Description: The PSI-1 is a low-cost, temperature compensated, signal conditioned pressure transducer that can meet the needs of many industrial pressure data acqusisiton applications. The PSI-1 is offered in eight full scale ranges from 5 psi to 1000 psi. The unit can be provided with a 4 to 20ma process loop output (PSI-1-ma model) or 1 to 6Vdc amplified output (PSI-1-Vdc model). The PSI-1 is machined from 316 stainless steel and utilizes a rugged and very stable silicon piezoresistive sensing element. All wetted parts are 316L stainless steel providing excellent media compatibility. One end of the sensor is provided with pipe threads with wiring projecting from the other. See the Data Logger Selection Guide for help with locating the appropriate instrument for your inputs.

Data logger Interface:

PSI-1-mA (4-20mA Output Version)

The PSI-1-mA provides a linear 4 to 20mAdc output corresponding to 0 to 100% of Full Scale of the transducer. This 4-20mA output can be directly connected to any of the Logic Beach data loggers analog inputs configured in current mode. Scaling and offset to PSI units as well as additional data reduction, alarming, conditional logging, etc is readily handled with the powerful HyperWare software utilized in programming of the Logic Beach logger.

PSI-1-Vdc (1 to 6 Vdc Output Version)

The PSI-1-Vdc model provides a linear 1 to 6 Vdc output corresponding to 0 to 100% of Full Scale of the transducer. This Vdc output can be directly connected to any of the Logic Beach data loggers analog inputs configured in a medium range voltage input mode. Scaling and offset to PSI units as well as additional data reduction, alarming, conditional logging, etc is readily handled with the powerful HyperWare software utilized in programming of the Logic Beach logger.

Logger Compatibility:

These sensed signals can be directly connected to the ModuLogger "Mini" analog inputs, the ModuLogger System Base or MLIM-1 Interface Modules and/or the HyperLogger™ HLIM-1 Interface Modules input channels.

Sensor Power / Excitation:

The unit can be powered from a DC source in the range of 10 to 30Vdc and is quick to stabilize after application of power. Due to its quick stabilization after power-up, the unit can be powered on just prior to taking a reading, sampled, then powered off to conserve logger battery energy. The unit can be powered from the ModuLogger, Mini, or HyperLogger™ system batteries stepped up to the 10, 15 or 24 Vdc level by the Logic Beach PSM-2 Power Supply Module. The PSM-2 can be controlled from the logger to perform the above mentioned battery conserving cycled power strategy.

PSI-1 Specifications:

Operating Temperature, compensated:	-10 to 85C
Operating Temperature	-40 to 85C
Vibration Withstand:	10G at 20 to 2000 Hz
Shock	100G for 11mSec
Lifetime	1 million cycles min
Supply Voltage (both models)	10 to 30Vdc
F.S. Pressure Ranges	5, 15, 30, 50, 100, 300, 500 and 1000 PSI
Proof /Burst Pressure	3x / 5x
Zero Pressure Offset:	1.0 Vdc +/- 0.05 Vdc (PSI-1-Vdc model) 4.00 mA +/- 0.15 mA (PSI-1-mA model)
Full Scale Output:	6.0 Vdc +/- 0.05 Vdc (PSI-1-Vdc model) 20.00 mA +/- 0.2 mA (PSI-1-mA model)
Response Time (10 to 90%)	100uS
Combined linearity & Hysteresis	typical: 0.15% of FS min/max: +/-0.3%FS
Temp effect on FSO	typical: 0.5% of FS min/max: +/-1.5% of FS
Temp effect on Offset:	typical: 0.5% of FS min/max: +/-1.5% of FS
1 year stability of Offset / Span	0.1% of FS
Probe Dimensions	0.9" dia, 4.5 " long
Electrical Connection:	Jacketed multi-conductor cable; (specify length at time of order). Gage parts are vented for apx 24". Contact factory for details of cable extension.
Process Connection:	1/4-18 or 1/8-27 NPT (male pipe thread) (contact factory for other available options)
Pressure Type:	Gage: (avail for 5-500 PSI range parts) Absolute: (avail for 15 to 5000 PSI range parts) Sealed Gage: (avail for 500 to 5000 PSI range parts, sealed during manufacture with atmospheric pressure on back of sensing element)

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