WZP-330 Thermal Resistance Model: WZP-330WZP2-330

Details WZP-330 RTD I. Overview: WZP-330 thermal resistance, industrial heat transfer resistance as a measurement of temperature receptors, usually display instruments, recording instruments and supporting the use of electronic regulator. It can directly measure the various production processes range from -200 ℃ to 420 ℃ of liquid, vapor, gas and solid surface temperature. According to state regulations, I plant since 1987 began production in line with IEC international standard indexing number of PT1000 platinum resistance and in accordance with professional standards sub-degree No. of cu50 copper fabricated two types of thermal resistance, unified design thermal resistance. It should be consistent with JB / 8622-1997 and JB / T8623-1997 standards. Second, the principle industrial heat resistance points platinum RTD and copper heat resistance two categories. Thermal resistance is the use of material changes in humidity resistance itself also changes with the characteristics to measure the temperature. The heated portion of the thermal resistance (temperature sensing element) is to use a fine wire evenly wound on the skeleton double insulating material. When measured within the range of the average temperature of the dielectric layer. Assembly thermal resistance mainly by the junction box, protection tube, terminals, insulated sleeve turn compose the basic structure of the temperature sensing element, and with a variety of mounting device. WZP platinum resistance temperature sensing element is a platinum wire coil, double platinum resistance are used primarily by two sets to display, record, or regulator to examine the same location temperature applications. WZC copper resistance temperature sensing element is a copper wire winding. Third, the technical parameters: Measuring range and accuracy of thermal resistance category temperature range ℃ indexing number to allow deviation △ t ℃ WZP platinum resistance level -200-420 Pt100 B permit ± (0.30 + 0.005|t|) A level (- 200-650 ℃) allow ± (0.15 + 0.002|t|) WZC copper resistance -150-100 Cu50 -50-100 ℃ Tolerance ± (0.30 + 6.0x10-3t) Note: where "t" to sense temperature measure the absolute value of the measured element. WZP-330 thermal resistance thermal resistance temperature sensing element resistance 100 ℃, the (R100) and it is the ratio of the resistance value R0 at 0 ℃ time: R100 / R0 indexing number Pt100: A grade R0 = 100 ± 0.06Ω) B level R0 = 100 ± 0.12Ω) indexing number Cu50: R0 = 50 ± 0.05Ω) thermal response time when a step change in temperature occurs, the output changes to the thermal resistance equivalent to 50% of a step change in the time required called thermal response time, with T0.5 represents the thermal resistance at a nominal pressure generally refers to the working temperature protection tube can withstand external pressure (static) without cracking. Allow only nominal protection tube materials, installation method, into the depth and velocity and species related to the measured medium. RTD minimum insertion depth lmin = l yuan + 15D) lmin = - minimum usable depth into l yuan - sensing element length D-- protection tube went in the heat-affected by the thermal resistance measurement is 5mA, measuring Incremental resistance was converted into a temperature value should be less than 0.030 ℃. Insulation resistance test voltage insulation resistance at room temperature is preferable DC 10 ~ 100V any value, the ambient temperature in the range of 15 ~ 35 ℃, relative humidity should not exceed 80%. Temperature insulation resistance value is not less than 100MΩ. Fourth, the specifications and named: WZ specification contents P platinum resistance C copper resistance heat resistance materials --1 no fixture type 2 fixed threaded flanges 4 3 6 fixed threaded flange tapered protection tube fixed form 3 waterproof Terminal box in the form of a non-conventional setting: socket, a small cassette, etc. 0 Φ16mm wiring protection tube 1 Φ12mm protection tube design number of African Unity set up: a variety of stainless steel protection tube B WZ □ - □ □ □ B WZP-330 Thermal Resistance flanges thermal resistance Thermal resistance category Model No. indexing measurement range ℃ Protection tube material diameter d mm thermal response time T0.5S single platinum RTD WZP-320B Pt100 (BA1BA2) * -200 ~ 420 stainless steel 0Cr18Ni12M02Ti lCr18Ni9Ti Φ16 ≤90 WZP-321B Φ12 ≤30 WZP-330B Φ16 ≤90 WZP-331B Φ12 ≤30 double branched platinum RTD WZP2-320B Φ16 ≤90 WZP2-321B Φ12 ≤45 WZP2-330B Φ16 ≤90 WZP2-331B Φ12 ≤90 Copper thermal resistance WZC-320B Cu50 (G) * -50 ~ 100 stainless steel lCr18Ni9Ti Φ12 ≤120 WZC-330B Note: ① play the "*" No indexing specifications for special orders RTD specification table Φ16 diameter and length of the total length L mm Length L mm 300 350 400 450 550 650 900 1150 1400 1650 2150 225 250 300 350 450 550 650 900 1150