User manual HANNA INSTRUMENTS HI 983305

[. . . ] If you need additional technical information, do not hesitate to e-mail us at tech@hannainst. com. This instrument is in compliance with directives EN 50081-1 and EN 50082-1. GENERAL DESCRIPTION HI 983305 is an instrument specially designed to meet the needs of simple continuous monitoring of conductivity. The housing has been completely sealed against vapors and humidity with IP54 rating. [. . . ] Setpoint knob SPECIFICATIONS Range Accuracy (@ 25°C/77°F) Typical EMC Deviation Temperature Compensation Setpoint Hysteresis Alarm Relay Probe Casing Power supply Dimensions Weight 0 to 20 µS/cm (EC) ±2% f. s. ±2% f. s. OPERATIONAL GUIDE · Turn the meter on by connecting the 12 VDC power adapter to the meter and to the mains. · Immerse the EC probe in the solution, making sure that metal pins are completely submerged. Note: In order not to affect the accuracy of measurements, it is important that the probe body does not touch nor stand close to the side walls of the vessel. The tip may lay on the bottom of the beaker. · Adjust the setpoint knob to the desired value in the range 1 to 5 µS/cm. · When the EC reading becomes 1 µS/cm higher than setpoint, the red alarm LED will blink and output relay is activated. Note: During alarm condition the relay is de-energized (the alarm contacts are open). When not in alarm condition, the relay is energized (the alarm contacts close). If the power supply is interrupted, the relay is de-energized as if in alarm condition to alert the operator. PROBE MAINTENANCE This meter does not need probe cleaning when used in pure water applications. If the probe needs to be cleaned, the following procedure should be performed. · Immerse the tip of the electrode in HI 7061 Cleaning Solution for one hour. · If a more thorough cleaning is required, brush the metal pins with very fine sandpaper. · After cleaning or when not in use, rinse the probe with tap water. CE DECLARATION OF CONFORMITY Recommendations for Users Before using these products, make sure that they are entirely suitable for the environment in which they are used. Operation of these instruments in residential areas could cause unacceptable interferences to radio and TV equipment. The metal band at the end of the probe is sensitive to electrostatic discharges. Avoid touching this metal band at all times. During operation, ESD wrist straps should be worn to avoid possible damage to the probe by electrostatic discharges. [. . . ] If the repair is not covered by the warranty, you will be notified of the charges incurred. If the instrument is to be returned to Hanna Instruments, first obtain a Returned Goods Authorization Number from the Customer Service department and then send it with shipment costs prepaid. When shipping any instrument, make sure it is properly packaged for complete protection. [. . . ]