Vernier Tech Info Library TIL #1402

Conductivity Probe Detail Information

Conductivity Probe, order code CON-BTA, $93.00
Specifications and User Guide

TROUBLESHOOTING
-Primary Test: Place the toggle switch at the desired setting, run the data-collection program, and take a reading in a solution of known TDS. Suggest using the calibration solution that comes with the probe. It is 500 mg/L TDS or 1000 microsiemens/cm.
-Secondary Test: If you change the setting of the toggle switch while Logger Pro, DataMate, or DataPro is running, reset the program so that the calibration equation for the new setting is selected.

PUBLIC TIL ENTRIES
TIL 760: Do you sell Conductivity Standards?
Public List of TIL Entries for CON-BTA

SPECIFICATIONS
-new order code: CON-BTA
-old order code: CON-DIN
-Range of Conductivity Probe:
-Low Range: 0 to 200 microsiemens/cm (0 to 100 mg/L TDS)
-Mid Range: 0 to 2000 microsiemens/cm (0 to 1000 mg/L TDS)
-High Range: 0 to 20,000 microsiemens/cm (0 to 10,000 mg/L TDS)
-Resolution (with LabPro, Go! Link, ULI II, and Serial Box):
-Low Range: 0.1 microsiemen/cm (0.05 mg/L TDS)
-Mid Range: 1 microsiemen/cm (0.5 mg/L TDS)
-High Range 10 microsiemen/cm (5 mg/L TDS)
-Accuracy: +/-1% of full-scale reading for each range
-Response Time: 98% of full-scale reading in 5 seconds, 100% of full-scale in 15 seconds
-Temperature Compensation: automatic from 5 to 35 deg C
-Temperature Range(can be placed in): 0 to 80 deg C
-Cell Constant: 1.0 1/cm
-Description: ABS body, parallel carbon (graphite) electrodes
-Dimensions: 12 mm OD amd 150 mm length

CALIBRATION
-Calibrate? No. The sensor is set to match the stored calibration before shipping. Possible exception: quantitative water quality analysis.
-You may calibrate the probe using Logger Pro, DataMate, or DataPro. The calibration units can be microsiemens/cm, mg/L, mg/L as NaCl, or salinity in ppt.
-Select the conductivity range setting on the probe box. Perform the zero calibration point with the probe in the air. A very small voltage reading wil be displayed; call this value 0. Place the probe in a standard solution (a solution of known concentration), such as the NaCl standard solution that is packaged with the probe. Be sure that the entire elongated hole in the tip of the probe is immersed. When the voltage readings settle, enter the value for the standard solution in the desired units. For better results, you can calibrate the probe with two standard solutions. It is wise to select standards with concentrations above and below the readings that you anticipate taking with the probe during the experiment.

RELATED VERNIER PRODUCTS
-Conductivity standard solution, low range, Standard Low Concentration
(150 �S/cm) Solution, order code CON-LST, $15.00 (500 mL)
-Conductivity standard solution, mid range, Standard Medium Concentration
(1413 �S/cm) Solution, order code CON-MST, $15.00 (500 mL)
-Conductivity standard solution, high range, Standard High Concentration
(12880 �S/cm) Solution, order code CON-HST, $15.00 (500 mL)

Created by: jrandall on May 06 2005
Last updated by: gstahmer on August 17 2005