Hanna Instruments Australia
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Sales: (03) 9769 0666   |    Mon to Fri: 8:30am – 5:00pm
Hanna Instruments Australia
Sales: (03) 9769 0666   |    Mon to Fri: 8:30am – 5:00pm

Pool Line ORP Controller and Dosing Pump - BL101-Meter, probe and in-line mounting kit

$1,004.52

Engineered to be an inexpensive solution for homeowner and maintenance companies to maintain the ideal ORP at all times of a swimming pool or hot tub. The BL101 Pool Line ORP Controller and Dosing Pump is a complete solution with both a process controller and a chemical dosing pump. Simply insert the probe and injection valve in-line with the re-circulation pump and supply the oxidizer (i.e. chlorine) to be dosed.

  • All in one solution for maintaining the proper ORP value
  • Industrial process probe with 1/2″ NPT threads for insertion into re-circulation line
  • Input for level controller or flow switch

BL101 ORP Controller and Dosing Pump is a system engineered for maintaining the ORP of swimming pools, hot tubs, and spas. Typically liquid chlorine is used as a disinfectant to keep the water safe from harmful bacteria. Chlorine, as an oxidizer, will increase the oxidation- reduction potential (ORP) of water when it is added to it. When the ORP value is greater than 650mV then bacteria that are present will be killed within seconds. The BL101 was developed to be an inexpensive solution for the consumer to maintain the ideal ORP value at all times. Simply insert the probe and injection valve in-line with the re-circulation pump and provide the chemical to be dosed.

Multi-color LCD

The BL101 features a multi-colored LCD that provides for a quick way to see the status of the pool controller. If in control mode and operating as intended the display will be green. If control is not enabled then the display will be yellow while in an alarm state the display flashes red.

Intuitive LCD

Both ORP (mV) and temperature are displayed with status icons that show when the pump is dosing and the control mode status.

Programmable Alarm System

Hanna controllers allow users to enable or disable the low and high level alarms for ORP. When an alarm is activated, all dosing will stop. For added safety, the alarm system also offers overdosing protection in that if the set point value is not corrected within a programmed time interval then the meter will go into alarm status.

On-Screen Features

flow rate

Adjustable Flow Rate
The flow rate from the dosing pumps is adjustable from 0.5 to 3.5L/h. Larger bodies of water require more chemical to be dosed than smaller ones in per unit of time. The adjustable flow rate, like the proportional band, allows for better control in maintaining a desired set point .

Automatic Proportional Pump Control

Automatic Proportional Pump Control
The peristaltic dosing pump can be controlled by simple on/off or more advanced proportional control which helps prevents overshooting of the set point. When using proportional control the flow rate that is programmed, will be impacted by the proportional band used. The closer the reading is to the set point the longer it takes for the peristaltic pump to complete one revolution. If the reading is outside the proportional band then the amount of time it takes to complete one revolution is based on the flow rate programmed.

 Acid Tank Level/Flow Switch Input

Oxidation Chemical Tank Level/Flow Switch Input
The BL101 allows for a connection to an optional level controller or flow switch. This input can be used to disable the dosing pump when there is no chemical left in the reservoir tank or there is no flow due to the pump being turned off.

Built-in Dosing Pump

Pooline ORP Peristaltic Pump

Peristaltic Dosing Pump

The BL101 features a peristaltic dosing pump that is superior to diaphragm versions due to the ability to self-prime when there is no liquid in the uptake line. The loss of prime can be problematic with a diaphragm pump due to the gassing of chlorine.

Brushless Motor

The brushless motor does not have any gears or brushes that can wear out. A brushless design provides for a long life and little maintenance. The compact stepper motor allows for very precision control over the dosing of the chemical.

Long-life Persitaltic Tubing

The industrial grade peristaltic tubing is chemical resistant and provides for a relatively long-life. As tubing stretches over time it can be easily replaced. No special tools required.

ORP electrode with flow cell

pH probe mounted in flow thorugh cell

Three Configuration Options

The BL101 is available in multiple configurations including a meter only, meter and probe, and
a complete package that includes bypass loop
and panel mounted flow through cell. All models include aspiration tubing with filter and dispensing tubing with injection valve.

