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型號：PT500-551/433M無線壓力變送器

采用進口感壓芯片；選進的貼片工藝，具有零點、滿量程補償、溫度補償；
短距離433M/LORA無線發(fā)射接收，傳輸距離100–5000米（視距）；
一體式結(jié)構(gòu)，內(nèi)部電池供電/電池可拆可充電；
采集方式多樣化（儀表采集/PC采集/采集卡/PLC模塊等）；
可實現(xiàn)一對一或多對一采集；
高精度、穩(wěn)定、數(shù)字標定調(diào)節(jié)、放大集成電路；
通訊協(xié)議采集RS485-RTU/TTL，可實現(xiàn)低功耗；
不銹鋼外殼，不銹鋼過程連接,多種壓力密封方式；
可替代國外同類型高壓產(chǎn)品；

PT500-551-433M/LoRa無線接收模組:
USB 電平，鋁合金外殼的工業(yè)級無線串口傳輸模塊；
它基于 Semtech 公司的 SX1276/1278 芯片研發(fā)的 1Ｗ大功率無線數(shù)傳模塊；
采用了LoRa TM 擴頻調(diào)制跳頻技術高效的接收靈敏度和超強的抗干擾性能；
外部集成 PA 器件使其通信距離，接收靈敏度都遠超現(xiàn)在的 FSK、GFSK 調(diào)制；
對無線數(shù)據(jù)進行了 AES128 加密處理，使數(shù)據(jù)傳輸 更加安全，具有超強的抗干擾性；

空曠傳輸距離可達 8000 米(低速率/5W）USB 電平接口
工作頻段：433/470（1W）MHz  868/915（500mW）MHz

靈敏度高達 -139 dBm
輸出功率：5W（+40dBm）/ 2W（+36dBm）/ 1W（+30dBm）/ 500mW（+27dBm）
串口參數(shù)設置多樣化
LORA 調(diào)制模式
通訊頻道多達 40 個

PT500-551/433M 無線壓力變送器主要應用：
短距離無線水壓/水位監(jiān)控；
短距離無線水壓/水位監(jiān)控；；
遠程自動化控制系統(tǒng)等；



Model: pt500-551 / 433M wireless pressure transmitter

Imported pressure sensing chip is adopted; The selected patch process has zero point, full-scale compensation and temperature compensation;
Short distance 433M / Lora wireless transmission and reception, transmission distance 100 – 5000 meters (sight distance);
Integrated structure, internal battery power supply / battery detachable and rechargeable;
Diversified acquisition methods (instrument acquisition / PC acquisition / acquisition card / PLC module, etc.);
One to one or many to one acquisition can be realized;
High precision, stable, digital calibration, adjustment and amplification integrated circuit;
The communication protocol collects rs485-rtu / TTL, which can realize low power consumption;
Stainless steel shell, stainless steel process connection, various pressure sealing methods;
It can replace foreign high-voltage products of the same type;

Pt500-551-433m / Lora wireless receiving module:
USB level, industrial wireless serial port transmission module with aluminum alloy shell;
It is based on the 1W high-power wireless data transmission module developed by Semtech's sx1276 / 1278 chip;
Loratm spread spectrum modulation frequency hopping technology is adopted, which has high receiving sensitivity and strong anti-interference performance;
The external integrated PA device makes its communication distance and reception sensitivity far exceed the current FSK and GFSK modulation;
The wireless data is encrypted by aes128, which makes the data transmission more secure and has strong anti-interference;

Open transmission distance up to 8000 meters (low rate / 5W) USB level interface
Operating frequency band: 433 / 470 (1W) MHz, 868 / 915 (500MW) MHz
Sensitivity up to - 139 dBm
Output power: 5W (+ 40dbm) / 2W (+ 36dbm) / 1W (+ 30dBm) / 500MW (+ 27dBm)
Diversified serial port parameter settings
Lora modulation mode
Up to 40 communication channels

Pt500-551 / 433M wireless pressure transmitter is mainly used in:
Short distance wireless water pressure / level monitoring;
Short distance wireless water pressure / level monitoring;;
Remote automatic control system, etc;

一、技術參數(shù)
測量介質(zhì)：液體、氣體（與產(chǎn)品過程連接材料兼容）
壓力形式：表壓、絕壓
量    程：
0～100MPa；150 MPa；200 MPa；
250 MPa；300 MPa；350 MPa；400 MPa；;
450 MPa；500 MPa；
-0.1～0～0.6～5MPa;
-100KPa～10KPa～40MPa; ±10KPa～±100KPa

