Hach-Lange SI629 C User Manual [en, de, es, fr, it]

DOC023.98.90243
Transmitters si629 C
Manual
Bedienungsanleitung
Manual
Manuel d’utilisateur
Manuale di istruzioni
05/2010, Edition 1
05/2010, Edición 1
05/2010, Edition 1
05/2010, Edizione 1
© HACH LANGE GmbH, 2010, All rights reserved. Printed in Spain
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ENGLISHDEUTSCHESPAÑOLFRANÇAISITALIANOCONTACT
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Table of contents
1. Technical Specifications . . . . . . . . . . . . . . . . . . . 3
1.1. Dimensions
. . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2. General information . . . . . . . . . . . . . . . . . . . . . . 5
2.1. Safety information
2.1.1. Use of hazard information
2.2. General product information
2.3. Items supplied
3. Installation
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
3.1. si629 C (wall mount)
3.1.1. Assembly
3.1.2. Connections
3.2. si629 C (panel mount)
3.2.1. Assembly
3.2.2. Connections
3.3. Cell cables
3.3.1. Cells with MP-5 connector
3.3.2. Cells with connector S8
3.4. Protective wiring of switching contacts
4. Operation
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
4.1. Description
4.2. Setting up
4.3. Quick guide
4.4. Configuration
4.5. Cell constant selection
4.6. Calibration
4.6.1. Recognized standards
4.7. Programming
4.8. Measurement
4.9. Reajuste de conductividad
4.10. Manual control of relays and test 4-20 mA
4.11. Data Logger
4.12. Access codes.
. . . . . . . . . . . . . . . . . . . . . . 5
. . . . . . . . 5
. . . . . . . . . . . . . 6
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. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
. . . . . . . 12
. . . . . . . . . 13
. . . . 13
. . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
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. 24
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. . . . . . . . . . . . . . . . . . . . . . . . . 26
ENGLISH
5. Maintenance
5.1. Cleaning
5.2. Fuse replacement
6. Error messages
7. Replacement parts
8. Warranty and liability
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
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. . . . . . . . . . . . . . . . . . . . . . . . 29
. . . . . . . . . . . . . . . . . . . . 30
Contact information
1
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1. Technical specifications
Measuring ranges
Conductivity 0.1 µS/cm to 200 mS/cm Salinity 0.0 mg/l to 278 g/l Temperature --20 to 150 °C
Measuring error
Conductivity 1% (±1 digit) Salinity 1% (±1 digit) Temperature 0.5°C (±1 digit)
Reproducibility
Conductivity ±0.1% (±1 digit) Salinity ±0.1% (±1 digit) Temperature ±0.1°C (±1 digit)
Automatic temperature compensation
With Pt 1000 probe By entering data on the keypad
Temperature coefficient, TC
Selectable between 0 and 5 % / °C
Reference temperature , RT
Selectable between 20 and 25 °C
Accepted cells
2-pole cell, constant between 0.05 and 50 cm
-1
Recognised standards
147 µS/cm, 1413 µS/cm and 12.88 mS/cm (25°C)
Calibration possibilities
With 1, 2 or 3 standards Access code: 100 With possibility to readjust de conductivity value
Accepted calibration, 2 or 3 standars
Diference <30 % between the obtained cell constants
Control mode
ON / OFF A relay programmable as maximum or minimum Activation relays lag 2 seconds
Language
English, German, Spanish, French, Italian, Portuguese
Display
Alphanumeric backlit LCD with 2 lines of 16 characters
Inputs and outputs
• 21 mA or the last mA value measured for the instrument in hold
• 22 mA for the alarm with option to deactivate it
Relay
1 limit relay, with no potential. NO contact 1 limit or cleaning relay, free of potential NO Contact 1 alarm relay, with no potential. NC Contact Maximum load: in CA < 24 V / < 3 A / < 72 VA
Maximum cable length
25 m
Power supply
230 or 24 VAC ±10 %, 45-65 Hz, (115 VAC under demand) Consumption 4 VA Protection: Class II Overvoltage category: II
EC Directives
Electrical security according to 2006/95/EC Electromagnetic compatibility according to 2004/108/EC
Environmental conditions
Working temperature: 0 to 50 °C (32 to 122 °F) Storage temperature: –20 to 65 °C (–4 to 149 °F) Relative humidity < 80 % (non condensing) Max. height 2.000 m. at 230 V; 3.000 at 24 V
Enclosure
si629 C (wall mount): Thermoplastic material, protection IP55. Flame rating HB si629 C (panel mount): Noryl, protection IP54. Flame rating FV-1
Weight
si629 C (wall mount): 700 g si629 C (panel mount): 600 g
Dimensions
si629 C (wall mount): 105 x 170 x 100 mm (4 x 6.7 x 3.9 in.) si629 C (panel mount): 96 x 96 x 100 mm (3.8 x 3.8 x 3.9 in.)
