Hanna Instruments HI98188 is a waterproof, portable Conductivity Meter has an expanded conductivity range from 0.001 µS/cm to 400 mS/cm, as well as HI98188 Graphic Display Portable Meter EC/Resistivity/TDS/NaCl Meter with USP Autorange from 0.001 µS/cm to 1,000 mS/cm (actual EC) Ready to perform all three stages of USP <645> method required for EC measurement of pure and ultra pure water Linear, natural water, or no temperature compensation Memorize up to ten user profiles Log on demand and autolog; All logged data can be transferred to PC through USB port. GLP features Backlit, graphic display HI 98188 is a waterproof, portable conductivity meter that has an expanded conductivity range from 0.001 µS/cm to 400 mS/cm, as well as TDS, resistivity and three salinity scales. This meter automatically recognizes the probe type (two or four ring) and allows the user to adjust the nominal cell constant. HI 98188 is also ready to perform all three stages of USP <645> method required for EC measurement of pure and ultrapure water. Choose from seven memorized standards and obtain up to a five point conductivity calibration. For salinity (% range), HI 7037 standard allows users to make a one point calibration. EC and TDS measurements are fully customizable and include: cell contant selection between 0.0 and 10.000, selection of linear or natural water (non-linear) or no (for actual conductivity reading) temperature compensation, configurable temperature compensation coefficient range from 0.00 to 10.00%/ºC, choice of reference temperatures of of 15ºC, 20ºC and 25ºC and a selectable TDS factor between 0.40 and 1.00. Ten sets of customized measurement parameters can be stored as a user profile and recalled for later use. Data may be captured by either the log on demand option (400 samples) or by interval logging (from 5 sec to 1 minute). Data can be transferred to a PC using HI 92000 software and HI 920013 USB cable. A combination of dedicated and soft keys allows quick, intuitive operation in a choice of languages. Comprehensive GLP data is directly accessible by pressing the GLP key. At the touch of a button users can access the contextual help menu to obtain on-screen information and assistance about each feature. Designed for field use, this instrument can be easily operated with one hand and includes a rugged carrying case. With an extended battery life of up to 100 hours, users are assured long operation. The inductive charger can either be plugged into a standard 115V socket with the adapter included or a 12 Vdc source, such as a car's 12 volt accessory outlet. Specifications: Range EC 0.001 µS/cm to 400 mS/cm (actual conductivity 1000 mS/cm) 0.001 to 9.999 µS/cm; 10.00 to 99.99 µS/cm; 100.0 to 999.9 µS/cm; 1.000 to 9.999 mS/cm; 10.00 to 99.99 mS/cm; 100.0 to 1000.0 mS/cm (actual EC) (autoranging) Resistivity 1.0 to 99.9 Ohms; 100 to 999 Ohms; 1.00 to 9.99 KOhms; 10.0 to 99.9 KOhms; 100 to 999 KOhms; 1.00 to 9.99 MOhms; 10.0 to 100.0 MOhms (autoranging) TDS 0.00 to 99.99 mg/L (ppm); 100.0 to 999.9 mg/L (ppm); 1.000 to 9.999 g/L (ppt); 10.00 to 99.99 g/L (ppt); 100.0 to 400.0 g/L (ppt) (autoranging) NaCl %: 0.0 to 400.0%; seawater scale: 0.00 to 80.00 (ppt); practical salinity: 0.01 to 42.00 (PSU) Temperature -20.0 to 120.0°C Resolution EC 0.001 µS/cm; 0.01 µS/cm; 0.1 µS/cm; 0.001 mS/cm; 0.01 mS/cm; 0.1 mS/cm Resistivity 0.1 Ohm; 1 Ohm; 0.01 KOhms; 0.1 KOhms; 1 KOhms; 0.01 MOhms; 0.1 MOhms TDS 0.01 mg/L (ppm); 0.1 mg/L (ppm); 0.001 g/L (ppt); 0.01 g/L (ppt); 0.1 g/L (ppt) NaCl 0.1%; 0.01 Temperature 0.1°C Accuracy @ 25°C EC ±1% of reading (±0.01 µS/cm or 1 digit, whichever is greater) Resistivity ±1% of reading (±10 Ohms or 1 digit, whichever is greater) TDS ±1% of reading (±0.05 mg/L (ppm) or 1 digit, whichever is greater) NaCl ±1% of reading Temperature ±0.2°C (excluding probe error) Temperature Compensation -20.0 to 120.0°C Reference Temperature 15°C, 20°C and 25°C Temperature Coefficient 0.00 to 10.00 %/°C TDS Factor 0.40 to 1.00 Probe HI 76313 platinum, four ring conductivity/TDS probe with internal temperature sensor, DIN connector and 4 m (13.1') cable (included) Logging Log on Demand 400 samples Lot Logging 5, 10, 30 sec, 1, 2, 5, 10, 15, 30, 60, 120, 180 min (max 1000 samples) Memorized Profiles up to 10 Measurement Modes autorange, autoend, LOCK and fixed range PC Connectivity opto-isolated USB (with HI 92000 software) Battery Type / Life 1.2V AA rechargeable batteries (4) / approximately 100 hours of continuous use (without backlight); user selectable auto-off: 5, 10, 30, 60 minutes or disabled Environment IP67 Dimensions 226.5 x 95 x 52 mm (8.9 x 3.75 x 2”) Weight 525 g Conductivity EC Meter Hanna HI98188 à¤Ã×èͧÇÑ´¤ÇÒÁ¹Óä¿¿éÒ