DSA3217 and DSA3207 modules require 28 ± 4 Vdc at 10 VA.
DSA3016 modules are powered by the DSA3016 enclosure
DSA3218 modules with an optional heater require 28 ±4 Vdc at 35 VA.

Control pressures are used to switch the valves in a module to one of the standard operating modes: Zero, Operate, Calibrate, and Isolate. Electronic signals are not required to switch these valves.

Each module requires two or three control pressures to operate the valves, depending on the valve logic. ZOC16, ZOC17 and all DSA modules require three pressures. Two of the pressures control the normal valve modes. The third pressure controls a separate purge valve.

The different modes of operation are obtained by applying the control pressures in a logical sequence. Truth Tables may be found in the appropriate module hardware manual that show the logic required for proper operation.

All ZOC16, ZOC17, and DSA modules have four way valves for each sensor. Application of a control pressure causes a piston in each valve to compress an o-ring, forming an air tight seal. All of these valves are capable of, and have been tested to, a minimum of one million operations.

In some cases, yes. For DSA modules, a single control pressure may be used for "Zero Calibrations" Also, CTL 1 and CTL 2 may be applied from the same source to switch the module into the Calibration mode.

All DSA series, ZOC16, and ZOC17 modules are" normally open" valves. That is, no control pressure is required to put the module in the Operate mode. Control pressures are required to switch the valves to the other modes of operation. The control pressure used for these modules must be 90 to 120 psi depending on the pressure range of the module.

In order to prevent damage to the valves and sensors, the control pressures for all modules must be "Instrument Grade". For more information, please refer to ISA Specification ISA-S7-3.

Software upgrades are available from Scanivalve Corp. A detailed procedure may be found in the DSA3200 Series Software Manual, which is also available for download from this website. For more information on updating software for these modules, contact Scanivalve Corp, Product Service Department.

Scanivalve Corp keeps a record of the coefficients for each module generated in the most recent calibration performed at Scanivalve Corp. These coefficients can be obtained at no charge by contacting Scanivalve Corp, Product Support Dept.

DSA modules should be re-calibrated at a six month interval for the best accuracy. Scanivalve Corp provides a utility program for customers who can perform their own calibrations. This program is called PressCal and may be downloaded from this website at no charge.

The IP Address in a DSA3200 series module may be changed by a user. The IP address is stored as a variable in the operating system. This variable can be changed only by using the RS232 connection. A procedure for this may be found in the DSA3200 Series Software Manual.

Verify that the Ethernet cable is the correct cable for the connection. A "straight wired" cable must be used if the Host computer is connected to the DSA module through a hub. For direct connections from a Host to a DSA module, a "cross wired" cable must be used.

The Host computer must have an IP address specified to be in the same class as the DSA module. For example:  if the DSA module has an IP address of 191.30.5.100, the Host computer must have an IP address of 191.30.80.sn.