产品优势：
型号：PT500-707
精密稳定压力芯体；
冷媒介质（空调、冷库等）过程连接结构设计；
不锈钢过程连接,7/16-20NUF标准螺纹；
抗疲劳、耐冲击、良好的重复性能；
可替代同类型国外产品；
常用关键字：
冷媒压力变送器 冷媒压力传感器
空调压力变送器 空调压力传感器
Model: PT500-707
Precision stable pressure core body;
Process connection structure design of refrigerant medium (air conditioning, cold storage, etc.);
Stainless steel process connection, 7 / 16-20nuf standard thread;
Fatigue resistance, impact resistance and good repeatability;
It can replace the same type of foreign products;
Common keywords:
Refrigerant pressure transmitter refrigerant pressure sensor
Air conditioning pressure transmitter air conditioning pressure sensor
芯 片：
采用精密稳定感压芯片；选进的贴片工艺；
小量程芯片：充油硅芯片；
大量程芯片：压阻式厚膜芯片；
零点、满度，温补、线性补偿；
高阻抗、高精度、高稳定性；
100万次使用寿命以上；
信号处理及输出：
24位ADC采样处理芯片；
DSP数字信号调理算法；
多点性线温度校准；
电压电流过载保护；
标准工业信号输出：4-20mA(二线制)，0-20mA(三线制)，0-5VDC，0-10VDC，0.5-4.5VDC(三线制);
数字通讯信号输出：RS485-RTU、超低功耗RS485-RTU
采用先进的32bit微处理器和24bit ADC
传输协议采用通用的MODBUS-RTU协议
支持波特率：1200~57600bps，校验位：NONE、ODD、EVEN
支持用户二次校准、清零、反清零、恢复出厂等操作
支持11种单位切换，支持浮点型、整型、百分比、格式化输出
采集间隔0~43200秒(12小时)可设，既可连续采集，满足高速采集的场合，也可单次触发采集，最大限度降低功耗
数字通讯信号输出：Can2.0B
测量速率：10...1000Hz 可设置，默认 50Hz
CANopen输出内置 完整的 CANopen 协议栈，符合 DS301、DS404 规范，支持 LSS 服务，支持 BootLoader 在线 升级；
支持波特率(kbps)20/50/100/125/250(默认)/500/800/1000；支持特性 NMT/Heartbeat/SDO/PDO/LSS/Bootloader；CANopen 协议栈可以根据用户的要求进行定制；
J1939输出内置 J1939 协议栈，可以自由配置 PGN、SPN 以及 NAME，支持 BootLoader 在线升级；支持波特率(kbps)20/50/100/125/250(默认)/500/800/1000；支持特性PGN、SPN、NAME等自由配置，J1939 协议栈可以根据用户的要求进行定制；
结 构：
深度氩弧焊接，连接弹性材料与过程接头，强度高，抗冲击，耐疲劳；
冷媒介质（空调、冷库等）过程连接结构设计；
不锈钢过程连接,7/16-20NUF标准螺纹；
抗疲劳、耐冲击、良好的重复性能；
过程连接材料：304或316；
应 用：
空调、冷库等冷媒介质的压力测量与控制；
楼宇/工业/电力/石油/自动化等领域的设备压力测量；
Chip:
It adopts precision stable pressure sensitive chip and selective placement technology;
Small range chip: oil filled silicon chip;
Large range chip: piezoresistive thick film chip;
Zero point, fullness, temperature compensation and linear compensation;
High impedance, high precision and high stability;
More than 1 million times of service life;
Signal processing and output:
24 bit ADC sampling and processing chip;
DSP digital signal conditioning algorithm;
Multipoint linear temperature calibration;
Voltage and current overload protection;
Standard industrial signal output: 4-20mA (two-wire system), 0-20mA (three wire system), 0-5vdc, 0-10vdc, 0.5-4.5vdc (three wire system);
Digital communication signal output: rs485-rtu, ultra-low power rs485-rtu
Advanced 32 bit microprocessor and 24 bit ADC are adopted
The transmission protocol is MODBUS-RTU
Support baud rate: 1200 ~ 57600bps, check bits: none, odd, even
Support the user's secondary calibration, reset, anti reset, restore factory operations
Support 11 kinds of units switching, support floating point, integer, percentage, formatted output
The acquisition interval of 0 ~ 43200 seconds (12 hours) can be set, which can not only meet the needs of high-speed acquisition, but also trigger acquisition once to minimize power consumption
Digital communication signal output: CAN2.0B
Measurement rate: 10... 1000Hz can be set, the default is 50 Hz
CANopen output built-in complete CANopen protocol stack, in line with ds301, ds404 specifications, support LSS services, support bootloader online upgrade;
