ATC770 Microprocessor-Based Pressure/Process Controller 11
Sampling time: 50 ms typical.
Display Update Time: 400 ms.
Engineering Units: Peel-off labels.
Calibration Mode: Field calibrations (zero and span) are applicable for both strain gage and linear
input. Moreover it is possible to delete the field calibration done by the end user and to restore
original factory calibration values.
Input Resolution: 4000 Counts
Full scale value Resolution
10 / 4000 1 digit
4002 / 8000 2 digits
8005 / 20000 5 digits
20010 / 40000 10 digits
40020 / 80000 20 digits
80050 / 99950 50 digits
Decimal Point: Settable in any position of the display.
2.4 REMOTE SET POINT INPUT SPECIFICATION
Remote Set Point Input: Selectable between the ranges 0-10 VDC, 0-20 mA, or 4-20 mA by jumper
and instrument configuration.
Input Protection: open circuit for 4-20 mA input (excluded for 0-10 VDC and 0-20 mA inputs). Up
or down scale keyboard programmable.
NOTE: This input is not isolated from the main input. A double or reinforced insulation between
instrument output and power supply must be guaranteed by the external device.
Input Impedance:
<10 Ohm for linear current input
>165 Kohm
Sampling Time: 1000 ms.
Display update: At each sample.
Input Resolution with Linear Input: 4000 counts.
Low/High Scale Values: Set from 0 to pressure input full scale value with the same resolution and
decimal point position as Pressure unit.
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