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Wireless Transmitter Silicon-on-Sapphire, Long Term Reliability

PX921

Wireless Transmitter Silicon-on-Sapphire, Long Term Reliability | PX921

£820.00 PX921-100GI

CE RoHS
  • Silicon-on-Sapphire Sensor Assures High Stability and Repeatability
  • Low Power Radio Transmitter Built-in with Range up to 500 Feet
  • High Accuracy 12 bit
  • No License is Required
  • IP65/NEMA 4 Stainless Steel Body
  • Solid State Reliability
  • High Shock and Vibration
Wireless Sensors, Transmitters, Receivers, Meters & Controllers - View related products

Description

OMEGA’s PX921 Series Wireless Transmitters are designed for safe operation in tough industrial installation - without the need for hard wiring! The PX921 operates by radio telemetry. A low power RF transmitter safely transmits the signal up to 500 feet to a receiver / retransmitter where it is converted into a 4-20 mA signal. Rugged stainless steel construction featuring S.O.S. technology with a custom IC amplifier give the PX921 series high stability, low drift and long life. SOS construction uses very stable solid state silicon strain gages on a Sapphire carrier which is glass bonded to a titanium diaphragm. This combination provides a very durable transducer which has excellent stability over a wide temperature range. Additionally, the titanium diaphragm and Stainless Steel wetted parts provide maximum durability and corrosion resistance to harsh industrial chemicals.

SPECIFICATIONS
(PX921 TRANSDUCER)
Excitation:
    Internal Battery: 10.5 to 15 Vdc (not supplied)
    External Supply: 10.5 to 30 Vdc
Output:
    Local Test Voltage: 0.5 to 2.0 Vdc FS
    Data Transmission: Serial bit stream
    Data Speed: 4800/9600 baud
Accuracy:
    Resolution: 12 bit ADC
    Linearity and Hysteresis: 0.3%
Sensing Element: 4 active-arm bridge using Silicon-on Sapphire thin-film elements
Operating Temp Range: -20° to 80°C (-4° to 176°F)
Compensated Temp Range: 0° to 80°C (32° to 176°F)
Media Temp Range: -40° to 120°C (-40° to 248°F)
Thermal Effects: (Over the compensated range)
Span: ±0.03% FS/°C
Zero: ±0.02% FS/°C
Proof Pressure: 1.5 times rated pressure will not cause changes in performance beyond the specified tolerance
Wetted Parts: 17-4 PH and 304 Stainless Steel and Titanium Diaphragm
Body: 300 Series Stainless Steel, sealed to IP65 (NEMA 4)
Electrical Connection: Internal Screw Terminals via gland
Pressure Port: ½ NPT Male
Weight: 1.2 kg (2.65 lb) maximum
  (PX921 RECEIVER)
Input:
    Data Transmission: Serial bit stream from PX921
    Data Speed: 4800/9600 baud
Output:
    Analog: 4 to 20 mA dc
    Load Driving: 1500Ω maximum
Accuracy:
    Resolution: 12 bit DAC
    Linearity and Hysteresis: ±0.3% FS
Body: Polycarbonate enclosure sealed to IP65 (NEMA 4X)
Excitation: 10.5 to 30 Vdc UHF Radio Transmitter/Receiver:
Carrier Frequency: 418 mHz
Modulation Type: FM


OPERATION:
The PX921 pressure transmitter converts pressure measurements to a digital code which is processes by the onboard microcontroller. The microcontroller generates a coded data frame in accordance with the protocol. This frame is then transmitted by UHF to the PX921-R where it is decoded, validated and converted to an analog 4 to 20 mA signal. This signal can then be transmitted and interface with all standard 20 mA loop instruments.

DATA TRANSMISSION:
Data is transmitted as a bit stream data frame using asynchronous protocol. a random delay between transmissions minimizes collisions between adjacent streams. Data error detection is employed to allow error free operation in high interference environments. Indication of receipt of uncorrupted data is provided on the PX921-R unit.

RADIO LICENSE:
No license is required with this equipment. Data transmission is via a radio transmitter operating at a designated low power UHF telemetry frequency. It operates in the 418 MHz region @ 0.25 mW.

