KR 939B4 Fan Safety Monitor

KR 939B4 Fan Safety MonitorIt is a four channel intelligent disc mounted digital measurement and control instrument of the KR-939 family of the company. It can be easily matched with the KR-939SB4 integrated four parameter combination probe to achieve monitoring of the X, Y, and Z orthogonal vibration directions of the fan reducer and the temperature of the lubricating oil inside the reducer. Therefore, it is very suitable for comprehensive vibration safety and temperature rise safety online monitoring of various large and medium-sized rotating machinery and moving equipment, such as the bearing seat and rolling friction body of the fan water pump reducer

This instrument can also be used as a universal four channel digital display meter connected to various probes or transmitters for 4-20mA signal output, such as vibration, temperature, pressure, differential pressure, liquid level, etc., to form monitoring systems with different ranges and specifications.

Main functional features

1. 4 20mA industrial standard signal input table provides 24V power supply for on-site probes without the need for additional power supply

2. Four channel anti-interference remote transmission input zero range digital setting

3. The four row four digit LED digital display can simultaneously display the engineering measurement values of four input channels

4. Four channel pre alarm and parking alarm two-level digital setting alarm format selection

5. Alarm relay electrical contact output alarm holding function selection is convenient for forming parking interlock control

6. Four channel analog signal isolation and transmission output can be freely connected to other instruments or computer data acquisition systems

7. Serial digital communication isolation interface facilitates upper computer network management

8. Internally using a single-chip microcomputer as the main control and fewer peripheral components to improve reliability

9. The use of digital filtering, WATC H D O G multiple redundant power-off protection, wide voltage switching power supply and other technologies have a wide range of applications and high resistance

KR 939B4 Fan Safety MonitorMain technical indicators

The basic error is 0 2 FS or 1 word

2 Display resolution four row four digit LED digital tube

3 Input Signal Standard 4 20mA Current Input

4 alarm output, pre alarm and parking alarm, two-level dual group normally open and normally closed relay electrical contacts

Output contact capacitance AC 220V/2A, independent setting or disabling of alarm values for each channel

5 analog output options 12 bit D/A four channel (common ground) isolated transmission output 4 20mA load power

Resist 500 or 0 10m A or 1 5V or 0 5V output

6 Communication Interface Options Isolation Serial Communication R S-485 Baud Rate 300 9600bps Internal Settings

7 Feed Output DC 24V/200mA

8 power supply AC 85V 265V/10W

9 ambient temperature 0 50

10 environmental humidity<85 R H

Installation wiring

1. Dimensions 80mm, 160m, 125m, width, and height

2-pack opening size 76+0 7 m m 152+0. 7 m m

The typical wiring of the integrated 3D vibration and temperature probe with KR 939SB4 is shown in Figure 2

(The analog output and communication interface options in the figure must be declared at the time of ordering)