Thermo Fisher Scientific Alpha DO 2000 - Manual (Page 42)

Instruction manual Alpha DO 2000
8. Technical Specifications
8.1 General Specifications
Dissolved Oxygen
Measuring range 0.00 to 20.00 mg/l or ppm
0.0 to 200.0 %
Resolution 0.01 mg/l or ppm or
0.1 %
Relative accuracy ±1 % of full-scale reading
Temperature
Measuring range -9.9 to +125.0 o C or
+15.0 to +257.0 o F
Resolution 0.1 o C or
0.1 o F
Relative accuracy ±0.5 o C or
±1.0 o F
Sensor NTC 22 kΩ thermistor
Compensation
Temperature Compensation Automatic or Manual
Salinity Compensation 0.0 to 50.0 ppt
(Manual setting and automatic correction)
Pressure Compensation 0.740 to 3.000 bar
555 to 2250 mmHg
10.73 to 43.51 PSI
(Manual setting and automatic correction)
Set-point and Control Function
Function Switchable Off
Limit Control
P/PI Control (Pulse length / Pulse
frequency)
Integral Action Time (IAT) 0.0 to 999.9 minutes
Adjustable period with pulse length
controller
0.5 to 20 seconds
Adjustable period with pulse
frequency controller
60 to 120 pulses/min
Pickup / Dropout delay 0 to 2000 seconds
Wash cycle 0.1 to 200.0 hours
Wash duration 1 to 2000 seconds
Switching DO hysteresis 0.1 to 1.0 mg/l or 1.0 to 10.0 %
Contact outputs, controller 1 SPDT, 3 SPST relays
Switching voltage max. 250 VAC
Switching current max. 3A
Switching power max. 600 VA
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