订购注意事项
PT500-801S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%；
静压（耐压）为量程值的3到5倍，即高压端最大压力值；
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；
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：
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 PT500-801S products
1. Product range selection:
In order to achieve the best effect of product precision, life, stability and other functions, the range selection of the product is calculated according 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 measuring range;
The static pressure (withstand voltage) is 3 to 5 times of the range value, that is, the maximum pressure value at the high pressure end;
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;
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:
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;