Warranty
Instruments: 2 years
2 pole cell, terminal strip Pt 1000 ATC, terminal strip Analogic output, galvanically isolated:
• 4 to 20 mA for measurement (R máx. = 500 Ω)
Specifications are subject to change without notice.
ENGLISH
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1. Technical Specifications
1.1. Dimensions
si629 C (wall mount)
105 mm
4.1 in
6.7 in
170 mm
45 mm
1.8 in
50 mm
2 in
si629 C (panel mount)
90 mm
3.5 in
3.5 in
90 mm
3.8 in
96 mm
80 mm
3.1 in
96 mm
3.8 in
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7 mm
0.3 in
2. General information
As a result of constant improvements to our products sometimes differences may exist between this manual and the instructions supplied with the instrument.
ENGLISH
2.1. Safety information
Please, read carefully this information before installing and using the instrument ! Pay attention to all danger and caution statements.
2.1.1. Use of hazard information DANGER
Indicates a potentially or imminently hazardous situation that, if not avoided, will result in death or serious injury.
WARNING
Indicates a potentially or imminently hazardous situation that, if not avoided, may result in death or serious injury.
CAUTION
Indicates a potentially hazardous situation that, if not avoided, may result in minor or moderate injury.
Important note
Indicates a situation that, if not avoided, could lead to damage to the instrument. Important infor­mation that requires special emphasis.
Note
Information that supplements points in the main text.
Precautionary labels
Read carefully all labels and tags attached to the instrument.
This symbol references the instruction manual for operation or safety information.
This symbol indicates that a risk of electrical shock or electrocution exists.
This symbol indicates the connection for Protective Earth.
This symbol indicates ground connection.
This symbol identifies a fuse.
Electrical equipment marked with this symbol may not be disposed of in European public disposal sys­tems after 12 August of 2005. In conformity with European local and national regulations (EU Directive 2002/96/EC), European electrical equipment users must now return old or end-of life equipment to the Producer for disposal at no charge to the user. Note: For return for recycling, please contact the equipment producer or supplier for instructions on how to return end-of-life equipment, producer-supplied electrical accessories, and all auxiliary items for proper disposal.
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2. General information
DANGER
• Remember that the voltage across accessible parts of the open instrument, may be dangerous to life. Do not open the instrument when it is connected to the power supply, there are areas whose voltage could cause death.
• Always disconnect power to the instrument before it is opened.
• Repair or adjustment of an opened instrument under voltage shall be carried out only by a qualified technician who is aware of the hazards involved.
• Never work in an environment subject to explosion hazards. The housing of the instrument is not gas tight.
• The Company will not be responsible for any physical damage caused by non authorised work or manipulation.
• It is the responsibility of whoever uses this instrument to consult and establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
• Before connecting the instrument to a power supply unit, make sure that the mains voltage lies within the range:
230 or 24 V AC ±10%, 45-65 Hz (standard
version).
115 V AC ±10%, 45-65 Hz (under demand).
Important notes
• Read carefully the manual of the instrument.
• Avoid direct sunlight over the instrument.
• Exclude the following environmental influences:
- vibrations
- atmospheric humidity higher than 80 %
- corrosive gases present
- temperature < 0 °C, or > 50 °C (< 32 °F, or >
122 °F).
- powerful electric and magnetic fields.
• Only use original accessories and spare parts.
• Have the instrument serviced only by the Company Service.
2.2. General product information
Proper use
The si629 C is used for conductivity, salinity and temperature measurement in food industry, waste water, in the environment, etc.
2.3. Items supplied
si629 C (wall mount)
• Instrument (with strips for connections).
• User manual.
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si629 C (panel mount)
• Instrument (with strips for connections).
• Clamps to fix to the panel.
• User manual.
3. Installation
3.1. si629 C (wall mount)
DANGER
Only qualified personnel should conduct the tasks described in this section of the manual.
