General information about ADTC-625DS Diezoresistive Silicon Intelligent Circuit Board
ADTC-625DS Diezoresistive Silicon Intelligent Circuit Board replaced the original 4~20mA analog board. With the main body of Microcontrollers CPU, ADTC-625DS is capable to do logical operation and programming. It combines analog and digital circuit in one machine, so is able to output analog signal as well as digital signal. Parameters configuration and compensation of transmitters can be done by buttons on LCD module and internal debugging program. ADTC-625DS supports standard diffused silicon, strain gauge,piezoresistive ceramic pressure sensors. It is suited for ADTC-625DShousing.
1.Two wires working mode provides sensors with two exciting ways – constant current and constant voltage.
2. Calibrating as per full scale realizes bulk production
3.Easy to do temperature compensation, under -20~70℃ the complete machine accuracy better than 0.5% (including accuracy of sensors)
4.Three points calibrating, complete machine accuracy better than 0.2%. Multi-point calibrating is available as required.
5.AD accuracy > 20 bits, DA accuracy > 16 bits;
6.span can be changed on-site by LCD module buttons without standard pressure source
7.Small signal wiping off and reset function
8.LCD head is available to use once connected with sensor, free from calibration. And the head is dismountable, customers could equip LCD indicator or not.
Technical specification of the device:
Supply power:DC9-32V (DC 24V is suggested)
Constant current excitation:0.4mA(suitable for diffused silicon, strain gauge sensors)
Constant voltage excitation:2.5VDC(suitable for piezoresistive ceramic pressure sensors)
Displaying and bits:LCD with backlight, displaying 5 bits, and 4 decimal places
Displaying units:Ten displaying units as KPa, Pa, MPa, mmH2O, mH2O, mbar, bar, PSI, M,%
Temp. compensation accuracy:-20~70℃ complete machine accuracy is better than 0.5% (including accuracy of sensor)
Linearity accuracy:Complete machine linearity is better than 0.2% (Multi-point calibrating is available as required)
Circuit protection Measurement:surge current protection, reverse power protection
Circuit design:Intrinsic safety
Communication Protocol:Private protocol
Adjusting method:by buttons on LCD head or program on pc
Dimensions:OD=52.4mm, Mounting hole pitch=44mm (suited for pressure and level transmitter in JT2088L housing)
Motherboard buttons operation:reset, lower range calibration(zero drift under pressure source), upper range calibration (full scale calibration)
LCD head buttons operation:changing span units, decimal place, output features, changing damping time, currant fixing, write-protection,factory reset and zero clearing