APZ 2030
Setup Manual
This setup manual applies to APZ 2030 differential pressure transmitter. It is a
supplement to the Operation Manual.
Terms and abbreviations used in the manual:
Span - measurement range;
URL - upper range limit;
LRL – lower range limit; SW1, SW2 – switch contacts 1 and 2.
1 General information
Depending on your goals and operating conditions you can change factory
settings accordingly. Buttons described in Table 1 allow selecting operation
algorithm and setting parameters.
Table 1 - Control buttons
Button
Action
ENTER / MENU - opens main menu (press and hold for 2 s) /
cycles through main menu items or saves values to memory
Up - increases numerical values of parameters or changes units
of measurement when in operating mode (Table 2)
Down - decreases numerical values of parameters or changes
units of measurement when in operating mode (Table 2)
ESC - selects editing mode (values changing) for main menu
items / cancels changes made; hold for 2 s to leave menu
See Table 2 for the available units of measurement.
Table 2 - Units of Measurement
Displayed
Unit of measurement
Pa
pascal (Pa) – factory settings
kPa
kilopascal (kPa)
mbar
millibar (mbar)
Bar
bar
mWc
meter of water column (at 20 C)
kgf/cm2
kilogram force per square centimeter
PSI
pounds per square inch
See section 3 of Supplement A for available programming instructions.
2 Factory settings
The standard settings are as follows.
- output signal increases linearly, in proportion to inlet pressure;
- pressure unit of measurement - Pa;
- switch 1 operating mode - WINDOW;
- switch 2 operating mode - HYSTERESIS;
- switch 1 upper level / switch 2 trigger level (switching-on) - 67% / 75% of
span;
- switch 1 lower level / switch 2 trigger level (switching-off) - 33% / 25% of
span;
- switching-on delay (affects both switches) - 0 ms.
To see the settings of the connected transmitter, press and hold ENTER /
MENU button for 2 s. The display will show current settings and switch to the
SET mode. Press the button again to browse the menu.
3 Setting up operation parameters
3.1 Press ENTER / MENU button and hold it for 2 s to enter the setup mode.
3.2 There appears the word SET in the top left corner; top right corner has the
name of the parameter, below it - its code or value (Figure 1).
Figure 1 - Displayed elements
Operation parameters setup mode
(R1HI – signal threshold for SW1 switch contacts activation)
Press ENTER / MENU button to browse the parameters. Press ESC to edit a
parameter; its code or value starts flashing.
Press UP and DOWN buttons to change code/value; press and hold any of them
to have the figure change rapidly in the appropriate direction, release when the
desired value is on the display.
Note: acceleration of the value increase or decrease grows gradually
when you hold UP or DOWN button.
Press ENTER / MENU to save the desired value.
3.3 The device switches back to operation mode automatically after 10
seconds of inactivity.
Supplement A
Setup menu
See Table A.1 for all programmable parameters.
Table A.1 - Programmable parameters
Menu
item
Function
PSEL
Span values modification. See Table A.2 for span codes; enter the
appropriate code to set the desired span.
RESP
Response delay (affects both switches) in seconds. Values - from 0
to 9 seconds.
R1Md
Switch 1 mode selection (figure A.2):
0 - disabled; 1 - HYSTERESIS; 2 - WINDOW
R1HI
Switch 1: switching-on threshold / upper limit (contacts SW1).
Values - from 0 to 100% of span.
R1L0
Switch 1: switching-off threshold / lower limit (contacts SW1).
Values - from 0 to 100% of span.
R2Md
Switch 2 mode selection (figure A.2):
0 - disabled; 1 - HYSTERESIS; 2 - WINDOW
R2HI
Switch 2: switching-on threshold / upper limit (contacts SW2).
Values - from 0 to 100% of span.
R2L0
Switch 2: switching-off threshold / lower limit (contacts SW2).
Values - from 0 to 100% of span.
ZERO
Password (123) protects this parameter from accidental change.
The function eliminates asymmetry between channels that can
appear in the long run. ZERO calibration starts with equalizing inlet
pressure: P1+ and P2- are connected to each other or to
atmospheric pressure or to a fixed pressure source that gives the
value medium pressure should be checked against.
Switch response delay (RESP)
Switch response delay allows filtering out short-term pressure changes. The
switch does not change its state during the delay time after the pressure has
exceeded the threshold (Figure A.1).
Measurement range (PSEL)
Table A.2 contains span codes that can be applied; these spans fall within the
default measurement range the transmitter was given at the factory following
customer's instructions.
www.piezus.ru
PRESSURE TRANSMITTER
