Omega Products PX750-1KGI User Manual

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

3

⁄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

3

)

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

®

A

(Flouro-Polymer)

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

Low Copper Aluminum

Paint: Epoxy-Polyester
Electrical Connections:

1

⁄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

FM

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

0

12 20 30 40 45 55

B-230

B

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

20

range) to 1.67 seconds for silicone fill

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