Controller
Installation and
Operation Manual
C D M C - 7
P.O. Box 1318 Gresham Or. 97030 USA
1-800-669-2113 Fax 1-503-663-1147
[email protected] www.greenair.com
Feature Identification
The SENSOR button toggles between
photo sensor “on” and “off” modes. If
the activated LED is lit the controller
will operate only when light is present.
This is the normal setting for CO2
enrichment. This mode will defeat
enrichment during darkness periods.
When the activated LED is of f, the
controller will operate continuously
regardless of the photoperiod.
The MODE button switches between CO2 enrichment or CO2 venting
functions. Enrichment is the normal mode for CO2 enrichment operations.
Venting mode is for purposes of removing excessive levels of CO2. This is
used primarily for mushroom cultivation or HVAC control where CO2 is to be
removed from the area.
The SET button allows you to choose an enrichment level setpoint and
hysteresis value. The hysteresis is the value between "On" and "Of f" functions.
This value determines at what point the CO2 equipment will turn "Off". In the
example below a 50 ppm hysteresis setting will turn CO2 "Off" at 1050 ppm.
Example : Set point = 1000 ppm Hysteresis = 50
In the example if the CO2 level falls below the setpoint (1000 ppm) the CO2
equipment outlet will come "On" and enrichment will continue until a level of
1050 is reached and then it will shut off.
T o make setpoint adjustments press SET and the LED will flash the current
setpoint value. Press the UP or DOWN buttons to achieve any desired value.
Press SET again to enter your hysteresis. The system will return to operation
mode automatically after five seconds and continuously display the current
CO2 level.
The CDDS-2 Carbon Dioxide Digital Sequencer features Overshoot Protection
Logic programming which will automatically maintain the proper dosing
parameters necessary to keep any size area enriched within a set tolerance
regardless of the particular characteristics of the enclosure. If on the initial
cycle the controller senses that excess CO2 has been administered it will
automatically compensate for the next dosage. This will assure that the proper
levels are constant and maintained at all times with complete accuracy .
This booklet will discuss the features and functions of the Green Air Products
Infrared Carbon Dioxide Monitor and Digital Event Sequencer system. This
system is designed to detect atmospheric CO2 levels and function CO2
producing equipment according to user programmable set points. It employs
the most advanced detection providing precise, accurate and dependable
performance.
Introduction
Features
This carbon dioxide monitor controller model CDMC-7 package includes the
CDM-7001 monitor with LCD display and a CDDS-2 digital sequencer with
event programmer and photo sensor. The monitor samples atmosphere once
each second and displays current CO2 values in parts per million (ppm) on its
display screen, while transmitting linear millivolt signals to the Digital Event
Sequencer logic translating circuits. The sequencer then interprets these
signals and functions the CO2 equipment outlet according to predetermined
values. The built in photo sensor automatically defeats the CO2 equipment
outlet during darkness periods.
Description
Install the monitor indoors in a location representing an even air mix from
plant zone atmosphere. Do not locate near heaters, drafts or CO2 producing
equipment. Avoid locations where sensor may be vulnerable to impacts,
vibrations or water. Breathing near the sensor will cause high CO2 readings.
Mount the Sequence Controller in a convenient, dry location near a 120V
power outlet. All valuable electrical equipment should be plugged into a surge
protection device. Approved for indoor use only. For information about
advanced settings and features of this product, or using this sensor with a
device other than the CDDS-2 controller, or for complete instructions manual
please refer to www.greenair .com/cdmc.htm