The Model ZOC23B is similar to model ZOC22B electronic pressure scanner. The pressure sensor and calibrator microvalves package has been divided into 4 remote modules, each containing 8 pressure sensors which may be duplexed* to read 16Px (pressure inputs). The 4 remote pressure sensor modules are on umbilicals which connect into the amplifier multiplexer unit. Each module has its own reference pressure, calibration tubulations, and calibration valving. This allows the remote pressure sensor modules to be multi-ranged.
An integral "duplexing" valve is available to allow the ZOC23B's 32 sensors to service up to 64 input pressures. The integral calibration valve has four modes of operation: operate, calibrate, purge, and leak test; each activated by applying the appropriate pneumatic control pressure. This calibration valve allows the ZOC sensors to be automatically calibrated while on-line.
Three versions are available:
ZOC23B/32Px - 32 Px inputs each with its own dedicated sensors
ZOC23B/32PxX2 - 64 Px inputs duplexed* between 32 sensors.
ZOC23B/32Px - Valveless (No calibration valve)
Applications
The ZOC23B electronic pressure scanner is specifically designed for space-constrained use, such as inside very small supersonic wind tunnel models. The remote pressure sensor modules can be mounted in any position to fit where no other pressure scanners can be used. They can be used inside flaps and control surfaces of flight test airplanes, where it is important to measure high frequency turbulent flow. The small size makes it possible to locate the remote modules very close to the pressure orifices to maximize frequency response. This is the same reason that makes the ZOC23B useful in oscillating model research. When the ZOC23B is used for flight test it must be installed in a thermostatically controlled heater jacket.
The ZOC23B module is designed to be used with Scanivalve's Module Address Control Unit (MACU2) which generates address signals for ZOC23 operation. It can also be used with a customer's "in-house" data system.
* Duplexing shares 2Px inputs with one pressure sensor. This doubles the usefulness of a ZOC22B module without increasing the cost or the space needed for module installation.
Px = Pressure Input
