Green-air-products CDMC-7 User Manual download pdf

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

CDMC-7

P.O. Box 1318 Gresham Or. 97030 USA

1-800-669-2113 Fax 1-503-663-1147

info@greenair.com 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 off, 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 "Off" 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.

To 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

1 2

Summary of Contents

Page 1 - Operation Manual

Specifications for CO2 MonitorMethod - Dual Beam Absorption InfraredSample Method - Diffusion or flow through (50 - 100 ml/min)Warranty - 18 months pa

Page 2 - Basic Hook Up Procedure

Exhaust Syncronized Operation1. Plug the CDDS-2 sequencers power cord into a 120 volt outlet.2. Plug the CO2 monitors transformer into a 120 volt ou

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