K-Patents PR-43-AC User manual

Sanitary Process Refractometer PR-43-AC/AP
IM-EN-PR43ACAP: Rev. 1.08
Effective: September 20, 2016
Instruction Manual

Document/Revision No. IM-EN-PR43ACAP/1.08 Effecve: September 20, 2016
General safety consideraons
The process medium may be hot or otherwise hazardous. Use shields and
protecve clothing adequate for the process medium - do not rely on avoid-
ance of contact with the process medium.
Precauons when removing a refractometer from the process line :
•Check first that the process line is depressurized and drained.
•Ensure you are clear of any possible spillage and you have a clear emer-
gency escape path.
Disposal
When wishing to dispose of an obsolete refractometer or any parts of a
refractometer, please observe local and naonal regulaons and require-
ments for the disposal of electrical and electronic equipment.

© Copyright K-Patents 2016. All rights reserved.
Symbols and terms used in this manual:
This indicates a warning. It provides safety precauon informaon needed to
avoid injury while operang the refractometer system.
This indicates that something is important for the operaon of the refractome-
ter system.
Note. Notes contain addional informaon and hints.
Warranty
All K-Patents products are guaranteed to be free of material or workmanship defects.
K-Patents provides a limited warranty that covers the repair or replacement, without
charge, of any defected product or part that occurs within two (2) years from the date
of delivery. The repair can only be done by nearest authorized K-Patents repair facility.
K-Patents is not responsible for material selecon of process weed parts.
Warranty does not cover normal wear and tear of the product over me, or any prod-
ucts that are handled, installed or used against manufacturer’s guidance.
Full warranty informaon is available in the Support secon of hp://www.kpatents.com.
Please note that prior to shipping any products or items to K-Patents, a Request for
Return Materials Authorizaon (RMA) must be filled in and submied to K-Patents
Order Handling department. The RMA form is available at hp://www.kpatents.com/
in the Support secon.

Document/Revision No. IM-EN-PR43ACAP/1.08 Effecve: September 20, 2016

Table of contents
1 Refractometer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
2 Mounng . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
2.1 Choosing the mounng locaon . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
2.2 Check list for pipe mounng . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
2.3 Check list for mounng in a tank, a vessel or a large pipe . . . . . . . . . 3
2.4 Electrical connecons . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2.4.1 Wiring opons . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
3 Specificaons . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
3.1 Compability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
3.2 Refractometer rangeability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
3.3 Sanitary process refractometer PR-43-AC . . . . . . . . . . . . . . . . . . . . . . 9
3.3.1 PR-43-AC model code . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
3.3.2 PR-43-AC mounng hardware model code . . . . . . . . . . . . . . . . . . 12
3.3.3 PR-43-AC specificaons . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
3.3.4 PR-43-AC parts list . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
3.3.5 PR-43-AC mounng specifics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
3.3.6 Mounng specifics for EHEDG cerfied PR-43-AC configuraon . . 27
3.3.7 3-A Sanitary Standard compliance . . . . . . . . . . . . . . . . . . . . . . . . . 27
3.4 Sanitary process refractometer PR-43-AP . . . . . . . . . . . . . . . . . . . . . 29
3.4.1 PR-43-AP model code . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
3.4.2 PR-43-AP mounng hardware model code . . . . . . . . . . . . . . . . . . 34
3.4.3 PR-43-AP specificaons . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
3.4.4 PR-43-AP parts lists . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
3.4.5 PR-43-AP mounng specifics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
3.4.6 Mounng specifics for EHEDG cerfied PR-43-AP configuraon . . 41
3.4.7 3-A Sanitary Standard compliance . . . . . . . . . . . . . . . . . . . . . . . . . 41
4 Prism wash . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
4.1 Prism coang . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
4.2 Prism wash . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
4.2.1 Recommended wash pressures and mes . . . . . . . . . . . . . . . . . . . 44
4.2.2 Prism wash systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
4.2.3 Prism wash nozzles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

PR-43-AC/AP instrucon manual
Document/Revision No. IM-EN-PR43ACAP/1.08 Effecve: September 20, 2016
5 Refractometer verificaon . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
PR-43 refractometer verificaon form . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

