Controllers & Transmitters
BL7916-2 pH Controller and Pump
BL7916-2 pH Controller and Pump

 

BL7916-2 pH Controller and Pump

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Mô tả

The BL7916 combines a pH meter with a chemical dosing pump in order to maintain a desired set point in process applications.

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.

pH

pH Range 0.00 to 14.00 pH
pH Resolution 0.01 pH
pH Accuracy ±0.01 pH
pH Calibration offset: ±1 pH with trimmer; slope: 85 to 115% with trimmer
pH Temperature Compensation fixed temperature compensation of 25°C (77°F)
pH Input impedence High Impedance 10¹² Ohm

Process Control Meter

Alarm Relay Set Point 1 isolated, 2A, max. 240V, resistive load, 1,000,000 strokes
Dosing Control proportional, acid or base, user selectable
Analog Ouput Signal 4-20 mA (isolated)
Dosing Terminals 1 isolated, 2A, max. 240V, resistive load, 1,000,000 strokes
Over Current Protection 250V fuse
Display 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 5 kg (11 lb.
Ordering Information BL7916-2 is supplied with 7 m (23') LPDE suction valves, polyethylene discharge tubing, 230V power cable and instructions.



 











 

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