3.1.1. Assembly Wall mounting
Open the case by unscrewing the 4 A screws.
25 mm
1 in
50 mm
2 in
A
50 mm
2 in
ENGLISH
115 mm
4.5 in
25 mm
1 in
Front view Side view Rear view
For wall mounting of the instruments, use the B drill holes indicated on the scheme.
Pipe or column mounting
Use the pipe adaptor, PN LZU9120.99. Install the pipe adaptor on the rear part of the instrument using both C drill holes as indicated on the figure. Fit the unit with two clamps to the column.
C
C
B
Cable tie
Rear view Pipe adaptor Instrument mounted
7
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3. Installation
Details
To open the transparent front door, press with two fingers the part marked with (
) in the scheme.
Cable glands.
On the lower part of the instrument there are 5 cable glands, 2 PG 7 and 3 PG 9.
PG 7 (2 units)
PG 9 (3 units)
3.1.2. Connections
When making any wiring connections to the instrument, any warnings and notes found throughout the manual must be adhered to. For more safety information see “Safety information” on page 5.
DANGER
Always disconnect power to the instrument when making any electrical connections.
System functions
1,2 Voltage 230 or 24 VCA ± 10%. (115 VCA upon request).
3 Ground connections, see
notes (
page 9). 4,5 Current output 4-20 mA (EC). 6,7 Input for temperature probe. 8 Cell cable shielding 9 to 12 Entrada para célula de 2 polos. 13,14 Limit 1 relay contacts. 15,16 Alarm relay contacts. 17 to 19 Limit 2 or Cleaning relay contacts.
DANGER
High-voltage wiring for the instrument is protected by a protective casing. The protective casing
Important
must remain in place unless a qualified installation technician is installing wiring for power.
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3. Installation
Terminal assignment (interior panel)
Important notes:
• El si629 C does not require ground conec­tion (3 or 4 terminals).
• In environnements with interference prob-
VCA
WHEN IT IS ON, IT INDICATES A FUSED FUSE.
4-20 mA
Pt 1000
CELL
L 1
A
lems it is recommended to connect the in­strument to ground in terminal 3.
If ground connection is not available, it is
recommended to leave terminal 3 free and connect the additional shield of the triaxial cable to the terminal 8 (Pt 1000 shielding).
ENGLISH
L 2 / C
DANGER
Relays:
- Limit the current up to 3 A by using one fuse.
- Do not connect cables with voltage higher than 24 V.
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3. Installation
3.2. si629 C (panel mount)
DANGER
Only qualified personnel should conduct the tasks described in this section of the manual.
3.2.1. Assembly
For the si629 C mounting a drill hole is required according to the diagram.
92 mm
3.7 in
3.7 in
92 mm
Panel
After putting the instrument in the panel, it must be fitted using two clamps as indicated in the figure.
Drill hole
21 mm
0.8 in
80 mm
3.1 in
7 mm
0.3 in
Plug-in screw connector Clamp to fix to the panel
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Side view
3. Installation
When making any wiring connections to the instrument, any warnings and notes found throughout the manual must be adhered to. For more safety information see “Safety information” on page 5.
DANGER
Always disconnect power to the instrument when making any electrical connections.
3.2.2. Connections System functions
1 Ground connection, see Important
notes (page 12).
2,3 Power supply 230 or 24 VCA ± 10%. (115 VCA upon request). 4,5 Alarm relay contacts. 6,7 Limit 1 relay contacts. 8,9 Limit 2 or Cleaning relay contacts. 10,11 Current output 4-20 mA (EC). 12 to 15 Input for 2 pole cell. 16 Cell cable shielding. 17,18 Input for temperature probe.
DANGER
High-voltage wiring for the instrument is protected by a protective casing. The protective casing must remain in place unless a qualified installation technician is installing wiring for power.
ENGLISH
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3. Installation
Terminal assignment (rear panel)
Important notes:
• El si629 C
does not require ground
connection (terminal 1).
• In environnements with interference problems
CRISON INSTRUMENTS, S.A.
E-08328 ALELLA - Barcelona
Made in Spain
Transmitter si629 C
S/N:
IP 54
CELL4-20 mA
it is recommended to connect the instrument to ground using terminal 1.
It is also recommended to use shield cables
for the cell signal (triaxial cable), and the temperature probe.
The external shield of the triaxial cable and
the temperature cable must be connected to
RED
VCA
A
L 2 / C
L
terminal 16.
