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Product Categories
- Fully automatic water filter
- Eddy current displacement sensor
- Automatic monitoring components for hydropower stations
- Thermal conductivity flow switch
- Peristaltic monitoring device
- Two position two-way solenoid valve
- Integrated oil-water monitoring controller
- Level transmitter
- Axis displacement monitoring device ZWJ
- Multi channel temperature inspection instrument
- vibration sensor
- Water pressure pulsation monitoring device
Xi'an Lantian Hengyuan Hydropower Equipment Co., Ltd
DAS-III multi-point temperature measurement acquisition device for power station temperature inspection instrument
NegotiableUpdate on 04/29
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Overview
The DAS-III multi-point non electric quantity acquisition and control system is designed by our company based on the development requirements of computer measurement and control technology in China. It can serve as a remote intelligent I/O in current DAS systems and has local display function. It can also be independently configured as a protection and control device during the operation of industrial equipment such as generator sets $r $n Power Station Temperature Inspection Instrument DAS-III Multi point Temperature Measurement Collection Device
Product Details
DAS-III multi-point temperature measurement acquisition device for power station temperature inspection instrument
DAS-III multi-point temperature measurement acquisition device for power station temperature inspection instrument
The DAS-III multi-point non electric quantity acquisition and control system is designed by our company based on the development requirements of computer measurement and control technology in China. It can serve as a remote intelligent I/O in current DAS systems, with local display function, and can be independently configured as a protection and control device during the operation of industrial equipment such as generator sets. Due to the use of gradient analysis on the changes in the measured parameters in the software, it effectively prevents the erroneous transmission of protection or control signals due to sensor and line transmission failures. In line with China's national conditions, it can replace similar imported products. The exchange of data with the upper computer conforms to the Modbus data communication format and can directly communicate with various PIC or other monitoring systems. It can also be equipped with corresponding modules and directly communicate with industrial Ethernet. It can be widely applied in various industries such as power, metallurgy, chemical engineering, and others.
Key Features:
2.1. Thermocouples K, T, E, B, S, thermal resistors G, Cu50, Pt100 (BA1, BA2), and standard signals 0-10mA, 4-20mA, 1-5V, etc. can be measured arbitrarily.
2.2. Equipped with 16 pairs of 32 freely configurable switch output signals.
2.3. There are 128 patrol points.
2.4. The analog signal conditioning section adopts independent channels for each channel, which is less likely to cause channel damage and improves anti-interference performance while also having a faster sampling speed.
2.5. Two independent alarm limits can be set for each point, and the alarm relay has a locking function when powered on to prevent false signals from being sent during power on or power off; When there is a line fault, the alarm limit 2 relay can automatically lock; Equipped with gradient operation function, it can automatically lock the alarm limit 2 relay when the gradient alarm is triggered, and the output adopts solid-state relay with strong resistance.
2.6. Data refresh cycle ≤ 3s.
2.7. It has parameter power-off holding function.
2.8. It has RS232 and RS422 (RS485) standard serial communication interfaces, which can easily communicate with the upper computer. The communication protocol can be modified according to user requirements, and a network interface module can also be optionally selected.
2.9. Equipped with a dot matrix LCD display screen with Chinese character display function.
2.10. It has non-linear error correction function and automatic cold end compensation for thermocouples.3. Technical indicators:
3.1. Measurable input signals: thermocouples K, T, E, B, S, thermal resistors G, Cu50, Pt100 (BA1, BA2), and standard signals 0-10mA, 4-20mA, 1-5V, etc. 3.2. Both two-wire and three wire connection methods are suitable for detecting components. 3.3 The number of patrol points can be configured arbitrarily according to requirements.
3.4 Effective measurement range (optional within the range of -50 to 1500 ℃)
K 0～1000℃
T 0～ 400℃
E 0～ 800℃
G -99.9～150.0℃
Cu50 -99.9～150.0℃
Pt100 -99.9～150.0℃
Cu100 0～150.0℃
BA1 -99.9～150.0℃
BA2 -99.9～150.0℃
0～10mAThe range of 4-20mA is set by the user, and if the user has any special requirements for the rangeThe requirement for 1-5V can be specified at the time of ordering.3.5 Resolution: Within the range of -99.9 to 200.0 ℃, the last digit of one word is 0.1;
The range is within -99.9-400.0 ℃, with the last digit being 5 words, which is 0.5;
The last digit of a range greater than 400.0 ℃ is 1.
3.6. Indication error: ± 0.5% F · S, where F · S represents the output range of the instrument.
3.7 Alarm control accuracy: same indication error.
3.8 Data refresh cycle ≤ 3s.
3.9 Working conditions: Environmental temperature: 0-45 ℃;
The relative humidity of the air is ≤ 85%; There should be no corrosive gases in the surrounding air.
3.10. Power consumption: ≤ 20W
3.11. Dimensions: 362 × 133 × 250mm
3.12 Installation: Embedded, with a hole size of 361 ± 1 × 134 ± 0.5mm (see attached figure)
Low pressure air control of the unitThe use of (such as unit braking, maintenance shrouds, pneumatic shear pins)XACLAKEcompanyJZFGSeries solenoid valve. This valve is a single coil, fully injection molded vacuum sealed. Can be powered on for a long time and operates reliably. Solved the problem of coil damage caused by humid environment. By selecting, the opening and closing form of the valve can be determined. Manual operation. The monitoring of the cutting pin of the turbine guide vane by this unit adopts pneumatic method. Under normal circumstances, compressed air enters the blind hole of the water turbine guide vane shear pin through solenoid valves, ring pipes, and hoses, and the pressure switch sends a signal to the monitoring system that the shear pin is normal. When the unit is in operation and a shear pin is cut, compressed air is released from the broken shear pin. The air pressure in the loop decreases, and the pressure switch sends an alarm signal. Close the solenoid valve and cut off the cutting pin air source. This system fundamentally avoids the electrical grounding short circuit that is prone to occur in the original electric mode, improving the reliability of the system.
Install separately on the water turbine unit, cylinder valve relay, and recovery mechanismMLK-1Displacement sensor, domestic position switch. The characteristics of this displacement sensor: The guide vane relay displacement sensor uses a non-contact magnetostrictive displacement transmitter. Due to the non-contact between the moving magnet and the sensor, no wear occurs, which is conducive to long-term use; High precision and protection level; Easy to install; The measurement value can be adjusted within a certain range; Measurement signals are used for monitoring and unit speed control devices; Different action points can be set according to the needs of control, and the on/off electrical signals are provided to the monitoring system. On domestic and foreign units. More transmitters that use this principle. Domestic position switches are difficult to adjust. Due to factors such as large size, some power stations have been replaced by non-contact linear position switches.
The generator shaft current monitoring device is composed ofXilan HengyuanThe company produces and provides a shaft current monitoring device consisting of a shaft current transformer and a shaft current display alarm device. The shaft current transformer is mounted on the main shaft of the generator and fixed in the center of the lower frame below the oil blocking pipe in the thrust oil groove of the generator. When the insulation of the generator bearing is damaged and a harmful shaft current is formed in the main shaft, the shaft current display instrument can display the magnitude of the shaft current. Send an alarm or shutdown signal. Thus, faults can be detected and eliminated before bearing damage occurs, avoiding the escalation of accidents.
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