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pH Controller and Dosing Pump - BL100

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for Swimming Pools, Hot Tubs, and Spas

BL100 pH Controller and Dosing Pump is a system engineered for maintaining the pH of swimming pools, hot tubs, and spas. Typically chlorine, whether liquid or solid, is alkaline and will raise the pH of the water that it is added to. As the pH increases above pH 7.4, a form of chlorine known as hypochlorite ion (OCl–) increases. This form of chlorine is 100 time less effective at killing bacteria as compared to the other form of chlorine known as hypochlorous acid (HOCl). For this reason it is important to maintain the correct pH level in order to ensure that the more powerful hypochlorous acid form is available for disinfection. The BL100 was developed to be an inexpensive solution for the consumer to maintain the ideal pH at all times. Simply insert the probe and injection valve in-line with the recirculation pump and provide the chemical to be dosed.

The BL100 is available in multiple configurations including a meter and probe option, a kit for in-line mounting, and a complete package that includes bypass loop and panel mounted flow cell. The kit for in-line and flow cell models include aspiration tubing with filter and dispensing tubing with an injection valve.

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peristaltic pump

Peristaltic Dosing Pump
The BL100 has a powerful built-in peristaltic chemical feed pump that utilizes a stepper motor which does not have any gears or brushes to wear out. This design provides for a long life and little maintenance.

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. For example, a controller is programmed to have a set point of

 pH 7.40 with a 1.00 pH unit proportional band and the flow rate at 1.0 L/h. Any reading above pH 8.4 will cause the dosing of acid to be at 1 L/h. If the reading is at pH 7.90, which is 1/2 of the band, then the dosing pump will run at half speed or deliver 0.5 L/h of chemical. The closer the reading is to the set point the longer it takes for the pump to complete one rotation. This allows for very fine control of the pH value desired.

Programmable Alarm System

Hanna controllers allow users to enable or disable the low and high level alarms for pH. 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.

Quick Connect Probe Input
The Quick Connect DIN connector creates a waterproof seal with the meter making it ideal for reducing electrical noise issues with the connection caused by humid environments.

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
The BL100 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.

Multicolored LCD Display
The BL100 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 light green; while in an alarm state the display flashes red.

Specification NameDetail
SKUBL100
pH Range0.00 to 14.00 pH
pH Resolution0.01 pH
pH Accuracy (@25°C/77°F)±0.10 pH
Temperature Range-5.0 to 105°C (23.0 to 221.0°F)
Temperature Resolution0.1°C (0.1°F)
Temperature Accuracy (@25°C/77°F)±0.5°C (±0.9°F)
Temperature Compensationautomatic
Calibrationuser calibration: automatic, one or two-point with buffer solution (4.01, 7.01, 10.01 pH)
Process calibration: single point, adjustable (± 0.50 pH around measured pH)
Pump Controlselectable flow rate (0.5 to 3.5 L / hour; 0.13 to 0.92 G/hour)
manual control for pump priming
Alarmshigh and low with enable / disable option
triggered after 5 sec. if controller records a set of consecutive readings over / under threshold values level with enable / disable option
overtime protection (1 to 180 min. or off)
intuitive alarm system using red, light green, and green color-coded backlight
External Event Inputinput for level controller or flow switch to disable dosing pump in the event of no chemical when using a level controller or no flow when using a flow switch – galvanically isolated
Alarm Relay OutputSPDT 2.5A / 230 VAC
Power Supply100—240 VAC, 50/60 Hz
Power Consumption15 VA
Casingwall mounted, built-in pump, IP65 rated
Environment0-50°C (32-122°F), max. 95% RH non-condensing
Dimensions90 x 142 x 80 mm (3.5 x 5.6 x 1.8”)
Weight910 g (32 oz.)
Ordering InformationBL100-00 is supplied with HI10053 pH/temperature probe, 4.01 pH buffer solution, 20 mL (3), 7.01 pH buffer solution, 20 mL (3), power connection cable, instruction manual and quality certificates for instrument and probe.
BL100-10 (with in-line mounting kit) is supplied with BL100 controller, HI10053 pH/temperature probe, pool controller aspiration filter, pool controller injector, 1/2” thread, saddle for Ø 50 mm pipe (2), aspiration PVC tube (flexible) (5 m), dispensing PE injection tube (rigid) (5 m), valves (2), 4.01 pH buffer solution, 20 mL (3), 7.01 pH buffer solution, 20 mL (3), power connection cable, instruction manual and quality certificates for instrument and probe.
BL100-20 (with flow-cell mounting kit) is supplied with BL100 controller, HI10053 pH/temperature probe, flow cell for BL100/BL101, mounting panel assembly for BL100/BL101, pool controller aspiration filter, pool controller injector, 1/2” thread, saddle for Ø 50 mm pipe (3), aspiration PVC tube (flexible) (5 m), dispensing PE injection tube (rigid) (15 m), tubing adapter 1/2” – 6 mm with racord (2), valves (2), 4.01 pH buffer solution, 20 mL (3), 7.01 pH buffer solution, 20 mL (3), power connection cable, instruction manual and quality certificates for instrument and probe.
Recommended ProbeHI10053 digital pH/temperature probe with quick connect DIN connector – galvanically isolated

Additional Informations

Additional information

Industry

Parameter

Mounting kit

Flow-cell mounting kit, In-line mounting kit, w/o injection valves, fittings and tubing

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