Maidesheng China MDS1028 signal conditioning
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- Model ： MDS1028
- Category： Temperature Sensors
- Brand ： Mai Desheng China
- Delivery Time： Request for a Quote for Further Details
- Manufacturer： Mai Desheng China
Products
Overview
MDS1028is a general-purpose intelligent two-wire temperature transmitter that can be used to detect thermal resistance,thermocouple,millivolt and resistance signals. The user canset the input type and range through PC configuration,and has excellent performance and reliability. performance and anti-interference ability; widely suitable for various industrial applications.
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characteristic
●Thermal resistance and thermocouple are common and can be configured throughPCconfiguration
●Input and output electromagnetic isolation
●Ultra-low operating voltage,supports higher load resistance
●Built-in cold junction compensation
●24-bit digital conversion combined with digital linearization technology provides higher accuracy
●Vacuum potting process,earthquake-proof and moisture-proof
●Electromagnetic compatibility complies withENandEN21
●Suitable for installation in standard junction box (DIN B)
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Input signal and basic error
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MDS1028 | input range | basic error | |||
input type | Measuring range | Minimum range | absolute error | Range error | |
hot electricity block | Pt 100 | -200～850℃ | 50℃ | ±0.4℃ | ±0.2%FS |
Pt 1000 | -200～850℃ | 50℃ | ±0.6℃ | ±0.2%FS | |
Cu50 | -50～150℃ | 50℃ | ±0.4℃ | ±0.2%FS | |
Cu100 | -50～150℃ | 50℃ | ±0.4℃ | ±0.2%FS | |
Ni1000 | -60～250℃ | 50℃ | ±0.6℃ | ±0.2%FS | |
linear resistor | 0-400Ω | 20Ω | 0.2Ω | ±0.2%FS | |
0-4000Ω | 100Ω | 0.5Ω | ±0.2%FS | ||
hot electricity I | Ktype | -200～1372℃ | 50℃ | ±1℃ | ±0.2%FS |
Stype | 0～1768℃ | 200℃ | ±3℃ | ±0.2%FS | |
TypeE | -200～1000℃ | 50℃ | ±1℃ | ±0.2%FS | |
TypeB | 100～1820℃ | 200℃ | ±3℃ | ±0.2%FS | |
TypeR | 0～1768℃ | 200℃ | ±3℃ | ±0.2%FS | |
Ttype | -200～400℃ | 50℃ | ±1℃ | ±0.2%FS | |
Jtype | -200～1200℃ | 50℃ | ±1℃ | ±0.2%FS | |
Ntype | -200～1300℃ | 50℃ | ±1.5℃ | ±0.2%FS | |
millivolt voltage | -10～100mV | 10mV | 40uV | ±0.2%FS | |
Remarks:1.The ambient temperature during accuracy testingis 25±2℃,24Vpower supply voltage,250ohm load;
2.The actual error during application is the maximum value of the absolute error and the range error.
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Working power supply
Power supply voltage:8~36V
Allowable power ripple:Vpp<1.0%
Power supply voltage influence:＜0.002%?FS?/V
insulation
Insulation resistance:≥500MΩ(500VAC)
Dielectric strength:1500VAC/60s(leakage current less than1.0mA)
enter
Input signals: RTD,thermocouple,millivolt and resistance signals
For details,seeInput Signal and Basic Error
output
2-wire4-20mAoutput,the output signal is linearly related to the input signal
Linear output range:3.9 mA≤I≤21.0mA
Fault low alarm value:? 3.5~3.8mA?? (factory default3.8mA,user configurable)
High fault alarm value:21.0~22.0mA ?? (factory default22mA,user configurable)
Output ripple:Vpp≤20mV
basic error
Basic error:≤±0.2 %?FS(seeinput signal and basic error for details)
temperature drift
Temperature drift:≤±0.01%?FS/℃
maximum load
Maximum load resistance= ? (supply voltage- 8V) /0.022A.
When the supply voltage is24V,the maximum load is727Ω?
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Thermal resistance related parameters
Maximum wire resistance allowed for a single sensor cable: 10Ω
Effect of sensor cable resistance: 0.05Ω/10Ω
Thermal resistor excitation current: ≤250uA
Thermal resistance connection mode: two-wire or three-wire input,user configurable,default three-wire system
Thermocouple related parameters
Cold junction compensation method: internal or external compensation,user configurable,factory default internal compensation Internal compensation accuracy: ≤0.5℃ (0~70℃) ≤1℃ (-40~85℃)
Damping parameters
0~60s,user configurable,factory default is 0.0s
Start Time
Performance within the technical specifications will be achieved within 5 minutes after the transmitter is powered on.
Response time (T90)
When the damping parameter is 0,the response time is ≤1s