HI10053 ORP/Temperature Probe

The BL101 uses the HI20083 amplified probe that incorporates both ORP and temperature sensors and connects to the controller with a single waterproof Quick Connect DIN connector.

NPT Threads for In-line and Tank Mounting

The ABS body of the probe has a 1/2” threaded fitting for insertion to an in-line “T” fitting or the flow cell. The back end part of the probe has 3/4” NPT threads for submersion/ tank mounting. The probe body has a hex fitting for tightening snuggly with a wrench. .

SKU BL101-10
Name Pool Line ORP Controller and Dosing Pump – BL101-Meter, probe and in-line mounting kit
mV Range -2000 to 2000 mV
mV Resolution 1 mV
mV Accuracy ±5 mV
mV (ORP) Calibration process calibration: single point, adjustable (± 50 mV around measured ORP value)
mV (ORP) Dosing Relay High or Low Mode Operation
High set point dosing is activated when reading is higher than set point
Low set point dosing is activated when reading is lower than set point (dose oxidizer)
mV (ORP) Dosing Set Point On/Off control using adjustable set point (200 to 900 mV)
mV (ORP) Proportional Band adjustable proportional band (10 to 200 mV)
mV (ORP) Hysteresis Band adjustable hysteresis (10-100 mV)
Temperature Range -5.0 to 105.0 °C (23.0 to 221.0 °F)
Temperature Resolution 0.1 °C (0.1 °F)
Temperature Accuracy ±0.5 °C (±0.9 °F)
Dosing Control proportional and on/off control
Alarm Relay Set Point triggered after 5 sec. if the controller records a set of consecutive readings over or under threshold values
Over Dosing Control overtime protection (1 to 180 m in. or Off)
Digital Input Signal external switches can be connected to hold the control due to external events (low reagent level, recirculation pump doesn’t work)
Power Consumption 15 VA
Enclosure wall mounted with built-in pump
Maximum Flow Rate selectable flow rate (0.5 to 3.5 L / hour; 0.13 to 0.96 g/hour)
manual control for pump priming
ORP Electrode HI20083 ORP/temperature probe with quick connect DIN connector (supplied)
Power Supply 100 – 240 Vac, 50/60 Hz
Environment 0 to 50 °C (32 to 122 °F), max. 95% RH non-condensing
IP Rating IP65
Dimensions 90 x 142 x 80 mm (3.5 x 5.6 x 1.8 in.)
Weight 910 g (32 oz)

BL101-00 is supplied with BL101 controller, HI20083 ORP/temperature probe, ORP test solution (3 pcs.), power connection cable, instruction manual and quality certificates for the instrument and electrode.
BL101-10 is supplied with BL101 controller, HI20083 ORP/temperature probe, 50 mm saddle for probe and chemical injector (2), aspiration filter (1), 1/2” threaded injection valve (1), flexible aspiration PVC tubing (5 m), rigid dispensing PE tubing (5), ORP test solution (3 pcs.), power connection cable, instruction manual and quality certificates for the instrument and electrode.
BL101-20 is supplied with BL101 controller, HI20083 ORP/temperature probe, panel mounted flow cell assembly, 50 mm saddle for probe and chemical injector (2), aspiration filter (1), 1/2” threaded injection valve (1), flexible aspiration PVC tubing (5 m), rigid dispensing PE tubing (15 m), tubing adapter 1/2” – 6 mm with racord (2), ORP test solution (3 pcs.), power connection cable, instruction manual and quality certificates for the instrument and electrode.

Pool Line ORP Controller and Dosing Pump – BL101-Meter, probe and in-line mounting kit

All prices are inclusive of GST and not all items are stock items, if you require an immediate solution please send an email to sales@hannainst.com.au or call us on (03) 9769 0666.


Free standard delivery:

We offer free delivery within Australia, typically arriving within 5 to 7 days. Delivery times may vary depending on the courier service and the recipient’s location.


Same-day express delivery:

Place your order before 1 PM Monday to Friday for the same-day express shipping. Delivery times may vary depending on the courier service and the recipient’s location.

Please note that we do not offer shipping to PO Box addresses.

All prices are inclusive of GST and not all items are stock items, if you require an immediate solution please send an email to sales@hannainst.com.au or call us on (03) 9769 0666.

Please note that we do not offer shipping to PO Box addresses.