ASTLES SENSOLUTION C800 User manual

C800 Analyser
Operating Manual
902857-A - C800 Analyser Operating Manual.docx
Astles Control Systems Ltd.
B3 Regent Park, Summerleys Road, Princes Risborough, Bucks. HP27 9LE.
Tel: [phone] [email protected] http://www.astles.co.uk/
Installation and Operating Instructions

C800 Analyser Operating Manual
902857-A - C800 Analyser Operating Manual.docx
2
Contents
1. Introduction ........................................................................................................................................3
2. Mechanical Installation.......................................................................................................................4
2.1. Open Installation..........................................................................................................................4
2.2. Sighted Enclosure Installation......................................................................................................5
3. Electrical Installation...........................................................................................................................6
3.1. Power supply Requirements........................................................................................................6
3.2. 24V Supply Wiring........................................................................................................................6
3.2.1. Connection via an M12 Socket..............................................................................................6
3.2.3. Direct Connection to Analyser..............................................................................................7
3.3. Sensor Wiring...............................................................................................................................7
4. Display and Keypad Functions ............................................................................................................8
4.1. Display..........................................................................................................................................8
4.2. Keypad Description......................................................................................................................8
5. Pin Code ..............................................................................................................................................9
6. Hold Mode ..........................................................................................................................................9
7. Basic Setup........................................................................................................................................10
7.1. Range Setup ...............................................................................................................................10
8. Calibration.........................................................................................................................................11
8.1. Conductivity Calibration.............................................................................................................11
8.2. Temperature Calibration............................................................................................................12
9. Main Menu........................................................................................................................................14

C800 Analyser Operating Manual
902857-A - C800 Analyser Operating Manual.docx
3
1. Introduction
Thank you for selecting a C800 conductivity Analyser. The analyser converts an input from an
electrochemical sensor to a 4-20mA signal for a PLC or chart recorder. The C800 is a microprocessor-
based instrument that is designed to be sturdy and user-friendly.
This analyser has many user-friendly features –all of which are completely accessible through the
water-resistant membrane keypad.
Please read this manual thoroughly before operating your analyser.

C800 Analyser Operating Manual
902857-A - C800 Analyser Operating Manual.docx
4
2. Mechanical Installation
The C800 may be supplied in an aluminium enclosure connected to a
Model 300 or as a stand-alone unit.
To install the sensor:
•Cut a 75mm diameter hole in the tank lid.
•Insert the Model 300 through the hole and allow the probe to
rest on the flange.
•Loosen the grub screw in the flange to adjust the depth of the
probe.
There is normally no need to bolt the flange down.
2.1. Open Installation
If the analyser is to be mounted separately, use an Astles Control Systems universal mounting kit
(500/9501) to fix it to a pipe or wall. To attach the analyser to the mounting kit use M6 bolts,
washers, and nuts.

C800 Analyser Operating Manual
902857-A - C800 Analyser Operating Manual.docx
5
2.2. Sighted Enclosure Installation
To install the analyser into a sighted enclosure, the glands must be removed before passing the box
through the window. Ensure the screen gasket is in place. Secure the analyser to the front of the
enclosure using two screws either side of the analyser, shown below.

C800 Analyser Operating Manual
902857-A - C800 Analyser Operating Manual.docx
6
3. Electrical Installation
3.1. Power supply Requirements
The C800 requires a 24V ±10% dc supply. Other devices such as chart recorders and PLCs may be
connected in series. Use screened cable if the 4-20mA conductivity signal is required.
3.2. 24V Supply Wiring
3.2.1. Connection via an M12 Socket
To connect the analyser via an M12 socket, wire it as shown:
All three wires from the M12 socket must pass through a gland in the bottom of the analyser.

C800 Analyser Operating Manual
902857-A - C800 Analyser Operating Manual.docx
7
3.2.3. Direct Connection to Analyser
To wire directly to an external power source, wire +24V into the +ve terminal and 0V to the -ve
terminal. Use 2-core screened cable, such as Belden 8760, through a gland in the bottom of the
analyser. Only connect the cable screen at the power source, not in the analyser.
3.3. Sensor Wiring
Connect a Model 300 conductivity sensor through a gland in the bottom of the analyser.
Connection
Terminal
Model 300 Wire Colour
Conductivity Signal
COND 1
Red
Conductivity Signal
COND 2
Black
Pt100 Temperature Signal
RTD SENSE
Green
Pt100 Temperature Reference
RTD RETURN
White
Pt100 Wire Compensation (Optional)
RTD COMP
N/A
If you are using a 3-wire temperature compensator, connect the cable compensation wire to RTD
COMP and remove jumper J1.

C800 Analyser Operating Manual
902857-A - C800 Analyser Operating Manual.docx
8
4. Display and Keypad Functions
4.1. Display
1. Measurement mode indicator
2. Measurement reading
3. Hold mode indicator
4. Automatic Temperature Compensator indicator
5. Temperature Reading
4.2. Keypad Description
The C800 analyser has 6 buttons on the keypad allowing for easy and quick operation of the
analyser.
1. CAL: Takes you directly to the calibration menu. See section 8.
2. (Up-Arrow): Allows you to scroll through various menus or increment calibration values.
3. HOLD: Will enable the hold function. See section 6.
1
2
3
4
5
1
2
3
4
5
6

C800 Analyser Operating Manual
902857-A - C800 Analyser Operating Manual.docx
9
4. (Back): Navigates to the previous screen. Hold the button for 2 seconds to return to the
primary display.
5. (Down-Arrow): Allows you to scroll through various menus or decrease calibration values.
6. (Enter): Will confirm selections in menus and calibration values. Pressing this button
when on the primary display will navigate to the main menu.
5. Pin Code
The C800 analyser pin code is “2000”. This code
is required to access the instrument functions.
6. Hold Mode
The hold mode on the C800 analyser will fix the output current at the level it was at when the button
was pressed.
To initiate the hold mode either press the HOLD button or navigate to the HOLD menu and enable it
there. There is a 20 minute timer which can be restarted by pressing the HOLD button twice.
The displayed measurement will be unaffected by the hold mode.