DANGER
Relays:
- Limit the current up to 3 A by using
one fuse.
- Do not connect cables with voltage higher than 24 V.
3.3. Cell cables
Compensation of the cable length
To minimize the effect of the cable resistance in a conductivity measurement, the cable length is compensa­ted by the 4-wire system. With the Pt 1000 temperature sensor, the cable resistance has little importance. However, in order to reduce the resistance of the conductor to a half, 2 cables have been connected to the ends of the sensor.
3.3.1. Cells with MP-5 connector
TERMINALS
MP-5 connector, 5 contacts
si629 C
(wall mount)
618 White 618 Brown 717 Pink 7 17 Yellow 816 Shield
915 Green 10 14 Blue 11 13 Gray 12 12 Red
si629 C
(panel mount)
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COLOUR
3. Installation
3.3.2. Cells with connector S8
TERMINALS
si629 C
(wall mount)
9 12 Middle 10 13 Middle 11 14 Shield 12 15 Shield
si629 C
(panel mount)
COLOUR
ENGLISH
Important note:
Fit a jumper between terminals 9 and 10 (12 and 13 in panel mount instrument) and another between the terminals 11 and 12 (14 and 15 in panel mount instrument).
3.4. Protective wiring of switching contacts
Relay contacts are subjected to electrical erosion. Especially with inductive and capacitive loads, the service life of the contacts will be reduced. For suppression of sparks and arcing, components such as RC combinations, nonlinear resistors, series resistors and diodes should be used.
Typical protective wirings
AC applications with inductive load
DC applications with inductive load
AC/DC with capacitive load
RC
Load
RC
Contact relay
Typical RC at 230 VAC: Capacitor 0.1 µF/630 V Resistor 100 Ω/1 W
Diode 1N4007
Maximum relays load: AC < 24 V / < 3 A / < 72 VA.
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Load
R
R, for example:
5 Ω / 1 W at 24 V / 0.4 A
13
4. Operation
4.1. Description
Display
si629 C have an alphanumeric display that explains itself. One of the most significant screens is des­cribed below as an example:
Measured value.
MEASURING 21.3 °C
10.9µS/cm @ 25 °C
Sample temperature Resolution: 1 °C manual selection.
0.1 °C measuring with Pt 1000
Measuring units.
Keys
Reference temperature
25 or 20 °C
ENTER.
• Horizontal movements to move forward in the “diagram”.
• Acceptance of numerical values. ESCAPE.
• Horizontal movements to move back in the “diagram”.
• Vertical movements to move back in the “diagram”.
• To erase numerical values.
• Modification of numerical values.
• Cursor “>” movements on the screen.
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4. Operation
4.2. Setting up
Connect the si629 C to mains. At power up the first time only the following screens will appear:
ENGLISH
si629_C
V1.0
IDIOMA >Español
Italiano
Possibility to select other language with keys.
Français
English
MEASURE
MEASURING 22.3°C
µS/cm
545
@25°
Deutsch
Português
The instrument is already measuring conductivity, with the following factory settings:
• Temperature coefficient 2% / °C.
• Cell constant C=1 cm
-1
.
• Reference temperature, RT, at 25°C.
• Relay 1, limit activated at 1000 µS/cm, and deactivated at 800 µS/cm (measuring salinity, activated at 1 mg/l and deactivated at 0.8 mg/l).
• Relay 2, cleaning during 3 sec each hour, with 5 sec of post-cleaning time.
• Alarm relay, activation after 10 min of reading out of limits.
• Current output 4 mA = 200 µS/cm, 20 mA = 2000 µS/cm (measuring salinity 4 mA = 0.2 mg/l, 20 mA = 2 mg/l).
• Current output with the instrument in “Hold” mode, 21mA.
• Data Logger deactivated.
To modify this configuration see page 17.
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4. Operation
4.3. Quick guide
This page shows the instrument’s operation by blocks. It is intended to provide a quick idea about all the instrument’s capabilities and how to gain access to them.
MEASURING 22.3°C
µS/cm
545
@25°
Security acces code.
It limits the access to calibration or programming of the instrument
CODE 000
Vary the underlined digit with
and accept with .
Authorised code = 100
by non authorised personnel. When the “Code” screen has been shown for more than 30 sec. the instrument will automatically return to MEASURE.
