Ph Sampler Manual 010108
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Transcript of Ph Sampler Manual 010108
Burela Instrumentation Industrial pH Sampler _____________________________________________________________________________________________________________________________________________________________________________________________________________________
Page 1 Goro pH Sampler Manual.doc
Burela Manufactured Industrial pH Sampler
Goro Nickel Project
Burela Instrumentation Industrial pH Sampler _____________________________________________________________________________________________________________________________________________________________________________________________________________________
Page 2 Goro pH Sampler Manual.doc
Contents
Page Introduction 3 Sampler Overview 3 Installation 3 Process connections 4 Sampler I/O 5 Operation & Control 5 Sequence Of Operation 7 Maintenance 11 Drawings 16 Recommended Spare Parts 19
Burela Instrumentation Industrial pH Sampler _____________________________________________________________________________________________________________________________________________________________________________________________________________________
Page 3 Goro pH Sampler Manual.doc
Introduction The Burela Instrumentation industrial pH sampler is an on-line sampler operating on an approximate 2 minute cycle extracting a sample from the process, cooling the sample and presenting the cooled sample to a pH electrode, then washing all wetted parts with water plus a periodic weak acid wash to maintain a clean system. This sampler is suited to applications where high solution temperatures or process composition cause premature electrode failure when direct process insertion is used. The sampler will provide a low maintenance reliable and accurate indication of process pH over a wide range of process conditions and is able to be adapted to suit most applications. pH Sample Overview The ph sampler is housed in two B&R SST enclosures supported by a 50mm SST angle frame. The larger enclosure contains all the wet parts including valves, level sensors, regulators, acid pump, sample chambers and solenoid box. The smaller enclosure houses the PLC and all the electrics. All I/O and power are connected to terminals within the electrical enclosure. Potable water is connected to a pressure regulator located at the LH side of the sample enclosure. Air, acid supply and drains are all located along the bottom of the sample enclosure. All materials used in the sample enclosure have been selected to provide maximum reliability and corrosion resistance. High quality SST, polypropylene, polyethylene & polycarbonate materials have been extensively used. All manufactured parts have been designed with ease of maintenance in mind, using O-ring sealed connections where possible and hand operated connections within the main sample train. The sampler has a range of manual operations designed to assist the maintenance technician with both fault diagnostics and routine maintenance. See Routine Maintenance section. Installation The pH samplers require the following services.
• 220 – 240VAC power at 10 Amps • Potable Water ~ 200kPa • Compressed Air (Instrument Quality) ~ 600kPa • Suitable drain line approx 40mm return to process or sump • Interface to DCS or SCADA system for 4-20mA pH signal & optional
sampler fault indication and control
Burela Instrumentation Industrial pH Sampler _____________________________________________________________________________________________________________________________________________________________________________________________________________________
Page 4 Goro pH Sampler Manual.doc
All electrical & signal connections are terminated within the Electrical Enclosure. Mains power required by the sampler is via a 220 – 240 VAC GPO protected by an earth leakage circuit breaker (RCD installed by customer). This GPO provides electrical isolation for the sampler. Mains power (220 – 240VAC) is terminated - AC active - Terminal 6 AC neutral - Terminal 11 Earth - Terminal 15
4Amp
240
VAC
4Amp
240
VAC
4Amp
240
VAC
4Amp
240
VAC
4Amp
240
VAC
F1 F2 F3 F4 F5
PLC 24VDC
Power
Supply
24VAC
Trans
former
E&H
level
switch
acid
pump
N N N N
11 12 13 14
E E E E
15 16 17 18
PLC − N
24VDC PS − N
24VAC T
X − N
E&h LS − N
ACID PUMP − N
240 VAC SUPPLY IN240VAC − N
IN
EARTH − IN
to R
1
to e&h ls − term 1
to 24vac tx primary
to 24vdc supply in
to plc supply in
6 7 8 9 10
Digital Input & outputs from DCS or PLC control system. Digital In 1 - Terminal 30 - Sampler RUN command Digital Out 1 - Terminal 28 - Sampler Fault Status Digital Out 2 - Terminal 29 - Read pH signal flag. Digital I/O Supply Terminal 53 - +24VDC Supply Digital I/O Common Terminal 31 - 24VCD Common Analog output from pH transmitter (4 – 20mA) Analog Out - Terminal 32 - 4 – 20 mA output + Analog Out Common Terminal 34 - 4 – 20 mA common
28 29 30 31 3432 33
B1 B2 B1 24
dc
com
pH
out
+
pH
out
com
to t
erm 3
to t
erm 4
to t
erm 5
to t
erm 5
1
to p
H t
x
to t
erm 4
8
dcs c
able
dcs c
able
dcs c
able
dcs c
able
dcs a
nalog in
dcs a
nalog in
pH
out
+out out in
to p
lc 1v1
Burela Instrumentation Industrial pH Sampler _____________________________________________________________________________________________________________________________________________________________________________________________________________________
Page 5 Goro pH Sampler Manual.doc
All the sampler services are connected at the base of the wet parts enclosure.
