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CONTROLLERS > WALL MOUNT

Industrial Catalog - 9073 HI9913 pH and Conductivity Controller

SPECIFICATIONS

Range 0.00 to 14.00 pH; 0.00 to 10.00 mS/cm Resolution 0.01 pH; 0.01 mS/cm Accuracy (@20°C/68°F) ±0.02 pH; ±2% F.S. Input Impedance 10
12 Ohm Power Supply Calibration 110/115 VAC ±10% or 220/240 VAC ±10%; 50/60 Hz manual, 2 point for pH and 2 point for EC, through trimmers on the front panel Setpoint Environment 2, selectable from 4.00 to 7.00 pH and from 0.00 to 6.00 mS/cm Temperature Compensation -10 to 50°C (14 to 122°F); RH max 95% non-condensing Dimensions (EC) automatic, 0 to 50°C (32 to 1226°F) with ß=2%/°C Proportional Control 221 x 181 x 86 mm (8.7 x 7.1 x 3.4’’) adjustable from 0.00 to 2.00 pH and from 0.00 to 2.00 mS/cm, time cycles from 0 to 90 seconds Alarm Relay Dosing Contact 1, activated when pH varies more than a selec- table value (0.5 to 2.5 pH) from setpoint or when max dosage time for pH (adjustable from 1 to 10 minutes)elapses; or when conductivity variesmore than a selectable value (0.5 to 2.5 mS/cm) from setpoint or when max dosage time for EC (adjustable from 1 to 10 minutes) elapses (iso- lated, Max 2A-240 V, resistive load, 1,000,000 strokes) Weight 2 powered terminals for pH and EC dosages (240V) Max. 2A, 1,000,000 strokes activated when pH > setpoint and when mS reading

HI 9913 measures pH from 0 to 14 and EC from 0 to 10 mS/cm. Two separate setpoints can beuser-adjusted from 4 to 7 pH and 0 to 6 mS/cm. The relays are activated when pH exceeds thesetpoint or conductivity falls below the desired value. Two pumps or electro-valves can bewired directly to the controller and be powered through the terminals. The operator can adjust two independent proportional settings for pH and conductivity. The time cycle is adjustablefrom 0 to 90 seconds, while the proportional band is 0 to 2 for both pH and EC. A groundprobe can be connected to the appropriate terminals to eliminate interference and prolong the pH electrodes’ life.HI 9913 provides for an alarm relay which is activated in several circumstances. These includewhen the pH is below the setpoint by the operator-adjustable threshold of 0.5 to 2.5 pH, or EC exceeds the setpoint by a value in the 0.5 to 2.5 mS/cm range. The alarm goes off if the pH and/or conductivity are not corrected within the operator-determined time frame of 1 to 10minutes. The alarm can be turned off during maintenance.HI 9913 accepts pH electrodes with a BNC and a conductivity probe with a DIN connector.HI 9913 compensates for the temperature effect on conductivity measurements automatically.

ORDERING INFORMATION: ACCESSORIES:

HI 9913 is supplied complete with instructions. HI 7004/1L pH 4.01 buffer solution, 1 L bottle HI 7007/1L pH 7.01 buffer solution, 1 L bottle a =1, 115 VAC power supply HI 7031L 1413 µS/cm calibration solution, 500 mL bottle a =2, 230 VAC power supply HI 7039L 5000 µS/cm calibration solution, 500 mL bottle

HI9913-a

HI 8427 pH/ORP electrode simulator HI 931001 pH/ORP electrode simulatorwith display
For a complete range of pHand EC electrodes, see pages 63-73

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