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Programmable Display - Readout
The Model 2135 is a real time, hand held microprocessor controlled data acquisition unit. When used in conjunction with the Model 2031H electronic flowmeter, the unit receives the flow rate pulses and calculates the fluid velocity based on a highly stable crystal controlled time base. The well defined characteristics of the Model 2031H and the stable data acquisition time base forgoes the necessity of repeated, time consuming calibration procedures.
The large two line LCD displays the selected impeller type, either high speed (H) or low speed (L) and the real time fluid velocity on the top line. The velocity measurement is displayed in either centimeters/second,meters/second, feet/second or Knots. The impeller type and the velocity units of measure are easily changed by the setting of a user accessible DIP Switch.
The microprocessor also uses the fluid velocity value or distance in real time. A large, multifunction, push button switch conveniently placed on the top panel is used to initiate the elapsed time counter and the accumulated distance calculation. Activating the push button again causes the microprocessor to stop the elapsed time counter or distance and· to display the last velocity measurement, and total distance calculation. These values are displayed (locked) on the LCD until the push button is activated again. This option also allows the user to log the real time velocity and distance information via computer.
The unit also monitors the battery voltage and informs the user when to change batteries.
DATA READOUT: Two line, 32 character, high contrast super twist LCD. The display indicates the following: Impeller - high or low speed, Velocity - 0 to 9999 cm/see, m/sec, ft/sec or knots, Total Distance - 0 to 17,400 meters and Elapsed time - 9hrs : 59 minutes 59 seconds.
START/STOP: Instrument powered up when flowmeter cable is plugged in. Push button when pressed resets the elapsed time counter and starts real time calculation of speed, distance and volume. When pulled again freezes the calculation on the display.
HOUSING: Circuitry contained within a Waterproof(NEMA 4) ABS housing with nylon carrying strap. Weight .96 kgs (2.1 Ibs) Including four 1.5 volt AA batteries for up150hours continuous use.
DIMENSIONS: Height - 22.8 cm (9.0 in.) Width - 11.4 cm (4.5 in.), Depth - 4.4 cm (1.75 in.) Weight .45kg (1Ib)