QBJ-3C2 Intelligent Speed Monitoring InstrumentDetailed product description：

The QBJ-3C2 intelligent speed monitoring device is equipped with a CS-2 sensor to achieve rotational speed measurement, zero speed measurement, and reverse speed measurement of rotating machinery. This instrument adopts a high-end single-chip microcomputer to form a speed measurement system. In the design, the computer and the instrument are integrated, and full attention is paid to the organic combination and unity of hardware and software. The software programming is flexible and variable, and has the function of setting the measurement range and alarm value arbitrarily. It can meet different measured conditions such as 1 slot or 3 slots, 30~120 teeth, etc. It has zero speed alarm function and reverse alarm function. Users can choose the most suitable function according to different conditions. This instrument is easy to use, highly reliable, and equipped with software and hardware watchdog circuits. It is the latest generation instrument for measuring speed and is suitable for speed measurement requirements of power plant turbines, industrial turbines, water pumps, and fans. The QBJ-3C2 intelligent speed monitoring device can be divided into two types: disk mounted and wall mounted, for users to choose from.

Technical specifications of QBJ-3C2 intelligent speed monitoring instrument

Measurement range: 0~10000r/min (arbitrarily set)
Measurement accuracy: 0.1%
Display sampling time: 4 times/second
Alarm sampling time: 0.1 seconds
Input waveforms: sine wave and square wave
display
Method: Five digit LED display
Number of teeth on the gear disc: 30~120 teeth can be set arbitrarily or with 1 or 3 slots
Output standard: current 4-20mA,
And it automatically corresponds to the maximum value memory function with any full range
Power supply: AC220V ± 10%, 50Hz
Working environment: Instrument temperature -10 ℃~50 ℃ Relative humidity ≤ 80% Sensor temperature -10 ℃~120 ℃ Can measure forward and reverse rotation
Alarm and danger values can be set by users through the panel keyboard, and the set values can remain unchanged for fifty years
Disk mounted table opening size: width 154 x height 78 x depth 260 (mm)
Wall mounted table installation dimensions: length 275 x width 170 x thickness 98 (mm)
Schematic diagram of instrument terminal wiring CS-2 type speed sensor is an active three wire sensor:
1. The sensors are labeled with positive input, negative COM, and power supply (applicable to DC+12V~24V)
2. Rotating mechanical equipment requires one CS-2 sensor to measure positive rotational speed; If it is necessary to measure the reverse speed, use two CS-2 sensors
3. The CS-2 sensor can measure forward or reverse rotation, and the two sensors can be interchanged. When installed, they are clamped at a 90 degree angle, and the end face of the sensor is perpendicular
Tested gear surface, installation distance: between 1.0-1.5mm
4. Gear material requirements: All kinds of magnetic steel materials are acceptable. Gear modulus: 1.5 or above is sufficient
5. Measurement object: 1 slot, 3 teeth, 30-120 teeth (can be customized by the user)
6. Sensor installation thread: M16 × 1 sensor screw tube length L: 60~200mm (can be customized by the user)
7. The sensor leads are labeled with (positive input, negative COM, power supply DC+12V) and should be connected to the instrument terminal CS-2 for speed transmission

Characteristics of QBJ-3C2 Intelligent Speed Monitoring Instrument Sensor:
1. Inductive iron metal targets
2. Digital current sink output (open collector)
3. Better signal-to-noise ratio than magneto electric sensors
4. Excellent low-speed and high-speed performance, 0~100KHz