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pH Specifications
pH Range 0.00 to 14.00 pH
pH Resolution 0.01 pH
pH Accuracy ±0.05 pH
pH Calibration pH buffer calibration: automatic, two-point (4.01, 7.01, 10.01 pH)
pH process calibration: one-point, manual input
Temperature Compensation automatic, -5.0 to 105.0ºC (23.0 to 221.0ºF) for pH
ORP Specifications
ORP Range ±2000 mV
ORP Resolution 1 mV
ORP Accuracy ±5 mV
ORP Calibration ORP (mV) calibration: one-point, manual input
Temperature Specifications
Temperature Range -5.0 to 105.0ºC (23.0 to 221.0°F)
Temperature Resolution 0.1°C (0.1ºF)
Temperature Accuracy ±1ºC (±1.8ºF)
Specifications
pH Dosing proportional with adjustable set point and proportional band
delay to start at power-on and overdosing protection
ORP Dosing proportional with adjustable set point and proportional band
delay to start at power-on and overdosing protection
pH dosing interlocked
Alarms high and low with enable/disable option for all parameters
alarm is triggered when 5 consecutive readings are over/under threshold
Alarm System intuitive alert system based on LEDs
alarm filtering options
alarm relay control based on user setup
Alarm Relay Output (1) SPDT 5A/230 VAC
activated by pH/ORP/temperature selectable alarm conditions
Analog Outputs (3) 4 to 20 mA, sourcing, configurable
output impedance ≤ 500 Ohm
accuracy < 0.5 % FS
galvanically isolated up to 50 V relative to earth ground
Auxiliary Inputs (3) low level in acid/base tank (contact open)
low level in chlorine tank (contact open)
hold input (contact open)
Pump Control automatic and manual modes
adjustable flow rate from 0.5 to 3.5 L/h
Log Feature automatic logging of pH, ORP, and temperature measurements, GLP and events including alarms, errors and power failure
capacity for 60 days with 10 second sampling interval
all data .csv files are transferred by USB flash drive
Password Protection setup, calibration and log recall options features are password protected
Storage Interface USB
GLP calibration information including date and time for pH and ORP sensors
Digital Probe Input (1) galvanic isolated digital input HI1036-1802 pH/ORP/temperature/matching pin combined probe with DIN waterproof connector
Power Supply 100 - 240 VAC
Power Consumption 10 VA
Environment 0 to 50 ºC (32-122 ºF); max 95% RH non-condensing
Dimensions 245 x 188 x 55 mm (73 mm with pumps);
9.6 x 7.4 x 2.2” (2.9” with pumps)
Weight 1700 g (60 oz)
Ordering Information BL121-10: Swimming Pool & Spa Controller with HI1036-1802 combined pH/ORP/temperature digital electrode, with probe fittings and chemical injectors
BL121-20: Swimming Pool & Spa Controller with panel mounted flow cell, HI1036-1802 combined pH/ORP/temperature digital electrode, with probe fittings and chemical injectors
