User manual HANNA INSTRUMENTS HI 98306

[. . . ] Conmet 2 Conductivity Meter with ATC* Specifications: - Range 0. 00 to 19. 99 mS/cm - Resolution 0. 01 mS/cm - Accuracy (@20°C / 68°F) ± 2% of Full Scale - Typical EMC Deviation ± 2% of Full Scale - Temp. Compensation Automatic 0°C to 50°C (32 to 122°F) - ATC Coefficient 1. 9% ±0. 15% per °C, referenced to 25°C (77°F) - Battery type 4 x 1. 5V ALKALINE - Battery life Approximately 150 hours - Operating temperature 0 to 50°C (32 to 122°F); 95% RH max. [. . . ] This avoids the possibility of crosscontamination errors. · When not in use, switch the CONMET 2 off. · To improve performance, clean the probe regularly by rinsing in alcohol for a few minutes. · Replace all 4x1. 5V batteries if the display becomes faint or disappears, or if the reading is unstable or unchanged. · To replace the batteries, switch the CONMET 2 off. Pull out the battery compartment and replace the batteries (Fig. Battery replacement must only take place in a non hazardous area using the battery type specified in this instruction manual. This meter is in compliance with the CE directives. *Automatic Temperature Compensation Since the conductivity concentration changes as the temperature of the sample changes, ATC standardizes the value you read to 25°C (77°F). This feature eliminates the need to measure the temperature and calculate its effects on the conductivity concentration of the sample each time you perform a measurement. The results will be measurements that are consistent with the temperature variable eliminated. Calibration Instructions: · If readjustment is required, connect the conductivity probe to the meter without covering the calibration slot (Fig. · To readjust the CONMET 2, dip it into the calibration solution HI 7030 (12. 88 mS/cm @25°C/77°F). Wait 30 to 45 seconds for the reading to stabilize and, if necessary, correct the reading to "12. 88 " by slowly turning the calibration trimmer with the small screwdriver provided. Return the conductivity probe to its working position when finished. The CONMET 2 Conductivity Meter is supplied in a rugged plastic carrying case with a 120 mL HI 7030 calibration solution bottle (Fig. [. . . ] To avoid damages or burns, do not perform any measurement in microwave ovens. The instrument has to be switched off before cleaning the conductivity probe. ISCONMET2 03/96 [. . . ]