Mining intrinsic safety temperature vibration sensor

Mining intrinsic safety temperature vibration sensorProduct Overview

The GWZ120/25 intrinsically safe temperature vibration transmitter designed and produced by our company is an integrated temperature and vibration detection deviceThe vibration velocity measurement part of the dual function product is an electromechanical conversion product manufactured using the piezoelectric effect of piezoelectric crystals,The charge amplifier, integration processing, effective value conditioning unit, and V-I circuit for vibration and temperature are all built into the stainless steel transmitterInside the steel casing; The temperature measurement part uses an analog voltage output type IC chip as the sensitive unit, with vibration speed and temperature signalsEach is output through a 4mA to 20mA transmitter conversion circuit. This product is specifically designed for precise measurement of vibration speed and temperatureTested, the product has wide frequency response, high accuracy, fast power on and zeroing speed, strong anti-interference ability, good airtightness, long service life, etcCan be advantageous. This product is only suitable for dynamic temperature and vibration velocity measurement.

Mining intrinsic safety temperature vibration sensortechnical parameters

Rated voltage (vibration, separate power supply): DC24V;

Working current (vibration): ≤ 60mA

Rated voltage (temperature, separate power supply): DC24V;

Working current (temperature): ≤ 60mA

Speed measurement range: (0-25.4) mm/s;

Speed output signal: (4-20) mA (dual wire system);

Basic speed error: ± 3% FS

Temperature measurement range: (0-120) ℃;

Temperature output signal: (4-20) mA (dual wire system);

Basic temperature error: ± 2% FS

Protection level: IP67

Installation Instructions

As a dynamic measurement vibration velocity transmitter, installation technology is extremely important in the engineering implementation process, and inappropriateInstallation can cause distortion of measurement data, sometimes even making it impossible to measure.

1. Installation of transmitter body: In order to ensure accurate vibration velocity data and convenient use, the transmitter should be tightened correctly in the sensitive directionInstallation The fastening installation method should be selected in the following recommended order.

1.1 Screw installation methodThe bottom surface of the transmitter should be kept smooth, and it is best to apply a layer of grease or wax between the transmitter and the measured object,To increase the contact stiffness, tighten and install with nominal screws to obtain the frequency response characteristics of the transmitter calibration.Screw installation: The recommended installation torque is 3N · m.

1.2 Adhesive installation methodWhen drilling is not allowed on the tested object, adhesives allowed by the equipment owner, such as "502" and Loctite "454", can be usedWait for quick drying adhesive or other materials such as epoxy resin adhesive, double-sided adhesive tape, etc. Adhesive installation affects the frequency and amplitude characteristics of the transmitterThere is a certain impact, sometimes leading to unacceptable measurement errors. Adhesive installation is more sensitive to temperature changes, and shouldCarefully select based on the actual situation of the project.

1.3 Magnetic Seat MethodThe installation method of magnetic suction seat may cause a decrease in the upper limit of the frequency response of the vibration velocity transmitter and abnormal low-frequency response. Caution should be exercisedUsing this method for installation can easily limit the measurement range, and the magnetic attraction is greatly affected by temperature. After reaching a certain temperature, the magnetic poleAbility rapidly deteriorates, please be aware and choose carefully.

2. Cable connection technology

The selection of shielded cables should comply with relevant standards and regulations. In harsh environments such as high temperature, high humidity, acid alkali, salt spray, etc., they should be selectedUse cable components that meet the protection level, and if necessary, fill gaps with protective soft rubber to isolate moisture, acid, alkali, and salt spray. conductAfter the electrical connection of the cable, the cable should be fixed as short as possible at the transmitter end. When conditions permit, the transmitter should be kept away from itStrong acid and strong alkali environment to prevent electrical contact parts from being contaminated or damaging electrical connection performance.