1 Refractometer 1
© Copyright K-Patents 2016. All rights reserved.
1 Refractometer
The sanitary refractometers PR-43-AC and PR-43-AP provide a digital interface detec-
on system for alimentary industry.
The PR-43-AC/AP (figure 1.1) measures the refracve index nDand the temperature of
the process medium. The concentraon of the process liquid is calculated from these
values when the composion of the process medium is known.
The output values of the refractometer are transmied through mA output and digitally
through an Ethernet connecon by using a UDP/IP protocol (see the general manual for
specificaons). mA output is available with mA output cable (mA only) or with a split
cable (mA and Ethernet).
PR-43-AC PR-43-AP
Figure 1.1 Refractometer models

2PR-43-AC/AP instrucon manual
Document/Revision No. IM-EN-PR43ACAP/1.08 Effecve: September 20, 2016
2 Mounng
The refractometer mounng locaon should be chosen with care to ensure reliable
readings from the process.
2.1 Choosing the mounng locaon
The mounng locaon needs to be such that sediments or gas bubbles cannot accumu-
late by the refractometer. Good flow velocity is essenal in keeping the prism clean.
Important: If the process pipe vibrates, support the pipe. A vibrang pipe might dam-
age the in-line refractometer mounted on it.
A K-Patents inline refractometer can be located either indoors or outdoors in most cli-
mates. However, when a refractometer is located outdoors, some basic protecon
against direct exposure to sunlight and rain should be provided. Special care should
be taken if the pipe wall is translucent (e.g. of fiberglass), as light from outside reach-
ing the prism through the pipe wall may disturb the measurement.
The refractometer cover should not be exposed to high temperature radiaon. In most
cases, dra and natural convecon provide sufficient air cooling if the air gets to flow
freely around the refractometer head.
Addional cooling is necessary when the ambient temperature is higher than 45 °C
(113 °F) or when the process temperature is above 110 °C (230 °F) and the ambient
temperature is above 35 °C (95 °F). The air cooling is improved by blowing pressurized
air against the refractometer cover. The pressurized air can be supplied by the ven-
laon system. If no air is available it is also possible to wind a copper coil for cooling
water around the refractometer head cover.
Important: Always mount the refractometer so that the interconnecng cable points
downwards from the refractometer head.
2.2 Check list for pipe mounng
The PR-43-AC and PR-43-AP are mounted in a pipe. K-Patents recommends a flow
velocity between 1 and 3 m/s (3–10 /s). If the flow velocity exceeds 6 m/s (20 /s),

2 Mounng 3
© Copyright K-Patents 2016. All rights reserved.
there is a risk of cavitaon. Cavitaon may damage the refractometer and the piping.
Too slow a flow velocity may cause erraneous measurement readings due to coang of
straficaon (layering) of the sample on the prism.
The diameter and form of the pipe and the process temperature all affect the measure-
ment and need to be taken into account.
−If the process pipe diameter varies, select the posion with the smallest diameter
(and accordingly highest velocity). Then the prism stays clean beer.
−If the refractometer is used in a feed-back control loop, make the me lag short. E.g.
when a diluon valve is controlled, mount the refractometer close to the diluon
point. However, make sure complete mixing has occurred at mounng locaon.
−If the temperature varies along the process pipe, select the posion with the highest
process temperature. That minimizes the risk of coang, because higher tempera-
ture means higher solubility and also lower viscosity.
−Oen the posion with the highest process pressure (= aer pump + before valve)
has favorable flow condions without sedimentaon or air trapping risks.
−The refractometer should be conveniently accessible for service.
2.3 Check list for mounng in a tank, a vessel or a large pipe
A probe refractometer PR-43-AP can be inserted with a flange or clamp into tanks and
vessels which either don’t have a scraper or where the mixer doesn’t touch the vessel
wall. A probe refractometer can also be flush mounted in a cooker where the scraper
touches the wall.
−The inserted probe refractometer is mounted close to a srrer to ensure represen-
tave sample of the process liquid and to keep the prism clean.
−The refractometer should be conveniently accessible for service.