Support baud rate (kbps) 20 / 50 / 100 / 125 / 250 (default) / 500 / 800 / 1000; support features of NMT / heartbeat / SDO / PDO / LSS / bootloader; CANopen protocol stack can be customized according to user requirements;
J1939 output has built-in J1939 protocol stack. PGN, SPN and name can be configured freely, and bootloader online upgrade is supported;
Support baud rate (kbps) 20 / 50 / 100 / 125 / 250 (default) / 500 / 800 / 1000; support free configuration of features such as PGN, SPN and name
The J1939 protocol stack can be customized according to the user's requirements;
Structure:
Deep argon arc welding, connecting elastic material and process joint, high strength, impact resistance and fatigue resistance;
Process connection structure design of refrigerant medium (air conditioning, cold storage, etc.);
Stainless steel process connection, 7 / 16-20nuf standard thread;
Fatigue resistance, impact resistance and good repeatability;
Process connection material: 304 or 316;
Application:
Pressure measurement and control of air conditioning, cold storage and other refrigerant media;
Pressure measurement of equipment in building / industry / power / Petroleum / automation fields;
应用领域：
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中央空调机组
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空压机组
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供气系统
-
供气管道
-
给水设备
订购注意事项
PT500-707产品订购注意事项
1、产品量程选择：
为了使产品精度、寿命、稳定性等功能达到最佳效果，产品的量程选择参照以下公式计算：
量程 = 系统最大压力 X （1.2-1.5）倍；
产品的实际测量压力范围，应该在量程范围的15%-80%；
2、产品供电及输出：
供电范围的选择按产品的个输出规格确定：
常规4-20mA/0-20mA、0-5V/10V输出，直流12-30VDC供电；
通用RS485-RTU输出，直流12-30VDC供电；
0.5-4.5VDC输出，直流5VDC；
低功耗输出供电范围：3.6VDC（3-5VDC）
3、用户要了解产品的测量介质特性：
介质规格、介质温度、介质纯度（是否含有杂质或颗粒等）；
4、用户要了解产品的安装环境及安装方式：
隔爆防护等级能否满足现场工况要求；
室内或室外安装；
环境温度；
要求的密封等级；
设备的振动范围；
安装方式：螺纹、法兰、特殊结构；
安装空间是否满足产品外形尺寸；
Precautions for ordering PT500-707 products
1. Product range selection:
In order to achieve the best effect of product accuracy, life, stability and other functions, the range selection of the product is calculated by referring to the
following formula:
Range = x (1.2-1.5) times of the maximum system pressure;
The actual measuring pressure range of the product should be 15% - 80% of the range;
2. Product power supply and output:
The selection of power supply range is determined according to the output specifications of the product:
Conventional 4-20mA / 0-20mA, 0-5V / 10V output, DC 12-30vdc power supply;
General rs485-rtu output, DC 12-30vdc power supply;
0.5-4.5vdc output, DC 5VDC;
Low power output power supply range: 3.6vdc (3-5vdc)
3. The user should understand the measurement medium characteristics of the product:
Medium specification, medium temperature, medium purity (whether containing impurities or particles, etc.);
4. Users should understand the installation environment and installation method of the product:
Whether the flameproof protection level can meet the requirements of field conditions;
Indoor or outdoor installation;
Ambient temperature;
Required sealing level;
Vibration range of equipment;
Installation method: thread, flange, special structure;
Whether the installation space meets the overall dimension of the product;
