SECTION 5: SYSTEM CONTROL ELECTRONICS
YZ Systems Milton Roy • 201 Ivyland Road • Ivyland, PA • USA • 18974 • P: 281.362.6500 • www.yzsystems.com
NJEX ZEO Version 04/13/2021
Page 47
3.4
-
Bulk
Tank
Level
Calibration
3.4.1.
To begin calibrating the
Odorant Tank Level, press the
Select Key from the home screen to
open the Main Menu
3.4.2. Navigate to the Calibration Menu
and press the Select Key
3.4.3. Select the Odorant Tank Menu
3.4.4. Select the Level Sensor Type. The
N-400 controller supports a YZ
Systems provided gauge or a
customer supplied Analog level
sensor (4-20mA). The YZ gauge
does not require calibration.
3.4.5. When the Analog sensor option is
selected, the option to calibrate is
displayed on the screen.
3.4.6.
Select Zero to calibrate the zero set
point. When Zero is selected, the
calibration instructions are displayed
on the screen. The N-400 controller
is programmed for 0% tank fill to
directly correspond to 1.00 VDC (4.0
mA) at the flow input terminal board
TB11 terminals #2 and #3. Refer to
the
3.4.6.1. To calibrate the zero set point,
apply 1.00 VDC (4.0 mA) to
TB11
terminal
#2(+)
and
terminal #3(-).
3.4.6.2. After the signal has been
applied, navigate to the Apply
Calibration selection and press
select.
3.4.6.3. If calibrated reading is within the acceptable calibration range, the calibration will
be applied and the box next to Calibrated will display a check mark.
Note
: If the controller does not accept the calibration value, the voltage at the input terminal is
outside of the calibration range of 2.4 mA - 5.6 mA.
Figure 30 Level Sensor Calibration - Analog
Sensor Zero
Figure 30 Level Sensor Calibration - Rochester
Gauge
