Ph Interface; Connecting The Ph Interface; Calibrating The Ph Interface; Technical Specifications - Ph-Interface - Priva Compass Installation Manual

pH interface

Connecting the pH interface

The installation and maintenance of the pH sensor is described in detail in the pH sensor
manual.
1. Connect the BNC connector of the pH sensor to the BNC connector of the pH interface.
2. Unscrew and open the pH interface.
3. Feed the cabling through the cable gland.
4. Connect the wiring of the universal input of the Priva Blue ID module and the power supply to
the connector terminals of the interface. Use a 6-core shielded cable with cores of 6 x 0.8 mm
(0.5 mm²).
5. Screw the interface closed.
Connecting the cable
Name Function
24V 24 VAC
0V 0 VAC
PH1 sensor signal pH sensor 1
GND pH sensor 1 GND (not electrically isolated)
PH2 sensor signal pH sensor 2
GND pH sensor 2 GND (not electrically isolated)

Calibrating the pH interface

Calibrate the pH sensor using the Compass software. See the help text in the software.

Technical specifications - pH-interface

Article description
Article number
Housing material
Dimensions H x L x W (without grommet)
Connections
Supply voltage
Ambient temperature
Installing Priva Compass - 00.014
Connection
FP or 24 VAC from external power supply
FG or 0 VAC from external power supply
UI
Add a pull-down resistor (100kΩ) to GND for cable
break detection.
FG
UI
Add a pull-down resistor (100kΩ) to GND for cable
break detection.
FG
pH-interface
3771056
aluminium
85 x 120 x 120 mm
on housing:
• 2 BNC-connectors for 2 pH-sensors (3770946)
on pH-interface board 9969:
• 24 VAC input power supply
• 2 analog outputs
24 VAC
0 ... 35 °C
pH interface
85