Potable water is connected to the pressure regulator located at the lower left hand side of the enclosure. ½” NB hose secured with a worm drive hose clip or similar Vacuum Eductor drain – 3/8” tubing to 40mm drain line Sampler Drain - 3/8” tubing to 40mm drain line Instrument Air Supply - Connect to pressure regulator located at bottom right of enclosure. ¼” air line connection. Process Sampler connection as discussed below.
Process Connections: The sampler process connection will vary with customer requirements. The sample has a 3/8” polypropylene tube from its sample chamber to the sample base. Customer connection will occur here. The sample probe will usually take the form of a 20 to 25mm SST pipe of nominated length into which a polypropylene tube is inserted with suitable fitting locating the tube at either end. The SST pipe with have either a flanged or threaded adapter fitted to attach to the process vessel. It is strongly recommended that the sample probe be located at the top of the vessel to permit insertion & removal of the probe while vessel is full. The sampler is capable of lifting the sample up to 6 meters based on a SG of 1.0. Location of the probe and the sampler must be arranged so that the required lift does not exceed this distance. A drain is required to return the sample and wash water back to the process or to a returns sump as preferred by the customer. This takes the form of a 40mm PVC pipe with an open tundish arrangement at the sampler end into which the sample cone drain is directed. Do not use a close-coupled configuration for the drain as this impairs reliable draining. Sampler I/O The sampler has one binary input, two binary outputs and one analog 4 – 20mA output used for the pH signal. The binary input is used to halt the sampler PLC program from the DCS or similar by toggling a 24VDC signal. 24VDC – sample running 0VDC – sampler stopped
Burela Instrumentation Industrial pH Sampler _____________________________________________________________________________________________________________________________________________________________________________________________________________________
Page 6 Goro pH Sampler Manual.doc
Binary output 1 will indicate a fault condition as detected by the PLC. This will include conditions such as- Failed to start Failed to get sample Failed to drain sample cone This is a 24VDC signal, which is rest at the start of the next cycle. Binary output 2 is the read pH signal to the DCS sample & hold module. This is a 5 second 24VDC pulse. The analog output is sourced from the E&H pH transmitter, reading the pH value. This is a 4 – 20mA isolated output. Operation & Control The sampler has a range of control and maintenance switches located next to the pH transmitter in the Electrical Enclosure. These switches are mainly used during sample maintenance. There are also 5 indicating terminals located at the top right hand side of the electrical enclosure. There functions are as follows –
• Remote / Local Switch. o Remote - Sample will run continuously when switched to Remote
providing the DCS run command (Binary In 1) is active. o Local - Sample will only respond to local switch commands and
will not post any pH readings back to the DCS. • Local Start Switch
o This will allow the sampler to do 1 cycle provided the sampler is switched to Local and the Maintenance mode is not selected.
• Pause Switch o Switching the Pause switch ON will halt the PLC program until it is
switch OFF. Used mainly for faultfinding or service functions. • Service Mode
o This switch is used to place the sample into service mode. This will only occur when the sampler is in Local and the PLC program is at the beginning of its cycle. The service mode light will illuminate when these conditions are met.
o Service mode activates the valve switches. • Manual Valve Switches
o The 8 valve, solenoid & pump switches allow manual operation of these devices when Maintenance mode is selected.
o This function allows for easy operational checks to be conducted during sample maintenance.
