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E-mail
664688125@qq.com
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Phone
18255085484
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Address
23rd Floor, Unit 2, Building 16, Binhu City, Tianchang City, Anhui Province
Anhui Maoshu Instrument Co., Ltd
664688125@qq.com
18255085484
23rd Floor, Unit 2, Building 16, Binhu City, Tianchang City, Anhui Province
MS7700 (MS7720) Passive Signal Isolator
1、 Characteristics
MS7700 (1 in 1 out), MS7720 (2 in 2 out)
·Isolator without auxiliary power supply
·4-20mA input, 4-20mA output
2、 Technical specifications
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Passive isolator This is a passive isolator with 4-20mA current signal input and 4-20mA current signal output. When in use, there is no need for an external power supply, and the energy required for its operation comes from the current representing the signal. Passive isolators can effectively solve potential problems in signal interconnection in practical applications, while also effectively suppressing possible interference during signal transmission Electromagnetic isolation between the input and output circuits of the passive isolator. ·Standard 35mm DIN rail card installation. Plug and unplug terminal block with spring compression connection. ● Input Current signal input: 4~20mA Equivalent input impedance: 100 Ω+load resistance (when input is 20mA) Voltage drop: ≤ 2V (20mA) Overload current: ≤ 35mA ● Output Output current: 4-20mA
Output load resistance (RL): Calculation formula RL ≤ (Ui Ud) ÷ 0.02 Output ripple:<10mVp-p |
● Comprehensive parameters Standard accuracy: ± 0.1% (with a load of 100 Ω) Temperature drift: ± 0.015%/℃ Response time:<10ms Isolation capability: 2.5KV, 1min, 50Hz between input and output Insulation resistance: ≥ 100M Ω/500VDC between input and output Working environment temperature: -20~+60 ℃ Storage environment temperature: -40~+80 ℃ Shell material/protection level: PC (polycarbonate) material/IP20 Dimensions: 16 × 104 × 110 (mm) |
3、 Model selection

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4、 Dimensions and installation diagram
● Installation
1.35mm standard DIN rail card installation. Please pay attention to the stability and firmness of the card position during installation.
2. Install vertically as much as possible to facilitate heat dissipation inside the instrument.
● Typical applications
1. Used to provide distribution voltage to on-site transmitters and isolate and convert input signals.
2. Devices connected to the site: Active electrical signals from two-wire or three wire non smart transmitters.
3. Connect to the control system (or other unit combination instruments): The AI card of each DCS/PLC receives current or voltage signals.

● External dimensions
Width (thickness) x height x depth=16 x 116 x 110 (mm)

5、 Terminal wiring diagram
Terminal wiring: Plug and unplug terminal blocks, connected by self boosting spring type compression. The cross-sectional area of the wire shall not exceed 2.5mm2Multiple bundles or single stranded cables.