綜合精度：±0.25%FS；±0.5%FS；±1%FS
非 線 性：≤0.25%FS
重 復 性：≤0.1%FS
輸出信號：433M/RS485-RTU
433M/TTL
433M/RS485-RTU（低功耗）

供電電壓：

內(nèi)置電池12VDC

內(nèi)置電池5VDC
內(nèi)置電池3.7VDC

接收模塊：433M無線接收，5VDC供電,功率100mW/500mW/2W
絕緣阻抗：≥1000 MΩ/100VDC
介質(zhì)溫度：-20～80℃
環(huán)境溫度：-20～70℃
補償溫度：0～70℃
響應時間：≤500mS(與傳輸距離有關，通常設定3S～3600S采集一次)
過載壓力：150%FS
穩(wěn) 定 性：≤±0.15%FS/年
振動影響：≤±0.15%FS/年（機械振動頻率20Hz～1000Hz）
破壞壓力：3倍量程(量程小于350MPa)；2倍量程(量程大于400MPa)
防護等級：IP65
連接材料：304/316L
過程連接：M20X1.5,G1/2,用戶制訂規(guī)格

接收模塊

A、概述：

PT500-551-433M/LoRa無線接收模組，是一款 USB 電平，鋁合金外殼的工業(yè)級無線串口傳輸模塊，它基于 Semtech 公司的 SX1276/1278 芯片研發(fā)的 1Ｗ大功率無線數(shù)傳模塊，該器件采用了 LoRa TM 擴頻調(diào)制跳 頻技術高效的接收靈敏度和超強的抗干擾性能，加上外部集成 PA 器件使其通信距離，接收靈 敏度都遠超現(xiàn)在的 FSK、GFSK 調(diào)制，模塊對無線數(shù)據(jù)進行了 AES128 加密處理，使數(shù)據(jù)傳輸 更加安全，具有超強的抗干擾性。

B、特點

空曠傳輸距離可達 8000 米(低速率/5W）

USB 電平接口

工作頻段：433/470（1W）MHz

868/915（500mW）MHz

靈敏度高達 -139 dBm

輸出功率：5W（+40dBm）/ 2W（+36dBm）/ 1W（+30dBm）/ 500mW（+27dBm）

串口參數(shù)設置多樣化

LORA 調(diào)制模式

通訊頻道多達 40 個

工作電壓范圍：4.5 ~ 5.5 V

工作溫度范圍：-40 ~ +85 °C

C、性能參數(shù)

Measuring medium: liquid and gas (compatible with product process connecting materials)
Pressure form: gauge pressure and absolute pressure
Range:
0～100MPa； 150 MPa； 200 MPa；
250 MPa； 300 MPa； 350 MPa； 400 MPa；;
450 MPa； 500 MPa；
-0.1～0～0.6～5MPa;
-100KPa～10KPa～40MPa; ±10KPa～±100KPa

Comprehensive accuracy: ± 0.25% FS; ±0.5%FS； ±1%FS
Nonlinearity: ≤ 0.25% FS
Repeatability: ≤ 0.1% FS
Output signal:
433M / rs485-rtu
433M/TTL
433M / rs485-rtu (low power consumption)

Power supply voltage:
Built in battery 12VDC
Built in battery 5VDC
Built in battery 3.7VDC

Receiving module: 433M wireless receiving, 5VDC power supply, power 100MW / 500MW / 2W
Insulation impedance: ≥ 1000 m Ω / 100VDC
Medium temperature: - 20 ~ 80 ℃
Ambient temperature: - 20 ~ 70 ℃
Compensation temperature: 0 ~ 70 ℃
Response time: ≤ 500ms (related to transmission distance, usually set 3S ~ 3600s to collect once)
Overload pressure: 150% FS
Stability: ≤± 0.15% FS / year
Vibration influence: ≤± 0.15% FS / year (mechanical vibration frequency 20Hz ~ 1000Hz)
Failure pressure: 3 times the range (the range is less than 350Mpa); 2 times the range (the range is greater than 400MPa)
Protection grade: IP65
Connecting material: 304 / 316L
Process connection: m20x1 5. G1 / 2, specifications formulated by users