Burela Instrumentation Industrial pH Sampler _____________________________________________________________________________________________________________________________________________________________________________________________________________________
Page 7 Goro pH Sampler Manual.doc
• Indicating Terminals
o These indicators are use to indicate sampler status and level switch operation.
o Sample Level Switch - Terminal 1- Goes active when level switch detects the presence of a sample.
o Cone Level Switch – Terminal 2 – Goes active when switch detects sample or wash water in sample cone.
o Binary 1 In – Terminal 3 – Is active whenever the 24VDC run command from the DCS present.
o Binary 1 Out – Terminal 4 – Is active whenever a fault condition is detected. Will reset when fault is cleared.
o Binary 2 Out – Terminal 5 – Goes active when the Read pH signal is sent to the DCS.
• pH Transmitter – E&H model CM42 o For operation and calibration of the pH transmitter & electrode, refer to
the supplied instruction manual for this transmitter. • E&H Level Switch model FTW325
o For operation and functions of this device refer to the supplied instruction manual.
• Bestobell Mobrey Ultrasonic Level Switch o For operation and functions of this device refer to the supplied instruction
manual. Indicating Terminals
1 2 3 4 5
sample l
s −
to p
lc 1/4
cone l
s −
to p
lc 1/6
bin
ary 1 −
to e
xt o
/p2
bin
ary 2
− t
o e
xt o
/p 3
led led led led led
to t
erm 3
8
to e
&H l
s t
erm 5
to t
erm 2
3
to t
erm 2
4
to t
erm 2
5
bin
ary 1 input p
lc1/
5
Burela Instrumentation Industrial pH Sampler _____________________________________________________________________________________________________________________________________________________________________________________________________________________
Page 8 Goro pH Sampler Manual.doc
Sequence of Operation The sampler will run continuously while ever the run signal from the DCS is present (binary input 1) and the local / remote switch is in remote. This is a generic program and may need fine tuning during commissioning.
1. Drain sample vessel & cone – 5 secs • Transfer valve open • Drain valve open • Vent valve open • Level switches off
Ensure all wash water from previous cycle is drained from the sampler.
2. Prep Sample Line – 10 secs • Transfer valve closed • Drain valve closed • Vent valve closed • Air purge open
Remove any wash water from sample line ready for next sample
3. Electrode acid wash – 2 secs • Transfer valve closed • Drain valve closed • Electrode wash solenoid on • Acid pump on
Ensure all contaminants are removed from electrode. Electrodes soak in weak acid until step 10
4. Such up sample – 1st Vacuum – 15 secs
• Vacuum Eductor air on • Vacuum valve open • Drain valve closed • Transfer valve closed
If catchpot level switch activated then step to step 8 Sampler will make 2 attempts to get sample.
5. 1st Vacuum Pause
• Vacuum off – 5 secs
Burela Instrumentation Industrial pH Sampler _____________________________________________________________________________________________________________________________________________________________________________________________________________________
Page 9 Goro pH Sampler Manual.doc
6. Suck up sample – 2nd attempt
• Vacuum Eductor air on • Vacuum valve open • Drain valve closed • Transfer valve closed
If catchpot level switch activated then step to step 8
7. 2nd Vacuum pause – 5 sec • Vacuum off
If sample level switch did not detect a sample the Sampler Fault is posted to the DCS (Binary Out 1)
8. Purge Sample Line – 10 secs • Transfer valve closed • Vent valve closed • Air purge open
Remove sample from sample line
9. Drain Sample Cone – 5 secs • Transfer valve closed • Vent valve open • Drain valve open
Drain sample cone of weak acid wash
10. Rinse Electrodes – 10 secs • Vent valve open • Drain valve open • Electrode wash solenoid open
Remove all acid wash residue from electrodes
11. Drain Sample Cone – 5 secs • Drain valve open • Transfer valve closed • Electrode wash solenoid closed
Allow all wash water to drain from sample cone
12. Ready for Sample – 5 secs • Vent valve open • Drain valve closed • Transfer valve closed
Burela Instrumentation Industrial pH Sampler _____________________________________________________________________________________________________________________________________________________________________________________________________________________
Page 10 Goro pH Sampler Manual.doc
13. Drop Sample into Sample Cone – 15 secs
• Transfer valve open • Drain valve closed • Vent valve open • Check for sample ( sample cone level switch activated )
Check sample has activated the sample cone level switch and allow pH electrodes to stabalize. If level switch not activated – no sample alarm activated – Binary output 1.
