Parameters Setup Overview - Hanna Instruments BL120 Instruction Manual

Parameter
Controller Password
Controller ID
Hold Input*
Events Timeout
*Feature has to be enabled in Setup and an optional in-line flow sensor has to be attached to the controller HOLD input (see
digital input connections in WIRING section).
When the recirculation pump doesn't work, the flow sensor output should be open to trigger the HOLD mode (inactivates the
dosing pumps).

7.3. PARAMETERS SETUP OVERVIEW

Note: The analog outputs – AO1, AO2, AO3 – are only available for
pH
Parameter
Dosing Type
Set Point
Proportional Band
pH Flow Rate
Overtime
Alarm High
26
Range / Options Default settings Description
Enable Disabled

Disable

0 to 9999 / 1 1234
Enable Disabled

Disable

0 to 60 min / 1 min 0 min.
30 min
8.0 pH
6.0 pH
Disabled
Range / Options
Acid / Base
6.00 to 8.00 pH / 0.01pH 7.2 pH
0.1 to 2.0 pH / 0.1 pH
0.5 to 3.5 l/h / 0.1 l/h
1 to 120 min / 1min
(pH Low+0.1) to 14.0 pH
Acid / 0.1 pH
Protects against unauthorized use
Identifies the controller
Enables or disables HOLD input for the recirculation
pump
This timer delays inactivating the pumps "control
function" for this time period after an Alarm condition
is triggered. (The pumps stay on during this time).
900 mV
200 mV
5 min
Disabled
BL121 & BL123.
Default settings Description
Switch between options, depending on the tank
Acid
content
Used to set required pH level
When the acid pump is activated, the pump LED flashes
pH regulated time proportional band. Proportions
on/off time within the band.
2.0 pH
The pump is ON continuously at the set point value
with added band
2.2 L/h pH dosing pump flow rate
30 min Maximum allowed dosing time in automatic mode
Minimum pH value that triggers the alarm high if
continuous for more than 5 seconds*
8.0 pH
Status and service LEDs are active and acid pump
is disabled
°C
Disabled
105.0°C
-5.0°C