QBJ-3XN fuel tank position monitoring and protection instrument QBJ-3X
It is an intelligent instrument that cooperates with the SZ-6 series magnetoelectric speed sensor to continuously monitor and measure the amplitude and intensity of the absolute vibration of the bearings of various rotating machinery.
It is available in both disc and wall styles.
The main function
With linear trimming. With power-on and power-down protection.
The historical peak and historical alarm status after the alarm is automatically saved.
Set parameters and measurement history parameters can be saved for a long time after power failure.
Technical Parameters
Input signal: SZ series magnetoelectric speed sensor;
Frequency response range: vibrating table 10~200Hz; intensity meter 10~100Hz;
Display mode: 3-digit LED digital display, accuracy: ±1.0%;
Measuring range: 0~500μm (peak-to-peak amplitude value); 0~30.0mm/s (vibration intensity);
QBJ-3XN fuel tank position monitoring and protection instrument QBJ-3X
I. Overview
The HT-3XN fuel tank oil level stroke monitor is a displacement display monitoring instrument specially produced for RUT-81 (A, B, C) fuel tank oil level series sensors. It is specially designed for measuring the oil level stroke of the steam turbine unit. It has the functions of remote transmission indication of the fuel tank oil level stroke and alarm constant current output.
The device is processed by a single chip microcomputer chip, and has the characteristics of High Precision , stable performance, strong anti-interference ability, high reliability, simple operation and convenient installation.
Second, the main function
? Implement intelligent processing: alarm I value, II value can be arbitrarily set through the panel buttons
? Panel button can adjust the range value, no potentiometer adjustment, convenient on-site debugging
? 30 seconds without pressing the operation button, you can return to the running state by yourself.
? The rear panel has a current output terminal proportional to the vibration amplitude value for recording output.
Third, the main technical indicators
? Display mode: 4-digit LED display
? Accuracy: ±1% (full scale)
? Range: ±200mm
? Current output: 4~20mA
? Switching output: AC220V/5A
? Alarm setting: Any setting within full scale
? Ambient temperature: 0~45°C
? Relative humidity: ≤80%
? Power supply voltage: 220VAC / 50Hz ± 10%
? Dimensions: 160 × 80 × 250mm
? Opening size: 152+1×74+1mm
I. Overview
The QBJ-3XYN oil motive monitoring and protection instrument is equipped with a TD-1 sensor to measure the oil motive. Oil motive monitoring is used to measure the degree of opening of the turbine oil motive, which is important for the normal operation of the entire unit. The UT-81A sensor is used to measure the fuel level of the fuel tank.
Second, technical indicators
Measuring range: 0 ~ 200mm (range can be customized by the user)
0 to ±200mm (range can be customized by the user)
Accuracy: system error ≤ 1%
Operating environment: Instrument temperature: -10 ° C ~ 45 ° C
Relative humidity ≤80% (instrument)
Sensor temperature: -25 ° C ~ 85 ° C
Relative humidity ≤90% (sensor)
Constant current output: 4 ~ 20mA
Alarm setting: arbitrarily set within the measurement range
Power: AC 220V ± 10% 50Hz
Dimensions: 160 × 80 × 260mm (deep)
Opening size: 154 × 78 × 260mm (deep)
Third, the working principle
The working principle of the monitoring device can be seen from the block diagram, which is composed of an oscillating circuit, a constant current source, a discriminator and the like. The inner core of the displacement sensor is wound around two sets of coils and moves in the sensor housing. When the coil is connected to a certain frequency of alternating voltage, an electrical signal corresponding to the displacement of the core is generated. The oscillator generates an oscillating voltage of 1~3KHz into the signal processing section. When the sensor is turned on, 1~3KHz alternating current enters the sensor, and changes with the displacement of the sensor core, and is converted by the signal processing link to obtain a ratio proportional to the core position. ~5V voltage, this voltage is 0~5V voltage signal output through the buffer, the other channel is 4~20mA current output through V/I conversion, and one way is sent to the alarm circuit for identification. When the limit is exceeded, an alarm signal can be issued.
Fourth, the main function
â— Stroke displacement display, respectively (positive, negative) alarm, (positive, negative) dangerous relay contact output â— Range lower limit ~ upper limit: current corresponding to (4-20mA) output
â— Power-on reset delay, normal light is off, and the lock-off delay is 5 seconds after recovery.
â— The alarm danger value can be set arbitrarily (within the range)
â— Alarm hazard relay output delay four-speed fixed value selection
â— Range free setting
â— In the data setting value view, the keyboard operation is not performed for 1 minute, and the measurement status is automatically returned.
Fifth, the installation method
1. The TD-1 oil motor stroke sensor can be installed at any position. The installation dimensions are shown in the figure, but at least the height of the bracket is installed at the distance from the magnetizer or metal object. The sensor housing cannot be close to the strong magnetic field and the high current wire.
2. The armature of the installed sensor requires linear motion, and it is repeated several times after completion to avoid causing jamming. The signal line of the sensor is easy to use shielded lines to avoid signal interference. The rest are used with reference to the thermal expansion detecting device.
3. When the sensor is connected, it is generally connected to the input of the meter by 1, 2, and 3 respectively. If you want to change the measurement direction, you can connect to the input by pressing 3, 2, and 1.
4. If the instrument output is used with the computer DCS system, its output 4~20mA current line cannot be combined with other line strings, and it should be input into the computer DCS system independently. Constant current load ≤ 1KΩ.
5. The instrument should be installed in the control cabinet or in the local instrument cabinet.
Extension Bars
graving machine special straight shank cutter, shank diameter is divided into (10/16/20/25/32/40 mm), the chuck is equipped with special ER chuck for engraving machine, clamping range can be selected according to their own needs purchase.
Material: 40Cr
Accuracy: 0.01mm
Support non-standard production
SISHUI TELI TOOL CO., LTD.
SISHUI TELI TOOL MANUFACTURING CO.,LTD locates in SISHUI Economic Developing Zone.Our products can be divided into 3 types: the first is various Tooling System for CNC Machine Tools,including Precision Tool Holders, Spring Collets, Rough or Precision Boring Heads and Tapping Collets;The second is other standard machine tool accessories, such as all kinds of Live Centers , Drill Chucks,etc.;
The third is the special machine parts on CNC machine tools as clients' samples or drawings.
Extension Bars
Extension Bars,Er Collets Extension Bar,Impact Extension Bar,Extension Breaker Bar
SISHUI TELI TOOL CO.,LTD. , https://www.er-collets.com