14. Read pH – 5 secs • Transfer valve open • Vent valve open • Drain valve closed • Read pH flag on ( Binary output 2 )
Binary output 2 activated for 5 seconds to allow DCS sample and hold module to update pH valve.
15. Check Online – 1 sec • Transfer valve open • Vent valve open • Drain valve closed
16. Drain Sample Cone – 3 secs
• Drain valve open • Transfer valve open • Vent valve open
Sample is drained from sample cone
17. Rinse Sample Cone – 3 secs • Drain valve open • Transfer valve open • Vent valve open • Electrode wash valve open
18. Drain Sample Cone – 3 secs
• Drain valve open • Transfer valve open • Vent valve open
Burela Instrumentation Industrial pH Sampler _____________________________________________________________________________________________________________________________________________________________________________________________________________________
Page 11 Goro pH Sampler Manual.doc
19. Fail to Drain Check – 0.1 sec • Drain valve open • Transfer valve open • Vent valve open • Check sample cone level switch is off
A fail to drain alarm is activated if the sample cone level switch is still on. Binary output 1.
20. Rinse Vacuum & Electrodes – 10 secs
• Drain valve open • Transfer valve open • Vacuum valve open • Wash Water valve open
21. Rinse Catchpot & Sample Cone – 5 secs
• Drain valve closed • Transfer valve closed • Vacuum valve open for 1 sec • Wash Water valve open • Electrode wash valve open
Sample catchpot, sample cone & vacuum eductor are washed 22. pH Probe Check
• Not used for Goro samplers
23. Purge & Sample Cone Drain – 5 secs • Drain valve open • Transfer valve closed • Vent valve closed • Air purge valve open
Purge out all wash water from sampler 24. Purge Off – 5 secs
• Drain valve closed • Transfer valve closed • Vent valve open
25. Rinse Water to Sample Cone – 5 secs
• Drain valve closed • Transfer valve open • Vent valve open
Burela Instrumentation Industrial pH Sampler _____________________________________________________________________________________________________________________________________________________________________________________________________________________
Page 12 Goro pH Sampler Manual.doc
26. Rinse Sample Cone – 5 secs
• Drain valve open • Transfer valve open • Vent valve open
27. Drain Sample Cone – 5 secs
• Drain valve open • Transfer valve open • Vent valve open
28. Fail to Drain Check – 1 sec
• Check sample cone level switch is off If level switch is on fail to drain alarm is activated – Binary output 1. Sequencer stops until blockage is cleared.
Burela Instrumentation Industrial pH Sampler _____________________________________________________________________________________________________________________________________________________________________________________________________________________
Page 13 Goro pH Sampler Manual.doc
Maintenance: pH Sampler Wet Parts Layout Squitch Level Switch Solenoid Sample Enclosure Chamber Vacuum Generator Electrolyte Reservoir Transfer Valve Sample Cone Air Regulator Wash Water Valve Electrode Acid Wash Valve Pump Pressure Regulator Drain Valve The sample requires periodic maintenance to maintain reliable & accurate operation. The frequency and level of this maintenance may vary depending on the service the sample is attached to. The normal maintenance period is once a week where the following task should be undertaken. A hose is provided inside the wet part enclosure to enable water to be added to the acid container and wash down the wet parts in the event of spills or leaks.
Burela Instrumentation Industrial pH Sampler _____________________________________________________________________________________________________________________________________________________________________________________________________________________
Page 14 Goro pH Sampler Manual.doc
To perform the sample maintenance, place the sample into Local and allow the current cycle to end. Switch to Maintenance mode to allow operation of the valve maintenance switches. Maintenance mode ON light will illuminate when sampler cycle ends.
• Clean & Buffer pH electrodes as per manufactures instructions. A 2 buffer check is recommended, appropriate to the pH range being used.
• Replenish acid container – nominal 10% Sulphuric Acid It is recommended that a drip tray or bund be installed under acid carboy; this could be drained back to tank.
• Check correct operation of acid pump, ensure pump & lines are free of air. Prime if necessary.