Instrument in “Hold” state
When being in the gray zone, the instru­ment is in hold state:
• Limit and cleaning relays are open. (Alarm OFF).
• According to the configuration the cu­rrent output is frozen at 21 mA or at the mA corresponding to the last measured value.
(*) When being in Test 4-20 the current is the one programmed manually to be able to carry out the test.
To quit the hold state it is necessary to re­turn to Measure. The Current output 4-20 and the Relays will activate in 10 sec.
MEASURE
CALIBRATE
CELL
CONFIGURATION
LIMITS
ALARM
CLEANING
OUTPUT 4 to 20 mA
HOLD
LANGUAGE
MANUAL RELAY
TEST 4 to 20 mA
DATA LOGGER
See “Calibration“
(page 18)
See “Configuration“
(page 17)
See “Programming ...”
(page 20-21)
See “Manual control
of relays
(page 24)
See “Test 4-20 mA“
(page 24) (*)
See “Data logger““
(page 25) (*)
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4. Operation
4.4. Configuration
Follow the diagram for
MEASURING 22.3°C
545µS/cm @25°C
modifying the configuration.
CODE 000
CONFIGURE
Conf. > Ref. Temp. T.C. Relay 2 Type measurement
Press until the display MEASURE is reached.
MEASURING 22.3°C
545µS/cm @25°C
LIMITS
MEASURE
Enter code 100 and y accept with
Press until the desired option is reached.
Ref. Temp. > 25 °C 20 °C
T.C. 2.00%
Relay 2 > Cleaning Limit 2
STORING DATA
> Conductivity (*) Salinity
Note: During Configuration the instrument is in Hold state:
• Limit and cleaning relays contact are open. (Alarm OFF).
• Current output is frozen at the value program­med in Hold.
To quit the Hold state it is necessary to return to Measure. The Current output 4-20 and the Relays will activate in 10
ENGLISH
4.5. Cell constant selection
Select the constant cell before modifying the configuration.
Select the nominal value of the cell in use. If the exact value is known, introduce it and no need to calibrate.
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MEASURING 22.3°C
545µS/cm @25°C
CODE 000
Enter code 100 and y accept with
Press until the desired option is reached.
CELL
CELL
-1
1.000 cm
Vary with and accept with
DATA
STORING
17
4. Operation
4.6. Calibration
This process involves adjusting the read values by a conductivity measuring system (instrument and cell) ac­cording to the values of standard solutions. Calibration is very important for highly accurate readings. The equipment is capable of one-, two- and three-point calibration, and automatically recognises 147µS/cm, 1413 µS/cm and 12.88 mS/cm standards. The calibration parameters are stored in the memory until a new calibration is performed.
MEASURING 22.3°C
545
µS/cm
@25°
CODE 000
Introduce the code 100.
One-point calibration
This form of calibration is acceptable when measuring conductivity values around that of the used standard. This is the most common type of calibration. In this type, 1413 µS/cm is the most commonly-used standard.
23.2°C Standard 147 µS/cm
Two-point calibration
This type of calibration is recommended for work in high or low conductivity regions where accuracy is required. The 147µS/cm and 1413 µS/cm standards should be used for low conductivity regions, and 1413 µS/cm and
12.88 mS/cm for high conductivity measurements.
Three-point calibration
Standard 1413 µS/cm
This type of calibration is recommended when the con­ductivity of the samples to be measured ranges from low to high.
Notes:
When a calibration in 2 or 3 points is performed, start with the standard with lowest conductivity. In this way, a contamination is avoided.
During Calibration the instrument is in Hold state:
• Limit and cleaning relays contact are open.(Alarm OFF).
• Current output is frozen at the programmed value in Hold.
To quit the Hold state it is necessary to return to MEASURE. The Current output 4-20 and the Relays will activate in
10 sec. For practical reasons, in calibration is recommended
to select the temperature manually even if you have connected a CAT probe (Pt 1000/Pt 100).
23.2°C Standard 12.88 mS/cm
P1=147,0 µS/cm
C
P2=1413,0 µS/cm
C
CALIBRATE
CAL. 23.2°C
142.6 µS/cm
23.2°C
CAL. 23.2°C 1364 µS/cm
=0,393 cm
1
=0,397 cm
2
-1
-1
to MEASURE
If you have a cell without CAT, manually enter the temperature value.
Once the reading is stable, the display changes automatically.
Press to perform 3 point calibration.
