絕緣阻抗:這是傳感器的一個重要性能參數(shù)。絕緣阻抗相當(dāng)于傳感器橋路與地之間串了一個阻值與其相當(dāng)?shù)牡碾娮?,對這樣一個電路網(wǎng)絡(luò)進行計算,可證明絕緣電阻的大小會影響傳感器的各項性能。而當(dāng)絕緣阻抗低于某一個值時,電橋?qū)o法正常工作。
推薦激勵電壓:一般為5~10伏。因一般稱重儀表內(nèi)配的穩(wěn)壓電源為5或10伏。
允許最大激勵電壓:為了提高輸出電號,在某些情況下(例如大皮重)要求利用加大極激勵電壓的條件下來獲得較大的信號,此時可加大激勵電壓;應(yīng)變片允許通過最大電流為25毫安,所以當(dāng)橋路阻抗為350歐的傳感器,允許最大極力電壓為17伏,由于采用高品質(zhì)的應(yīng)變計,我們把最大激勵電壓定為20伏。而對于橋路阻抗為700歐的傳感器,允許最大激勵電壓還可高一倍。
壓縮型稱重傳感器
DLC:1kN,2kN,5kN,10kN,20kN,50kN,100kN,200kN,500kN,1000kN
LCB:50N,100N,200N,500N,1kN,2kN,5kN,10kN
LCD:100N,200N,500N,1kN,2kN,5kN,10kN,20kN
LCF:500N,1kN,2kN
LCH:5kN,10kN,20kN,30kN,50kN,100kN,200kN,300kN,500kN
LCL-B:500N,1kN,2kN,5kN,10kN,20kN
LCL-M:500N,1kN,2kN,5kN,10kN,20kN
LCM:20N,50N,100N,200N,500N,1kN,2kN,5kN,10kN,20kN
LCP:10kN,20kN,50kN,100kN,200kN,500kN,1000kN,2000kN
LCS:10N,20N,50N,100N,200N,500N,1kN
LCS-H:5kN,10kN,20kN,30kN
LCS-L:1kN,2kN,3kN,5kN,10kN
LCU:5kN,10kN,20kN
LCW:5kN,10kN,20kN,50kN,100kN,200kN
LCX:5kN,10kN,20kN,50kN,100kN,200kN,500kN,1000kN,2000kN
LCX-P:2kN,5kN,10kN,20kN
LCY:10kN,20kN,50kN,100kN,200kN
LCZ:5kN,10kN,20kN,50kN,100kN,200kN,500kN,1000kN
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