• Replenish KCl electrolyte reservoir and check reservoir pressure. Observe correct procedure for disconnecting and reconnecting airline to KCl reservoir. Refer to manufactures instructions for this procedure.
• Clean sample catchpot & sample cone of process residue as necessary. • Clean transfer & drain valves, check for wear, leaks and smooth operation.
Ensure that when valves are reassembled the ball is central in its housing to prevent stress and subsequent breakage of the valve spindle. Note that these valves have been fitted with SST balls and pactene seats to provide long valve life. Apply a small amount of silicone grease to the moving parts. The spring tension adjuster adjusts return action of the valve.
• Clean and apply a smear of silicone grease to the insulated part of the sample cone level probe. This prevents moisture tracking between the level probe & the earth probe.
• Check for process buildup in the vacuum generator. Clean as necessary. • Check the vent valve and line are clean. A blocked vent will prevent the
sample being dropped into the sample cone. • Check for correct operation of all other valves via the maintenance
switches. • Ensure all connections are tightened correctly with no leaks. • With sampler still in Local, switch off the Maintenance mode and press
the Local Start button. The sampler will do 1 cycle but does not post any results to the DCS. During this cycle observe operation of sampler and check all components for correct operation.
• If satisfied with the sampler operation return it to continuous operation by placing it back to Remote.
Burela Instrumentation Industrial pH Sampler _____________________________________________________________________________________________________________________________________________________________________________________________________________________
Page 15 Goro pH Sampler Manual.doc
Electrical Enclosure Layout Indicating Terminals PLC – Allen Bradley 24VAC Micrologic 1100 Power Supply
Supply Fuses 24VDC Power Supply
E&H Field Connections Level Switch Control Panel Layout pH Transmitter Sampler Control Switches Valve Maint Switches
Burela Instrumentation Industrial pH Sampler _____________________________________________________________________________________________________________________________________________________________________________________________________________________
Page 16 Goro pH Sampler Manual.doc
Drawings:
Burela Instrumentation Industrial pH Sampler _____________________________________________________________________________________________________________________________________________________________________________________________________________________
Page 17 Goro pH Sampler Manual.doc
to t
erm 1
REVDWG NO.FSCM NO.SIZE
SHEETSCALE
Burela Instrumentation P/LGoro Nickel
pH Sampler Electrical Panel Layout
4Amp
240
VAC
4Amp
240
VAC
4Amp
240
VAC
4Amp
240
VAC
4Amp
240
VAC
F1 F2 F3 F4 F5
PLC 24VDC
Power
Supply
24VAC
Trans
former
E&H
level
switch
acid
pump
N N N N
11 12 13 14
E E E E
15 16 17 18
24vdc
relay
24vdc
relay
24vdc
relay
acid
pump
wash
water
elect
wash
4Amp
24
VAC
4Amp
24
VDC
F6 F7
24vac
supply24vdc
supply
19 20 21 22 23 24 25
Transformer
24VAC
Secondary
Primary
1 2 3 4 5
e&h
level
switch
ftw
32528 29 30 31 34 35 36 37 38 39 40 41 4232 33 43 44 45 46 47 48 49 50 51 52 53 54 55
24
ac
n
24
ac
n
24
dc
com
24
dc
com
24
dc
com
24
