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Wall Mounted pH Controller and Pump Hanna Instruments BL7916

Product Information

Manufacturer: Hanna Instruments
Model: BL7916
Warranty: 12 months

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Categories: pH Meter, Water Quality Tester

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Contact Ho Chi Minh City

Tel: (028).3977.8269 / 0906.988.447

Email: sales@lidinco.com

Contact Bac Ninh, Ha Noi City

Tel: (0222).730.0180

Email: bn@lidinco.com

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Description
Documents

The BL7916 combines a pH meter with a chemical dosing pump in order to maintain a desired set point in process applications.
Two advanced instruments in one compact unit.
Convenient installation with all controls on front panel.
Widely used in plating, wastewater treatment, water treatment and swimming pools.
Easy Installation
Designed with mounting holes built into a rugged base, BL7916 is simple to install. All of the controls and pump assemblies are conveniently located on the front of the unit.
Proportional Dosing
A proportional control slows down the stroke rate as the measured value approaches the user selectable set points, avoiding overdosage of chemicals. This feature makes the pump’s dosing more accurate, saves chemicals and eliminates unnecessary and costly corrections to your process, especially with slow reacting chemicals.
Rugged Construction
BL7916 is housed in rugged, fiber-reinforced polypropylene IP55 rated casings to protect from hazardous spills and splashes. PVDF, FPM/FKM and PTFE materials are used for all parts that come into contact with liquid to resist corrosion caused by chemicals.
Isolated Recorder Output
To enhance troubleshooting and the ability to record data while monitoring, simply attach a recording device to the instrument’s 4 to 20 mA output contacts, conveniently located on the front panel, to obtain a copy of the results on demand.
Simple Pump Action
A positive displacement solenoid with few moving parts makes the BL7916 more reliable than motor driven pumps since there is no rotating parts, gears or cams; drastically reducing any chance of mechanical failure.
Auxiliary Dosing Contacts
Allows the user to attach a mixer or priming pump that is activated only when the pump is dosing.

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Thông số kỹ thuật

pH Range	0.00 to 14.00 pH
pH Resolution	0.01 pH
pH Accuracy	±0.01 pH
pH-mV Range	0.00 to 14.00 pH
pH-mV Resolution	0.01 pH
pH Calibration	manual 1 or 2 point
pH Temperature Compensation	fixed by resistor; 2-wire pt100 optional
pH Input impedence	10¹² Ohm
pH Dosing Relay	proportional, acid or base, user selectable
pH Dosing Set Point	manual adjustment through coarse/fine trimmers
pH Proportional Band	fixed 1.5 pH unit band; adjustable by changing resistor
Level Dosing Relay	dosing pump operated by consent feature through level input connection
Dosing Control	proportional, acid or base, user selectable
Dosing Terminals	Isolated, 2A, Max. 240V, resistive load, 1,000,000 strokes
Alarm Relay Set Point	fixed; based on pH setpoint
Alarm Relay Range	activated when pH is outside 2 pH units from setpoint
Analog Ouput Signal	4-20 mA (isolated)
Over Current Protection	250V fuse
Self Priming	maximum self-priming height is 1.5 m (5 ft.).
Analog Output	4 to 20 mA (isolated)
Display	segmented LCD
Power Supply	230V ±15%; 50/60Hz (40W)
Environment	0 to 50°C (32 to 122°F); RH max 95% non-condensing
IP Rating	IP55
Dimensions	221 x 142 x 181 mm (8.7 x 5.6 x 7.1”)
Weight	Approximately 5 kg (11 lb.)
Ordering Information	BL7916 is supplied with polyethylene tubing, foot valve, injection valve, power cable and instructions.