the taskguaranteeing reliable and safe system operation requires galvanic isolation between the sensor and controller (for example dcs, plc, etc.). a low-cost solution is provided by loop-powered isolators for standard signals because they do not require power supply units and wiring.the problemsare often, particularly in large plants, the lack of space for mounting the isolators and the increasing operating temperatures in distributors and enclosures. despite cost pressure a sufficient galvanic isolation shall be guaranteed.the solutionthat accounts for effectiveness as well as efficiency is found in the 6 mm class from knick: the isotrans® a 20400 loop-powered isolator offers one or two channels in a 6 mm housing. an extremely high component density of 320 channels per meter of top hat rail and excellent technical properties, for example, safe isolation or elimination of feedback through a load-stop function, make the isolators unbeatable. the cost/performance ratio is excellent.the housingthe new modern modular housing with a width of only 6 mm for 1 or 2 channels allows simple and quick assembly due to its sophisticated geometry.the function principlethe isotrans® a 20400 obtains its power directly from the measuring signal as a voltage dr-op without falsifying it. there are no costs for a power supply and wiring.the isotrans® a 20400 more or less has no self-heating that would cause the electronic components to age faster. together with a patented circuit technology, this means maximum reliability. due to this long service life, we give a 5-year warranty.the technologya transmission error of just 0.1 %, excellent square-wave response and very low residual ripple guarantee perfect signal transmission. the low intrinsic voltage dr-op of approx. 1.7 v presents just a slight signal load. the high test voltage up to 2.5 kv and safe isolation in accordance with en 61140 up to 300 v protect operating personnel against the mains voltage, for example.interference-free functionalitynow knick has considerably expanded the application possibilities of passive isolators by implementing a bürdenstop® (load stop) function. here, the current supplied at the primary side is maintained independently from the output load. thus, for the first time any excessive load increase at the output, such as caused by line breakage or inconstant loads including complex impedances, can be compensated for. |
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江蘇金湖恒控儀表有限公司 隔離器,配電器,信號隔離器
主要技術(shù)參數(shù)
輸入
輸入電流:4~20mA;0~20mA
配電電壓:17.5~25V
輸出
電流輸出: 4~20mA;0~20mA
負載電阻(RL):
≤800Ω (SN6421)
≤300Ω(特殊訂貨300Ω)(SN6422)
≤300Ω(特殊訂貨300Ω)(SN6424)
電壓輸出:1~5V;0~5V
負載電阻(RL):≥10KΩ
基本參數(shù)
電源:20~35V,d.c.
消耗電流(24V供電, 20mA輸出時):
≤70mA
輸出精度(20℃,4~20mA):0.1%F.S.
溫度漂移(-20~+60℃):溫度漂移(-20~+60℃)
