Discount Hanna Instruments HI9935-1 Industrial Grade pH and TDS Controller with Proportional Control of Fertilization, 0 to 14pH, 115VAC

Hanna Instruments HI9935-1 Industrial Grade pH and TDS Controller with Proportional Control of Fertilization, 0 to 14pH, 115VAC

Additional product information Hanna Instruments HI9935-1 Industrial Grade pH and TDS Controller with Proportional Control of Fertilization, 0 to 14pH, 115VAC Features It's a pH and TDS controller for fertilizer solution dosage in hydroponics Measures pH from 0 to 14 and TDS from 0 to 1999 mg/L (ppm) Relays are activated when the pH exceeds the set point or TDS falls below the desired value Independent proportional settings for pH and TDS can be adjusted from 0 to 90 seconds, 0 to 2.0 for pH and 0 to 400 mg/L (ppm) for TDS Measures 8-11/16" length by 3-25/64" width by 7-3/32" height Today Price: Check current price

Product Description
HI 9935 is supplied complete with instructions. HI 9935 is a pH and TDS controller for fertilizer solution dosage in hydroponics. HI 9935 measures pH from 0 to 14 and TDS from 0 to 1999 milligrams per liter (ppm). Two separate set points can be adjusted from 4 to 7 pH and 900 to 1800 ppm ( milligrams per liter). The relays are activated when the pH exceeds the set point or TDS falls below the desired value. Two pumps or electrovalves can be wired directly to the controller and be powered through the terminals. Independent proportional settings for pH and TDS can be adjusted from 0 to 90 seconds, 0 to 2.0 for pH and 0 to 400 milligrams per liter (ppm) for TDS. A matching pin/ground probe can be connected to the appropriate terminals to extend electrode life and eliminate interference. HI 9935 provides for an alarm relay which is activated in several circumstances. These include when the pH is below the set points in the operator adjustable threshold of 0.5 to 2.5 pH, or similarly, TDS exceeding the set point by a value in the 50 to 450 milligrams per liter (ppm) range. The alarm also goes off if the pH and/or TDS are not corrected within the operator determined time frame of 1 to 10 minutes. Moreover, the alarm configuration is switchable from a normally-closed to a normally-open state or turned off during maintenance. The fertilization status can be ascertained from a distance through dosage and alarm LED's. HI 9935 accepts pH electrodes with a BNC connector and TDS probes with a DIN connector. Range: 0.00 to 14.00 pH, 0 to 1999 ppm ( milligrams per liter) TDS. Resolution: 0.01 pH, 1 ppm ( milligrams per liter) TDS. Accuracy at 20 degree C: +/-0.02 pH, +/-2 percent FS TDS. Input impedance: 10(12) Ohm. Setpoint: from 4.0 to 7.0 pH and 900 to 1800 ppm ( milligrams per liter). TDS Conversion factor: 0.65 milligrams per liter (ppm) = 1 microsecond per centimeter. Temperature compensation: automatic, 0 to 50 degree C with Bita = 2 percent/degree C. see details

Hanna Instruments HI9935-1 Industrial Grade pH and TDS Controller with Proportional Control of Fertilization, 0 to 14pH, 115VAC Hanna Instruments.

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Features

• It's a pH and TDS controller for fertilizer solution dosage in hydroponics
• Measures pH from 0 to 14 and TDS from 0 to 1999 mg/L (ppm)
• Relays are activated when the pH exceeds the set point or TDS falls below the desired value
• Independent proportional settings for pH and TDS can be adjusted from 0 to 90 seconds, 0 to 2.0 for pH and 0 to 400 mg/L (ppm) for TDS
• Measures 8-11/16" length by 3-25/64" width by 7-3/32" height

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