INSTALLATION:
The PX921 is simple to install and does not require additional configuration tools. Once the PX921 has been connected to the process fitting, configuration is easily carried out by setting a series of miniature switches which are under the cover of the transducer. At this stage it is possible to check the calibration of the unit locally by measuring the voltage across tow test points, which can then be adjusted with the zero and span trimmers if required.

POWER SUPPLY Units may be powered by either an internal battery (10.5 to 15 Vdc) or by an external supply voltage (10.5 to 30 Vdc). In battery mode, a duty cycle power saving system is employed to extend battery life.
Place Order(Specify Model Number)
Part Number/ Desc.
Qty
RoHS
Description
PX921-30VACI Star
£820.00
Availability: 12 weeks
RoHS compliant
0-30 inches of Mercury wireless vacuum transmitter with 1/2 Male NPT male fitting (PX921-R required)
PX921-005GI Star
£820.00
Availability: 12 weeks
RoHS compliant
0-5 psig wireless pressure transmitter with 1/2 Male NPT male fitting (PX921-R required)
PX921-010GI Star
£820.00
Availability: 12 weeks
RoHS compliant
0-10 psig wireless pressure transmitter with 1/2 Male NPT male fitting (PX921-R required)
PX921-015GI Star
£820.00
Availability: 12 weeks
RoHS compliant
0-15 psig wireless pressure transmitter with 1/2 Male NPT male fitting (PX921-R required)
PX921-030GI Star
£820.00
Availability: 12 weeks
RoHS compliant
0-30 psig wireless pressure transmitter with 1/2 Male NPT male fitting (PX921-R required)
PX921-060GI Star
£820.00
Availability: 12 weeks
RoHS compliant
0-60 psig wireless pressure transmitter with 1/2 Male NPT male fitting (PX921-R required)
PX921-100GI Star
£820.00
Availability: 1 week
RoHS compliant
0-100 psig wireless pressure transmitter with 1/2 Male NPT male fitting (PX921-R required)
PX921-150GI Star
£820.00
Availability: 12 weeks
RoHS compliant
0-150 psig wireless pressure transmitter with 1/2 Male NPT male fitting (PX921-R required)
PX921-200GI Star
£820.00
Availability: 12 weeks
RoHS compliant
0-200 psig wireless pressure transmitter with 1/2 Male NPT male fitting (PX921-R required)
PX921-300GI Star
£820.00
Availability: 12 weeks
RoHS compliant
0-300 psig wireless pressure transmitter with 1/2 Male NPT male fitting (PX921-R required)
PX921-600GI Star
£820.00
Availability: 12 weeks
RoHS compliant
0-600 psig wireless pressure transmitter with 1/2 Male NPT male fitting (PX921-R required)
PX921-1KGI Star
£820.00
Availability: 1 week
RoHS compliant
0-1,000 psig wireless pressure transmitter with 1/2 Male NPT male fitting (PX921-R required)
PX921-1.5KGI Star
£820.00
Availability: 1 week
RoHS compliant
0-1,500 psig wireless pressure transmitter with 1/2 Male NPT male fitting (PX921-R required)
PX921-3KGI Star
£820.00
Availability: 12 weeks
RoHS compliant
0-3,000 psig wireless pressure transmitter with 1/2 Male NPT male fitting (PX921-R required)
PX921-6KGI Star
£820.00
Availability: 11 weeks
RoHS compliant
0-6,000 psig wireless pressure transmitter with 1/2 Male NPT male fitting (PX921-R required)
PX921-10KGI Star
£820.00
Availability: 12 weeks
RoHS compliant
0-10,000 psig wireless pressure transmitter with 1/2 Male NPT male fitting (PX921-R required)
PX921-15KGI Star
£820.00
Availability: 12 weeks
RoHS compliant
0-15,000 psig wireless pressure transmitter with 1/2 Male NPT male fitting (PX921-R required)
PX921-R Star
£615.00
Availability: 11 weeks
RoHS compliant
Reciever/Retransmitter with 4-20 mA output (one required for each PX921 transmitter)
All amounts shown in EUR, GBP, or USD
Note: Metric Ranges Available - Consult Engineering