Omega Products PX709GW-001GV-HH User Manual

SUBMERSIBLE PRESSURE
TRANSDUCERS

FOR LEVEL, DEPTH OR GROUND WATER MEASUREMENTS

Gage, Sealed Gage or
Absolute Pressure

mV/V, 0 to 5 Vdc, 0 to 10 Vdc, or
4 to 20 mA Outputs

0-10 inH2O to 0-1000 psi

PX709GW Series

Level/Submersible

Standard

U Precision Micromachined

Silicon Sensor

U 5-Point NIST Traceable

Calibration

U Lightning/Surge

Protection Available on
Amplified Models

U 316L SS Case and

Diaphragm

U Fused Polyurethane Cable
U Premium Temperature

Performance

U Broad Compensated

Temperature Range

U 0.20% Standard Accuracy

or Optional 0.08% High
Accuracy Models for
Precise Depth
Measurement

U Available in Gage

Pressure: Vented to
Atmosphere Through the
Cable; Sealed Gage: Not
Vented to Atmosphere;
or Absolute Pressure:
Vacuum Reference

U

Reverse Polarity Protected

U Protective Nose Cone and

Desiccant Available

U Standard or Custom

Cable Lengths

The PX709GW Series submersible
depth transducers are designed
to make precision level or depth
measurements in fresh water or
liquids compatible with 316 SS
reliably for years in harsh industrial
environments. The PX709GW

Economical Price

High Performance

series has the proven Omega
micromachined silicon technology as
its core sensor. The Piezoresistive
technology uses precision solid state
strain gages molecularly embedded
into a highly stable silicon wafer.
The silicon is mounted in a sealed
chamber and protected from the
environmental fluids by a pressure
sensitive stainless steel diaphragm.
A very small volume of silicone
oil transfers the pressure from the
diaphragm to the silicon sensor.
The cable is molded onto the case
using a unique high pressure, high
temperature system to assure the
best possible quality seal for long
life and durability. This technology
produces a very rugged, high
stability sensor with exceptional
accuracy, minimal thermal effects
and long term reliability.

B-1

Nose cone included.

Applications

• Level Monitoring and Control

• Depth Measurement

• Surface Water Monitoring

• Tank Level

• Well Water Depth

• Waste Water Applications

• Dewatering Installations

• Construction Bypass

Inconel® models are also available for
oceanic research and highly corrosive
or salt water applications. See model
PX709SW.

PRESSURE TRANSDUCERS

B

PX709GW available
with optional lightning
protection shown
smaller than actual size.

SUBMERSIBLE PRESSURE TRANSDUCERS

FOR LEVEL, DEPTH OR GROUND MEASUREMENTS

PX709GW Connections

mV/V VO LTAGE CURRENT

Red

Black

(+) V in (+) V in (+) Supply

(-) V in (-) Common (-) Supply

Shown monitoring river level for
flood warning.

Green

White

* If 4-wire voltage output is chosen, see application note in manual.

Note: Conduit
fitting add
30 (1.2)
maximum to
Length

Dimensions: mm (inch)

COMMON SPECIFICATIONS

Approvals: RoHS compliant
Accuracy (Combined Linearity,

Hysteresis and Repeatability):

Standard ±0.20% BSL or high accuracy,
option “HH”, ±0.08% BSL

Setting Accuracy Zero: ± 0.5% FS
typical, ± 1.0% FS maximum (± 1.0% FS
typical, ± 2.0% FS maximum for ranges
≤ 2.5 psi)

Setting Accuracy Span: ± 0.5% FS
typical, ± 1.0% FS maximum (± 1.0% FS
typical, ± 2.0% FS maximum for ranges
≤ 1psi) calibrated in vertical direction with
fitting down

Minimum Resistance Between
Transducer Body and Any Wire:

100M Ω @ 50 Vdc (before surge
protection)

Pressure Cycles: 1 million minimum
Long Term Stability (1 yr.): ±0.1%

FS typical
Operating Temperature: -18 to 79°C

(0 to 175°F) with no solid freeze
Compensated Temperature: -1 to 32°C

(30 to 90°F)

Thermal Effects (Over Compensated
Range):

Zero Balance:

Ranges >5 psi: ±0.3% span
Ranges ≤5 psi: ±0.5% span

Span Setting:
Ranges >5 psi: ±0.3% span
Ranges ≤5 psi: ±0.5% span

Bandwidth: DC to 1 kHz typical
Response Time: 500 usec, 0 to 90%

step change
CE Compliant: Meets EN 61326-1: 2006

for industrial locations (certified with
91 m (300'))

Lightning Protection Option
(if included): Integral lightning surge

protection to IEC-61000-4-5 (Level 4)
Shock: 50 g, 11 ms, half-sine horizontal

and vertical axis

(-) Signal no connection or Common* Shunt (option)

(+) Signal (+) Signal Shunt (option)

94 (3.7)

94 (3.7)

102 (4.0)

133 (5.2)

Vibration: ± 20 g
Overpressure

Gage and Sealed Gage:
10 inH
1 psi: 6 times span

2.5 to 1000 psi: 4 times span
Absolute: 5 psia: 6 times span;

Containment Pressure
Gage Pressure

10 inH
15 to 1000 psi: to 3000 psi
Absolute Pressure: 5 to 1000 psi: to

6000 psia

Wetted Parts: 316L stainless steel
Body Material: 316L stainless steel
Pressure Connection: 9/16-18 UNF

female
Transducer Weight: 285 g (10 oz)

typical depending upon configuration
Cable Construction: Polyurethane

jacket with double Kevlar
stringers, fused to case, with large
vent tube

Cable Pull Strength: 109 kg (240 lb)
Cable Conductors: Four 24 AWG

(19/36 stranded tinned copper) with
ETFE insulation. Meets
MIL-W-22759/16 & SAE AS22759/16

Cable Sealing: Fused to case via
molded Neoprene boot rated to 610 m
(2000') depth

Standard Cable Lengths (ft): 10, 15,
20, 25, 30, 40, 50, 60, 65, 74, 100, 150,
200, 300, for other lengths contact
factory for lead times (see page 6)

O: 10 times span

2

ranges >5 psia: 4 times span

O to 5 psi: to 1000 psi

2

Desiccant, shown smaller

than actual size.

B-2

Standard Unit

Lighting Protected Unit

®

reinforcing