Astralpool Guardian Pool NN Manual De Instalación página 8

1.3 MAIN TECHNICAL FEATURES
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Simultaneously measurement of: Free Chlorine, pH, Redox and Temperature
(Optional: Total Chlorine, Combined Chlorine)
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Programming: through keyboard with 4 bubble keys
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LCD STN 240x128 backlighted
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Internal Data Logger Flash 4 Mbit storage equal to 16000 recordings with the possibility to visualize
through tables and charts the measurement trend with the indication of minimum, maximum and
average values of the period
o Recording interval: 00:00 ÷ 99:99 min
o Type: circular / filling
o Visualization: table/chart
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P.I.D. Regulation for pH Output
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RS485 Serial Output: MODBUS RTU protocol with programmable velocity 1200 ÷ 38400 Baud
Rate. for set-up, Real Time condition, or data download
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Nr.4 analogue outputs:
o Quantity: ppm Cl
o Typology: 0.00 / 4.00 ÷ 20.00 mA galvanically isolated
o Limit programming: lower / higher / Inversion
o Max load: 500 Ohm
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Output alarm according to NAMUR 2.4 mA (with range 4/20mA)
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2 Alarm Relay Output (lack of sample water, reagents exhaustion, burnt projector, dirty cell)
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2 Relay Outputs of Set point 2 for Chlorine measurement
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2 Relay Outputs of Set point 2 for pH measurement
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1 Relay Output of Set point 2 for Redox measurement
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1 Relay Outputs of Set point 2 for Temperature measurement (but also Total or Combined Chlorine
on request)
Main hardware characteristics of the device
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The hardware structure of this periphery is based on the adoption of extremely new CPU CMOS
with 16 bits developed specifically for the execution of the so-called "embedded" applications.
•
The card uses an EEPROM to store the Set-up data and flash memories for storage of the archives
of historical data and LOG files of events.
•
The Card has 1 RS485 gate (opto-isolated) for local networks used for connections with local
communication devices (configuration computer, terminals and remote controls etc).
•
The card integrates a Real Time Clock (clock with date) that allows the software to store figures in
a chronological order.
0000138319
pH, Redox, Temperature.
2,
Rev. 3.2
Astralpool multiparameter
USER MANUAL
6