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Quick Details

  • Place of Origin: Shanghai, China (Mainland)
  • Brand Name: Ce Zhen
  • Model Number: YD470
  • Power: Electronic
  • Usage: Vibration Testing Machine
  • Sensor input: integrated eddy current sensor
  • Input point: 2 point
  • Input Impedance: 50KΩ
  • Frequency Reponse: 1~18KHz
  • Record Output: 4~20mA ( Load ≤ 500Ω ) or 1~5V ( Load ≥1KΩ )

Packaging & Delivery

Packaging Details carton box

YD470 CW/CCW Machinery Speed Monitor 


1. Main Function   

The instrument is both for speed measurement, display, and  also for speed and   reverse warning alarm.When one of the two input sensors fails, it will automatically switchto another sensor to measure the rotational speed, and in the meantim0.e make a alarm instructions (point out which direction of the sensor is failure), and automatically block reversal protection relay malfunction.  


Measurement Rang Selection: Sub-file option is available within 0 to 9999 rev / min speed   range, user can have the instrument custom- made while selecting instrument and factory will preset the meter.


Display Function:  Rotational speed measurement value, alarm values, function information    is show on the display window. Instruction light of different color on the panel coordinate with instrument measurement status give signals. Within full measurement range, the accuracy  of   the    measurement   exceeing 1%.


Alarm Function: Proving one stop alarm set point, users can set the stop alarm value of the   rotational speed by themselves, and meanwhile the instrument light on the panel can instruct the “stop” alarm, wiring terminal Provide relay output.  


Reverse Alarm Function: Provide a “reverse rotation “alarm set point, when the machine reverses,   the instrument will alarm at the first time, and instrument light on the panel will instruct “reverse rotation “alarm, wiring terminal   provide relay output.  


Alarm Reset Function: When alarms, alarm reset is divided into self-locking and automatic reset;   while self-locks, alarm status keeping all the way, “reset” key should be pressed after monitoring status is normal, while   self-reset, alarm status will relieve automatically after monitoring status is normal. Users can select one of the ways while   selecting the instruments.


Self-diagnostic Function: Any input system breakdown, like probe break, wiring fault can be detected, while one of the wiring of the two input sensor breakdown, it will automatically transfer to another one to measure the rotational speed, it will issue a warming indication at the same time (point out which way of the sensor go wrong), to avoid error action for reverse protection, it will automatically cut off reverse protection circuit.  


Sensor Power Supply Current Limit Protection: If the sensor power is short circuit in the course of usage by accident, current limit ≤ 30mA,it will not produce sparks and it suitable for the safe requirement of flammable and explosive occasion.  


Record Output Function: There are 4~20mA analog signal output on the wiring terminal, measurement range which corresponding with the record output can be set in parameter setting function.(F2), users can adjust by themselves, output terminals are designed with short circuit protection function. 


Pulse Output Function: Pulse Output is 0~5V   square-wave   signal,  pulse output   equals per minute   r evolutions of the measured staff multiplied by the gear amount of the measured gear tray .  


Speeding and Reverse Rotation Alarm Response Time: Speeding and Reverse Rotation Alarm Response Time is very fast, response delay time <50ms.  


Parameter Setting Function: Instrument function using and parameters can be set by the key on the panel; it is smooth operation, convenient and quick.  


2. Technical Specification



Sensor input: integrated eddy current sensor;

Input point: 2 point;

Input Impedance: 50KΩ

System Input/Output Transfer Accuracy:

Record Output < ±0.3%   25°C    Digital Display < ±0.1%    25°C

Frequency Reponse: 1~18KHz

Record Output: 4~20mA ( Load ≤ 500Ω ) or   1~5V (  Load ≥1KΩ )

Buffered Output: Sensor signal output  from the rear of the panel terminal after amplified by the buffer.

Sensor Power Output: 24VDC±10%, 15mA, Short Circuit limite≤30mA



Alarm Set Point: Alert 1 point , Stop 1 point       

Relay Status: Often Lost Power 

Alarm Relay Output: 2 pair of  relays(Alert,Stop)(Always off, always on)

Output Capacity Of Electric Shock: 250VAC/7A or 30VDC/10A    

Alarm Reset: Automatic reset or self-locking



Operating Temperature: -20 ~ 70°C   

Storage Temperature: -30 ~ 85°C  

Relative Humidity: 20 ~ 95% Non-condensing    

Work Power: 220VAC, 50HZ   Power ≤ 10W  

Weight: 1.5Kg

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