ABB Endura APA592, Operating Instruction

Page: 58 / 108

Endura APA592
pH / Redox (ORP) transmitter 7 Operator Pages and Menus
56 OI/APA592–EN Rev. E
7.3.2 Calibrate
Used to calibrate the transmitter.
Calibrate Parameters
Parameter Description
Tx
Type
PV Manual Cal Reference procedure for calibration of the pH process value.
Options comprise:

1 Point Manual – see Table 7.2, page 58

2 Point Manual – see Table 7.3, page 59

Output Hold/Release – a quick access menu to hold or release the
current output
All
Auto Buffer Setup
pH
Buffer Type Selects the type of buffer used:

User-defined

ABB

NIST

DIN 19266

Merck

US Tech
Buffer 1 Value Enables selection of the Buffer 1 value based on Buffer Type .
Enabled when Buffer Type is not User Def .
Buffer 2 Value Enables selection of the Buffer 2 value based on Buffer Type .
Enabled when Buffer Type is not User Def .
User def Soln.1 Enables entry of a user-defined Buffer Table 1 with up to 5 temperature and
pH values.
Enabled when Buffer Type = User Def .
User def Soln.2 Enables entry of a user-defined Buffer Table 2 with up to 5 temperature and
pH values.
Enabled when Buffer Type = User Def .
Auto Buffer Cal Performs a two-point calibration based on Auto Buffer Setup and with
automatic sample stability checking – see Table 7.4, page 61.
If the sensor is removed from a hot or cold process allow it to normalize to
ambient temperature prior to calibration.
If the sensor cannot stabilize using automatic buffer calibration, perform a
manual calibration.
pH
2 Menu
Exit
Select
Calibrate