Endress+Hauser Stamolys CA71SI-Ax0A3A1 Manual

TI00364C/07/EN/14.12
71161856
Technical Information
Stamolys CA71SI
Silicate Analyzer
Compact photometric analysis system for the silicate measurement in
ultrapure water and boiler feedwater
Application
• Ultrapure water
• Boiler feedwater
• Steam and condensate analysis
• Reversed osmosis
• Demineralizers
Industries:
• Pharmaceutical industry
• Power stations
Your benefits
Stamolys CA71SI measures the silicate content quasi-
continuously to assure a constant optimum water quality. This is
of special advantage in the performance monitoring of ion
exchange and reversed osmosis systems. The analyzer replaces
frequent manual sampling and exactly determines the silicate
break through of the system.
• Stainless steel or glass-fibre reinforced carbon housing
available
• Two channel version available
• Measured value storage using integrated data logger
• Automatic calibration and self-cleaning
• Free selectable measuring, cleaning and calibration intervals

Stamolys CA71SI
2Endress+Hauser
Function and system design
Measuring principle upper
measuring range (SI-B)
After sample conditioning, the analyzer sample pump conveys a part of the filtrate to a mixing vessel. The
reagent pump adds reagent at a specific ratio. As a result of the reaction, the sample turns a characteristic
colour. The photometer determines the sample’s absorption of an emitted light at a specific wavelength (s. Fig.,
Pos. 2). The wavelength is parameter specific. The absorbance is proportional to the concentration of the
specified parameter in the sample (Pos. 3). Additionally, the absorption of a reference light is determined to
receive a genuine measuring result. The reference signal is subtracted from the measuring signal to prevent any
effects due to turbidity, contamination and ageing of the LEDs.
The temperature in the photometer is controlled thermostatically so that the reaction is reproducible and takes
place within a short period of time.
Measuring principle lower
measuring range (SI-A)
The LED sends light at a defined wavelength through the sample. The intensity of the received light is
measured by the detector and converted to an electrical signal. In the analyzer, the respective concentration is
calculated from the proportion of light absorbed by the sample.
Silicate With 18% silicon is the second most frequent element of the earth crust. It occurs chemically bonded as silicate
or silicon dioxide in a variety of minerals. From these minerals silicate or silicic acid is washed out in low
quantities to waters.
There are no standard limits for drinking water since silicate is not known to be harmful to health.
But in boiler feed water and boiler water, there may be only low silicate concentrations because under thermal
charge or under high pressure insoluble silicon dioxide is formed. It solidifies in boilers, heat exchangers and
turbine blades and thus reduces the heat exchanger’s efficiency or causes overheating.
The standard limit for boiler feed water is 0.02 ppm silicic acid (SiO2). For injection and boiler water the
standard limits are pressure dependent. For example, at an operational pressure of 68 bar (986 psi), the
concentration of silicic acid in boiler water must not exceed 10 ppb.
a0001612
Photometric principle
1
2
3
4
5
Reference LED
Emitter LED
Sample
Reference detector
Measuring detector
a0001613
Photometric measuring principle
1
2
3
LED
Detector
Sample
12
3

Stamolys CA71SI
Endress+Hauser 3
Photometric detection Heteropoly blue method for silicate determination
Under acidic conditions silicate and phosphate react with molybdate to form yellow silicomolybdic and
phosphomolybdic acid complexes. Addition of citric acid destroys the phosphate complexes. Last step is the
addition of an amino acid. It reduces the yellow silicomolybdic complex to intensively blue silicomolybdic blue.
The absorption is determined at a wave length of 810 nm. The absorption intensity is proportional to the silicate
concentration in the sample.
Interferences
Sample conditioning Analyzer and membrane filtration (Stamoclean CAT411)
A sample flow of 0.8 to 1.8 m3/h (3.5 to 8 gal/min) is continuously conducted through the micro filter via a
pressure pipe. A part of the sample passes the filter membrane and is then conveyed to the measuring device
as filtrate.
Sampling is based on the cross flow filtration principle. The PTFE filter membrane separates particles with sizes
> 0.45 μm from the filtrate. These particles are collected in front of the membrane and are washed away with
the sample flow.
The medium is conducted in a meander-like channel through the filter element. This results in a constantly
high flow rate. The high flow rate generates the self cleaning effect. Therefore, mechanical drives for the
generation of a flow at the filter surface are not necessary.
Analyzer without Endress+Hauser sample conditioning
Before analysis, the sample has to be conditioned, homogeneous and to be transported to an external or to the
delivered collecting vessel.
Measuring system A complete measuring system comprises:
• An analyzer
• A sample conditioning system (optionally):
– Micro filtration / ultra filtration Stamoclean CAT411
– Customer specific solution
• Collecting vessel (see product structure)
Standard application Reversed osmosis or demineralizer monitoring, steam and condensate analysis
Sampling from hydraulic main, measurement after cooling and pressure reduction:
• Analyzer with collecting vessel, Stamolys CA71SI-Ax0A3A1
Expansion up to a six channel system by means of a separate SPS possible (s. special accessories)
Interferring substance Interference
Color eliminated by calibration
Iron interferences from 1 mg/l (ppm)
Phosphate interferences from 50 mg/l (ppm)
Sulfide interferences at high concentrations
Turbidity eliminated by calibration
Micro / ultra filtration
a0001615
Measuring system with Stamoclean CAT411
1
2
3
4
5
6
7
8
9
Stamoclean CAT411
Inlet
Sample pump or hydraulic main
Filtrate line
Collecting vessel
Overflow
Analyzer
Analyzer sample line
Outlet

