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ENGLISH
Autodos M
MA60-10E
ENGLISH
Autodos M
MA60-10E
13. Jesco free chlorine electrode (option)
Jesco free chlorine electrode is not marketed by Pahlén AB, but connection is possible if desired.
Note that Jesco uses a separate measuring cell and the corresponding electrode/cell on the Autodos unit must then be plugged.
Maintenance
Refer to the Jesco manual regarding service and maintenance.
Calibration of free chlorine (Jesco chlorine electrode)
NOTE: In order to obtain the correct chlorine value, the measuring cell must first have correct flow for 3 hours so that the glass
balls have time to clean the electrodes. This is vital in order to prevent a zero point error.
1. Activate calibration mode by pressing and holding the
Cal.
button [0] until the “
Active
” LED illuminates.
2. Fill the measuring cell with chlorine-free water and then wait about 10 seconds.
3.
Activate zero point calibration by pressing the ↓ button under display 1. Before calibration can continue, the electrode must
be allowed to measure in the flow cell for about 2 minutes to obtain a correct value.
4. Access calibration mode
Adjust
by pressing and holding the
Cal.
button [0] until the “
Adjust
” LED illuminates.
The meter stores the last measured electrode signal.
5. Take a water sample and determine the correct chlorine value with DPD1.
6.
Set the correct chlorine value with the ↑ and ↓ buttons under display 1.
7. Exit calibration mode
Adjust
by pressing and holding the
Cal.
button [0] until the “
Adjust
” LED goes out.
Flow
Flow must be large enough that the glass balls rotate so forcefully that they reach the top of the measuring cell (but not too
violently). If necessary, the copper plate can be replaced.
14. Autodos PC connection (expansion)
Simply installing an extra circuit board makes it possible to connect Autodos M to a PC.
The PC connection kit includes the following parts: Datalogger with real-time clock and communication module.
The circuit board is connected to the bottom card in Autodos M with a connector and plastic clips.
Externally, the circuit board is connected either to a communication module via a twin-cable connector or via an RJ45 connec-
tor to the serial port of a PC or modem. Program version 1.0 has no support for modem connection. Such support is planned for
later versions.
Identification of a single Autodos M in the twin-cable loop is done through a unique, factory-programmed serial number for each
delivered unit.
The communication program “Autodos Monitor” is used to monitor Autodos M and modify parameters.
The program is described in a separate document.
Datalogger
32kB EEPROM
Real-time clock
24kB (3 days) with minute average values for 4 channels
8kB events (255 events); an event can be e.g. an alarm or a calibration
Communication
module
RS232 PC communication, cables included
Twin-cable connection with Autodos
With recommended cable FKAR-PG 0.5 mm2, up to 200 m and 5 units can be connected to the twin-
cable loop.
External 9 VAC transformer included
