E+h secondary meter repair pH transmitter secondary display repair cpm253-mr0005

PH Transmitter CPM253-MR0005 Germany E+H It's a standard pH/ORP Transmitter , For analog and digital Memosens Of sensor . With continuous rationality 、 Measurement process and sensor detection , Increase operability . No matter how you choose from a large number of hardware and software modules , For example, relay and bus communication , It can adapt to measurement tasks . It also allows the transmitter to be upgraded at any time , Its simple menu and factory calibration make the configuration and operation convenient and fast .

PH Transmitter CPM253-MR0005 Germany E+H advantage ：

Higher operability ： Continuous process inspection system , Custom alarm settings , Optimization of the Memosens The interface can realize the sensor connection .

Self monitoring ： The sensor inspection system is used for pH calibration , Calibration authenticity check .

Easy to operate and maintain ： Intuitive user interface , Pre calibration Memosens The sensor supports hot plugging , Direct manual contact control .

Reduce maintenance effort ： Start the automatic cleaning function through the alarm or limit switch （ Use Chemoclean）.

The main reasons for the stagnation of measured values are as follows ：

The sensor is contaminated , Or the sensor is not immersed in the medium

Sensor fault

Process error ( for example ： Through the control system )

Rationality check ：

Usually , With the same pH Value calibration . therefore , When performing the next calibration , The transmitter regards the setting value of the last calibration as the default value . When the calibration fluid is changed by mistake during calibration ( for example ： First use pH 4 Calibration solution for , Subsequent use pH 7 Calibration solution for ; Instead of using pH 7 Calibration solution for , Subsequent use pH 4 Calibration solution for ), The rationality check ensures that the calibration results are reasonable .

Current output setting ： Large output range , And still need to ensure high-resolution output within the range , You can set the current output through the table . You can use bilinear and square root curves .

The current input of the transmitter has the following two functions ：

When the main flow is lower than the lower limit of flow , Turn off the controller flow monitoring function

The two functions of controller feedforward control can be used at the same time .

Neutralization reaction controller ： Solution neutralization reactions require a controlled response , A single P(ID) The response cannot satisfy . The transmitter will have two P(ID) The controller is used as the neutralization reaction controller .

Process control precautions ：

Different alarms are required for applications and operators . therefore , The transmitter can be configured for each erroneously set transmitter fault signal contact and error current . This method can suppress unwanted or unexpected alarm signals . Four contact switches can be set , Used as limit contact ( The same applies to temperature )、P(ID) controller 、 Or cleaning function . Direct manual contact setting ( Through menu settings ), The limit value can be viewed quickly 、 Control contact and cleaning contact . The deviation can be corrected quickly .