ZOC17

ModelTemperature CompensatedElectronic Pressure Scanning Module
Data Sheet No. G447Features• 0 - 750 psid pressure range• Temperature compensated pressure sensors• Dual pressure ranges available• ±.08% full scale accuracy• Scan rates up to 50kHz• On board constant current sensor excitation• Isolate-Purge feature standard
ZOC17IP/8Px Muxless
Pressure Scanner (shown)

General Description

Applications

The Model ZOC17 is a cable-serviced electronicpressure scanner that accepts 8 or 16 pneumaticinputs. Each ZOC17 module incorporates 8 or 16
piezoresistive, temperature-compensated pressuresensors. These pressure sensors are manufactured
in a vibration resistant housing which makes for easy
field replacement, minimizing downtime in the eventof sensor damage. The ZOC17 electronic pressure
scanner also contains a pneumatic calibration valve, ahigh speed multiplexer (50kHz), and an instrumentation grade amplifier.

The ZOC17 electronic pressure scanner is ideal for
flight and turbine engine testing applications whereambient temperatures vary. It is also ideal for other industrial pressure measurement situations where highmeasurement pressures may be encountered (750 psimax.). The ZOC temperature compensated pressure
sensors are more than ten times less sensitive to temperature than typical piezoresistive pressure sensors.
They may be mounted in any position and orientation,
so the units may be installed close to the pressuresources to be measured.

The integral calibration valve allows the ZOC pressure
sensors to be automatically calibrated on-line. The
ZOC17 calibration valve utilizes “Normally Px” valve
logic where no control pressure defaults the valve tothe operate mode.

When further temperature stability is required, aswell as for use below 0°C, it is recommended that theZOC17 pressure scanner be placed in a thermostatically controlled heater jacket, Model ZOC17TCU.

The ZOC17 can be use as an analog scanner integrated into a data system, or it can be used in conjunction with a Scanivalve ERAD4000 or DSM4000
pressure data system. National instruments LabVIEW
VI’s are available for both the ERAD4000 and theDSM4000 to make integration simple.

For those users that want a complete pressure measurement system, The ZOC17/16Px pressure scanner
can be used with either or DSM4000 or RAD4000
pressure data system. These systems convert theZOC17 analog signals to temperature-corrected Engineering Units. The data are then output via Ethernet
TCP/IP or UDP.
For those users that want to integrate the ZOC17 with
their own A/D and data system, both multiplexed andnon-multiplexed modules are available.

ISO 9001:2008 CERTIFIEDLabVIEW® is a registered trademark of National Instruments.

ZOC17 Features and Options
ZOC Calibration Valve Control Pressure
The ZOC17 calibration valves are “Normally Px”
where no control pressure or a loss of control
pressure defaults the ZOC calibration valve to theoperate (sense) mode. 90 psi (120 psi for high pressures) control pressure is required to switch the ZOC
calibration valve into purge, calibrate or isolate mode.
This calibration valve allows the ZOC sensors to be
automatically calibrated on-line.

Purge Feature
Isolate Purge valve is standard with all ZOC17 calibration valves. This valving isolates the pressure sensors from the applied purge pressures. This techniquepermits the safe use of high purge pressures without
damaging the pressure sensors due to high overpressure. The ISO purge valve logic also allows apressure calibration to be performed during the purge
process.

Dual Range
Each group of 8Px (pressure inputs) contains its
own calibration valving and reference, thus a single
ZOC17/16Px pressure scanner can incorporate up to
two pressure ranges for maximum flexibility.