dc
com
24
dc
com
B1 B2 B1 24
dc
com
pH
out
+
pH
out
com
sls vnt pge xfr drn vac vac
gen
24
vdc
+
24
vdc
−
external
output
module
vdc
out0
out1
out2out3
out4
out5
out6
out7
vdc
l n e
com 1/0 1/1 1/2 1/3 com 1/4 1/5 1/6 1/7 1/8 1/9 com 1v1
A.B. Micrologic 1100
out 0 out 1 out 2 out 3 out 4 out 524vdc c
om
maint s
w
local s
w
local
start
pause
24vdc c
om
sample l
evel s
witch
B1−in
sample c
one l
eve l
sw
spare
spare
spare
24vdc c
om
pH a
nalog in
out 0 − electrode wash valve
out 1 − acid pump
out 2 − binary 1
out 3 − binary 2
out 4 − spare
out 5 − spare
out 6 − spare
out 7 − 24vdc maint supply
vdc − 24vdc+
vent v
alve
purge v
alve
transfer v
alve
drain v
alve
wash w
ater v
alve
vacuum v
alve
24vdc+
24vdc+
24vdc+
24vdc+
24vdc+
24vdc+
240vac− F1
240vac− n1
earth
sample l
s − t
o p
lc 1/4
cone l
s − t
o p
lc 1/6
binary 1 − t
o e
xt o
/p2
binary 2
− t
o e
xt o
/p 3
led led led led led
to t
erm 3
8
to e
&H l
s t
erm 5
to t
erm 2
3
to t
erm 2
4
to t
erm 2
5
24vac
240vac
to f
3
to n
3 − t
erm 12
to f
6
to t
erm 19
to 2
4vac t
ransformer
to 2
4vdc p
s −ve
to r
1 − com
to r
2 − c
om
to r
3 − c
om
to t
erm 5
to 2
4vac t
ransformer
to 2
4vdc p
s +
ve
to t
erm 3
to t
erm 4
to t
erm 5
to t
erm 5
1
to p
H t
x
to t
erm 4
8
to p
lc o
/p 0
to p
lc o
/p 0
1
to p
lv o
/p 0
2
to p
lc o
/p 0
3
to p
lc o
/p 0
5
to v
ac m
aint s
w
to m
aint ind l
ight − c
om
to t
erm 3
1
24vdc − c
om input
24vdc t
o p
H t
x
24vdc t
o p
lc o
/p’s
24vdc+ input
dcs c
able
dcs c
able
dcs c
able
dcs c
able
dcs a
nalog in
dcs a
nalog in
to s
amp l
s
to v
ent s
olenoid
to p
urge s
olenoid
to t
ransfer s
olenoid
to d
rain s
olenoid
to v
acuum s
olenoid
to v
ac g
enerator s
olenoid
vent s
olenoid − c
om
purge s
olenoid − c
om
transfer s
olenoid − c
om
drain s
olenoid − c
om
vavuum s
olenoid − c
om
vac g
enerator s
olenoid − c
om
24vdc+ t
o s
witch p
anel
24vdc+ t
o f
tw325 t
erm 6
24vdc+ t
o s
amp l
s
to s
amp l
s − c
om
4 5 6 17
1 2 15 16
7 8 9 10
cone level probe
cone level probe earth
24ovac−n term14
24vac − f4
24vdc+ term 55
switched o/p to term 2
240vac − f2240vac−n term12
earth term16
to term 21to f7
+ + − −
l n e
24VDC
power supply
WEIDMULLER
TRIDONIC ATCO
OMT75
PLC − N
24VDC P
S − N
24VAC T
X − N
E&h L
S − N
ACID
PUMP − N
TO F5TO ACID PUMP
TO F6
TO WASH WATER SOL
TO F6
TO ELECT
WASH SOL
WW S
OL − N
EW S
OL − N
TO T
ERM 4
5
r1 r2 r3
TO R
1 & R
2
TO T
ERM 5
2
240 VAC SUPPLY IN
240VAC − N
IN
EARTH − IN
nts 1 OF 1
TO P
LC E
XT 1
& A
P M
AIN
T S
W
DC C
OM
DC C
OM
DC C
OM
TO P
LC O
/P 4
& W
W M
AIN
T S
W
TO P
LC E
XT 0
& E
W M
AIN
T S
W
to R
1
to e
&h l
s − t
erm 1
to 2
4vac t
x p
rim
ary
to 2
4vdc s
upply in
to p
lc s
upply in
pH
out
+out out in
vnt
sw
pge
swxfr
swdrn
sw
vac
sw
to p
lc 1v1
to d
rain m
aint s
w
to t
ransfer m
aint s
w
to p
urge m
aint s
w
to v
ent m
aint s
w
6 7 8 9 10 26 27
56
24VDC+ t
o d
cs r
un input
to t
erm 3
4
binary 1 input p
lc1/5
Burela Instrumentation Industrial pH Sampler _____________________________________________________________________________________________________________________________________________________________________________________________________________________
Page 18 Goro pH Sampler Manual.doc
30
17
4
4
4
PLC
24vdc p/s
24vac tx
E&H LS
f1
f2
f3
f4
f5
4A
240VAC 50HZ SupplyN EA
4
4
primary
secondary
4A
4A
4A
4Amotor
acid pump
r1
com
1/0
1/1
1/2
1/3
com
1/4
1/5
1/6
1/7
1/8
com
1v1
4
4
dc com24vdc
24vdc power supply
f7 4A
35 1sls
56
54
maint
