KROHNE SMARTPAT PH User manual

Quick Start
For initial set up, we strongly recommend that you also refer to the relevant manual!
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SMARTPAT PH
Digital sensors for pH measurement
Connecting the cable to the sensor
For connection use only a VarioPin cable with shield wire, like the cable VP2-S.
①Ensure that both cable and sensor connector are absolutely dry
②Screw 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)
①SJB 200 W(-Ex) junction box, connection with or without internal resistor
②Sensor with VP2-S cable
③Display or other 4...20 mA loop powered device (e.g. data logger)
④Control system without 250 Ω resistor connected to internal resistor of SJB 200 W(-Ex)
⑤Control system with 250 Ω resistor connected to SJB 200 W(-Ex) without using internal resistor
SJB 200 W-(Ex) with internal resistor
SJB 200 W-(Ex) without internal resistor
S
Shield
S
Shield
A
Sensor +
A
Sensor +
B
Sensor -
B
Sensor -
C
Display +
F
Loop - w/o Display
D
Display -
H
Loop +
E
Loop - w/ Display
G
Loop + (250Ω)
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 ③on the VP connector, as long as the sensor is not connected to the cable.
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.
①
②
③
①
②
③

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Connection to SD 200 W
①Field device
②SD 200 W
③Power supply / Control room
④U+
⑤Sensor+
⑥Sensor-
⑦U-
Connection to SHD 200 / SMARTMAC 400
①SHD 200 / SMARTMAC 400, connection with or without internal resistor
②Sensor with VP2-S cable
③Relays
④Loop 2 (refer to manual for functionality)
⑤HART connections for full sensor access
⑥Control system without 250 Ohm resistor connected to internal resistor of SHD 200 / SMARTMAC 400
⑦Control system with 250 Ohm resistor connected to SHD 200 / SMARTMAC 400 without using internal resistor
SHD 200 / SMARTMAC 400 with internal resistor
SHD 200 / SMARTMAC 400 without internal resistor
J
Loop 2+
J
Loop 2+
K
Loop 2-
K
Loop 2-
FE
Functional earth
FE
Functional earth
S
Shield
S
Shield
A1
Sensor+
A1
Sensor+
B1
Sensor-
B1
Sensor-
A2
HART+
A2
HART+
B2
HART-
B2
HART-
C
Loop 1+ (HART®resistor on board)
C
D
D
Loop 1+ (external HART®resistor required)
E
Loop 1-
E
Loop 1-
F
Relay 1+
F
Relay 1+
G
Relay 1-
G
Relay 1-
H
Relay 2+
H
Relay 2+
I
Relay 2-
I
Relay 2-
Connection with OPTIBRIDGE and optional M8-VP cable
①Primary master (PC / notebook with PACTwareTM FDT/DTM)
②USB-connector
③M8 cable connector (female)
④M8 connector male
⑤VP cable connector
⑥Sensor connector
Connection to SMARTMAC 200 W
①SMARTMAC 200 W, connection with or without internal resistor
②Sensor with VP2-S cable
③Control system without 250 Ohm resistor connected to internal resistor of SMARTMAC 200 W
④Control system with 250 Ohm resistor connected to SMARTMAC 200 W without using internal resistor
SMARTMAC 200 W with internal resistor
SMARTMAC 200 W without internal resistor
S
Shield
S
Shield
A
Sensor +
A
Sensor +
B
Sensor -
B
Sensor -
F
Loop -
F
Loop -
G
Loop + (250Ω)
H
Loop +
4567
JKFE S A1 B1 A2 B2 I
U2+ U2- SU1+ U1-
Sens-UR1+ UR1- UR2+ UR2-
JK
FE S A1 B1 A2 B2 C
U2+ U2- SU1+ U1-
Sens-UR1+ UR1- R2-
U
DFH
EGI
DFH
EG
Sens+Sens+UR2+

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3 Calibration
Calibration with PACTwareTM (download free of charge on KROHNE.com) e.g. with OPTIBRIDGE
1
Manual hold
select Menu mode Quick Setup or Setup / start calibration / activate manual hold /
select yes / press Next
2
Temperature
compensation
set temperature compensation / select automatic or manual (for manual enter
temperature of pH buffer solution; default setting: 25°C (77°F) / press Next
3
Start calibration
procedure
dip sensor into first solution ①/ wait for stable value / press Next / after
≈10 sec. pH-, temperature-and identified buffer valuesappear / press Next / if
necessary, change pH buffer solution value manually / if buffer not recognised
appears press Next and enter pH value of buffer solution manually / press Next / clean
sensor with demineralised water ②
dip sensor into second solution ③/ wait for stable value / press Next / after ≈10 sec.