Stamolys CA71SI
4Endress+Hauser
Input
Measured variable SIO2[μg/l, mg/l, ppb, ppm]
Measuring range SI-A
1 to 200 μg/l
SI-B
50 to 5000 μg/l
Wavelength 810 nm
Reference wavelength 565 nm (SI-B only)
Output
Output signal 0/4 to 20 mA
Signal on alarm Contacts: 2 limit contacts (per channel), 1 system alarm contact
optional: end of measurement (with two channel version display of channel no. available)
Load max. 500 Ω
Load capacity 230 V / 115 V AC max. 2 A, 30 V DC max. 1 A
Data interface RS 232 C
Data logger 1024 data pairs per channel with date, time and measured value
100 data pairs with date, time and measured value for calibration factor determination (diagnostic tool)

Stamolys CA71SI
Endress+Hauser 5
Power supply
Electrical connection
CAUTION
!
Shown diagram (→å1) is an example
The terminal assignment and cable colors can deviate from the actual assignment and colors!
►Only use the terminal assignment of the sticker in the device (→å2) to connect your analyzer!
a0001369
Fig. 1: Example of the connection sticker
a0001372
Fig. 2: Analyzer from top (open version resp. folded out)
1 Connection department sticker
2 Printed circuit board with terminal strip
3 Backside of the analyzer
Supply voltage 115 V AC / 230 V AC ±10%, 50/60 Hz
Power consumption approx. 50 VA
Current consumption approx. 0.2 A at 230 V
approx. 0.5 A at 115 V
Fuses 1 x slow-blow 0.5 A for electronics
2 x semi-delay 0.2 A for photometer
1 x slow-blow 0.1 A for motors
1 x slow-blow 1 A for fan
7
6
5
4
L2
L2
N
L1
L1
PE
PE
ACMOTOR
ACMOTOR
F2
F2
F1
F1
ACMotor
T0.1A
ACMotor
T0.1A
Elektronik
Electronics
T0.5A
Elektronik
Electronics
T0.5A
3
2
1
L
N
PE
PE
NETZ
MAINS
NETZ
MAINS
Klemmenführen auch bei ausgeschaltetem Gerät Spannung !!!
Klemmenführen auch bei ausgeschaltetem Gerät Spannung !!!
Terminalsvoltage to ground even when the unit is switched off !!!
Terminalsvoltage to ground even when the unit is switched off !!!
BU
BU
YE
YE
RD
RD
GN/YE
GN/YE
80
80
75
75
70
70
63
63
57
57
39
39
27
27
21
21
15
15
64
64
58
58
40
40
28
28
22
22
16
16
65
65
79
79
74
74
69
69
62
62
56
56
38
38
26
26
20
20
14
14
78
78
73
73
68
68
61
61
55
55
37
37
25
25
19
19
13
13
77
77
72
72
67
67
60
60
54
54
36
36
24
24
18
18
12
12
76
76
71
71
66
66
59
59
53
53
35
35
23
23
17
17
11
11
RELAIS/ Relay:
max.Last / load: 2A bei / at 115/230VAC, 1A bei / at 30V DC
RELAIS/Relay:
max.Last/load: 2A bei / at 115/230V AC, 1A bei/at 30V DC
OR
OR
BK
BK
RD
RD
YE
YE
V3
V3
V2
V2
V1
V1
0V
0V
keineProbe
Nosample
keineProbe
Nosample
0V
0V
0V
0V
fx
fx
fx
fx
n.b.
n.c.
n.b.
n.c.
-17V
-17V
+17V
+17V
Schirm
Screen
Schirm
Screen
MP5
MP5
MP6
MP6
Schirm
Shield
Schirm
Shield
Reserve
Reserve
Mess2
Meas2
Mess2
Meas2
+24V
+24V
I2+
I2+
I1+
I1+
I2-
I2-
I1-
I1-
Photometer
Photometer
SCHRITTMOTOR
SCHRITTMOTOR
LECKF.
LECKF.
ALARM2
ALARM2
OPTION
OPTION
STÖRUNG
STÖRUNG
ALARM1
ALARM1
F5
F5
F4
F4
M0.2A
M0.2 A
M0.2A
M0.2 A
COM
NC
NO
COM
NC
NO
Kanal1 Kanal2
Channel2
ALARM2
ALARM2
ALARM1
ALARM1
Photometer+17V
Photometer+17V
Photometer-17V
Photometer-17V
n.b.
n.c.
n.b.
n.c.
BN
BN
WH
WH
YE
YE
GY
GY
BK
BK
GN
GN
BK
BK
YE
YE
GN
GN
BU
BU
BN
BN
AnalogOut
0/4-20mA
STEPMOTOR
STEPMOTOR
LEAKS.
LEAKS.
0V
0V
WH
Channel1
ERROR
ERROR
V4
V4
31
31
30
30
29
29
0V
0V
n.b.
n.c.
n.b.
n.c.
Status
Status
Schirm
Shield
Schirm
Shield
Schirm
Shield
Schirm
Shield
Schirm
Shield
Schirm
Shield
Schirm
Shield
Schirm
Shield
1
23

