HANNA BL121 pH/ORP Swimming Pool Special Controller
pH: 0.00 to 14.00 pH, pH resolution: 0.01 pH, pH Accuracy @25 ℃/77 ° F: +/- 0.05 pH, ORP range: +/- 2000 mV, resolution 1 mV, multiparameter digital HI1036-1802 probe for maintaining water quality in swimming pools, hot baths, hot springs.
HANNA
BL121
BL121-10
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Introduction
The BL121 swimming pool controller is a complete system designed to maintain sanitized water quality in swimming pools, hot tubs and spas. The BL121 is available in two configurations. The basic model is in-line, allowing the probe and chemical injection fittings to be installed directly into existing pipes. Panel mount version with bypass flow sensor is also available. The bypass flow sensor allows the probe to be calibrated and maintained without having to shut down the recirculation pump.
Multi-parameter digital HI1036-1802 probe containing pH, ORP and temperature sensors and matching pins. All readings are taken within the probe and the data is transmitted to the controller via a digital connection. Both digital connections and matching pins provide stable, reliable measurements. Without these two components, electrical noise from the recirculation pump and ground loop can interfere, causing erratic readings and premature probe failure.
Built-in peristaltic chemical feed pump, proportionally controlled with adjustable flow rate. One of the pumps is used to meter acid and the other is used to meter chlorine. The effectiveness of available chlorine, measured by ORP, is inversely proportional to the pH of the water. A pool with a fixed chlorine concentration will show a decrease in ORP as the pH of the water increases.
The BL121 incorporates a dose consent feature that does not dose chlorine until the pH is first calibrated, as it is possible to have a low ORP value even if there is sufficient chlorine. The dose consent feature will prevent chemical waste and higher than desired chlorine concentration levels. For compliance monitoring, the BL121 has a built-in data logger. Measurement readings are recorded every 10 seconds, with a new recording starting every new day or when the instrument is calibrated. Data logged includes pH, ORP and temperature values, last calibration data, setup configuration and any event data.
Additional features include LED indicators for dose, meter status and service, real-time graphic display, programmable alarms and password protection. The BL121 is an all-in-one solution for automatically controlling pH and chlorine levels in swimming pools, hot tubs and spa water.
Features
Used to maintain the disinfection water quality of swimming pools, hot baths and hot springs.
Circulation pump monitoring.
Display multiple parameters simultaneously.
Customizable alarm reminder system.
Peristaltic pump dosing system.
HANNA BL121 pH/ORP swimming pool dedicated controllerSpecifications
| LIST | VALUE |
|---|---|
| Range-pH | 0.00 to 14.00 pH |
| Resolution -pH | 0.01 pH |
| Accuracy @25 ℃/77 ° F-pH | ±0.05 pH |
| Calibrated -pH | Acidity measurement calibrate: Manual calibration acidity pH buffer calibrate: two points automatic identification calibrate, built-in standard points: 4.01, 7.01, 10.01 pH |
| Resolution -ORP | 1 mV |
| ' '25oC/77oF-ORP' | ± 5 mV |
| Calibrate | Manual calibration |
| Accuracy - temperature | ±1℃（±1.8ºF） |
| Temperature compensation | Automatic temperature compensation -5.0 to 105.0 ℃ (23.0 to 221.0 ° F) |
| Pump Control | Automatic and manual modes; Flow rate adjustable from 0.5 to 3.5 L/h |
| recording function | All data.csv files are transferred via USB flash drive to automatically record pH, ORP and temperature measurements, GLP and events including alarms, errors and power failures, store data for 60 days, Data Logging interval of 10 seconds |
| alert | Triggered when 5 consecutive readings exceed/fall below the set value |
| password protection | Settings, calibrate and log call option features are all password protected by user settings |
| connect | USB |
| GLP | Automatic recording of acidity pH/oxidation reduction ORP electrode calibrated, date and time information |
| alert output | SPDT 5A/230 VAC activated by pH/ORP/temperature optional alarm conditions |
| analog output | 4 to 20 mA output configuration; Output Impedance ≤ 500 ohms Accuracy < 0.5% FS, up to 50 V relative to isolation current |
| auxiliary input | Low level in acid/alkali tanks (open contact) Low level in chlorine tanks (touchpoint open); hold input (touchpoint open) |
| Electrode | Composite electrode HI1036-1802 |
| Power | AC100-240V |
| Power | 10VA |
| Applicable environment | 0-50°C |
| Size/Weight | 245 x 188 x 55 mm(73 mm) 1700 g (60 oz) |
HANNA BL121 pH/ORP swimming pool dedicated controller Packing list
machine X1, manual X1, certificate X1, warranty card X1
[Note] Because the manufacturer's packaging may be updated or upgraded, the detailed packaging list shall be subject to the latest standard configuration of the manufacturer.