KMC Controls SAE-1162 - Manual (Page 8)

SAE-1111/1112/1162 Carbon Monoxide (CO) Detectors 8 Installation Guide
NOTE: The sensor must be continuously powered
for at least 1/2 hour prior to calibration.
NOTE: If the “0 Filter” option is enabled, disable it
in the menu temporarily for the calibration.
(See Configuration on page 4 .)
NOTE: The ZERO and SPAN potentiometers are
located on the edge of the sensor board.
NOTE: Attach the tubing as described and
illustrated above.
NOTE: Properly recalibrating the SAE-1162 duct
sensors shipped before August 2014 is more
difficult. For those earlier units with different
sensor boards (without the gas tube port
receptacle), it is recommended to disable
the ReCal mode, set the Fault Mode time to
3 years, and then replace the SAE-1162 with
a new or factory-recalibrated unit when the
time has expired.
1. Calibrate the sensor first in clean air with no CO
gas present by adjusting the ZERO potentiometer
on the sensor board until a 4 mA (or 0 VDC) out-
put is obtained and the LCD displays 0 ppm.
2. Turn the regulator on/off knob fully off, attach it
to the 250 ppm gas bottle, and firmly tighten the
regulator by hand.
3. Moisten the sponge and squeeze out any excess
water. Place the sponge in the cap so that it will
not touch the sensor but does not plug the hole
in the side of the cap. (The sponge will ensure the
gas is in the right humidity range.)
4. Attach the cap to the port over the sensor. (If the
gas cap is too loose on the sensor port, wrap elec-
trical tape around the cap.)
5. Slowly turn the valve knob on the regulator to let
the gas begin flowing. The regulator will restrict
the flow rate to the specified 200 ml/min.
6. Wait for 5 minutes and then adjust the SPAN
potentiometer on the sensor board until the LCD
reads 250 ppm (or the CO concentration of the
gas cylinder).
7. Close the valve on the tank.
8. Calibration is complete. Reset the ReCal Mode if
it is enabled.
Calibration
The sensor may also be calibrated or verified with
CO gas as needed. This requires a field calibration
kit consisting of a bottle of gas (e.g., 250 ppm CO), a
tank pressure regulator with flow restrictor, and the
necessary tubing to supply the gas into the sensor.
Calibration can be done at 68–80° F (20–27° C). The
device cover must be opened to perform an actual
calibration.
For the SAE-1111/1112 space CO detectors, verifica-
tion (of the calibration) with gas can be done without
removing the device cover. Simply apply gas using
the calibration cap attached directly to the port on
the cover and monitor the output signal or LCD. For
the SAE-1162 duct sensor, open the cover to access
the port.
SAE-1111/1112
SAE-1162
(shipped after August 2014)