10kg… 200kg Type D1/C3
1. Easy to install
2. Full stainless steel construction
3. Wide temperature range
4. Resistant against vibration
5. Hermetically sealed, IP 67
6. Compatible with other sources
稱重傳感器實(shí)際上是一種將質(zhì)量信號(hào)轉(zhuǎn)變?yōu)榭蓽y量的電信號(hào)輸出的裝置。也被成為測力傳感器 、力傳感器、重量感應(yīng)器等等。用傳感器應(yīng)先要考慮傳感器所處的實(shí)際工作環(huán)境，這點(diǎn)對(duì)正確選用稱重傳感器至關(guān)重要，它關(guān)系到傳感器能否正常工作以及它的安全和使用壽命，乃至整個(gè)衡器 的可靠性和安全性。在稱重傳感器主要技術(shù)指標(biāo)的基本概念和評(píng)價(jià)方法上，新舊國標(biāo)有質(zhì)的差異。主要有S型、懸臂型、輪輻式、板環(huán)式、膜盒式、橋式、柱筒式等幾種樣式。
參數(shù)
D1 C3
Accuracy class 0.05 0.017 % Emax
Minimum dead load lowest limit of specified measuring range Emin 0 0 % Emax
Maximum capacity highest limit of specified measuring range Emax s. table s. table
Max. side load (x) highest limit of static load in x-direction Llqx 200 200 % Emax
Max. side load (z) highest limit of static load in z-direction Llqz 200 200 % Emax
Min. LC verification interval minimum load cell verification interval, vmin = Emax /Y Y 2.778 11.111
Rated output relative output at nominal load Cn 2 2 mV/V
Tolerance on rated output permissible deviation from rated output dc < (+1.0 - 0.1) < 0.1 % Cn
Zero output signal load cell output signal under unloaded condition Smin < 1.0 < 1.0 % Cn
Repeatability error max. change in load cell output for repeated loading εR < 0.03 < 0.01 % Cn
Creep, during 30min. max. change in load cell output under nominal load dcr < 0.05 < 0.017 % Cn
Non-Linearity max. deviation from best straight line through zero dLin < 0.05 < 0.017 % Cn
Hysteresis max. difference in load cell output when loading from dhy < 0.05 < 0.018 % Cn
Temperature effect on Smin max. change of Smin/10K over BT TKSmin < 0.05 < 0.013 % Cn/10K
Temperature effect on C max. change of C /10K over BT TKc < 0.05 < 0.008 % Cn/10K
Input impedance between supply terminals RLC 350… 480 350… 480 ￥
Output impedance between measuring terminals RO 356 ± 0.2 356 ± 0.12 ￥
Insulation impedance between measuring circuit and housing at 100VDC RIS > 5.000 x 106 > 5.000 x 106 ￥
Recommended supply voltage to hold the specified performance Bu 4… 12 4... 12 V
Max. supply voltage permissible for continuous operation without damage Umax 18 18 V
Nominal ambient temp. range to hold the specified performance BT -10... +70 -10... +70 °C
Usable ambient temp. range permissible for continuous operation without damage BTu -30… +70 -30… +70 °C
Storage temperature range Transportation and storage BTl -50… +85 -50... +85 °C
稱重傳感器檢測電路的功能是把電阻應(yīng)變片的電阻變化轉(zhuǎn)變?yōu)殡妷狠敵?/span>。因?yàn)榛菟沟请姌蚓哂泻芏鄡?yōu)點(diǎn)，如可以抑制溫度變化的影響，可以抑制側(cè)向力干擾，可以比較方便的解決稱重傳感器的補(bǔ)償問題等，所以惠斯登電橋在稱重傳感器中得到了廣泛的應(yīng)用。 因?yàn)槿珮蚴降缺垭姌虻撵`敏度zui高，各臂參數(shù)*，各種干擾的影響容易相互抵銷，所以稱重傳感器均采用全橋式等臂電橋。
