User manual HANNA INSTRUMENTS HI 3050N

[. . . ] cm Power Supply: 100/115/240 VAC 50/60 Hz or DC 1216V depending on models Fuse: 200 mA or 1A. 20 mm length x 5 mm diameter depending on models Stirring Bar: Magnet enclosed in PTFE for HI 190M, HI 190MB and HI 200M, 3 25 mm length x 7 mm diameter for other models, 50 mm length x 7 mm diameter HI 3050N stirrers with incorporated pH meter: Range: 0. 00 to 14. 00 pH 0. 0 to 100ºC Resolution: 0. 01 pH 0. 1ºC Accuracy: ±0. 01 pH ±0. 4ºC Input Resistance: 1012 Ohm Calibration: Double-point in neutral buffer solution plus an acid or alkaline buffer solution Offset Regulation: ±1 pH Slope: 85% to 105% Temperature Compensation: Completely automatic with HI 7667 temperature probe from 0ºC to 100ºC. The values indicated refer to temperature at 25ºC Table 3 lists the electrodes for various applications that can be used with HI 3050N. Table 1: Mini and Normal Stirrers Model HI 190M HI 190MB HI 200M HI 300N HI 301N HI 302N HI 303N HI 304N HI 3050N Capacity Speed Range (Ltr) (rpm) 1 1 1 2. 5 2. 5 2. 5 2. 5 2. 5 1 Min: 100 Max: 1000 Min: 100 Max: 1000 Min: 100 Max: 1000 Min: 100 to 500 Max: 100 to 1000 Min: 100 Max: 1000 Min: 100 to 500 Max: 100 to 1000 Min: 100 Max: 1000 Min: 100 Max: 1000 Display Casing Material All plastic Stainless steel cover All plastic Size Weight LxBxH (in mm) (Kg) 120x120x45 0. 6 0. 5 0. 6 1. 6 1. 6 1. 6 1. 6 1. 6 1. 3 120x120x45 180x180x70 180x180x70 180x180x70 180x180x70 180x180x70 180x180x70 Stainless steel cover Stainless steel cover 4-digit LCD Stainless steel cover for rpm 4-digit LCD Stainless steel cover for rpm plastic pH / set point 4 istrstirR2. p65 5 6 Table 2: Auto-speed Stirrers Model HI 310N HI 311N HI 312N HI 313N HI 314N HI 322N HI 324N Capacity Speed Range (Ltr) (rpm) 5 5 5 5 5 2. 5 5 Min: 100 Max: 1000 Min: 100 to 500 Max: 100 to 1000 Min: 100 Max: 1000 Min: 100 Max: 1000 Min: 100 to 500 Max: 100 to 1000 Min: 100 Max: 1000 Min: 100 Max: 1000 Display 4-digit LCD for rpm 4-digit LCD for rpm 4-digit LCD for rpm Timer Control 5 min. [. . . ] SLOPE knob for calibration of pH in acid (pH 4. 01 at 25ºC) or alkaline (pH 10. 01 at 25ºC) solution. NOTE: HI 190M, HI 190MB and HI 200M are not provided with ON/OFF switch. They are switched on when there is a power supply input. MINI AND GENERAL PURPOSE STIRRERS Models: HI 190M, HI 190MB, HI 200M, HI 300N normal stirrers and HI 310M Auto Speed stirrer Fig. 2 These general purpose stirrers are suitable for daily stirring applications in the laboratory. The HI 190M, HI 190MB and HI 200M are compact designed mini stirrers of 1 litre capacity suitable for use on crowed benches. The HI 190M and HI 190MB are enclosed completely in chemical and impact resistant plastic housing. The HI 200M, HI 300N and HI 310N are covered with a corrosion resistant stainless steel top. Newtonian fluids up to 1 litre USE HI 190M or HI 190MB or HI 200M 2. Non-Newtonian fluids up to 5 litres whose viscosities change during stirring or Newtonian fluids up to 5 litres or mixing operation where load changes during stirring. Make sure that the SPEED knob (B) and the ON/OFF switch (L) (except HI 190M, HI 190MB and HI 200M) are in the OFF positions. Place a beaker or glass container on top of the stirrer and place the stirring bar at the centre of the beaker base. Do not fill the brim and leave sufficient space to prevent spillage during stirring. Then the stirrer on with the ON/OFF switch (except HI 190M, HI 190MB and HI 200M). Adjust the SPEED knob slowly until the required stirring speed is achieved. Allow sufficient time for the mixing operation to attain uniform rotational flow. If no further stirring is required switch off the stirrer and disconnect the power supply. The selectable HIGH/LOW range allows you to set the speed precisely. APPLICATIONS 1. When set at say 1 min. , the fluid will rotate in one direction for min. at the desired speed in a repeated cycle until the stirrer is switched off. Fig. 5 These Auto-Speed stirrers are equipped with timer control to start and automatically stop the stirring process after a duration which can be preset from 5 min. to 2 hours and are ideal for routine stirring applications where the required stirring is known. They therefore free the operator from constantly having to monitor the stirring process. 14 13 istrstirR2. p65 15 16 As these are Auto-Speed stirrers with automatic feedback control, they are ideal for nonNewtonian fluids whose viscosities change during stirring or Newtonian fluids up to 5 litres capacity. [. . . ] 7, K) until the LCD showed value in accordance to the noted temperature of the buffer. (See Table 4) 19 This warranty is limited to repair or replacement free of charge. Damage due to accidents, misuse, tampering or lack of prescribed maintenance is not covered. If service is required, contact the dealer from whom you purchased the instrument. [. . . ]