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4. Operation
4.6.1. Recognized standards
Table of values according to temperature.
Values stored in the si629 C.
°C µS/cm µS/cm mS/cm
15.0 119 1147 10.48
16.0 122 1173 10.72
17.0 125 1199 10.95
18.0 127 1225 11.19
19.0 130 1251 11.43
20.0 133 1278 11.67
21.0 136 1305 11.91
22.0 139 1332 12.15
23.0 142 1359 12.39
24.0 145 1386 12.64
25.0 147 1413 12.88
26.0 150 1440 13.13
27.0 153 1467 13.37
28.0 156 1494 13.62
29.0 159 1522 13.87
30.0 162 1549 14.12
ENGLISH
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4. Operation
4.7. Programing
The instrument is supplied with the default configuration specified in Start-up, page 15. To modify the default configuration and adapt it to specific applications follow the diagram below.
Limit. Select the relay values. Input “ON” (closed contact). Output “OFF” (open contact). Conductivity: between 0.0 µS & 200 mS. Salinity: between 0.0 mg/l & 278 g/l
* LIMIT 2 / CLEANING
The option LIMIT 2 will only appear if relay 2 is configured as a limit relay.
Alarm
Selection of the time lag before activating the alarm. Select between 1 and 99 seconds, minutes or hours. 0=deactivated.
Cleaning
T on: cleaning time. Min. value: 3 sec. (relay activated or cleaning). To deactivate the cleaning function, T on=0 must be programmed. Toff: Cleaning deactivation time. Min. value: 3 s (relay deactivated ). Example: Ton: 3 sec., Toff: 1 h; it will clean during 3 sec. each hour. Post-cleaning time: 0 to 99 sec.
Output current.
Select de conductivity values corresponding to the current output (4 mA and 20 mA). Conductivity: between 0.0 µS & 200 mS. Salinity: between 0.0 mg/l & 278 g/l t
Hold. Selection of the current output when the instrument is in Hold state: fixed at 21 mA or at the mA corresponding to the last measured value.
MEASURING 22.3°C
545
4 to 20 mA OUTPUT(*)
µS/cm
@25°
CODE 000
LLIMIT (*)
ALARM
CLEANING
HOLD
Continue at
the next page.
Enter code 100
Press until the desired option is reached.
ON - - - - - - OFF
1000 µS 800 µS
Vary the underligned digit with
and accept with
ALARM
01 min
CLEANING
Ton= 03 s Toff=01 h
4 mA 20 mA
STORING DATA
200 µS 2.0 mS
> 21 mA last value
Vary with
(*) LIMIT and 4 - 20 mA OUTPUT: Allow the introduction of 5 digits. Place the decimal on the desired point.
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4. Operation
4.7. Programming (continuation)
ENGLISH
Language. Select the language among English, German, Spanish, French, Italian, Portuguese.
LANGUAGE
Italian
Press until MEASURE is reached.
MEASURE
MEASURING 22.3°C
µS/cm
545
Notas: During Programming the instrument is in Hold state:
• Limit and cleaning contact relays are open. (Alarm OFF).
• Current output is frozen at the value programmed in Hold.
To quit the Hold state it is necessary to return to MEASURE. The Current output 4-20 and the Relays will activate in 10 sec.
@25°
LANGUAGE > Spanish
STORING DATA
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4. Operation
4.8. Measure
Conductivity, salinity and temperature measurement
The value of the specific conductivity or salinity, the sample temperature in °C and the reference tempe­rature appear simultaneously on the display. If the Pt 1000 temperature probe is not connected it is necessary to inform the instrument about the temperature of the solution using the arrow keys Conductivity cells incorporate a Pt 1000 temperature sensor.
Conductivity measurement
.
... with Pt 1000 probe
MEASURING 22.3°C
µS/cm
545
Temperature
measured
automatically
MEASURING 22.3°C
µS/cm
545
Salinity measurement
... with Pt 1000 probe
@25°
@25°
... without Pt 1000 probe
MEASURING 25°C
545
MEASURING 22°C
565
CODE 000
µS/cm
@25°
Manually
entered
temperature
µS/cm
@25°
MEASURING 22.3°C
117.7 mg/l
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4. Operation
4.9. Conductivity readjustment
The si629 C allows readjusting the conductivity measured value by modifying the reading that appears on the dis­play. Previously the conductivity of the sample must have been measured with a perfectly calibrated instrument. During the readjustment the si629 C behaves as it was calibrated with one buffer only. Every time the si629 C is calibrated in the conventional manner, the readjustment is lost.