C800 Analyser Operating Manual
902857-A - C800 Analyser Operating Manual.docx
10
7. Basic Setup
7.1. Range Setup
Navigate to the RANGE menu to set an appropriate conductivity range for the solution you are
measuring.
Navigate to the DSL-DSH menu to specify a custom range for the 4-20 mA current output.
On an aluminium beverage can line, the typical ranges for stages 3 & 5 are 0 –2000 µS/cm, and for
stages 6 & 7 are 0.0 –200.0 µS/cm.

C800 Analyser Operating Manual
902857-A - C800 Analyser Operating Manual.docx
11
8. Calibration
Before starting calibration ensure the analyser is set up correctly by referring to section 7. To
perform calibration you will require conductivity standards. Standards are available in 84μS and
1413μS and can be purchased by emailing [email protected].
When calibration has started the analyser will go into a temporary hold mode until the calibration is
complete.
8.1. Conductivity Calibration
Different ranges require different conductivity standards for calibration. For 0.0-200.0 range use
84μS and for 0-2000 range use 1413μS. The calibration standard must be within 10% –90% of the
maximum conductivity.
To calibrate the analyser perform a calibration using conductivity standards. The calibration will fail
either if the calibration factor is above 2.
To start a calibration press the CAL button.
Dry the sensor and hold it in air. Check the
process value reads 0μS.
Place the sensor in the standard, wait for the
value to settle. Adjust the lower value to match
the conductivity standard and press the
button.
Current process value
Adjusted value

C800 Analyser Operating Manual
902857-A - C800 Analyser Operating Manual.docx
12
Press again to confirm the slope and the
offset. The analyser will then ask if you would
like to reset the runtime, select NO for this.
The sensor is now calibrated.
8.2. Temperature Calibration
By default ATC mode is enabled.
Temperature calibration is only possible when an ATC probe is fitted. The ATC calibration offset is
limited to ±10 °C.
To calibrate the temperature, navigate to ATC
in the main menu.
ATC must be enabled.
Place the sensor into a solution of stable
temperature. Adjust the offset, with the
arrows, so that the temperature reads the
correct value and press to confirm.
The analyser is now calibrated for automatic
temperature readings.

C800 Analyser Operating Manual
902857-A - C800 Analyser Operating Manual.docx
13
If there is no ATC available, disable ATC mode
and manually set the process temperature.
Set the manual temperature to the desired
value and press to confirm. The default
value for manual temperature is 20.0 °C but it
can be set between 0 –100 °C.
The analyser is now set up with a manual
temperature.

C800 Analyser Operating Manual
902857-A - C800 Analyser Operating Manual.docx
14
9. Main Menu
The main menu can be accessed by pressing the button and contains 13 different options. This
section will give an explanation to those options.
CALIBRATE –This takes you to the calibration
screen. This has the same function as pressing
the CAL button. See section 4.2 for further
information.
CAL.DATA –This shows the raw data from the
last calibration.
CELL CONSTANT –This shows the cell constant.
This value should match the sensor connected.
CAL. FACTOR –This shows the calibration
factor calculated from the most recent
calibration. This value can be edited here.

C800 Analyser Operating Manual
902857-A - C800 Analyser Operating Manual.docx
15
RANGE –Select the range appropriate for the
process. Lower ranges give greater accuracy
and higher ranges permit higher readings.
DSL-DSH –This allows the user to set the low
and high process values that correspond to 4
and 20mA respectively. Initially the arrows will
adjust DSL; to adjust DSH press .
ATC –This allows the user to enable or disable
the automatic temperature compensator and
calibrate the temperature probe. See section
8.5 for further information. By default, ATC is
enabled.
TEMP COMPENSATION –Conductivity values
vary with changes in temperature. This value
will compensate for the changes of
temperature.
DAMPING –This "dampens" the primary value
by allowing only half the detected
change per time interval (in seconds). Damping
is adjustable between 0 and 10 seconds in
intervals of 0.1. By default, this is set to 0.2
seconds.
RESET RUNTIME –This will display the current
runtime and allows the user to reset the
runtime of the analyser.

C800 Analyser Operating Manual
902857-A - C800 Analyser Operating Manual.docx
16
HOLD –This allows the user to enable or
disable hold mode. This has the same
functionality as pressing the HOLD button. See
section 6.
SYSTEM INFO –This displays system
information for the analyser:
•Conductance
•Loop Current
•Runtime
•Runtime accumulated
•ATC resistance
•Serial number
•Firmware version
•Hardware version
FACTORY RESET –This resets the analyser to its
default settings including clearing calibration
data.

902857-A - C800 Analyser Operating Manual.docx
17

C800 Analyser Operating Manual
902857-A - C800 Analyser Operating Manual.docx
18

902857-A - C800 Analyser Operating Manual.docx
20
Astles Control Systems
B3 Regent Park, Summerleys Road,
Princes Risborough, HP27 9LE. UK.
Tel: [phone]
[email protected]o.uk
http://www.astles.co.uk