User manual HANNA INSTRUMENTS HI 98143-04

[. . . ] Terminal # Probe Wire Color Cond. Probe 1 green Cond. Probe 2 white Cond. Probe 3 red Cond. Probe 4 blue Temp. Sens. 2 grey SH yellow-green GENERAL DESCRIPTION http://www. hannainst. com This Instrument is in Compliance with the CE Directives WARRANTY HI 98143 is warranted for two years against defects in workmanship and materials when used for its intended purpose and maintained according to instructions. The electrode and the probe are warranted for a period of six months. This warranty is limited to repair or replacement free of charge. [. . . ] An HI 1283 stainless steel probe to prevent potential grounding problems can be connected thus ensuring longer life for your electrode. Measurements are accurate and the meter can be calibrated at one or two points. POWER CONNECTION · Connect a 2-wire cable to the 12 24 VDC power source paying careful attention to its polarity. SPECIFICATIONS Range pH 0 to 14 pH EC 0 to 10 mS/cm Accuracy(@ 25°C/77°F) pH ±0. 5% f. s. Typical EMC Deviation pH ±2% f. s. EC ±2% f. s Output pH 0 4 V (isolated) EC 0 4 V (isolated) Temperature Compensation EC Automatic from 0 to 60 C with ß=2%/ºC Calibration Manual with two trimmers pH Offset: ±2pH; Slope: 80 110% EC Slope ±20% OUTPUT CONNECTION · Connect a 2-wire cable from the pH output terminals (#8) to the pH receiver and another 2-wire cable from the EC output terminals to the EC receiver paying attention to the polarity. Voltages at these contacts vary proportionally to the measured pH and EC values in the range of 0 4 V. OPERATIONAL GUIDE · HI 98143 may be wall-mounted at any convenient location close to the measurement site. To minimize thermal drifts due to extreme temperature fluctuations, particularly if measurements are conducted outdoors, it is recommended that the transmitter is protected in a casing. · Connect pH electrode, EC probe, power supply and receiving devices to the HI98143 according to previous instructions. · Remove the protective cap from the pH electrode and immerse it into the sample, at least 4 cm. · When the matching pin is used dip it together with the pH electrode, if matching pin is not in use, connect the matching pin terminal to the reference with a jumper wire. · Immerse the EC probe in the sample. · For continuous flow-thru measurements, the probes can be easily installed in any standard ½" pipe tee. Use Matching Pin Reference · Turn the transmitter on. · Rinse the electrode and immerse it in a pH 7. 0 buffer with the grounding probe. Stir gently and then wait for the reading to stabilize. · Adjust the pH Offset Calibration Trimmer with a small screwdriver until the multimeter displays 2. 00 V. better simulate the installation ambient, the probe tip should be close to the beaker bottom edge. · Allow the reading to stabilize and then adjust the EC Slope Calibration Trimmer to read 2. 00 V on the multimeter. ACCESSORIES HI 1283 Stainless steel grounding probe with 2 m (6. 6') cable HI 1001 "flow-thru" double junction pH electrode with3 m (6. 6') cable and BNC connector HI 3001 "flow-thru" 4-platinum ring EC probe with 3 m (6. 6') cable and temperature sensor HI 7004M pH 4. 01 buffer solution, 230 mL bottle HI 7007M pH 7. 01 buffer solution, 230 mL bottle HI 7039M 5. 00 mS/cm (EC) calibration solution, 230 mL bottle HI 7061M Electrode cleaning solution, 230 mL bottle HI 710005 115 to 12 VDC power adapter HI 710006 230 to 12 VDC power adapter HI 77400P pH 4 & 7 solutions, 20 mL sachet (5 each) The EC calibration is now complete. PH ELECTRODE MAINTENANCE · Rinse and immerse the pH electrode and the grounding probe in pH 4. 0 (or pH 10. 0) buffer and stir gently. · Wait a couple of minutes and then adjust the pH Slope Trimmer until the multimeter shows the value of the second buffer expressed in V (1. 14V for pH 4 and 2. 86V for pH 10 solution). Teflon tape between the probe and the pipe to ensure a leak free joint. Take care not to overtighten it, as excessive pressures can cause probe damage. Note: to prevent damage to the electrode, disconnect the pH electrode before turning the meter off. · Do not be alarmed if white crystals appear around the electrode protective cap. This is normal with pH electrodes and they dissolve when rinsed with water. · When not in use, rinse the electrode with tap water to minimize contamination and store it with a few drops of storage (HI 70300) or pH 7 (HI 7007) solution in the protective cap. [. . . ] To avoid damages or burns, do not perform any measurement ISTR98143-04R1 02/01 in microwave ovens. EC PROBE MAINTENANCE · When calibration can no longer be achieved, remove conductivity probe from the system for maintenance. If a more thorough cleaning is desired, remove the plastic protective sleeve and clean the platinum sensors with a nonabrasive cloth or HI 7061 cleaning solution. Reinsert the sleeve in the same direction as before, paying attention the sleeve hole touches the threaded edge. pH CALIBRATION Pour small quantities of pH 7. 0 (HI 7007) and pH 4. 0 (HI 7004) solution into two clean beakers. Calibration with pH 4. 0 (HI 7004) solution is recommended for measuring acidic samples. [. . . ]