4PR-43-AC/AP instrucon manual
Document/Revision No. IM-EN-PR43ACAP/1.08 Effecve: September 20, 2016
Prevent outside light
Easy access
Easy access
High pressure High temperature
High pressure
Small diameter High temperature High velocity >1.5m/s (>5ft/s)
Upper pipe bend
Ambient air cooling

2 Mounng 5
© Copyright K-Patents 2016. All rights reserved.
2.4 Electrical connecons
The refractometer has an M12 connector in the refractometer for power supply, mA
output and Ethernet connecons.
Figure 2.1 The M12 connector
PR-43 refractometers are powered with 24 VDC. For connecng the refractometer to
Mulchannel user interface MI, see the manual for Mulchannel user interface. For
connecng the refractometer to Compact user interface CI, see the manual for Compact
user interface. See Figure 2.2 for instrucon how to connect the M12 refractometer
cable.
2.4.1 Wiring opons
The PR-43 refractometer provides both analogue (mA) and digital output signals. See
Figure 2.3 for the wiring when only analogue output is used.
Opons for connecng the refractometer with both analogue and digital outputs are
shown in Figure 2.4. Both Compact user interface CI and Mulchannel user interface
MI use the digital output signal.

6PR-43-AC/AP instrucon manual
Document/Revision No. IM-EN-PR43ACAP/1.08 Effecve: September 20, 2016
Align these three
reference points
Approximately
a quarter turn to
tighten
Figure 2.2 Connecng the refractometer cable to the refractometer
10m (33ft)
90m (295ft)
180m (590ft)
200m (656ft)
P4-001
PR-43 REFRACTOMETER
M-12-8 pin, A-code, M
non-Ex
PR-43 REFRACTOMETER
M-12-8 pin, A-code, M
non-Ex
PR-43 REFRACTOMETER
M-12-8 pin, A-code, M
non-Ex
PR-43 REFRACTOMETER
M-12-8 pin, A-code, M
non-Ex
max. 90m (295ft) max. 90m (295ft)
max. 90m (295ft)
10m (33ft)
PR-8430
Platform 4 cable
M12-8 pin, A-code, F+M
Ethernet, mA, 24V
PR-8430
Platform 4 cable
M12-8 pin, A-code, F+M
Ethernet, mA, 24V
PR-8430
Platform 4 cable
M12-8 pin, A-code, F+M
Ethernet, mA, 24V
PR-8660
Platform 4 cable extender
M12-8 pin, A-code, F+M
PR-8431
Split cable M12
M12-8 pin, A-code, F
Ethernet (M12-4 pin, D-code,M)
mA, 24V
PR-8431
Split cable M12
M12-8 pin, A-code, F
Ethernet (M12-4 pin, D-code,M)
mA, 24V
1m (3ft)
PR-8431
Split cable M12
M12-8 pin, A-code, F
Ethernet (M12-4 pin, D-code,M)
mA, 24V
1m (3ft)
max. 200m (656ft)
PR-8680
M12-8 pin, A-code, F
Field plug PR-8432
Power supply and
mA output cable
Refractometer only Cables
M
M M
M MM
F
F
F
F
F
F F
Figure 2.3 Wiring with analogue output only

2 Mounng 7
© Copyright K-Patents 2016. All rights reserved.
10m (33ft) 90m (295ft) 180m (590ft) 200m (656ft)
P4-001
PR-43 REFRACTOMETER
M-12-8 pin, A-code, M non-Ex PR-43 REFRACTOMETER M-12-8 pin, A-code, M non-Ex PR-43 REFRACTOMETER M-12-8 pin, A-code, M non-Ex
PR-43 REFRACTOMETER M-12-8 pin, A-code, M non-Ex
max. 90m (295ft) max. 90m (295ft)
max. 90m (295ft)
10m (33ft)
PR-8430
Platform 4 cable M12-8 pin, A-code, F+M Ethernet, mA, 24V
PR-8430 Platform 4 cable M12-8 pin, A-code, F+M Ethernet, mA, 24V
PR-8430 Platform 4 cable M12-8 pin, A-code, F+M Ethernet, mA, 24V
PR-8660 Platform 4 cable extender M12-8 pin, A-code, F+M
PR-8431 Split cable M12 M12-8 pin, A-code, F Ethernet (M12-4 pin, D-code,M) mA, 24V
PR-8431 Split cable M12 M12-8 pin, A-code, F Ethernet (M12-4 pin, D-code,M) mA, 24V 1m (3ft)
PR-8431 Split cable M12 M12-8 pin, A-code, F Ethernet (M12-4 pin, D-code,M) mA, 24V 1m (3ft)
max. 200m (656ft)
PR-8680
M12-8 pin, A-code, F Field plug PR-8432
Power supply and mA output cable
Refractometer only Cables
M
M M
M MM
F F F
F
F
F F
Figure 2.4 Wiring opons when both analogue and digital outputs are used

