Pressure Systems 9022 - Manual (Page 28)

Pressure Systems, Inc. NetScanner™ System (9016, 9021, & 9022) User’s Manual
www.PressureSystems.com 2 - 11
Warning: Always ensure that the Model 9021/9022 power is OFF before
connecting or disconnecting external transducers.
Warning: Improper electrical connections between the Model 9021/9022 and
external transducers can result in permanent damage to the scanner and the
external transducer.
2.3.7 9021 and 9022 Transducer Installation
Models 9021 and 9022 interface to twelve external transducers or signal sources. Although this
module is intended primarily for use with the Pressure Systems Model 9400, 9401, and 9402 All-
Media Transducers, it may also be used with many third party transducers with suitable analog
outputs. When using the 9022 with third party pressure sensors that lack a temperature output
signal, you must short the temperature signal input (pin D of the circular connector) to its
reference line (pin C of the circular connector). This may be done directly on the connector.
Transducers should be installed to the 9021/9022 as described on the following pages.
The 12 volt transducer supply line is fuse-protected. The 9021 modules have a green LED at the
bottom center of the case, indicating the presence of 12 volt power to the external transducers.
The indicator LED is not present on the 9022.
2.3.7.1 Installation of 9400, 9401 and 9402 Transducers
9400, 9401, and 9402 transducer cables are typically ordered from Pressure Systems pre-wired
for use with the 9021/9022. If it is necessary to fabricate interface cables to interface the Series
9400 transducer to the 9021, the diagram in Figure 2.4 should be used. The 9021 makes use of
9-pin D-shell mating connectors. The 9022 uses circular (military) style connectors. See Figure
2.4a. Additional wiring diagrams can be found in Appendix C.