Condition:New
Type:Logic ICs
Model Number:2088
Model:PD2088
Item:1
Color Classification:2088 with a silicone rubber shell mask with 10cm lead bare boards 0.56
Renovation and construction content:Hydropower Engineering
1, the two -line intelligentLEDHeader specification (4-20mA)
Outline
Two -line intelligentLEDHeader, microprocessor andTwenty fourPositionADAchieve high-precision instruments. Two lines4-20mACurrent input ,4Bit HighlightLEDShow that the accuracy of plus or minus0.2%.The meter does not need to reprovision the power supply , only by the transmitter ( pressure , weight, temperature, etc. ) output4-20mASignal inputs can be displayed directly ;
By two programming buttons , can be achieved4-20mAEnter the correspondingLEDDisplay , in-1999To9999Scope any adjustments.
Widely used inSuch as: pressure transmitter, power transmitter, temperature transmitters, etc. , can also be used in instrumentation, teaching equipment , power electronics, industrial automation and control equipment, medical equipment , AC-DC power supply, teaching equipment , etc., as DC parameter display components , improve product quality , for the pointer instrument replacement product .
Meter can determine its own variety of units : Temperature (), the percent sign ( % ) , pressure (KPa,MPa) ;
Small Dimensions :PCBBoard positioning hole .
Connection is simple : the first two lines of the table directly with the pressure, temperature , humidity and other output lines of the transmitter can be connected in series .
Can be customizedOrange, blue , emerald greenDigital pipe ;
Technical parameters
1 .Power supply:DC4-20mASignal source , the pressure drop is inserted<3.5V2.Drift :50PPM(Custom made25PPM,5PPM)
3.Display range:-1999-99994.Accuracy : ± (0.2% FS + 1Words)
5 .Working current:1mA - 24mA6.Working temperature :-20prefix = St1 -70
7 .Humidity : ≤85% RH8 .Display character height :0.36,0.56InchLED
9.Dimensions: see below .prefix = o
10 .Two alarm points, below the lower limit or above the upper limit alarm, flashing display(Alarm switch= ON)( Comments1).
11 .Automatic range switching function : automatically move the decimal point position data can be displayed with the most digits , similar to multimeter automatic shift .
For example:
A decimal , enter 1.234 , can be displayed as " 1.234 " ( decimal point automatic range switching = ON) or " 1.2" ( decimal point automatic range switching = OFF).
Two decimal places, enter 1.234 , can be displayed as " 1.234 " ( decimal point automatic range switching = ON) or " 1.23 " ( decimal point automatic range switching = OFF).
2088Bare board price :30;
2088Band shell beltPVCFilm Price:33
Dimensions
2088Transmitters withHirschmann connector with transmitterCabinet table with the mounting panel
Display character height :0.36InchDisplay character height :0.36InchDisplay character height :0.36Inch
Dimensions
For 2088 transmitter Display word height: 0.36 inch Panel size: diameter 38mm Chassis size: diameter 48mm Fixing method: screw fixing the chassis
Description :( Comments1) , Under the independent power of three-wire mode , the alarm can be customized with two actual product output pin , the output optocoupler or relay.
Parameter Description
1: Zero setting : "ZERO" Range-1999-99992: Full scale setting: "FULL" Range-1999-9999
3: Decimal point position: "DOT ",Value "--- ." , "--.-" , "-.-" , ".---"
4: Filtering parameters : "DAP "Scope0-165: Alarm switch : "HILO" Value "ON ""OFF"
6: Lower limit alarm point : "STPL" Range-1999-99997: Limit alarm point : "STPH" Range-1999-9999
8: Lower limit alarm direction : "LDIR"Value "DN" , "UP"9: Limit alarm direction : "HDIR"Value "DN" , "UP"10: Alarm output delay: "DELA" Range0-25011: Automatic range switching: "AUTO" Value "ON ""OFF"
Note:If the user does not specify , does not offer this feature.Alarm direction ,"DN"Is the index value is less than alarm , alarm ."UP" Index value is greater than the alarm point , alarm.
2 ,3: DC4-20mAThree -line header,75mVOr othermVLevel full-scale voltage meter head
If the user has can provide power to the header , or need to measure other large, small value of current or voltage , then mining
With a three -wire connection .There are two practical customizable alarm pin products , optocoupler or relay output .