8PR-43-AC/AP instrucon manual
Document/Revision No. IM-EN-PR43ACAP/1.08 Effecve: September 20, 2016
When a refractometer is connected to a computer or another device with RJ45 port,
an ethernet converter cable is needed as well as the split cable.
Figure 2.5 Connecng the refractometer with network converter

3 Specificaons 9
© Copyright K-Patents 2016. All rights reserved.
3 Specificaons
3.1 Compability
Electrically: The PR-43 refractometers are not interchangeable with any other refrac-
tometer model. All PR-43-AC/AP refractometers are however interchangeable with
each other as long as they have the same prism. The PR-43-AC/AP refractometers are
not compable with the K-Patents indicang transmiers DTR, STR or IT-R.
Mechanically: The sanitary process refractometer PR-43-AC/AP fits the same sanitary
process connecons as PR-23-AC/AP.
3.2 Refractometer rangeability
The refracve index standard range of a PR-43-AC/AP is 1.320-1.530 (corresponds to
0-100 Brix), Figure 3.1, with a Sapphire prism. A PR-43-AC can also be equipped with a
Sapphire prism with a refracve index range 1.260-1.470.
PR-43-AC-73
PR-43-AC-74
1.30
1.25 1.35 1.40 1.45 1.50 1.55
nD
Figure 3.1 PR-43-AC rangeability
3.3 Sanitary process refractometer PR-43-AC
The refractometer PR-43-AC is a 3-A and EHEDG cerfied sanitary process refractome-
ter for measuring concentraons in a pipeline. It is easy to install in any pipe size di-
rectly or using a flow cell. The Sanitary process refractometer is suitable for all food
and beverage processing applicaons where real-me monitoring and control can help
to improve product quality and reduce costs.

10 PR-43-AC/AP instrucon manual
Document/Revision No. IM-EN-PR43ACAP/1.08 Effecve: September 20, 2016
Figure 3.2 PR-43-AC dimensions

3 Specificaons 11
© Copyright K-Patents 2016. All rights reserved.
3.3.1 PR-43-AC model code
SANITARY COMPACT REFRACTOMETER for pipelines
Model and descripon Model
PR-43 = Refractometer PR-43
Refractometer model
-AC = Compact sanitary cerfied process refractometer, inseron length 14 mm -AC
Prism material and Refracve Index range limit
-73 = R.I. 1.320-1.530 nD(0-100 Brix) Sapphire prism -73
-74 = R.I. 1.260-1.470 nDSapphire prism -74
Connecon type and size
-E25-P15 = Varivent DN65, 15 bar (A) -E25-P15
-H25-P15 = Sanitary 3A-clamp, 2½inch, 15 bar (A) -H25-P15
-H25-P40 = Sanitary 3A-clamp, 2½inch, High Pressure, 40 bar @ 20°C (A) -H25-P40
-Z25-P15 = 2½inch I-clamp, 15 bar (B) -Z25-P15
Refractometer weed parts material
-SS = AISI 316 L -SS
-HC = Hastelloy C / ASTM C267 -HC
Electrical classificaon
-UN = Unclassified area, general purpose, ordinary locaon -UN
-AX = EX and IECEx cerfied Ex II 3G, Ex nA IIC T4 Gc
(up to zone 2) (Tamb -40...+65°C)
-AX
-IA = ATEX and IECEx cerfied Ex II 1G, Ex ia IIC T4 Ga
(up to zone 0) (Tamb -40 ... +65°C)
-IA
High accuracy opon
-HAC = High accuracy version in range 0-30 Brix 4-30°C -HAC
EHEDG opon
-EH = EHEDG Type EL class I Cerfied Model -EH
Polishing opon
-EP = Electropolished refractometer weed parts (Ra 0.4 µm, 15 µ inch) -EP
(A) EHEDG cerfied version available
(B) Sanitary 3-A cerfied