Stamolys CA71SI
6Endress+Hauser
Performance characteristics
Time between two
measurements
tmes = reaction time + rinse time + waiting time + rinse again time + filling time + sampling time +
reagent refusal time (min. waiting time = 0 min)
Maximum measured error 1 to 200 μg/l:
±2 % of measuring range end
there of 5 to 20 μg/l:
±2 μg/l
50 to 5000 μg/l:
±2 % of measuring range end
Measuring interval tmeas to 120 min
Reaction time •SI-A:
90 s
•SI-B:
120 s
Sample requirement 20 ml (0.68 fl.oz.) per measurement
Reagent requirement SI-A
3 x 0.288 ml (0.01 fl.oz.)
0.86 l (0.23 US.gal) per reagent per month with 15 minute measuring interval
SI-B
3 x 0.18 ml (0.006 fl.oz.)
0.52 l (0.14 US.gal) per reagent per month with 15 minute measuring interval
Calibration interval 0 to 720 h
Rinse interval (SI-B only) 0 to 720 h
Rinse again time 30 s
Filling time SI-A
24 s
SI-B
17 s
Sample refusal trefusal = 30 s (SI-A)
trefusal = 0 s (SI-B)
Maintenance interval 6 months (typical)
Servicing requirement 15 minutes per week (typical)
Environment
Ambient temperature 5 to 35 ˚C (40 to 95 ˚F), avoid strong fluctuations
Humidity below the condensation limit, installation in usual, clean rooms
outdoor installation only possible with protective devices (customer supplied)
Ingress protection IP 54

Stamolys CA71SI
Endress+Hauser 7
Process
Sample temperature 5 to 50 ˚C (40 to 120 ˚F)
Sample flow rate min. 5 ml (0.17 fl.oz.) per min
Consistence of the sample low solid content (< 50 ppm)
Sample inlet Unpressurized
pH value of the sample > pH 3 (not buffered)
Mechanical construction
Design, dimensions Analyzer, stainless steel version, SI-A and SI-B
a0001361
Stainless steel version