If the user input signal is very small , such as75mVFull scale ( pressure sensors, etc.) , the first table using a precision op amp amplifies ensure a high enough resolution.
Outline
Reference"Two Line SmartLEDHeader . "
Technical parameters
Power supply:DC2.7V-5VHigherLEDThe brighter , not to exceed5.2V.2.7VCurrent work is about7mA,5VAbout31mA,If you have requirements for power, need to explain .
Other Reference "Two -line intelligentLEDHeader"
Common specifications
4-20mAMeasurement ;0-5VMeasurement ;0-10VMeasurement ;0-36VMeasurement ;0-150VMeasurement ;0-75mVMeasurement.
4: Two-wire DC voltmeter(3V-30V,12V-150VEnter)
The header part of the "two -line intelligentLEDHeader "derivative products , the use of voltage inputConstant current power supply to the meter . This product is different from the low-cost market3Bit products displayed .
The voltmeter wiring simple, just connect the two lines in the table there is reversal protection , reverse does not burn .
The voltmeter can be used for motorcycles, cars and other monitoring battery voltage , battery status grasp . Can also be used for other voltage measurement purposes .
Outline
Reference"Two Line SmartLEDHeader . "
Technical parameters
Electrical workSource:DC3V-30V,12V-150VBoth , constant current7mAPowered by.
Other Reference "Two -line intelligentLEDHeader"
5 ,6,7: AC two wire voltmeter , ammeter head
The header part of the "two -line intelligentLEDHeader " derivative products, use a capacitor step-down principle to solve the supply , because the higher the frequency the smaller the impedance of the capacitor , it is not suitable for use in high-frequency electronic speed control, or other high-frequency components of the occasion, or easy to burn!!!.
Outline
Reference"Two Line SmartLEDHeader . "
Technical parameters
Electrical workSource:AC75V-300V,AC100V-500VBoth.
Other Reference "Two -line intelligentLEDHeader"
Measuring range : Measuring Voltage is working power ;
Measuring current is divided into:0-15.00A,0-50.00A,0-120.0A,0-250.0A, Mandrel transformer access .
User manual
Principle:
The display value (Y) of the header is actually the process of linear conversion between the AD sampling (X) value and the display value (Y).
The table header is calculated according to the formula: y=k*x + b.
Two points are needed to determine k, b. These two points are (zero AD, zero display ZERO), (full scale AD, full scale display FULL).
Therefore, the use of the meter header is divided into two steps: one is calibration, and the other is display setting
The first step: the calibration of the meter head is to save "zero AD" and "full scale AD".
Taking the 4mA-20mA meter head as an example, the calibration method is as follows:
1: The meter head is connected to 20.000mA (4mA) stable current, press S1+S2 keys at the same time to enter the main menu.
2: Press the S1 key, "20NA" ("4NA") appears, and then press the S1+S2 key at the same time to enter the calibration menu.
3: Enter the password "<?xml:namespace prefix = st1 />1234", and press the S1+S2 keys at the same time.
4: The LED display value is one-sixteenth of the current AD sampling value. When the display is very stable, press S1+S2 keys at the same time to save the 20mA (4mA) AD value and exit the calibration menu.
5: 20.000mA corresponds to the "20NA" menu; 4mA corresponds to the "4NA" menu.
Step 2: The display settings are to save "ZERO display at zero" and "FULL display at full scale".
For example: 4mA shows -50.0, 20mA shows 150.0
1: The meter head is connected to 20.000mA stable current, press S1+S2 keys at the same time to enter the main menu.
2: Press the S1 key, "ZERO" ("FULL") appears, and then press the S1+S2 key at the same time to enter the setting menu.
3: Press the S1 and S2 keys (the digit to be set is flashing) to set the value to "-50.0" ("150.0"), then press S1+S2 at the same time to save and exit the setting menu.
4: "ZERO display at zero" corresponds to "ZERO" menu; "Full scale display FULL" corresponds to "FULL" menu.
The first step has been calibrated at the factory, and the second step needs to be set by the user. By default, 4 and 20 are displayed, which is the current value.
Other settings
Decimal point position: "DOT", value "---.", "--.-", "-.—", ".---"
Filter parameter: "DAP", the range is 0-16, if the value jumps too much, increase the value appropriately, the data will be smooth.
Automatic range switching: "AUTO", the value is "ON", "OFF"
