E-19 U.S.A. and Canada For Sales Our Conductivity Instruments product line continues & Service to expand, visit omega.com for new details! The CDTX-300 two-wire transmitter is widely used for process control in industry today. This instrument is particularly useful in industrial conditions where electrical interference is an important factor. By galvanically isolating the signals, any interference created is prevented from reaching the transmitter. A loop isolator may be required when connecting to data acquisition equipment. The CDTX-300 uses two wires which reduces costs and eliminates the need for expensive coaxial cable. Two-wire transmitters are ideal when used in remote applications that do not have AC power available. The CDTX-300 series conductivity transmitter uses top of-the-line, 4-Ring Potentiometric probes. As opposed to the more widely used 2-Ring Amperometric method, the 4-Ring Potentiometric method provides the highest accuracy and repeatability attainable. When measuring liquids that have a high conductivity, the 2-Ring system is susceptible to polarization. 4-Ring electrodes eliminate the polarization effect by splitting the four rings into 2 current electrodes and 2 voltage electrodes. When placed in a conductive liquid, the 2 current electrodes take the alternating voltage and create a current. This alternating current produces a buffer field from which polarization is absent. The voltage is then measured in this field assuring no altered readings. pH and Conductivity Transmitter pH and Conductivity Transmitter Designed to Accept Signals Directly from a pH Electrode and a Conductivity Probe at the Same Time Direct Connection of the Probes to the Transmitter Assures a Positive Electrical Connection with No Signal Loss Most Useful in Remote Process Control Applications Comes complete with operator’s manual. Ordering Example: CDTX-300, pH/conductivity transmitter, PHE-7351-15, pH electrode, PHA-7, 7.00 buffer solution, CDE-300, conductivity cell, CDSA-4500, conductivity standard, $300 + 135 + 5 + 115 + 10 = $565. To Order (Specify Model Number) Model No. Price Description CDTX-300 $300 Mini surface mount pH/conductivity transmitter CDE-300 115 In-line or submersible conductivity probe CCT-100 130 Loop isolator PHE-7351-15 135 Industrial electrode for in-line or submersion PHA-4 5 4.00 pH buffer solution 500 mL (1 pt) bottle PHA-7 5 7.00 pH buffer solution 500 mL (1 pt) bottle PHA-10 5 10.00 pH buffer solution 500 mL (1 pt) bottle CDSA-4500 10 4500 ìS conductivity standard, 1 qt PSS-D12B 150 12 or 24 Vdc power supply FW-332 89 Reference Book: Advanced pH Measurement and Control Specifications Range: pH: 0 to 14 pH Conductivity: 0 to 10 mS/cm (mmho/cm) Accuracy [@20°C (68°F)]: pH: ±0.5% FS; Conductivity: ±2% FS Calibration: Manual through offset and slope trimmers for both pH and conductivity at: pH: 4/10 and 7 pH Conductivity: 0 and 5 mS/cm Temperature Compensation: Conductivity: Automatic from 0 to 60°C (41 to 132°F) with a ß of 2% CDTX-300 $300 HEX 25.4 (1) DIA 5 (0.2) 25.4 (1.0) 12 (0.5) 20 (0.8) 69 (2.7) 3/4 NPT 1/2 NPT CDE-300 Probe Specifications Dimensions: mm (in) AVAILABLE FOR FAST DELIVERY! Output: 4 to 20 mA isolated Power: 12 to 24 Vdc Protection: IP 54 Environment: 0 to 50°C (32 to 122°F); 0 to 95% RH non-condensing Dimensions: 160 L x 105 W x 31 mm H (6.3 x 4.1 x 1.2") Weight: 280 g (9.9 oz) CDTX-300, $300, shown smaller than actual size.

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