12 PR-43-AC/AP instrucon manual
Document/Revision No. IM-EN-PR43ACAP/1.08 Effecve: September 20, 2016
3.3.2 PR-43-AC mounng hardware model code
Mounng hardware (without wash nozzles)
MODEL AND DESCRIPTION MODEL
AFC = Elbow flow cell AFC
Refractometer connecon
-H = Sanitary 3A clamp, 2 1/2 inch -H
Construcon material
SS = AISI 316 SS
Process connecon
-H = Sanitary 3A clamp -H
Pipe secon diameter
10 = 25 mm (1 inch) (A) 10
15 = 40 mm (1 1/2 inch) 15
20 = 50 mm (2 inch) 20
25 = 65 mm (2 1/2 inch) (A) 25
30 = 80 mm (3 inch) (A) 30
40 = 100 mm (4 inch) (A) 20
Flow cell inlet type
-SI = Straight pipe -SI
-RI = Reduced pipe (cone) -RI
Opons
-EP = Electropolished process weed parts (RA 0.4µm, 15 µ inch) -EP
(A) with -SI opon only
EHEDG cerfied mounng hardware
MODEL AND DESCRIPTION MODEL
AFC = Elbow flow cell AFC
Refractometer connecon
-H = Sanitary 3A clamp, 2 1/2 inch -H
Construcon material
SS = AISI 316 SS
Process connecon
-H = Sanitary 3A clamp -H
Pipe secon diameter
20 = 50 mm (2 inch) 20
Flow cell inlet type
-SI = Straight pipe -SI
EHEDG
-EH = EHEDG Type EL Class I Cerfied model -EH
Polishing opon
-EP = Electropolished process weed parts (Ra 0.4µm, 15 µ inch) -EP
For EHEDG cerfied refractometers use ISO2852 type EHEDG cerfied gasket PR-9202-
EH (2½inch) or PR-9272-EH (4 inch).

3 Specificaons 13
© Copyright K-Patents 2016. All rights reserved.
Mounng hardware with wash nozzles
MODEL AND DESCRIPTION MODEL
AFC = Elbow flow cell AFC
Refractometer connecon
-H = Sanitary 3A clamp, 2 1/2 inch -H
Construcon material
SS = AISI 316 SS
Process connecon
-H = Sanitary 3A clamp -H
Pipe secon diameter
10 = 25 mm (1 inch) 10
15 = 40 mm (1 1/2 inch) 15
20 = 50 mm (2 inch) 20
25 = 65 mm (2 1/2 inch) (A) 25
30 = 80 mm (3 inch) (A) 30
40 = 100 mm (4 inch) (A) 40
Flow cell inlet type
-SI = Straight pipe -SI
-RI = Reduced pipe (cone) -RI
Wash nozzle connecon
-NC = Nozzle connecon -NC
Wash nozzles for 10/15 flow cells
-SN = Steam nozzle, threads G ¼ inch female -SN
-WN = Water nozzle, threads G ¼ inch female -WN
-WP = Pressurized water nozzle, threads G ¼ inch female -WP
-PG = Plug for nozzle connecon -PG
(A) with -SI opon only
Example: Refractometer:PR-43-AC-73-H25-P15
Flow cell: AFC-HSS-H20-SI
Note: Prism wash control and diagnoscs require the use of a Mulchannel user in-
terface MI (or customer’s own control system).

14 PR-43-AC/AP instrucon manual
Document/Revision No. IM-EN-PR43ACAP/1.08 Effecve: September 20, 2016
Mounng hardware, mini flow cell
MODEL AND DESCRIPTION MODEL
MFC = Mini flow cell MFC
Refractometer connecon
-H = Sanitary 3A clamp, 2 1/2 inch -H
Construcon material
SS = AISI 316 SS
Process connecon
-H = Sanitary 3A clamp -H
Pipe secon diameter
05 = 15 mm (½ inch) 05
Mounng hardware, Varivent DN65 connecon
MODEL AND DESCRIPTION MODEL
TDN = Varivent®in-line access unit clamp DN65 Type N (A) TDN
Pipe secon diameter
40 = 100 mm (4 inch) -40
50 = 50 mm (2 inch) -50
65 = 65 mm (2 1/2 inch) -65
80 = 80 mm (3 inch) -80
100 = 100 mm (4 inch) -100
125 = 125 mm (5 inch) -125
150 = 150 mm (6 inch) -150
Counter flange opons
-SN = Steam nozzle, threads G ¼ inch female -SN
-WN = Water nozzle, threads G ¼ inch female -WN
-WP = Pressurized water nozzle, threads G ¼ inch female -WP
-PG = Varivent blind flange type N -PG
(A) Includes one 2½inch Type N blind flange with 2½inch EPDM gasket
and 2½ inch Varivent clamp Type N