Owner's manual

SAE-1011/1012/1062 Carbon Dioxide (CO
2
) Detectors 4 Installation Guide
Set-Up
Warm-Up
1. Verify that the detector is properly wired, all
connections are tight, and the Output switch is in
the correct mA or Volt position.
2. Apply power.
The CO
2
sensor chamber light will ash on and o.
The LCD display will indicate the software version
number, the output signal type, the relay setpoint
(SAE-1012 only), and the CO
2
measurement range.
During the warm-up (of less than two minutes),
the output is xed at representing 500 ppm. After
the warm-up period the sensor will begin reading
the CO
2
level, output the correct analog signal, and
display the value on the LCD.
During normal operation, the sensor updates the
output and display every 4 seconds.
Menu Configuration
The menu is controlled by pressing buons on the
circuit board:
• Press and release the MENU buon to enter
the conguration menu. Then press the MENU
buon to step through the selections.
• Use the ROLL buons to make changes.
• No values are saved or changed until you press
the SAVE key. The SAVE buon saves the cur-
rent seing to memory and advances to the next
Menu item.
While in normal operation, to enter the congura-
tion menu, press the MENU buon:
1. OUT_HIGH 2000 PPM: (Default CO
2
level
range is 0–2000 ppm.) The span can be changed
from 1,000 to 7,500 ppm measured in 500 ppm
increments. For maximum accuracy in typical
applications, a narrower (e.g., the default) range
is recommended.
 PresstheMENUbuon.
2. ALTITUDE 0FT: (Default altitude is 0 feet.) The
range is 0 to 5,000 feet measured in 500-foot
increments. Change for local altitude correction
for maximum accuracy. (Altitude/elevation for
any particular location can be found at such
sources as www.earthtools.org.)
 PresstheMENUbuon.
3. AUTO_CAL ON: (Default is ON.) This corrects
sensor drift to beer than ± 10 ppm per year.
ON is recommended for locations where CO
2
levels will be close to 400 ppm at least once a
day. If a building is continuously occupied for 24
hours, and the CO
2
level is fairly constant, then
this should be set to OFF. (See the Calibration
section!)
 PresstheMENUbuon.
4. RELAY SP 1000 PPM: (Relay trip setpoint default
is 1,000 ppm.) The range is 500 to 5,000 ppm
measured in 100 ppm increments. (For SAE-1012
only.)
 PresstheMENUbuon.
5. RELAY HY 50 PPM: (Relay hysteresis
“deadband” default is 50 ppm.) The range is 25 to
200 ppm measured in 25 ppm increments.
PresstheMENUbuon.
6. RELAY TEST OFF: (Relay status default is OFF.)
For testing purposes, use the ROLL buon to
toggle the relay ON or OFF.
PresstheMENUbuon.
7. OUT TYPE 0-5 VDC: (Voltage output default
is 0–5 VDC.) Use the ROLL buon to toggle 0–5
VDC or 0–10 VDC. If the switch is set to mA, then
4-20 mA is displayed.
PresstheMENUbuon.
8. OUTPUT TEST OFF: (Default is OFF.) For
testing purposes, use the ROLL buon to toggle
the output OFF (for normal operation), MIN
(minimum output), or MAX (maximum output).
PresstheMENUbuon.
9. CALIBRAT 1000 PPM: Used in calibration. See
the Calibration section.
PresstheMENUbuon.
10. BACKLIGHT ENABLE: (Default is ENABLED.)
When enabled, the backlight is always on; when
disabled, it never illuminates.
 PresstheMENUbuon.
11. RESTORE DEFAULTS: Press the SAVE key to
restore all the original factory seings.
 PresstheMENUbuon.
12. MENU EXIT: Press the SAVE buon to exit the
menu and return to normal operation or MENU
to repeat the menu.