響應(yīng)時間:≤5ms
絕緣強度(輸入、輸出、電源之間):
1500V,a.c.;1min
絕緣電阻(輸入、輸出、電源之間):
≥100MΩ
電磁兼容性:GB/T18268(IEC61326-1)
使用環(huán)境溫度:-20~+60℃
Link-Max 4-20mA 單路/雙路兩線制無源型電流環(huán)信號隔離調(diào)理器,也稱無源電流環(huán)信號調(diào)理器、安全柵。 無源電流環(huán)信號輸入隔離器,是將直流電流信號經(jīng)過隔離濾波處理后再傳送。使用時無需外部供電,可獲取輸入側(cè)或輸出側(cè)信號中的電流而工作。在實際應(yīng)用中能解決信號互聯(lián)可能出現(xiàn)的問題,同時可以抑制信號傳輸過程中的各種干擾?膳c各種電流信號輸出的溫度、壓力、液位、流量變送器等配套使用,完成取回參數(shù)信號、隔離轉(zhuǎn)換輸出的工作,輸出信號可接入數(shù)字顯示儀器、PLC、變頻器等設(shè)備儀器,并對接收設(shè)備起到保護作用。 LM-11 為輸入回路取電型單路電流環(huán)隔離器(別名:一進一出安全柵、信號調(diào)理器) LM-22 為輸入回路取電型雙路電流環(huán)隔離器(別名:二進二出安全柵、信號調(diào)理器) LM-11P 為輸出回路取電型單路電流環(huán)隔離器(別名:一進一出安全柵、信號調(diào)理器) LM-22P 為輸出回路取電型雙路電流環(huán)隔離器(別名:二進二出安全柵、信號調(diào)理器)
LM-11、LM-22是輸入回路取電型,該產(chǎn)品使用時可無需電源,但必須要求前面是有源的設(shè)備,能提供4-20mA的電流驅(qū)動; 對于前面是無源探頭、無源傳感器、無源儀表的情況,請選用LM-11P、LM-22P,該產(chǎn)品可從輸出回路取電,并向前給輸入回路的無源傳感器、無源探頭、無源儀表供電,前題是,輸出回路必須串接有電源,例如:LM-11P可和我公司的LM-P1C2C配合使用,而不能和LM-1C2C配合使用。
本公司還生產(chǎn)有源多路輸入輸出電流環(huán)隔離柵,可應(yīng)用在需要更高精度的地方。
LM-11是輸入回路取電型,該產(chǎn)品使用時無需外接輔助電源,但必須要求前面是有源的設(shè)備,能有4-20mA的電流輸入到本產(chǎn)品的輸入端; 對于前面是無源探頭、無源傳感器、無源儀表的情況,請選用LM-P11單路隔離配電器或LM-P22雙路隔離配電器,LM-P11/LM-P22是有配電功能的隔離柵或安全柵,除隔離電流環(huán)信號外還可向輸入回路的無源傳感器供電。本公司還生產(chǎn)有源多路輸入輸出電流環(huán)分配隔離柵,可應(yīng)用在需要更高精度的地方。如果用戶需要隔離的通道較多,可選擇LM-22雙通道無源隔離柵安全柵,該產(chǎn)品在一個機殼中集成了兩路LM-11,使用戶的安裝密度更高。
訂貨信息:
型號 | 輸入1 | 輸入2 | 輸出1 | 輸出2 |
ZKC302-10C0 | 4~20mA | 無 | 4~20mA | 無 |
ZKC302-1030 | 4~20mA | 無 | 1~5V | 無 |
ZKC302-10CC | 4~20mA | 無 | 4~20mA | 4~20mA |
ZKC302-10C3 | 4~20mA | 無 | 4~20mA | 1~5V |
ZKC302-1033 | 4~20mA | 無 | 1~5V | 1~5V |
ZKC302-11CC | 4~20mA | 4~20mA | 4~20mA | 4~20mA |
ZKC302-11C3 | 4~20mA | 4~20mA | 4~20mA | 1~5V |
ZKC302-1133 | 4~20mA | 4~20mA | 1~5V | 1~5V |
型號 | 輸入1 | 輸入2 | 輸出1 | 輸出2 |
ZKC302-10C0 | 4~20mA | 無 | 4~20mA | 無 |
ZKC302-1030 | 4~20mA | 無 | 1~5V | 無 |
ZKC302-10CC | 4~20mA | 無 | 4~20mA | 4~20mA |
ZKC302-10C3 | 4~20mA | 無 | 4~20mA | 1~5V |
ZKC302-1033 | 4~20mA | 無 | 1~5V | 1~5V |
ZKC302-11CC | 4~20mA | 4~20mA | 4~20mA | 4~20mA |
ZKC302-11C3 | 4~20mA | 4~20mA | 4~20mA | 1~5V |
ZKC302-1133 | 4~20mA | 4~20mA | 1~5V | 1~5V |
型號 | 輸入1 | 輸入2 | 輸出1 | 輸出2 |
ZKC302-10C0 | 4~20mA | 無 | 4~20mA | 無 |
ZKC302-1030 | 4~20mA | 無 | 1~5V | 無 |
ZKC302-10CC | 4~20mA | 無 | 4~20mA | 4~20mA |
ZKC302-10C3 | 4~20mA | 無 | 4~20mA | 1~5V |
ZKC302-1033 | 4~20mA | 無 | 1~5V | 1~5V |
ZKC302-11CC | 4~20mA | 4~20mA | 4~20mA | 4~20mA |
ZKC302-11C3 | 4~20mA | 4~20mA | 4~20mA | 1~5V |
ZKC302-1133 | 4~20mA | 4~20mA | 1~5V | 1~5V |
型號 | 輸入1 | 輸入2 | 輸出1 | 輸出2 |
ZKC302-10C0 | 4~20mA | 無 | 4~20mA | 無 |
ZKC302-1030 | 4~20mA | 無 | 1~5V | 無 |
ZKC302-10CC | 4~20mA | 無 | 4~20mA | 4~20mA |
ZKC302-10C3 | 4~20mA | 無 | 4~20mA | 1~5V |
ZKC302-1033 | 4~20mA | 無 | 1~5V | 1~5V |
ZKC302-11CC | 4~20mA | 4~20mA | 4~20mA | 4~20mA |
ZKC302-11C3 | 4~20mA | 4~20mA | 4~20mA | 1~5V |
ZKC302-1133 | 4~20mA | 4~20mA | 1~5V | 1~5V |