Stamolys CA71SI
8Endress+Hauser
Analyzer, GFR version, SI-A
a0001355
GFR version
Analyzer, GFR version, SI-B
a0001354-en
GFR version
60 (2.36)
100(3.94)
140 (5.51)
160 (6.30)
250 (9.84)
125(4.92)
165 (6.50)
Ø21(0.83)
Ø26/1.02
Ø21
(0.83)
119(4.69)
78(3.07)47(1.85)
648 (25.5)
360 (14.2)
436 (17.2)
243 (9.57)
200 (7.87)
120
(4.72)
326 (12.8)
330 (13.0)
110
(4.33)
Ø27(1.06)
Ø 16 (0.63)
Ø 27 (1.06)
120(4.72)
555 (21.8)
465 (18.3)
500 (19.7)
7-11/
0.28 - 0.43
(M 6)
Ø 26(1.02)
mm (inch)
38 (1.5)
60 (2.36)
100(3.94)
140 (5.51)
160 (6.30)
250 (9.84)
125 (4.92)
165 (6.50)
Ø 21(0.83)
Ø 26(1.02)
Ø21
(0.83)
119/4.69
78(3.07)47(1.85)
648 (25.5)
360 (14.2)
436 (17.2)
243 (9.57)
200 (7.87)
120
(4.72)
326 (12.8)
Ø 16 (0.63)
Ø 27 (1.06)
120(4.72)
555 (21.8)
465 (18.3)
500 (19.7)
7-11/
0.28 - 0.43
(M 6)
Ø 26 (1.02)
mm(inch)
330 (13.0)
163 (6.42)
Ø 26(1.02)
Ø 16(0.63)
120 (4.72)

Stamolys CA71SI
Endress+Hauser 9
Analyzer, open version, SI-A and SI-B
a0001356
Open version (without housing)
With the open version, you need an additional platform for the reagents. Mount this platform max. 35 cm
(13.8 inch) below the pumps. The reagent bottels have the following dimensions: 90 x 90 x 215 mm (3.54 x
5.54 x 8.46 inch). The number of bottles varies from 2 to 5 depending on the analyzer version.
For these versions, the outlet pipe must be installed right of the analyzer.
The outlet pipe must be mounted to a wall so that the sample outlet hoses from the photometer have a gradient
of 5 to 10 %. If neccessary, extend the hoses.
RS 232
RS 232
381 (15.0)
351 (13.8)
325 (12.8)
8 (0.31)
9 (0.35)
540 (21.3)
562 (22.1)
19 (0.75) 197 (7.76)
192 (7.56)
175 (6.89)
mm (inch)
Ø6 (0.24)

Stamolys CA71SI
10 Endress+Hauser
Collecting vessel
Weight
Material
Sample line connection One channel version
Two channel version
• Depending on the ordered version, one or two collecting vessels (without level measurement) are included
in the scope of delivery.
• Only one collecting vessel can be mounted at the housing. The second is to be placed nearby the analyser.
a0001363
Collecting vessel at analyzer (optional)
1 Ventilation
2 Sample inlet from sampling
3 Collecting vessel
4 Electrical connections
5 Analyzer sample inlet
a0001346
Collecting vessel dimensions
* variable, freely adjustable dimensions
6 Sampling for analyzer
7 Sample overflow
8 Analyzer outlet
*
*
*
130 (5.12)
17 (0.67)
10 (0.39)
145 (5.71)
79 (3.11)
120 (4.72)
140 (5.51)
115 (4.53) Ø 34/25 (1.34/0.98)
3 x Ø 28/20 (1.1/0.79)
4 x Ø 6.6 (0.26)
27 (1.06) 60 (2.36)
4 x Ø 5.5/10.4 (0.22/0.41)
Ø56(2.2)
Ø 50H7 (1.97H0.28)
M20x1.5
Ø 24 (0.94)
70 (2.76)
100 (3.9)
80(3.15)
mm (inch)
48(1.89)
42(1.65)
70(2.76)
60(2.36)
GFR housing
Stainless steel housing
Without housing
approx. 28 kg (62 lbs)
approx. 33 kg (73 lbs)
approx. 25 kg (55 lbs)
Housing:
Front windows:
Endless hose:
Pump hose:
Valves:
Stainless steel 1.4301 (AISI 304) or
Glass-fibre reinforced carbon(GFR)
Polycarbonate
C-FLEX, NORPRENE
TYGON, Viton
TYGON, silicone
Collecting vessel (at analyser, without level measurement)
Connection hose ID 3.2 mm (0.13")
Customer collecting vessel
Connection hose ID 1.6 mm (0.06")
Max. distance from collecting vessel to analyser 1 m (3.28 ft)
Max. height difference from collecting vessel to analyser 0.5 m (1.64 ft)