Hanna Instruments BL120 User Manual

27
SETUP
Parameter Range / Options Default settings Description
Alarm High
 Enable
 Disable
Disabled Enables / Disables the pH high alarm
Alarm Low
0.0 to (pH High-0.1) pH
Acid / 0.1 pH
6.0 pH
Maximum pH value that triggers the low alarm if
continuous for more than 5 seconds**
Status and service LEDs are active and acid pump is
disabled
Alarm Low
 Enable
 Disable
Disabled Enables / Disables the pH low alarm
Warnings and Errors
 Enable
 Disable
Disabled
Enables / Disables warnings and errors related to
pH events
Alarm Activates Relay
 Enable
 Disable
Disabled Enables / Disables the relay control for pH events
Startup Dosing Delay 1 to 180 min / 1 min 2 min The delay to start dosing at power-on
Analog Out
(BL121 & BL123)
Disabled, AO1, AO2, AO3 Disabled Assigns an analog output to pH reading
Max. Analog Out
(BL121 & BL123)
1 to 14 pH / 1 pH 14 pH High pH limit assigned to 20 mA
Min. Analog Out
(BL121 & BL123)
0 to 13 pH / 1 pH 0 pH Low pH limit assigned to 4 mA
Acid Tank Input
 Enable
 Disable
Disabled Enables / Disables the low level input in acid tank
* The minimum adjustable value for alarm high is related to the value assigned to alarm low (if enabled).
** The maximum adjustable value of alarm low is related to the value assigned to alarm high (if enabled).
ORP
Parameter Range / Options Default settings Description
Set Point 200 to 900 mV / 1 mV 700 mV Use to set the expected ORP level in pool
Proportional Band 10 to 200 mV / 1 mV 100 mV
ORP regulated time proportional band, proportions
on/off time within the band
The pump is on continuously at the set point value
with added band
Cl
2
Flow Rate 0.5 to 3.5 l/h / 0.1 L/h 2.2 L/h ORP dosing pump flow rate
Overtime 1 to 120 min / 1 min 30 min Maximum allowed dosing time in continuous mode
Alarm High
(Low+1) to 1000 mV /
1 mV
900 mV
Minimum ORP value that triggers the alarm high if
continuous for more than 5 seconds*
Status and service LEDs are active and Cl
2
pump is
disabled
Alarm High
 Enable
 Disable
Disabled Enables / Disables the ORP high alarm
Alarm Low 0 to (High-1) mV / 1 mV 200 mV
Maximum ORP value that triggers the alarm low if
continuous for more than 5 seconds**
Status and service LEDs are active and Cl
2
pump is
disabled

Hanna Instruments BL120 Specifications

General

Brand	Hanna Instruments
Model	BL120
Category	Controller
Language	English