MEASURING 18.3°C
12.15
INDIRECT CAL.
12.15 mS
INDIRECT CAL.
12.15 mS
P: 12.28mS
C: 0.700 cm
MEASURING 18.3°C
12.28
mS/cm
mS/cm
@25°
Press for more than 3 sec.
or
+
or
+
-1
@25
ENGLISH
Important: It is not possible to perform salinity readjustment.
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4. Operation
4.10. Manual control of relays and test 4-20 mA
To verify the correct functioning of the relays and 4 to 20 output, enter the options:
Manual Relay
Pressing When releasing the
Test 4 to 20 mA
Select in the display, the µS/cm or mg/l value desired to simulate. The current output must be the indicated in the display, according to the selected values in Programming Output 4 to 20, see page 20-21.
MEASURING 22.3°C
545
the selected relay is activated (except the alarm relay, which is deactivated).
µS/cm
@25°
CODE 000
key the selected relay is deactivated.
Enter code 100 and y accept with
Press until the desired option is reached.
RELAY LIMIT OFF 545 µS
25.0°C
MAN. R. > LIMIT 1
MAN. RELAY
CLEANING/LIMIT 2
ALARM
CLEANING R./LIMIT 2 O F F 545 µS
25.0°C
ALARM
545 µS
Press
o activate any of the relays
TEST 4-20 mA
Press up to return to MEASURE
200 µS
Vary the underligned digit with
and accept with
MEASURE
MEASURING 22.3°C
µS/cm
Io (4 to 20) =4.00 mA
545
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@25°
(ON). When not pressing ENT anymore, it deactivates (OFF).
Nota: During Manual control of relays and Test 4 to 20 the instrument is in Hold state:
• Limit and cleaning contact relays are open. (Alarm OFF).
• Current output is frozen at the value programmed in Hold, except the
option “Test 4-20” that maintains the manually programmed current output for carrying out the tests.
To quit the hold state it is necessary to return to MEASURE.
OFF
25.0°C
4. Operation
4.11. Data Logger
The si629 C is able to store up to 200 data in memory. When the data logger is full, data will be stored replacing the eldest ones. Data can be stored following two different criteria:
Interval: data are stored with the frequency programmed in Interval:
XX min.
MEASURING 22.3°C
µS/cm
545
@25°
Event: data are stored only if the values are higher o lower than the
programmed value, and with the selected frequency.
ENGLISH
CODE 000
DATA LOGGER
D. LOG. > View Program Erase
MEASURE
MEASURING 22.3°C
µS/cm
545
@25°
Enter code 100 and y accept with
Press until the desired option is reached.
Max 12-04 / 12:22 1250 µS/cm 25.2°C
VIEW > Max. Min. All
Press to select the desired option.
It displays only the maximum stored reading.
Min 12-04 / 11:21
520 µS/cm 25.2°C
It displays only the minimum stored reading.
001 12-04 / 11:01
545 µS/cm
It displays all stored data. The first record will be displayed, and then it will automatically go on one by one every 1 sec. Press Press to stop the automatic view. The display will be frozen at the last displayed record. Press Press
PROG. > Interval * Event
Select the value and the unit (sec., min. or hours)
Start Stop * Date Hoor
Press to select the desired option. Select START to start the storage of data. Select STOP to end this option.
ERASE
25.2°C
to quit the View display.
to see data in increasing order. to see data in decreasing order.
Intervalo t= 30 m
Event EC <XX.XX t= 30 m
Date 10-03-2004
Hour 12:04:56
DATA LOGGER ERASE
To empty the data logger select the option erase.
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4. Operation
4.12. Access codes
The code 100 is for access to the calibration and programming of the instrument. There are codes with other functions:
Code Action
100 Main Menu.
401 Modification of the relay lag of the limits relays activation and deactivation.
Standard value: 2s. Programmable values: 0 to 99 s
413 Modification of the time for alarm activation when there is out of range reading.
Standard value: 60 s. Programmable values: 0 to 99 s/min/h
473 Modification of the delay time activation of the analogical output 4 to 20 mA after quitting Hold.
Standard value: 10 s. Programmable values: 0 to 99 s
497 Possibility to adjust the temperature for minimizing the effect of long cables.
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