Hanna Instruments BL122 - Specifications; Technical Specifications of BL120, BL121 & BL122, BL123

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SPECIFICATIONS
4. SPECIFICATIONS
4.1. COMPARISON TABLE FOR BL12X SWIMMING POOL CONTROLLERS
pH measurement ORP measurement Acid dosing pump Chlorine dosing pump Analog outputs Hanna Cloud connectivity
BL120
   
BL121
    
BL122
    
BL123
     
4.2. TECHNICAL SPECIFICATIONS OF BL120, BL121 & BL122, BL123
Range
0.00 to 14.00 pH
±2000 mV
-5.0 to 105.0 ºC (23.0 to 221.0 °F)*
Resolution
0.01 pH
1 mV
0.1 °C (0.1 ºF)
Accuracy
@25 °C / 77 °F
±0.05 pH
±5 mV
±1.0 ºC (±1.8 ºF)
Calibration
• pH buffer calibration: automatic, two points (4.01, 7.01, 10.01 pH)
• pH process calibration: adjustable, single point
• ORP (mV) calibration: adjustable, single point
Temperature compensation • Automatic -5.0 to 105.0 ºC (23.0 to 221.0 ºF) for pH
pH Controller
• Proportional feed using adjustable set point and adjustable proportional band
• Delay to start at power-on
• Overdosing protection using overfeed safety timer
ORP Controller
• Proportional feed using adjustable set point and adjustable proportional band
• Delay to start at power-on
• Overdosing protection using overfeed safety timer
• pH regulator interlocked
Alarms
• High and Low with enable / disable option for all parameters
• Alarm is triggered after five consecutive readings over / under threshold
*The range (pH & temperature) may be limited by the probe’s limits.