Global Water 800-876-1172 • globalw.com Global Water Instrumentation, Inc.
Global Water 800-876-1172 • globalw.com Global Water’s Conductivity Controllers are high performance digital indicating, dual set point, ON/OFF controllers for conductivity, that use a temperature compensated conductivity probe. The Conductivity Controllers have a K=1.0 cell constant conductivity probe with a front panel cell adjustment potentiometer. The conductivity controller features an analog voltage output of 1 mV/LSD for recorders, printers, computer interfacing peripherals, etc.
Global Water 800-876-1172 • globalw.com I) Inspection a) Your 3101 Conductivity Controller unit was carefully inspected and certified by our Quality Assurance Team before shipping. If any damage has occurred during shipping, please notify Global Water Instrumentation, Inc. and file a claim with the carrier involved.
Global Water 800-876-1172 • globalw.com III) Mounting Procedure a) Make a cutout on any panel, with a thickness of 1/16 in. (1.5mm) to 3/8 in. (9.5 mm). Refer to Drawing 1. b) Remove the mounting brackets assembly from the panel meter and insert the panel meter into the cutout. Refer to Drawing 2.
Global Water 800-876-1172 • globalw.com c) Replace the mounting brackets assembly onto the panel meter and fasten the mounting screws to secure the panel meter to the mounting panel. Refer to Drawing 3. IV) Rear Panel Connection Diagram Refer to Drawing 4 (page 6.) a) Connect the AC power leads to the terminal strip on the rear of the instrument. The model 3101 can be used with 115 VAC or230VAC, 50/60 Hz. b) Connect the two conductivity cell leads from the Cat. No.
Global Water 800-876-1172 • globalw.com VI) Measurement range select a) Loosen the one earth ground screw on the rear of the instrument. Refer to Drawing 4. Loosen the screw on the front panel. Refer to Drawing 5 (page 7.) b) Push the rear panel toward the front of the instrument to expose the internal DIP switch .Set the DIP switch according to Table 1 for the desired measure and control range. c) Push the front panel back into the metal case and tighten the screw on the front panel.
Global Water 800-876-1172 • globalw.com Dip switch position 1 2 3 0 1 0 0 0 1 0 0 1 1 0 1 4 0 0 0 1 5 1 1 0 0 6 0 0 1 0 7 1 1 1 0 8 0 1 0 0 Table 1 9 0 0 1 0 VII) Analog Voltage Output a) The analog voltage output can be used to interface with other instrument, such as recorder, printer, computer-interfacing peripherals, etc. Output voltage: 1 mV per LSD, least significant digit. 0 mV for 000 display, regardless of the position of the decimal point.
Global Water 800-876-1172 • globalw.com VIII) Controller Set a) Press the HI(LO) set switch on the front panel. Refer to Drawing 5 (Page 7.) The instrument will indicate the conductivity value of the set point. b) Adjust the HI(LO) set control on the front panel for the desired set point conductivity value. c) Release the HI(LO) set switch, the meter will again indicates the measured conductivity value.
Global Water 800-876-1172 • globalw.com XI) Temperature compensation a) The instrument is calibrated to a temperature coefficient of 2% per degree C over the measurement temperature range of 5 to 55°C. Temperature compensation refers all measure values to 25°C. XII) Temperature compensation thermistor a) External resistive can be used to perform temp. compensation, when conductivity probes other than the Cat. No. 105 probe is used. Refer to following table.
Global Water 800-876-1172 • globalw.com XIII) Cell constant a) The model 3101 is designed for use with conductivity probes of 1.0 cell constant. XIV) Calibration using standard solutions a) Rinse the conductivity probe with de-ionized water or the standard solution. b) Immerse the conductivity probe in the standard solution .Choose the standard solution closet to the value of the sample solution .Refer to table 2.
Global Water 800-876-1172 • globalw.com c) Immerse the conductivity probe in the sample to be measured .The instrument will indicate the conductivity value of the sample recorder referred to 25°C. XVII) Trouble Shooting Other issues a) Call us for tech support: 800-876-1172 or 916-638-3429 (many problems can be solved over the phone). Fax: 916-638-3270 or Email: globalw@globalw.com.