數(shù)字土壤壓力傳感器ZET7010SP旨在在結(jié)構(gòu)健康監(jiān)測系統(tǒng)（SHM）的框架內(nèi)使用，用于圍繞建筑物地基的地面壓力測量來控制沉降過程。
數(shù)字土壓力傳感器ZET 7010 SP由測量單元和基于應(yīng)變片電路的傳感元件組成。
數(shù)字土壓力傳感器安裝在測量性能方面（在堤防、土壩、橋梁支座和基礎(chǔ)板）上。施加在傳感器外殼上的壓力被傳輸?shù)絺鞲性瑐鞲性毫D(zhuǎn)換成電信號。測量模塊對接口轉(zhuǎn)換器接收到的信號進行數(shù)字處理，利用Modbus協(xié)議通過RS-485接口以數(shù)字格式發(fā)送數(shù)字?jǐn)?shù)據(jù)。
數(shù)字土壓力傳感器安裝在測量性能的區(qū)域，而用于數(shù)據(jù)通信的接口模塊則放置在電氣柜內(nèi).
數(shù)字式土壓力傳感器ZET7010SP應(yīng)用
不同結(jié)構(gòu)地基不均勻沉降的控制
充填過程中顆粒、糊狀和粘性介質(zhì)的控制
數(shù)字式土壓力傳感器ZET7010SP規(guī)格參數(shù)
| Metrological specifications | |
|---|---|
| Upper limit of pressure measurement range (URL) | 20 MPa |
| Sensitivity threshold (the minimal possible difference between two consequtively measured values) | 500 Pa |
| Measurement error | 0,1 % |
| Technical specifications | |
| Sampling rate | 1 Hz |
| Data transmission interface | RS-485 |
| Baud rate | 4800, 9600, 14400, 19200, 38400, 57600, 115200 bps |
| Parity check | 0 – no control; 1 – control (parity check, ODD) |
| Data protocol | Modbus RTU |
| Operational specifications | |
| Dimensions | Ø 120×17 mm |
| Weight, max. | 1,3 kg |
| Casing material | steel |
| Power supply of the instrument | 9 – 24 V |
| Consumed power | 0,5 W |
| Reverse polarity protection | yes |
| Operating temperature range | from -40 up to +80 °С |
| Operating environment | soil, granular, paste-like or viscous media |
| Product version | Standard (IP67 protection) |
| Electromagnetic compatibility EMC | |
| IEC 61000-4-2, ESD | contact 4 kV; air 8 kV |
| IEC 61000-4-4, EFT | power 0,5 kV; signal 0,25 kV |
| IEC 61000-4-5, Surge | |
