低溫低壓熱電偶,WRNR2-15A, 量程規(guī)格 類別 | 代號 | 分度號 | 測溫范圍℃ | 精度等級 | 允許偏差△t | 鎳鉻-鎳硅 | WRNT | K | 0-800 | I | ±1.5℃或±0.004∣t∣ | II | ±2.5℃或±0.0075∣t∣ | 鎳鉻-銅鎳 | WRET | E | 0-600 | I | ±1.5℃或±0.004∣t∣ | II | ±2.5℃或±0.0075∣t∣ | 銅-銅鎳 | WRCT | T | -40-350 | I | ±0.5℃或±0.004∣t∣ | II | ±1℃或±0.75%t | 鉑電阻 | WZPT | Pt100 | -200-500 | * | ±(0.15+0.002∣t∣) | B級 | ±(0.30+0.005∣t∣) | 銅電阻 | WZCT | Cu50 | -50-100 | II | ±(0.30+6.0X10-3t) | 注:“t”為感溫元件實(shí)測溫度,對于鉑電阻和銅電阻則為感溫元件實(shí)測溫度的值。 公稱壓力 一般是指在常溫下,保護(hù)管所能承受的靜態(tài)外壓而不破裂,試驗(yàn)壓力一般采用公稱壓力的1.5倍。實(shí)際上,允許工作壓力不僅與保護(hù)管材料、直徑、壁厚有關(guān),而且還與其結(jié)構(gòu)形式、安裝方法、置入深度以及被測介質(zhì)的流速、種類有關(guān)。 熱電偶絕緣電阻: 常溫絕緣電阻的試驗(yàn)電壓為直流500V。測量常溫絕緣電阻的大氣條件為:溫度15~35℃,相對濕度45%,大氣壓力86~106Kpa。 對于長度超過1米的熱電偶,它的常溫絕緣電阻值與其長度的乘積不小于100兆歐·米, 即:Rr·L≥100MΩm L>1m 式中:Rr-熱電偶的常溫絕緣電阻值,MΩ; L-熱電偶的長度,m。 對于長度等于或不足1米的熱電偶,它的常溫絕緣電阻值應(yīng)不小于100 MΩ。 熱電阻絕緣電阻: 常溫絕緣電阻的試驗(yàn)電壓可取直流10~100V任意值,環(huán)境溫度應(yīng)在15~35℃范圍內(nèi),相對濕度應(yīng)不大于80%,常溫絕緣電阻值應(yīng)不小于100 MΩ。 雙金屬溫度計(jì),wss-561,wss-461,wss-552,wss-452,WSS-551,wss-451,wss-582,wss-482,wss-581,wss-481,wss-512,wss-412,wss-312,wss-511,wss-411,wss-311,wss-502,WSS-402,wss-302,wss-501,wss-401,WSS-301,WSSXP-481,WSSXE-481,WSSXP-411,WSSXE-411,WSSXP-401,WSSXE-401,WSSP-581,WSSP-481,WSSP-511,WSSP-411,WSSP-501,WSSP-401,WSSE-581,WSSE-481,WSSE-511,WSSE-411,WSSE-501,WSSE-401,WSS-583L熱套式雙金屬溫度計(jì),WSSX-403L,WSSX-483L,WSS-483L,WSS-413L,WSS-413L,WSS-503L,WSS-403L,WSSX-483S,WSSX-413S,WSS-483S,WSS-513S,WSS-413S,WSS-503S,WSS-403S,WSSX-486電接點(diǎn)雙金屬溫度計(jì),WSSX-416,WSSX-406,WSSX-485,WSSX-415,WSSX-405,WSSX-484,WSSX-414,WSSX-404,WSSX-483,WSSX-413,WSSX-403,WSSX-482,WZPK-124U,WZPK-406U,WZPK-503U,WZP-3212U,WZP-270U,WRNN2-436,WRP-130,WRP2-130,WRP-131,WRP2-131,WRQ-130,WRQ2-130,WRQ-131,WRQ2-131,WRR-130,WRR2-130,WZPK-336SA,WZPK2-335SA,WZPK-236SA,WZPK2-235SA,WZPK-333S,WZPK-334S,WZPK-335S,WZPK-236S,WZPK-235S,WZPK-234S,WZPK-233S,WZPK2-136S,WZPK2-135SA,WZPK-136S,WZPK-135S,WZPK-134S,WRNR-01,WRER2-14,WRNR2-14,WRER-14,WRER2-12,WRNR2-12,WRER-12,WRNR-12,WZP2-6312A,WZP-6312A,WZP2-631,WRN-624,WRNR2-01,SBWR-4170/440D隔爆本安型帶熱電偶電阻溫度變送器,SBWZ-4450,SBWZ-2450,SBWR-2160,SBWR-4150 |