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SM39PCRD Digital cable pressure transmitter
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Product Description
1.Characteristics
- Pipeline pressure test, has been widely used in major oil and gas and other industrial pressure testing field;
- Explosion-proof, fully sealed waterproof design;
- Signal synchronization output 4 ~ 20 ma, RS485, the scene is optional;
- Installation direction adjustable: joint through the articulated or access field pipeline valve, adjustable direction.
2.Technical indicators
- Working conditions: temperature, and 40 ℃ or less Tamb + 65 ℃ or less; The atmospheric pressure: 80 kpa to 110 kpa. Humidity: 5% RH to 95% RH
- Power supply: 24 VDC
- Measuring principle: the pressure resistance type
- The output signal: 4 ~ 20 ma & RS485 optional; Four and a half LCD display.
- Case material: aluminum, protection grade: IP67
- Contact medium material: 316 l
- Electrical connections: NPT1/2 (F), M20 * 1.5"
- Process connections: NPT1/2 "(M), R1/2" (M), M20 * 1.5 (M), connector: 1/2 "NPT (F) (M) - R1/2"
- Range: 0 ~ 0.16, 0.4, 0.6, 1.0, 1.6, 2.5, 4, 6, 10, 16, 25, 40, 60 mpa (customizable), such as precision grade: 0.5.
- Overall dimensions: 165 * 106 * 130; Weight: 1 kg
- Explosion-proof certification: explosion-proof number: CE18.1519 explosion-proof marks: EXd IIC T6 Gb
3.
Dimensions （In mm. 1mm=0.03937 inches）
3. The installation and connection definition
3.1. All transmitter through digital calibration, have completely different transmitter consistency and interchangeability;
3.2. The installation of pressure transmitter, need to unscrew header back cover, the cable from the electrical interface to access, according to the connection correctly defined. Wiring is completed, please send back cover screw to ensure waterproof.
3.3. Piping pressure transmitter, corresponding to the valve closed first, and then there are two installation method: (1). The transmitter directly screwing in the valve port; (2) or adapter will live screwing in the valve port, port or transfer transmitter screwing in live head again, the way to increase the articulated or adapter adjustable direction. Installed, open the needle valve type valve is installed confirm no leakage, qualified;
3.4. 8 core wires green definition. (1) - 24 v power supply + 1, 5 feet, 0 v - 2, 6 foot, 3, 7 feet - 485 _a, 4, 8 feet - 485 _b.
Site 485 communication, need access to 1234 feet, 1-2 power supply, communication A - 3-4 B.
Scene 4-20 mA communication, you just need to access 1 to 2 feet.
(2) the main signal wire 4-20 ma, RS485 interface, the need to pay attention to while using RS485 and 4-20 ma digital communication grid number cannot exceed 10. Don't add termination resistors RS485 interface, otherwise it will cause 4-20 ma current jump, 4-20 ma current signal. If only use RS485 signals, there is no limit to the number of parallel, up to and after 255.
Note:
1. The current commercially available passive RS485 converter drive ability is limited, so in parallel quantity is large, the use of the active isolation type RS485 interface.
2. Because of the grid, the board inside the RS485 bus is not set bus matching resistance, no pull up and down the resistance, if the customer USES RS485 interface also do not have to pull up and down the resistance, static level could lead to a bus uncertain, RS485 bus has a wrong data. So customers or system integrator should be on the outside of the bus matching resistance and the resistance to set the bus pulled up and down the static state.
3.5显示面板指示定义
3.6 meter communication basic information site Settings
Also has a built-in instrument protocol. Support MODBUS_RTU agreement, adopt green free software installation technology, using the dynamic link library will automatically extract the needed, so please in the computer antivirus software set the software to white list. To prevent the security software to prevent normal operation of the software.
Software support serial port in the range of 1 to 15, if you are using a USB serial port, please amend the port number to 1 to 15.