pH-, temperature-and identified buffer valuesappear / press Next / if necessary,
change pH buffer solution value manually / if buffer not recognised appears press
Next and enter pH value of buffer solution manually / press Next / clean sensor with
demineralised water ②
4
After successful
calibration
the following values appear:
Buffer solution 1, Buffer solution 2, Offset [mV], Slope [mV/pH]
press Next / set calibration date DD-MM-YYYY / set calibration time
HH-MM-SS / press Next / Save values? / select yes / press Next / select no to
deactivate manual hold / press Next to leave calibration menu
5
After unsuccessful
calibration
message Warning! Offset out of range! appears behind the value Offset and/or
the message Warning! Slope out of range! behind the value Slope. In case the
value of the slope is not plausible, additionally the message No saving possible
appears.
Calibration with HART Handheld 475 FIELD COMMUNICATOR
1
Manual hold
select Menu mode Quick Setup or Setup / start calibration / activate manual
hold / select yes / press Enter
2
Temperature
compensation
set temperature compensation / select automatic or manual (for manual enter
temperature of pH buffer solution; default setting: 25°C (77°F) / press Enter
3
Start calibration
procedure
dip sensor into first solution ①/ wait for stable value / press Ok / after ≈10 sec. pH-
, temperature-, Status buffer detection
➔
Finished and identified buffer value
appear / press Ok / if necessary, change pH buffer solution value manually / press
Enter / if identified buffer
➔
0 pH and Buffer not recognised appear press Ok
and enter pH value of buffer solution manually / press Enter / clean sensor with
demineralised water ②
dip sensor into second solution ③/ wait for stable value / press Ok / after ≈10 sec.
pH-, temperature-, Status buffer detection
➔
Finished and identified buffer
value appear / press Ok / if necessary, change pH buffer solution value manually /
press Enter / if identified buffer
➔
0 pH and Buffer not recognised appear press
Ok and enter pH value of buffer solution manually / press Enter / clean sensor with
demineralised water ②
4
After successful
calibration
the following values appear:
Buffer solution 1, Buffer solution 2, Offset [mV], Slope [mV/pH]
Press Ok / set calibration date DD-MM-YYYY with key >/ press Enter / press Ok /
Save values? / select yes / press Enter / select “no” to deactivate “manual hold” /
press Enter to leave calibration menu
5
After unsuccessful
calibration
message Warning! appears behind the values Offset and/or Slope.
If the message Attention! Slope out of range! appears, no data can be saved.
Calibration with SMARTMAC 400
1
Manual hold
select Menu mode PAT sensor / select Calibration / select Two point calibration
/ All outputs on hold? / select Yes or No / press Enter
2
Temperature
compensation
Temperature comp. / select Automatic or Manual (for Manual enter temperature
of pH buffer solution; default setting: 25°C (77°F)) / press Enter
3
Start calibration
procedure
Buffer solution 1 (e.g. 7.00 pH) / dip sensor into buffer solution ①/ wait for stable
value / press Enter / Set buffer solution 1(if necessary, change pH value of used
buffer solution manually) / press Enter / clean sensor with demineralised water ②
Buffer solution 2 (e.g. 4.00 pH) / dip sensor into buffer solution ③/ wait for stable
value / press Enter / Set buffer solution 2 (if necessary, change pH value of used
buffer solution manually) / press Enter / clean sensor with demineralised water ②
4
After successful
calibration
the following is displayed:
Calibration parameter
Slope: .….. [mV/pH]
Offset: …… [mV]
Calibration ok (if Slope in warning Range is displayed, the calibration can be
stored, but it is recommended to check the buffer solutions and to repeat the
procedure)
Press Enter / select yes / press Enter / Set calibration date YYYY-MM-DD /
press Enter / Primary value .… pH and All outputs on hold? / select Yes or No /
press Enter / Calibration successful / press Enter several times
5
After unsuccessful
calibration
the following is displayed:
Calibration parameter
Slope: ..… [mV/pH]
Offset: ..… [mV]
Slope out of range /press Enter / Primary value .… pH and All outputs on
hold? / select Yes or No / press Enter / Calibration aborted / press Enter several
times

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4 Installation
Specific conditions of use to be observed:
Operation with flammable media beyond the ranges of atmospheric conditions ( -20 °C ≤T ≤+ 60 °C and
0.8 bar ≤P ≤1.1 bar) is only permissible if these media do not form explosive medium/air-mixtures. The
operating company is responsible for the safe operation of the pH-sensor regarding temperatures and
pressures of the media used.
