Scanivalve DSA 3000 Series, Инструкция по эксплуатации и обслуживанию

Страница: 7 / 43

GENERAL DESCRIPTION
The Digital Sensor Array is a stand alone temperature compensated electronic pressure scanner which can
accept up to 16 pneumatic. Each Digital Sensor Array incorporates 16 individual, temperature
compensated, piezoresistive pressure sensors with an A/D converter and a microprocessor to create an
intelligent pressure scanner. Each pressure sensor is characterized for pressure and temperature from 0 to
59 C (DSA3000 Series) or 0 to 69 C (DSA3200 Series) . This information is stored in EEPROM memory in
o o
the module. The DSA 3018/3218 may also include a optional Thermal Control Unit which will maintain the
core module at a temperature of 20
E
C (other temperatures may be set to meet customer requirements).
This electronic pressure scanning module is specifically designed for use in applications where long
calibration intervals are required and ambient temperatures can vary below 0
E
C.
The DSA 3017/3217/3018/3218 sensors are arranged in blocks of eight(8). Each block of eight sensors has
its own individual calibration valve. This valve has four modes of operation:
(1) Operate
(2) Calibrate
(3) Purge
(4) Isolate
The modes are selected by applying control pressures in a predetermined logical order. The Digital Sensor
Array calibration valve utilizes "Normally Px" valve logic where the valve defaults to the operate mode when
no control pressures are applied.
The DSA 3017/3217/3018/3218 modules are manufactured in a 16 channel model, a 16 channel module with
individual references, an 8 channel “true differential” model, and a 16 channel absolute model.
The DSA 3017/3217/3018/3218 modules are powered by a n28Vdc.
3