Other tested, is currently in use more USB/RS485 converter, inside there are many different kinds of USB conversion chip, now find FDT232 chip converter using devices need to set of drive, otherwise it will lead to the software can't read data transmitter. Settings page is as follows:
FDT232软件的驱动高级设置，在设备管理器中打开，可以看到有一个BM选项，此设置应该改为1，一般软件默认的是15，所以必须要修改次设置才可以正常使用串口。 其他芯片的USB转换器目前没有发现此类问题。
1. Search for port:
Software can automatically search for the machine available port, please select the correct port number, the selection and match the baud rate in the transmitter, click on the search button to search online transmitter, software there are search results suggest the bottom. List the computer all of the available port Numbers, if there is a dynamic plug USB virtual port, you can click on "find a serial port" to update the information.
2. "search transmitter:
Transmitter is to search online, search address range 1-255. The search to tip in the status bar. Search to an early end to search again, please click on the can. Pay attention to select baud rate frequency band. Search only in view of the current set baud rate range.
3. "read all" :
After the search stops software will automatically to first read all the parameters in the transmitter. And continuous reading the state of alarm, real-time measurement and instrumentation, ADC values. Click on the all read all button can also update the current data.
4. "write all" :
All the data modification is finished click on "write" can be saved to the transmitter.
Note that the software blue text box to support customer modify the content above, the red box for the default data transmitter.
Additional information:
Software according to the agreement of customer, has said, according to a separate address said way data frame at the back of the data type show the type of the data,
DEC said decimal data. HEX, hexadecimal data characters represent text characters, is assic yards. Detailed protocols and data need to refer the customer to provide the text of the agreement.
3.7. Panel key configuration
This circuit has three buttons and LCD display window:
7.1面板按键:
M键的功能主要是模式键,是数据和菜单的切换.模式按键在变送器非设置模式下长按会执行主变量清零功能，是否执行需要通过S和Z键来选择。
S键的功能主要是数据加功能。在非设置模式，长按S键会进入有源变送高限设置模式。此时需要注意压力有意义。
Z键的功能主要是数据移位和减功能。在非设置模式长按Z键会进入有源零点设置模式。
在测量模式下，单击M键单击会进入密码设置模式,需要设置密码才能进入设置模式。密码不正确，则变送器会退出到测量模式。
电路板具有有源量程迁移缩放和无缘迁移缩放功能.无源设置需要用户进入组态设置模式.
以下约定按键状态:
S键单击简称为:S Z键单击为:S M键单按为:M
M键长按为ML
S长按为:SL Z键长按为ZL
7.2以下是无源组态面板按键设置流程：
面板布局图：
设置菜单流程图：
在END菜单,按M键退出设置模式，并保存数据。在别的菜单下，长按M键会退出设置模式，但不会保存数据。
图中OUT菜单有两个，其中一个是FIX菜单，一个是输出线性化。
上图设置菜单中,对应的菜单数据意义:
- 有源迁移和主变量清零
进入有源迁移和主变量清零状态时需要在正常工作模式下才能进入。
有源迁移设置时确保压力是有效的。否则变送器的输出就异常了。
主变量清零有范围限制，一般的数值需要在数值0附近或者零位压力附近，限制范围为10%，超过这个范围不会执行清零操作。
3.切换显示器
a、屏幕的主屏显示和付屏显示区有多种显示功能，主屏显示有压力值显示，百分比显示，电流显示三种。
b、付屏显示有温度显示和从机地址显示两种选择。温度值来自于电路板卡上的温度传感器。
显示切换随时可以进行，每次上电以后的显示方式取决于软件在最后保存的时候的模式值，在面板按键上设置的显示模式在下次掉电以后会被清除。
液晶显示屏幕右上方有电池电量显示功能。电池电量共有5个进度条，条数越多表示电池电量越充足。电池电压低于3.0V以后电池会自动切断输出。
本变送器采用双电源系统，除正常的电源供电之外还有一个内置电池供电模式，通过SW开关打开变送器的电池电源，则变送器工作在电池供电模式。比如内置电池容量为2000mA/h时，本机电池供电最长工作时间可达到300小时，大约是12.5天时间。不管是不是内置电池，如果外部电源接通，则仪表会自动优先使用外部电源，并且输出4-20mA.电流信号。
Keyword:
设置
模式
变送器
显示
数据
软件
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rs485
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