Omega Products PX750-1KGI User Manual

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Page 1

B-229

HEAVY DUTY INDUSTRIAL PRESSURE TRANSMITTERS

GAGE AND DIFFERENTIAL PRESSURE MODELS

Shown smaller than actual size.

SPECIFICATIONS

(For All Models)

Service: Liquid, Gas, Vapor Output: 4-20 mAdc 2-wire Excitation: 12 to 45 Vdc with no load.

See chart for loop resistance (Figure 1). Indication: Optional meter with 1

⁄4",

0-100% scale; accuracy is 2% of span Hazardous Locations: Factory Mutual

(FM) approvals: Class 1 Division 1 and 2, Groups B, C, and D. Dust-ignition proof: Class 2, Divisions 1 and 2, Groups E, F, & G. Suitable for use in: Class 3, Divisions 1 and 2. Indoor and outdoor use. NEMA 4X.

Zero and Span: Continuously adjustable externally Zero Elevation and Suppression: Regardless of output specified, zero elevation and suppression must be such that neither the span nor the upper or lower range value, exceed 100% of the upper range limit. Maximum zero elevation: 600% of calibrated span. Maximum zero suppression: 500% of calibrated span

Temperature Limits: Amplifier: -20 to +200°F (-29 to -93°C) Square Root Amplifier: -20 to 150°F (-29 to 66°C) Element: -40 to 220°F (-40 to 104°C)

Humidity Limits: 0 to 100% RH Volumetric Displacement: Less than

0.01 cubic inches (16cm

)

Turn On Time: 2 seconds — no warm up required

PHYSICAL SPECIFICATIONS

Isolating Diaphragm: 316 Stainless

Steel

Drain/Vent Valves: 316 Stainless Steel Process Flange and Adapter:

Cadmium plated carbon steel standard (316 Stainless Steel Optional)

Wetted O-Rings: Viton

(Flouro-Polymer)

Fill Fluid: Silicon Oil Bolts: Cadmium Plated Carbon Steel Electronic Housing:

Low Copper Aluminum

Paint: Epoxy-Polyester Electrical Connections:

⁄2" conduit with screw terminals and integral test jacks compatible with miniature banana plugs

Weight: 12 pounds (5.44 kg) excluding options

Vibration Effect: 0.05% of upper range limit per G to 200 Hz in any axis

Power Supply Effect: < 0.005% of shift up to 1 inH

20 which can be calibrated out

ACCESSORIES

PX750-M1, linear meter kit,

0 to 100% scale, $250

PX750-B3, mounting bracket kit for flush panel mounting or 2" pipe, $60

FIGURE 1

PX750 Series

5 Models: Gage Pressure Differential Pressure High Differential Pressure Draft-Range Differential Square-Root Output

Starts at

1565

APPROVED

Smart Retrofit

Kit Now Available!

See Page B-234

Field-selectable 1⁄4" or 1⁄2" FNPT Ports. Adaptor included.

LOAD LIMITATIONS

4-20 mA DC

OPERATING

REGION

POWER SUPPLY (VDC)

LOAD

(OHMS)

2150 2000

1500

1000

500

12 20 30 40 45 55

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B-230

DIFFERENTIAL

PRESSURE TRANSDUCERS

HEAVY DUTY GAGE PRESSURE TRANSMITTER

RUGGED NEMA 4X ENCLOSURE

⻬ Stainless Steel

Diaphragm

⻬ High Accuracy:

0.25% of Span

⻬ FM Explosion-Proof

Rating; NEMA 4X Enclosure

⻬ 4 to 20 mA Current

Output

⻬ External Zero and

Span Adjustments

⻬ Compatible with

Any 2-Wire System

SPECIFICATIONS

Accuracy: ±0.25% of calibrated span

(includes linearity, hysteresis and repeatability

Stability: ±0.25% URL for 6-months Temperature Effect at Maximum

Span (e.g. 0 to 100 psig for 0 to 17/100 psig Range): Zero

error = ±0.5% of span per 55°C (100°F); total effect including span and zero errors = ±1.0% of span per 55°C (100°F)

MOST POPULAR MODELS HIGHLIGHTED

To Order

(Specify Model Number)

