Description

Composition: Acrylic resin cover, plastic meter body, Bakelite terminal plate. Two stud mounting

Color:              Transparent cover, golden meter body, white scale plate, dark scale plate.

Scale Plate:   The normal scale plate is made of alloy-aluminium material white printed with black 

                         scales, Values, units, technique symbols, etc.

                         Scale plate with special requirements are available upon request.

                         Such as color, scale with lighting functions and PVC noctilucence are available upon  

                          request.

Pointer:         Normaly, the pointer is made of alloy-aluminium, it is black, and red, white are available

                        Upon request.

Anti-static:   All meters are subject to anti-static treatment to minimize the static-effect to the  

                        accuracy of the meters.

Technical Conditions

              1.Precision Grade:   1.5 (at *0±2°C)

              2.Working Environment:  Temperature range from **5°C to **5°C.

                                       Relative Humidity 5% ***0%, inclusive of frosting

              3.Humidity Added Error:  An additional error is less than 1.2% of the upper limit of the measured value with every *0°C of temperature change.

             4.Measurement Range: (*****0) r/min speed ratio1:1;

                                     (*****0) r/min speed ratio1:1;

                                     (*****0) r/min speed ratio1:2;

Mechanical Force Tolerance: the meter can withstand the acceleration speed at **0m/S² and ***0 continuous impacts of vibration in transport at the frequency ****0 times per minute

Operating position:   

1. Time for use: Able to be operated continuously without lubricant oil added.

              2.The sensor shall be used together with the indicator completing with it.

              3.The resistance of the transmission cable shall not be greater than 1.2 ohms, which are equivalent to the wire in the specification of RVV2*l6*0.*5 used for a transmission distance of *0m. An additional 0.2% error will result for each *0m of distance if the said wire is used.

Purpose

SZM**0 magnetic tachometer is composed of two parts – an indicator and a sensor, which are connected together through a transmission cable without any external power supplied, able to remotely measure the rotational speed of a variety of power equipment.

Working Principle

The sensor is mainly composed of a permanent magnet and an induction coil. The permanent magnet is coupled with a power equipment item through a flexible shaft. When the permanent magnet is rotated by the power equipment, the induced current is generated in the coil, which then is transmitted to the indicator via the transmission cable. Such fluctuating current, after rectified with its voltage reduced, is used to drive the wide angle ammeter for indicating the measured rotational speed.