Customization: | Available |
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Type: | Wall-Mounted Current Type |
Measuring Medium: | Temperature |
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It is usually used in conjunction with display instruments, recording instruments, electronic computers, etc. The output is 4~20mA. It can directly measure the temperature of liquids, steam, gaseous media, and solid surfaces within the range of -200ºC to 1300ºC in the presence of explosive substances such as carbon chlorides at the production site.
Thermocouple
Model | Graduation | Tolerance level |
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I | I1 | ||||
Range of temperature measurement ºC |
Tolerance value |
Range of temperature measurementºC |
Tolerance value |
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WRN | K | -40~+375 | ±1.5ºC | -40~+333 | ±2.5ºC |
375~1000 | ±0.004Itl | 333~1200 | ±0.0075Itl | ||
WRM
WRE
|
N E |
-40~+375 | ±1.5ºC | -40~+333 | ±2.5ºC |
375~1000 -40~+375 |
±0.004ltl ±1.5ºC |
333~1200 -40~+333 |
±0.0075ltl ±2.5ºC |
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375~800 | ±0.004ltl | 333~900 | ±0.0075ltl | ||
WRF | J | -40~+375 | ±1.5ºC | -40~+333 | ±2.5ºC |
375~750 | ±0.004Itl | 333~750 | ±0.0075Itl | ||
WRC | T | -40~+125 | ±0.5ºC | -40~+133 | ±1.0ºC |
125~350 | ±0.004ltl | 133~350 | ±0.0075ltl |
Model | Graduation | Range of temperature measurementºC | Precision grade | Allowable deviation |
WZPB | Pt100 | -200~+500 | A | ±(0.15+0.002ltl) |
B | ±(0.30+0.005Itl) | |||
WZCB | Cu50,Cu100 | -50~+100 | -- | ±(0.30+0.006ltl) |
Output signal | 4~20mA.load resistance 250,res4istance of the transmission conductor is 1000. | ||
Output method | Second-tier system | ||
Precision grade | Precision level of temperature transmitter:0.2;0.1;0.5 Display precision grade:Analog indicator 2.5 Digital display type 1 |
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Power supply | 24V.DC±10% | Protection level | lp65 |
Explosion-proof grade |
Explosion-proof:dIIBT4,dICT5,dIICT6 Essentially safe type:iaIICT6 |
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Insulation resistance | The insulation resistance between the instrument output terminal and the enclosure shall be not less than 50MQ. | ||
Thermal response time | When the change of phase step appears,the current output signal of the meter changes to the time which is equivalent to 50%of the step change Generally,T0.5is used to show that the stability time of phase step of the temperature transmitter is not more than one fifth of the stability time of thermal response r0.5,the thermal response time of a thermocouple (resistance)is used as the thermal response time of the instrument.When the stability time of phase step of the temperature transmitter is not more than half of the stability time of thermal response T0.5,the thermal response time of temperature transmitter is used as the thermal response time of the instrument. |
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Basic error | The basic error of the instrument should not exceed the synthetic error of the basic error of thermocouple (resistance)and temperature transmitter. |