Lower Range Upper Range Compatible

Model No. Price Gage Pres. Gage Pres. Meters

PX750-30GI $1695 0 to 5 inH20 0 to 30 inH20 DP41-E, DP25B-E, DP3002-E PX750-150GI 1565 0 to 25 inH20 0 to150 inH20 DP41-E, DP25B-E, DP3002-E PX750-750GI 1565 0 to125 inH20 0 to 750 inH20 DP41-E, DP25B-E, DP3002-E PX750-100GI 1565 0 to 17 psi 0 to100 psi DP41-E, DP25B-E, DP3002-E PX750-300GI 1565 0 to 50 psi 0 to300 psi DP41-E, DP25B-E, DP3002-E PX750-1KGI 1565 0 to 170 psi 0 to1000 psi DP41-E, DP25B-E, DP3002-E PX750-3KGI 1699 0 to 500 psi 0 to3000 psi DP41-E, DP25B-E, DP3002-E PX750-6KGI 1699 0 to 1000 psi 0 to 6000 psi DP41-E, DP25B-E, DP3002-E

The OMEGA PX750 Gage Pressure Transmitter brings true precision and reliability to industrial pressure monitoring applications. Process pressure is transmitted through an isolating diaphragm and an oil fill fluid to a central sensing diaphragm. The atmospheric reference pressure is transmitted similarly to the other side of the sensing diaphragm. The displacement of the sensing diaphragm is proportional to the pressure differential across it. In addition to gage pressure, the PX750 can measure vacuums by simply reversing the process connection to the sensing element.

PX750-GI Series

0-5 inH2O to 6000 psig

Starts at

1565

Temperature Effect at Minimum Span (e.g. 0 to 17 psig for 0 to 17/100 psig Range): Zero error = ±3.0% of span per

55°C (100°F); total effect including span and zero errors = ±3.5% of span per 55°C (100°F) (double the specified effects for 30 inH20 range)

Mounting: 1⁄2 NPT on adaptor, 1⁄4 NPT with adaptor removed

Damping: Time constant continuously adjustable between 0.2 (0.4 for 30 inH

range) to 1.67 seconds for silicone fill

PX750-30Gi, $1695, shown smaller than actual size..

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B-231

HEAVY DUTY DIFFERENTIAL PRESSURE TRANSMITTER

⻬ High Accuracy:

0.2% of Span

⻬ “Smart” Option ⻬ External Zero and

Span Adjustments Up to 600% Elevation or 500% Suppression

⻬ Stainless Steel Diaphragm ⻬ NEMA 4X Enclosure ⻬ FM Explosion-Proof

Rating

PX750-30DI, $1805, showns smaller than actual size.

SPECIFICATIONS

Accuracy: ±0.2% of calibrated span,.

Includes combined effects of hysteresis, linearity and repeatability

Linearity: ±0.1% of calibrated span Hysteresis: ±0.05% of calibrated span Dead Band: None Stability: ±0.2% of upper range limit for

6 months

The PX750 Industrial Transmitter is designed for accurate measurement of differential pressure in higher dp applications such as level measurements on towers and pressure drop accross compressors or filters. Full overpressure protection to 2000 psi permits confident application in high pressure systems. Installation is simplified by a compact flexible design, 2-wire compatibility, external span and zero adjustments all packaged in an FM approved, weather-tight NEMA 4 enclosure.

A new “Smart” option now makes the PX750 compatible with new installations and makes it possible to upgrade existing installations.

Temperature Effect at Maximum Span 0 to 150 inH20: Zero error ±3% of span

per 55°C (100°F); total error ± 3.5% of span per 55°C (100°F) (includes zero and span errors)

Note: Double the specified effects for the 0 to 30 inH2O range.

Static Pressure and Overpressure Limits: 0 psia

to 2000 psig on either or both sides without damage to the transmitter. Operates within specifications for static pressure from 0.5 psi absolute to 2000 psig; 10,000 psi proof pressure on flanges

High Differential Ranges:

Zero effect: ±0.5% of upper range limit for 2000 psi; span error:

-1 ±0.25% of reading for 1000 psi; this is a systematic error which can be calibrated out prior to installation

Damping: Time constant continuously adjustable between 0.2 and 1.67 s

Process Connections: Reversable for either

⁄4 FNPT on 21⁄8" centers or

⁄2 FNPT on 2, 21⁄8 or 21⁄4" centers with

adaptors provided

PX750-DI/HDI Series

0-5 inH2O to 0-170 psid

Starts at

1545

AVAILABLE FOR FAST DELIVERY!

