MAMAC - Suction Pressure Transducers
· 100%
solid state, micro-machined, glass-on-silicon,
ultra-stable capacitance sensor
·
· Up
to
300% overpressure without zero shift
· Up to
500% burst pressure
· Up
to
3 field selectable ranges in
single unit
· Wide
12-40 VDC/12-35 VAC unregulated supply voltage
· Two
temperature compensated output versions, 4-20 mA
2-wire or field selectable 0-5 VDC/0-10 VDC
· NIST
traceable calibration
· Rugged NEMA 4 (IP-65)
enclosure with external mounting bracket
· Short
circuit and reverse polarity protected
· Conforms
to EMC standards EN50082-1/EN55014/EN60730-1
The PR-265 incorporates sophisticated integrated circuits and a new fused silicon monolithic cavity pressure sensor to not only provide a high-level, fully-conditioned and temperature compensated output, but also to offer up to three (3) field selectable pressure ranges in one unit. The field selectable feature eliminates costly inefficiencies by providing a single unit which can be configured to cover all the pressure ranges for a particular application. For instance, 25.0, 50.0 and 100.0 psig in one unit. The 316L stainless steel monolithic pressure cavity not only provides media compatibility for most of the applications, but also offers a leak-proof solution for today’s environment conscious customers. Two industry standard output versions are available, 4-20mA 2-wire loop or field selectable 0-5 VDC/0-10 VDC. Wide 12-40 VDC or 12-35 VAC unregulated supply voltage and a broad 0ºF - 180ºF compensated temperature range ensures compatibility to most of the applications. Rugged NEMA 4 (IP-65) enclosure, gasketed cover, external mounting bracket, fully temperature compensated NIST traceable accuracy and a liberal two year warranty are some of the features which make the PR-265 the industry’s most reliable, rugged, and economical pressure transducer.
SPECIFICATIONS:
|
ACCURACY*:
± 1% FS Maximum Pressure: 300% Burst Pressure: 500%
Supply Voltage:
12-40 VDC 12-35 VAC (VDC output units only)
Supply Current:
VDC Units - 10 mA max. mA Units - 20 mA max.
Enclosure:
18 Ga C. R. Steel NEMA 4 (IP-65)
Finish:
Baked on enamel-PMS2GR88B
Conformance:
EMC Standards EN50082- 1(1992) EN55014(1993)/EN60730-
1(1992)
*Includes non-linearity, hysteresis and nonrepeatability |
Compensated Temp Range:
0 °F -180 °F (-18 °C-82 °C)
T. C. Error:
±0.025%/° F (.03%/°C) Media Compatibility: Liquid/gases compatible to 316L stainless steel Port Connection: 1/8” NPT
Environmental: 10-90%RH
Non-Condensing
Termination:
Unpluggable screw terminal block
Wire Size:
12 Ga max.
Load Impedance: 3K
ohms max. at 40 VDC (mA output units) 1K ohms min. (VDC
output units)
Weight:
1.0 lbs. (.45 kg) |
ORDERING INFORMATION: PR-264-
|
R1 (psig) 0 TO 30 Inch Hg R2 (psig) ± 15 |
mA (4-20 mA 2-wire) VDC (0-5 VDC or 0-10 VDC field selectable |
Example: PR-265-R1-mA: With R1
Range which has three(3) field selectable range options and 4-20 mA
output.
CAUTION: Do not use on oxygen service, in explosive/hazardous
environment or with flammable/combustible media.
The PR-265 incorporates sophisticated integrated circuits to not only provide a high level, fully conditioned and temperature compensated output, but also to offer field selectable flexibility which was unheard of in the industry. The PR-265 offers up to three field selectable pressure ranges in one unit. In this way, a customer does not need to know the exact pressure range prior to selection. A unit can be field configured for the desired pressure range in the field. With fixed range units, in case of engineering error or incorrect selection, the only solution is expensive field recalibration or time consuming product exchange or replacement. Similarly, numerous units have to be kept in stock as spares to cover all ranges in case of field failure. The PR-265 with the field selectable pressure range feature, eliminates above mentioned costly inefficiencies. A single unit can be configured to cover all the pressure ranges in a particular application thereby eliminating any possibility of incorrect range selection. Additionally, one unit can be kept in stock and, in the event of a failure, it can be field configured thereby eliminating the need to stock numerous fixed range units. (For a complete listing of all the ranges available, please see the ordering information section on page three.)
On VDC output units, two additional field selectable options are available: dual outputs 0-5 or 0-10 VDC, and dual unregulated supply voltages 12-35 VAC or 12-40 VDC. By merely moving a shorting plug, one can select the desired output for the specific application. As far as supply voltage is concerned, the unit automatically configures for AC or DC and no field selection is necessary. Another feature is that the output is fully protected from short circuit to ground, or if the supply voltage is applied by mistake to the output.
Past experience demonstrates that field related wiring problems do occur. Instead of denying this fact, the protection circuit is designed in to ensure trouble-free start-up. The VDC output unit is also designed to handle low impedance circuits. In fact, the unit can drive up to 1K ohms minimum. In this way, multiple controllers, indicators, or other devices can be paralleled to the output without performance degradation.
The mA output units can function over a wide unregulated supply voltage range: 12-40 VDC without any effect on calibration or performance. The unit has reverse polarity protection built in. As a result, it is next to impossible to damage the unit by mis-wiring. By using sophisticated low drop-out voltage regulators and CMOS integrated circuits, the mA output unit can drive very high output impedance. In fact, with only 12 VDC supply, the unit can drive 400 ohms. At 40 VDC, the unit is capable of handling up to 3000 ohms load. In this way, the output loop can be tied in series to multiple controllers, indicators, and other devices without degrading the performance.
Automated NIST traceable pressure controllers and precision pressure sensors are utilized to calibrate and certify the PR-265. Calibration data on each unit is archived digitally for SPC and QC purposes. All automated calibration systems are networked and data is available on-line to numerous individuals at the same time. In this way, extremely high standards of quality and calibration integrity are maintained. Each unit is individually temperature compensated in an environmental chamber. The temperature compensation data is also digitized and archived for future reference purposes. Compensating each unit individually ensures that published specifications are adhered to.
The PR-265 incorporates a rugged NEMA 4 (IP-65) fully gasketed, dust proof and splash proof enclosure. The enclosure has an external mounting bracket to facilitate field installation. A 1/2” (.875"/22.25mm dia.) knock-out for conduit connection is also provided. A liquid tight cable connector is also supplied if the unit is not being hard wired. Once installed, the enclosure maintains its environmental rating and protects the electronics and the sensing element from condensation, corrosive contaminants and other environmental pollutants. The unit also has additional features for ease of installation including unpluggable terminal block, easily accessible zero and span trimmers, and conveniently located shorting plugs for field selection.