Page 4
CO2 Span
2000 ppm
The CO
2
Span value controls the analog output scaling. CO
2
span can be changed
from 1000 to 10,000 ppm in 500 ppm increments using <UP> or <DOWN>. If CO
2
Span = 2000 ppm, then the output signal is scaled 0-2000 ppm = 4-20 mA. Factory
default is 2000 ppm.
<MENU>
Press to advance to next menu item
1. SPAN
Altitude
0 m
Self-Cal
ON
The Altitude value allows CO
2
compensation for local atmospheric pressure and
altitude and ensures the highest CO
2
accuracy. Altitude can be changed from 0 to
2550 meters in 50 meter steps using <UP> or <DOWN>. It will take a few moments
to change the setting, then the menu will advance to the next step. Factory default
is 0 m (sea level).
The Self-Cal feature <MENU> when enabled requires the sensor to be exposed
to fresh air for at least one hour every twenty-four hours. When first installed the
sensor requires a minimum of seven days of operation with fresh air exposer daily
to allow the algorithm to adjust for self-calibration. Default for device is having
this feature enabled “ON”. If disabling this feature a manual calibration should be
performed to ensure accuracy of the device.
<MENU>
Press to advance to next menu item
<MENU>
Press to advance to next menu item
3. ALTITUDE
2. SELF CALIBRATION
V Output
0-5 Vdc
The V Output value controls the analog output voltage span if the PCB switch is set
to VOLT. V Output can be set to either 0-5 Vdc or 0-10 Vdc using <UP> or <DOWN>.
This setting has no effect if the PCB switch is set to mA. Factory default is 0-5 Vdc.
<MENU>
Press to advance to next menu item
4. OUTPUT VOLTAGE SPAN
Output
Direct
The Output value controls the analog output signal direction. Use <UP> or
<DOWN> to change the setting from Direct (4-20 mA, 0-5 Vdc or 0-10 Vdc) to
Reverse (20-4 mA, 5-0 Vdc or 10-0 Vdc) if reverse action is required. Factory default
is Direct.
<MENU>
Press to advance to next menu item
5. OUTPUT SIGNAL DIRECTION
When either the <UP> or <DOWN> keys are pressed, the LCD temporarily changes to display the
temperature setpoint value in °C or °F as set by Temp Units in the Setup Menu. The display will show the
previous temperature setpoint setting such as 22 ºC or 77 ºF. If no other action is taken for 5 seconds
then the device will reset to normal operation. While the display is still flashing the setpoint can be
modified by pressing the <UP> or <DOWN> keys to increase or decrease the setpoint value. The LCD
will update to show the new setpoint and the output signal will update accordingly. When the desired
setpoint is shown on the LCD, leave the unit for 5 seconds to reset to normal operation and save the
new setting. As the setpoint is changed the SETPNT output signal will change in resistance. The display
midpoint and step resolution can both be programmed using the Setup Menu.
SETUP MENU
The device has several parameters that can be configured locally via the Setup menu using the keypad
and LCD. Any changes made are saved in non-volatile memory and are restored in case of a power loss.
The menu can be accessed at any time after the start-up mode and if there is 5 minutes of inactivity the
menu will close and normal operation will continue.
To enter the menu, press and release the <MENU> key. This will enter the Setup Menu step 1, pressing
the <MENU> key a second time saves the setting and advances to step 2. Each press of the <MENU> key
saves the current setting and advances the menu item. The <UP> and <DOWN> keys are used to make
changes to program variables by scrolling through the available options. The first column below shows
what will be displayed on the LCD, including the default value.
<MENU>
Press and release the <MENU> key to enter the Setup Menu
Copyright © Greystone Energy Systems, Inc. All Rights Reserved Phone: +1 506 853 3057 Web: www.greystoneenergy.com
IN-GE-CD2RMCXXX-04