ZOC17 Sensors
The ZOC17 pressure sensors are manufactured ina vibration resistant can with each pressure sensor
having temperature compensating circuits. A constantcurrent excitation is regulated on board the ZOC17module, rather than a constant voltage, thus adding
to the long term stability of the pressure sensors. No
special tools are required for access to the sensors orfor field replacement.
Muxless — The ZOC17 is available in an 8 channel
muxless version (less amplifier and multiplexer). Eachpressure sensor has its own 30-120mV F.S. analog
output that is accessible through the electrical I/O
connector.
Muxless — Amplifier Per Channel (APC) — The
ZOC17 is available in an 8 channel muxless version(less multiplexer). Each pressure sensor has its own
amplifier per channel with nominal ±2.5Vdc output perchannel. 3.0Vdc and 5.0Vdc available upon request.
Muxed — The ZOC17 is available in a 16 channel
muxed version that includes a multiplexer and amplifier. A CMOS level binary address is required to selectthe appropriate channel. The corresponding channel
is then amplified and output at ±0 - 2.5Vdc F.S.or 0 5.0Vdc and 0 - 10.0Vdc F.S. outputs also optionallyavailable.

ZOC Pressure Sensor Module Schematic

Specifications
Inputs (Px):

8 or 16 each .063 inch (1.6mm) 		
O.D. tubulations. Optional
1/16 inch Swagelok fittings.					Full Scale 					Ranges:±10 inch H2O, 1, 2.5, 5, 15, 30, 		50, 100, 250, 500, 600, 750 psid		
(±2.5, 7, 17, 35, 100, 205, 350,700, 1725, 3500, 4200, 5250kPa)
Accuracy:(Including linearity,hysteresis, andrepeatability)

10 inch H2O* = ±.20 % F.S.
1 psid = ±.15% F.S
2.5 psid = ±.10% F.S.
3 psid to 500 psid = ±.08% F.S.
600 to 750 psid = ±.12% F.S.

Sensor Addressing:(Muxed only)

4 bit binary, CMOS level

Full Scale Output:(Muxed)Standard: ±2.5Vdc nominal
Optional: ±5Vdc, ±10Vdc

Full Scale Output:(Muxless)(Muxless APC)
Resolution:±30-120mV per sensor
2.5Vdc per channel (nominal)
3.0 Vdc or 5.0Vdc optional
Infinite

Scan Rate:

50kHz

Temperature
Sensitivity:
Range

ZeroSpan

10 inch H2O.009% FS/°C.007% FS/°C

1 to 750 psid.009% FS/°C.007% FS/°C

Connector Type:

Muxed
Cannon 15 pin MDM-15SL2P
MuxlessCannon 21 pin MDM-21SL2P
APC - DB25P		
Power						Requirements:±15Vdc @ 100mA Nominal Muxed±15Vdc @ 25mA Nominal Muxless±15Vdc @ 2oomA APC
Overpressure
Capability:
10 inch H2O = 2 psi (13.79kPa)(With no damage)1 psid = 5 psi (35kPa)
2.5 - 499 psid (3493kPa) = 200%
500 psid (3500kPa) = 150%
600 psid (4200kPa) = 125%
750 psid (5250kPa) = 100%
Maximum
Reference Pressure:MediaCompatibility:

250 psig (1725kPa)
Gases compatible with silicon,silicone, aluminum, and Buna-N

Weight:

ZOC17IP/8Px (Muxless): 1.5 lbs.
ZOC17IP/16Px (Muxed): 3.2 lbs.		
ZOC17IP/8Px (APC): 1.75 lbs.					Temperature						Compensated Range: 0° to 50°C (Higher compensated 		*10 inch H2O = 25.4 cm H2O = .36127 psiranges available.)
Operating					Temperature:
0° to 70°C standard

Ordering Information
ZOC17 IP / 16Px - 500 psid /Model				
ZOC Valve Logic– IP, Isolate Purge Valvewith Normally Px Valving

Pressure Range
Inputs– 16 Inputs / 16 Sensors (Muxed)– 8 Inputs (Muxless)– 8D / 8 True Differential Sensors

Options– Muxless (mV)
– APC, Amplifier
Per Channel

Dimensions inches (mm)Scanivalve Headquarters
1722 N. Madson Street
Liberty Lake, WA 99019
Tel: 509-891-9970
800-935-5151
Fax: 509-891-9481
e-mail: scanco@scanivalve.com
Printed in USA©
2014, Scanivalve Corp.

www.scanivalve.com
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