View fan field-calibration - Johnson Controls - LIT-12014081 - RA-1270 - Airflow Measuring Station - AFMS

RA-1270 Advanced Thermal Dispersion Fan Inlet Airflow and Temperature Measuring System Technical Bulletin

Brand
Johnson Controls
Product name
AFMS
Document type
Technical Bulletin
Document number
LIT-12014081
Revision date
2022-08-04
Language
English

Procedure

Use this process to view the gain and offsets calculated during the automatic field-calibration process.

To view fan field-calibration, complete the following steps in the Supervisor Menu:

  1. Navigate to View Field Cal and press ENTER. The device prompts to start viewing the field-calibration values calculated for sensor 1 of the fan. The display shows the monitor and sensor assigned to the selected fan’s sensor. Press ENTER to view the field-calibration values.
  2. The device displays the measured value entered during calibration and the reference point recorded by the sensor for each calibrated point. Press ENTER to advance to the next screen or press ESC to go back one screen. The device displays the number of points selected during calibration.
  3. If only 1-point was selected during calibration, only one gain displays. If so, skip to Step 4. The device displays the gains calculated during calibration. If 2-points was selected during calibration, only one gain displays. If 3-points was selected during calibration, two gains display. Press ENTER to advance to the next screen or ESC to go back one screen.
  4. The device displays the offsets calculated during calibration. If 2-points was selected during calibration, only one offset displays. If 3-points was selected during calibration, two offsets display. Press ENTER to advance to the next screen or press ESC to go back one screen.
  5. If Sensors per Fan is set to 2, repeat Step 1 to Step 4 for the second sensor assigned to the fan.