KROHNE SMARTPAT PH Quick Start

Quick Start
SMARTPAT PH
Digital sensors for pH measurement
Installation, assembly, start-up and maintenance may only be performed by appropriately trained personnel.
Check the nameplate for correct operating conditions.
For use in hazardous areas, special codes and regulations are applicable. Instruments must not be
connected to power supply before reading instructions described in the supplementary manual.
The responsibility as to the suitability, intended use and corrosion resistance of the used materials of this
device against the measured fluid rests solely with the operator.
SMARTPAT PH sensors are factory calibrated. Nevertheless it is recommended to calibrate the sensor
before installing it into its final measuring location.
1. Connect the sensor to a device suitable for SMARTPAT PH sensor calibration: OPTIBRIDGE / PC,
SMARTMAC, HART handheld, or your PLC.
2. Calibrate the sensor.
3. Install the sensor into its final measuring location.
1 Unpacking the sensor
• Remove the protective cap from the sensor tip by gently twisting and pulling it ①.
• Lay the sensor on a soft ESD mat or soft paper tissue ②.
• Leave the protection cap ③ on the VP connector, as long as the sensor is not connected to the cable.
③
②
①
2 Electrical connection
Danger:
All work on the electrical connections may only be carried out with the power disconnected.
Take note of the voltage data on the nameplate.
Observe the national regulations for electrical installations.
11/2022 – 4009097302 - QS SMARTPAT PH R02 en
③
②
①
For initial set up, we strongly recommend that you also refer to the relevant manual!
Connecting the cable to the sensor
For connection use only a VarioPin cable with shield wire, like the cable VP2-S.
① Ensure that both cable and sensor connector are absolutely dry
② Screw the cable connector on the sensor connector and tighten it by hand
Cable VP2-S
Transparent-black (inner coax shield) Ub+
White Ub-
Shield S
Connection to junction box SJB 200 W(-Ex)
① SJB 200 W(-Ex) junction box, connection with or without internal resistor
② Sensor with VP2-S cable
③ Display or other 4...20 mA loop powered device (e.g. data logger)
④ Control system without 250 Ω resistor connected to internal resistor of SJB 200 W(-Ex)
⑤ Control system with 250 Ω resistor connected to SJB 200 W(-Ex) without using internal resistor
SJB 200 W-(Ex) with internal resistor
S Shield
A Sensor +
B Sensor -
C Display +
D Display -
E Loop - w/ Display
G
Loop + (250Ω)
SJB 200 W-(Ex) without internal resistor
S Shield
A Sensor +
B Sensor -
F Loop - w/o Display
H Loop +
1