Eagle Microsystems RA1000 - Manual (Page 3)

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I . INTRODUCTION
The RA-1000 Residual Analyzer/Controller is an amperometric instrument
designed to continuously analyze residual levels of free or total chlorine, chlorine
dioxide, or potassium permanganate in water, wastewater or liquids containing
particulates.
II. SPECIFICATIONS
Power Supply 115/230 VAC Switch selectable.
Power Consumption 12W
Display LCD, backlit, 16 characters by 2 lines, 5mm character
height,5x8 character matrix.
Pushbuttons Four, tactile dome.
Relays High residual, low residual, and two spares
Mechanical (AC or DC), Rating (standard) 1.2A,
125VAC resistive or optional 5A @ 250VAC
Cell Au/Cu (Gold anode/Copper Cathode) Galvanic Cell
input
Temperature Thermistor 10kohms @ 25C, Beta=4100
Analog Output Isolated, 4 to 20mA, 500ohm drive. Represents CL
2
residual
Digital Output 20mA Serial (transmits to remote computer)
Instrument Range: 0-0.1, 0-0.2, 0-0.3, 0-0.5, 0-1, 0-2, 0-3, 0-5, 0-10, 0-20,
0-30 mg/l field selectable
Sample Flow: 500 cc/minute: 5 psig maximum
Sample Supply: Continuous. Where sample interruption may be required;
provisions must be made to keep the electrodes wet with
fresh water.
Analyzer Location: As close as possible to the sample point to reduce lag
time.
Speed of Response: 4 Seconds from sample entry to display indication. Full
scale residual change 1-1/2 to 2 minutes.