訂購注意事項(xiàng)
PT500-540 TTL數(shù)字壓力變送器訂購注意事項(xiàng)
1、產(chǎn)品量程選擇:
為了使產(chǎn)品精度、壽命、穩(wěn)定性等功能達(dá)到最佳效果,產(chǎn)品的量程選 擇參照以下公式計算:
量程 = 系統(tǒng)最大壓力 X (1.2-1.5)倍;
產(chǎn)品的實(shí)際測量壓力范圍,應(yīng)該在量程范圍的15%-80%;
2、產(chǎn)品供電及輸出:
供電范圍3-5VDC:
低功耗TTL-RTU輸出;
請先了解通訊協(xié)議;
3、用戶要了解產(chǎn)品的測量介質(zhì)特性:
介質(zhì)規(guī)格、介質(zhì)溫度、介質(zhì)純度(是否含有雜質(zhì)或顆粒等);
4、用戶要了解產(chǎn)品的安裝環(huán)境及安裝方式:
室內(nèi)或室外安裝;
環(huán)境溫度;
要求的密封等級;
設(shè)備的振動范圍;
壓力密封方式:錐度密封、端面密封、弧面密封、球面密封;
安裝空間是否滿足產(chǎn)品外形尺寸;
Precautions for ordering PT500-540 TTL digital pressure transmitter
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:
Power supply range 3-5vdc:
Low power ttl-rtu output;
Please understand the communication protocol first;
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;
Pressure seal: taper seal, face seal, arc seal, spherical seal;
Whether the installation space meets the overall dimension of the product;
使用注意事項(xiàng)
PT500-540 TTL數(shù)字壓力變送器使用注意事項(xiàng)
產(chǎn)品供電3.6VDC(范圍:3-5VDC);
嚴(yán)禁使用硬物(如:螺絲刀、手指、鐵釘?shù)龋┤ナ沟脡盒倔w受壓力測量輸出;
電源和信號線按訂購產(chǎn)品規(guī)格要求,正確接線;
產(chǎn)品安裝時,受力部位為“過程連接六方扳手位”,扳手規(guī)格與六方相對應(yīng);
嚴(yán)禁被測系統(tǒng)的介質(zhì)溫度、壓力量程、激勵電壓超過變送器的額定使用范圍;
注意保護(hù)變送器引出電纜,現(xiàn)場使用跨度過大時,建議使用金屬管保護(hù)或架空;
壓力變送器屬精密計量儀器,切勿強(qiáng)加沖擊、摔打,以免損壞芯體;
產(chǎn)品安裝于通風(fēng)、干燥、無強(qiáng)腐蝕環(huán)境,露天安裝加防護(hù)裝置,避免陽光直接照射;
Precautions for PT500-540 TTL digital pressure transmitter
Product power supply 3.6vdc (range: 3-5vdc);
It is strictly prohibited to use hard objects (such as screwdriver, finger, iron nail, etc.) to make the pressure core body under pressure measurement output;
The power and signal wires shall be correctly wired according to the specifications of the ordered products;
When the product is installed, the stressed part is "process connection hexagon wrench position", and the wrench specification corresponds to hexagon;
It is strictly prohibited that the medium temperature, pressure range and excitation voltage of the tested system exceed the rated use range of the transmitter;
Pay attention to protect the outgoing cable of the transmitter. When the span is too large on site, it is recommended to use metal pipe for protection or overhead;
The pressure transmitter is a precision measuring instrument, do not impose impact or smash to avoid damaging the core;
The product is installed in a ventilated, dry and non corrosive environment, and installed in the open with protective devices to avoid direct sunlight;