When the pH-sensor is operated with flammable media it shall be included in the recurring pressure test of
the system.
For electrostatic discharge, the metal enclosure shall be connected to the local equipotential bonding
system.
The pH-sensor, type SMARPAT PH 8xxx must not be installed and operated in areas where excessive
charge generating processes can occur (e.g. due to friction or oncoming flow with particles).
The safety instructions given in the operating instructions manual shall be observed accordingly.
The installation must always comply with the following requirements:
• No external forces are affecting the sensor.
• The device is accessible for any necessary visual inspections and can be viewed from all sides.
• The nameplate is clearly visible.
Ensure that the pipeline is without pressure before installing or removing a sensor!
Never touch or scratch the pH membrane glass of the sensor.
During installation you should fix a shut-off valve in front of and behind the instrument so that the sensor
can be taken out in case of check.
Warning:
The max. permissible temperature for the SMARTPAT electronics is 85°C.
Immersion installation:
Max. process temperature is 85°C with a submersed sensor (or lower if glass electrode is rated lower),
e.g. with mounting assemblies SENSOFIT RET 5000 or IMM 1000.
Insertion installation:
The device must not be heated by radiated heat (e.g. exposure to the sun) to an electronics housing
surface temperature above the maximum permissible ambient temperature. If it is necessary to prevent
damage from heat sources, a heat protection (e.g. sun shade) has to be installed.
Mounting position of the sensor
The sensor tip must always have full contact with the measuring medium.
The mounting position of the sensor should not deviate more than 75° from vertical position (sensor tip pointing
downwards). Doing otherwise might cause internal air bubbles to float into the sensor tip. This would interrupt the
electrical contact between the inner buffer solution and the glass surface.
Calibration with PACTware
TM
, HART Handheld 475 FIELD COMMUNICATOR or SMARTMAC 400 W
6
Re-calibration
In a fully functional sensor, the optimal slope is -59 mV for each pH unit and the
optimal zero point is 0 mV at pH 7. The slope should at least have a value between
-50...-65 mV per pH unit. Re-calibrate the sensor if the slope does not approximate
those limits. Aged pH sensors show slopes between -55...-50 mV/pH (or flatter)
and significant zero-point deviations.
①Measuring medium
②Maximum deviation of 75° from vertical position
Installation steps
12 mm glass electrodes:
•Use a mounting assembly for insertion or immersion installation suitable to your purposes, e.g. SENSOFIT
INS 1310, RET 5000 or IMM 1000 etc. and follow all installation steps described in the appropriate user
manual of the mounting assembly.
•Ensure that the washer and the O-ring at the electrode are properly fitted, clean and undamaged.
•Take care when inserting the electrode into the mounting assembly.
•It is usually sufficient to tighten the PG 13.5 screw at the electrode by hand. If necessary, a wrench can be
used (carefully !). Potential risk when using a wrench: sensor damage / glass break.
Max. torques:
7 Nm for SMARTPAT PH 8150, 8320, 8530
10 Nm for SMARTPAT PH 8570
Electrodes with plastic housing (3/4 NPT threads):
•Apply sealant to NPT thread acc. to your needs, e.g. PTFE tape or liquid sealant.
•It is usually sufficient to tighten the NPT thread by hand. Potential risks when using a wrench: sensor damage
(e.g. glass break); overtightening of the thread. Max. torque for a metal thread connection: 9 Nm
Please contact your local Krohne contact for calibration and regeneration (KCl) solutions.
Download documents and software
Scan the code on the nameplate or scan the
following code and enter the serial number.
Contact
Select your country from the region / language
selector to view your local KROHNE contact details
on:
www.krohne.com
Direct download:
www.krohne.com/
en/
downloads
Product name:
SMARTPAT
Document type:
Handbook / Software