BL7917-2 ORP Controller with Pump
BL7917-2 ORP Controller with Pump
THB 39,100.00 * Prices plus VAT plus shipping costs
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Product information "BL7917-2 ORP Controller with Pump"

ORP controller and dosing pumps in one compact unit.

  • ±5 mV accuracy with unbeatable performance.
  • Isolated 4 to 20 mA recorder output.
  • Proportional dosing slows the pump down when the measured ORP level approaches the set value, to avoid over dosage of oxidizing or reducing agents.
  • Alarm contact is activated whenever the ORP reading varies more than 200 mV from the set point.
  • Auxiliary contacts allow users to attach a mixer or priming pump that is activated only when the pump is dosing
  • PVDF, FPM/FKM and PTFE materials are used for all parts that come into contact with liquid.


The controller/pump is enclosed in a modular housing for maximum protection. The pump utilizes a one-piece polypropylene, injection-molded housing. Since there are no joints or screws holding different sections of the housing together, the case is extremely rugged and sturdy. This series of instruments will mount easily in your plant using a minimum of wall space. The controls and pump head are located in the front to allow easy access.


Order Information:
BL 7917-2 is supplied with discharge and suction valves, polyethylene tubing, 230V power cable and instructions.

Product Manuals

  Manual: Download

Specification :

Range   -999 mV to +999 mV
Resolution   1 mV
Accuracy   ±5 mV
Flow Rate   13.3, 11.7, 10.1, 9.0, 7.8 (LPH)
Input Impedance   1012 Ohm
Dosage   proportional, oxidizing or reducing, user selectable
Recorder Output   4-20 mA (isolated)
Dosing Contact   1 isolated contact, 2A, Max. 240V, resistive load, 1,000,000 strokes
Alarm Contact   1 isolated contact, 2A, Max. 240V, resistive load, 1,000,000 strokes
Power Supply   BL 7917-1: 115V ±15%; 50/60Hz (40W)
BL 7917-2: 230V ±15%; 50/60Hz (40W)
Environment   0 to 50°C (32 to 122°F); RH max 95% non-condensing
Dimensions   221 x 142 x 181 mm (8.7 x 5.6 x 7.1')
Weight   5 kg (11 lb.)

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