remote
local
local start
pause
cls
plc inputs
5
22
plc to maint mode in local
local input command
start plc in local
pause plc in local
sample level switch
cone level switch
Binary 1 IN
spare
spare
0/0
0/1
0/2
0/3
0/4
0/5
1/0
1/1
1/2
1/3
1/4
1/5
1/6
1/7
plc outputs
plc ext outputs
44 51
23R2
39 48
40 49
42 50
46 52
vent
purge
transfer
drain
wash water
vacuum
vac gen
24R3electrode wash relay
22R1acid pump relay
28
29
spare
spare
binary 1 to dcs
binary 2 to dcs
36 47
maint sw
maint sw
maint sw
maint sw
maint sw
maint sw
24vdc maint supply
maint on
indicator
maint sw
maint sw
24vdc+ 24vdc−
point B
point A
point A
point B
5024vdc com
2
bestobel
squitch
sample level
switch
5
24vactransformer
240vac
24vacf6 4A
16
R2
R3
wash water solenoid
electrode wash solenoid
Itemref
Designed by
Edition Sheet
ScaleDateFilenameTitle/Name, designation, material, dimension etcQuantity Article No./Reference
pH sampler wiring diagram
pH sampler wiring diagram.skf 03/12/07 nts
1 of 1Goro pH samplers
General wiring diagram for pH samplers using
the micrologic 1100 plc
Valve maintenance switches located under pH transmitter
Supply to maintenance switches is via output 07 of the relay
extender module & is only activated when sampler is in local,
maint switch selected and sampler at end of it’s cycle
Maintenance light will indicate when power is on.
spare
45
43
41
38
37
Burela Instrumentation Industrial pH Sampler _____________________________________________________________________________________________________________________________________________________________________________________________________________________
Page 19 Goro pH Sampler Manual.doc
Typical Interconnection Arrangement with DCS or Similar System
Sampler DCS Systemplc ext module 2
plc ext module 3
plc input 1/5
pH transmitter
iO terminals
digital input module
diguital input module
digital output module
analog input module
4/20 mAsample & hold
module
+24VDC
24vdc com
+24VDC
24vdc com
+24vdc
24vdc com
+24vdc
24vdc com
Binary output 1
binary output 2
binary input 1
analog out 4 − 20mA
28
24
29
24
56
30
33
34
pH Sampler & DCS interface connections
GORO Nickel Project
binary 1 input
sampler fault
binary 2 input
read pH signal
sampler RUN
output signal
update pH value
when read pH is ON
Burela Instrumentation Industrial pH Sampler _____________________________________________________________________________________________________________________________________________________________________________________________________________________
Page 20 Goro pH Sampler Manual.doc
Recommended Spare Parts PART No Recommended
QTY DESCRIPTION
91 2 SMC valve 1/4” teflon N/O, LVA-21-02-C 93 2 SMC valve 1/4” teflon N/C, LVA-20-02-C 80 2 Valve wash water 2 Acid metering pump poppet valves KB0101 (Viton) 81 2 VALVE- Ball, True Blue 15 mm P/N ABVS-050-X-V-T-PV, normally closed, c/w
actuator & spring return kit, viton 'O' rings, threaded 1/2" B.S.P. socket connection, PVC
81B 4 Stainless steel ball to suit True Blue valve 81C 20 Pactene valve seats to suit True Blue valve (2/valve) 201 1 Pump, Iwaki metering – P/N KB3X, 240VAC 50HZ 202 2
EDUCTOR, (Ejector), Vacuum, SMC P/N ZHI3DS010202
217 1 pH Transmitter – E&H Liquidline CM42 270 1 Relay 24VDC Single pole – AB H700HK36Z244 313 1 Level probe Squitch 1" BSPT thread, probe length 27 mm, 316 st.st. body. 361 1 Regulator – Water Pressure, RMC PS50-500, R1/2, 500kpa