Chauvin Arnoux C.A 10101 Manuel utilisateur

pH-meter & conductivity-meter

DT - Calibration procedure

C.A 10101

C.A 10401

CONTENTS

1. SUMMARY...................................................................................................................................... 3

1.1 General description ............................................................................................................. 3

1.2 Running the device ............................................................................................................. 3

2. FUNCTIONAL VERIFICATION ...................................................................................................... 5

3. ERROR MESSAGES...................................................................................................................... 7

4. FIRMWARE UPDATE .................................................................................................................... 8

4.1 Firmware update using boot loader .................................................................................... 8

5. INSTRUMENT CALIBRATION..................................................................................................... 11

5.1 Calibration of C.A 10101 ................................................................................................... 11

5.1.1 Requirement ........................................................................................................... 11

5.1.2 Calibration connection ............................................................................................ 11

5.1.3 Calibration operation............................................................................................... 12

5.2 Calibration of C.A 10141 ................................................................................................... 19

5.2.1 Requirement ........................................................................................................... 19

5.2.2 Calibration connection ............................................................................................ 19

1. SUMMARY

1.1 GENERAL DESCRIPTION

Instrument

C.A 10101

C.A 10141

Function

pH / ORP meter

Conductivity meter

1.2 RUNNING THE DEVICE

There are two ways to power the device:

- Cells: Open the battery cover at the back of the device and insert 4 AA cells.

- USB: open the USB cover at the bottom of the device and connect a micro USB type B cable in.

On the other side, connect to a powered computer or a USB wall plug.

The device should start. If not, press power button for two seconds.

2. FUNCTIONAL VERIFICATION

This process confirms that the device can work properly but it does not verify the device’s

specifications.

Power up the device with cell as seen previously and then follow the process according to

the device part number

Instrument C.A 10101 or C.A 10141

Needed

material

Computer with Windows ® 7 or later

Micro USB type B cord.

Process

Measure

Connect the sensor and do a measurement in a reference solution.

Note: A sensor calibration is requested to have a precise measurement. Refer to the

user’s manual (to be downloaded from the website) for procedure

- Reset sensor calibration

Keyboard

Press the backlight button , the backlight should be on.

Press the pH/mV button (or the toggle measurement button ).

Measurement displayed should change.

Press the MEM button, MEM should appear temporarily on the display.

Instrument C.A 10101 or C.A 10141

Press , the last calibration coefficients should be displayed. Do a long press on

the same button to back to measurement.

Disconnect the sensor, and press or : temperature (Manual Temperature

Setting) should increase or decrease.

Display

Device off, keep pressing . All the symbols of the display should be on

MEM FULL

REC

MEM

Ref 20°C Ref 25°C

SET COR.TDSREF TEMP

no cor

cor f(T)

cor lin

MTC

ATC

CAL SET

OFFSET

USB

Connect the device to the computer through the USB cord. Windows should mount the

USB Mass storage drive and may ask to format it.

3. ERROR MESSAGES

Instrument may detect some errors, and signal these errors displaying “Er.XX”, with XX the

error code.

Error Signification Action

Hardware malfunction detected

The instrument must be sent back to

customer service.

Error in internal memory

Format it using Windows.

No longer exists on electrochemistry.

The instrument must be sent back to

customer service.

The instrument has not been adjusted or is not correctly adjusted.

Apply the embedded adjustment

procedure.

The update of the internal software is not compatible with the

instrument (the software is that of another instrument of the line).

Not implemented yet.

Install the correct internal software in

your instrument.

The update of the internal software is not compatible with the

electronic boards in the instrument.

Reload the previous internal software

into your instrument.

Recording scheduling error.

Check that the instrument’s time and

the time of the Data Logger Transfer

software are the same.

Calibration error. The measured value is too far from the value of

the standard solution of the selected calibration set.

Check that the solution used in fact

belongs to the selected set. If

necessary, return to the initial

calibration.

Calibration error. The stabilization time is too long.

pH calibration error. Two buffer solutions having the same value

were used for the calibration.

Calibration error (ORP and pH). The calculated offset is too large

(configurable threshold in production, typically 58 mV)

Redo the calibration. If the error

persists, check the buffer solution or

replace the electrode.

pH calibration error. The calculated slope is too large (> 105%) or

too small (< 85%). (Configurable threshold in production)

Redo the calibration. If the error

persists, check the buffer solution or

replace the electrode.

Calibration error. The temperature (ATC or MTC) is outside of the

specifications of the standard solutions.

Redo the calibration in a room where

the temperature lie

s within the

specifications of the buffer solution

Calibration error. The file defining the set of calibration solutions is

missing.

Download it from our web site:

www.chauvin-arnoux.com

Calibration error. The file defining the set of calibration solutions is

not in conformity

Check that it is the right file. If you

have modified it, check the format; in

particular, the decimal separators

must be points, not commas.

Recording error. Power was cut off while recording was in

progress.

Calibration error. Measurement error for the calibration.

4. FIRMWARE UPDATE

The procedure is the same for both instrument, but the firmware to download is specific to each ones.

4.1 FIRMWARE UPDATE USING BOOT LOADER

MEM FULL

REC

MEM

Ref 20°C Ref 25°C

TCOR. TD

REF TEMP

cor

f(T)

cor lin

MTC

ATC

CAL SET

OFFSET

Figure 1 LCD OFF

Start with the instrument off, nothing is displayed on the screen.

Press “MEM/REC” then “ON/OFF” the boot loader goes in the “wait

for firmware update” and display “boot”:

Remark: While “MEM/REC” is kept pressed “boot” is displayed.

The Bootloader revision may be displayed pressing the “Backlight”

button.

MEM FULL

REC

MEM

Ref 20°C Ref 25°C

SET COR. TDSREF TEMP

no cor

cor f(T)

cor lin

MTC

ATC

CAL SET

OFFSET

Once all buttons are released, LCD screen then shows “COPy” and

a virtual USB drive is mounted on the PC: Connect the instrument

to the PC with a micro USB cable.

The user can copy the firmware (file name “firmware.bin”) on the

mounted disk.

Once the file is copied, or if the file is already present on the virtual

USB drive, it can be copied to internal Flash with a short press on

“MEM/REC”.

If the user wants to stop the procedure, it makes a long press on

“ON/OFF”.

MEM FULL

REC

MEM

Ref 20°C Ref 25°C

SET COR. TDSREF TEMP

no cor

cor f(T)

cor lin

MTC

ATC

CAL SET

OFFSET

Figure 2 power ON for a firmware

update

When the user decide to copy the firmware in the internal Flash,

the bootloader

- Check the firmware intergrity (check sum…)

- Erase the whole flash dedicated to applicative firmware.

- Write the internal Flash with the update.

During this step (≈5s) the screen displays ‘LOAd’.

MEM FULL

REC

MEM

Ref 20°C Ref 25°C

SET COR. TDSREF TEMP

no cor

cor f(T)

cor lin

MTC

ATC

CAL SET

OFFSET

Figure 3 update in progress

At the end of the firmware copy, we have a message FAIL or

PASS.

Pressing “ON/OFF” will turn OFF the product (back to “backup

mode”).

Pressing another button will launch the applicative firmware.

In case of “Fail”, pressing a button will turn OFF the product.

MEM FULL

REC

MEM

Ref 20°C Ref 25°C

SET COR. TDSREF TEMP

no cor

cor f(T)

cor lin

MTC

ATC

CAL SET

OFFSET

Figure 4 update PASS

message

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