To Order

(Specify Model Number)

LOWER RANGE UPPER RANGE

MODEL NO. PRICE DIFFERENTIAL DIFFERENTIAL COMPATIBLE METERS INH2O DIFFERENTIAL PRESSURE RANGES

PX750-30DI $1805 0 to 5 inH20 0 to 30 inH20 DP41-E, DP25B-E, DP3002-E PX750-150DI 1545 0 to 25 inH20 0 to 150 inH20 DP41-E, DP25B-E, DP3002-E PX750-750DI 1665 0 to 125 inH20 0 to 750 inH20 DP41-E, DP25B-E, DP3002-E

HIGH DIFFERENTIAL PRESSURE RANGES

PX750-100HDI $1665 0 to 17 psi 0 to 100 psi DP41-E, DP25B-E, DP3002-E PX750-300HDI 1665 0 to 50 psi 0 to 300 psi DP41-E, DP25B-E, DP3002-E PX750-1KHDI 1665 0 to 170 psi 0 to 1000 psi DP41-E, DP25B-E, DP3002-E

Page 4

B-232

DIFFERENTIAL

PRESSURE TRANSDUCERS

PX750-SQDI Series

5 to 750 inH2O

Starts at

1675

SQUARE ROOT OUTPUT TRANSMITTER FOR FLOW MEASUREMENT

For the measurement of flow, the PX750 transmitter combines the square root extraction function within the differential pressure transmitter to provide a 4 to 20 mA signal directly proportional to flow. It is compatible with all OMEGA®4 to 20 mA readout devices. The PX750 flow transmitter has an operable range from 20 to 100% of flow rate. No additional power supplies, wiring or additional “block boxes” are required for use with this instrument. A stable zero flow signal is achieved by electronically switching from a square root to a linear function at 20% of flow.

SPECIFICATIONS

Accuracy: ±0.25% of calibrated span

for a range of 20% to 100% of flow (4% to 100% of input pressure). Includes combined effects of hysteresis, repeatability, and conformity of the square root function. Output linear with input pressure for the range of 0 to 20% of flow (0 to 4% of input pressure).

Deadband: None Stability: ±0.25% of upper range limit

for six months Temperature Effect: The total output

effect, whether at zero or full scale, including zero and span errors: ±1.5% of upper range limit per 100°F (55°C) (±0.25% for PX750-30 model)

PX750-30SQDI, $1785, shown in typical installation with a pitot tube sensor. See the OMEGA

Flow Handbook for a complete selection of flow products.

Static Pressure Effect:

Zero Error: ±0.25% of differential

pressure upper range limit for 2000 psi (13.79 MPa), ±0.5% for PX750-30

Span Error: Correctable to ±0.125% of reading per 1000 psi (6.89 MPa), ±0.25% for PX750-30 model); this is a systematic error which can be calibrated out for a particular pressure before installation.

Damping: Time constant continuously adjustable between 0.2 and 1.0 s

Static Pressure and Overpressure Limits: 0 psia to 2000 psig (to 13.79 MPa)

on either side without damage to the transmitter; operates within specifications between static line pressure of

⁄2 psia and 2000 psig (3.44 kPa to 13.79 MPa) for silicone oil transmitters, and 10,000 psig (68.95 MPa) proof pressure on the flanges

To Order

(Specify Model Number)

Lower Range Upper Range Compatible

Model No. price Differerential Differential Meters

PX750-30SQDI $1785 0 to 5 inH20 0 to 30 inH20

DP41-E, DP25B-E, DP3000-E

PX750-150SQDI 1675 0 to 25 inH20 0 to 150 inH20

DP41-E, DP25B-E, DP3000-E

PX750-750SQDI 1675 0 to 125 inH20 0 to 750 inH20

DP41-E, DP25B-E, DP3000-E

⻬ Output Linear with Flow ⻬ High Accuracy: 0.25% ⻬ Adjustable Damping ⻬ Linear Zero Functions

for High Stability

⻬ Rugged NEMA 4X

Industrial Enclosure

Omega Products PX750-1KGI User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual