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2-Wire Isolated Dissolved Oxygen
Transmitter System
DOTX-45
$
1325
Complete System
DOTX-45 transmitter,
$675, shown smaller
than actual size.
⻬ Reliable 3-Electrode
Amperometric Sensor
⻬ Replaceable Sensor Cartridge
⻬ Sensor Membrane
Puncture/Tear Diagnostic
⻬ Microprocessor-Based System
⻬ Large, Dual-Display Format
⻬ Loop Powered, Fully Isolated
Sensor Features
The DOE-45PA dissolved oxygen sensor
is a highly dependable membrane-covered
galvanic sensor. The polymer membrane
has hydrophobic properties to help resist
fouling from biological growth and
maximize diffusion of oxygen into the
sensor. The DOE-45PA also has
automatic temperature compensation to
correct for membrane permeability errors.
Transmitter Features
The microprocessor-based transmitter is
loop powered and fully isolated for high
reliability. The transmitter includes devices
that protect the system from power surges
and brownout events. The large,
high-contrast, super-twist display is
readable over a wide operating temperature
range, even in low-light conditions. The
main display line consists of large,
segmented characters with measurement
units. The secondary display line displays
calibration and diagnostic messages in
readable dot-matrix characters. Two of four
measured parameters can be displayed
simultaneously. Programming is intuitive,
with a 4-button, menu-driven interface.
The 4 to 20 mA transmitter output can be
configured to represent any portion of the
measurement range. Output hold, alarm,
and simulation features give the user
complete control of the system output
under any condition. Diagnostic messages
clearly describe system conditions, which
eliminates confusing error codes.
The flexible calibration method includes
stability monitors that check temperature
and main parameter stability before
accepting data.
Specifications
(DOE-45PA Sensor)
Measuring Range:
0 to 40 ppm
Sensor Cable: 9.1 m (30')
Measurement Response Time:
90% in less than 3 minutes
Measurement Principle:
Membrane covered galvanic
Electrode Material:
Cathode: Platinum
Anode: Lead
Electrolyte: Potassium chloride based
Pressure Range:
0 to 150 psig @ 25°C (77°F)
Temperature Compensation: Pt100
Temperature Range:
-5 to 55°C (23 to 131°F)
Minimum Flow Rate:
6 mm (0.02') per second
DOE-45PA sensor,
$650, sold separately,
shown smaller than
actual size.
Membrane Thickness:
50 microns
Membrane Material: FEP
(fluorinated ethylene propylene)
Wetted Materials: 316 SS, FKM, Noryl
Sensor Cable: 5-conductor
Sensor-to-Transmitter Distance:
305 m (1000')
Mounting: Submersion 1 NPT
Shipping Weight: 0.45 kg (1 lb)
Specifications
(DOTX-45 Transmitter)
Performance Specifications
Displayed Parameters: Main input,
0 to 40.0 ppm
% Saturation: 0 to 200%
Loop Current: 4 to 20 mA
Sensor Temperature:
0 to 50°C (32 to 122°F)
Power: 16 to 35 Vdc
F-7
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continues to expand, visit omega.com for new details!
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Main Parameter Range: 0 to 40 ppm
Repeatability: 0.1% of span or better
Sensitivity: 0.05% of span
Non-Linearity: 0.1% of span
Stability: 0.1% of span per 24 hours,
non-cumulative
Warm-Up Time:
4 seconds to rated performance
Supply Voltage Effects: ±0.05% of span
Transmitter Response Time: 4 seconds to
90% of step input at lowest setting
Temperature Drift: Span or zero,
0.02% of span/°C
Temperature Compensation: 0 to 50°C
(32 to 122°F), Pt1000 element; sensor is
internally compensated for membrane
permeability changes with temperature
Sensor-to-Transmitter Distance:
305 m (1000')
Enclosure: NEMA 4X (IP66),
polycarbonate, stainless steel hardware,
weatherproof and corrosion resistant,
112 H x 112 W x 89 mm D
(4.4 x 4.4 x 3.5")
Mounting Options: Wall, panel, pipe,
DIN rail, integral-sensor
Conduit Openings: 2-PG9 openings,
1-1 NPT center opening, cordgrips and
plug included
Weight/Shipping Weight: 0.45 kg (1 lb)
Display: Large, high-contrast, super-twist
LCD; 4-digit main display with sign,
19.1 mm (0.75"), 7-segment characters;
12-digit secondary display, 7.6 mm (0.3")
5 x 7 dot matrix character
Keypad: 4-key membrane type
with tactile feedback, polycarbonate
with UV coating, integral EMI/static
shield and conductively coated window
Operating Temperature:
-20 to 60°C (-4 to 140°F)
Storage Temperature:
-30 to 70°C (-22 to 158°F)
Ambient Humidity:
0 to 95%, non-condensing
Location: Designed for hazardous
and non-hazardous areas
EMI/RFI Influence:
Designed to EN 61326-1
Voltage Range: 16 to 35 Vdc
(2-wire device)
Output Isolation: 600V galvanic isolation
Transmitter Cable Type:
Belden twisted-pair, shielded
Filter: Adjustable 1 to 99 seconds additional
damping to 90% step input
Temperature Input: Selectable Pt1000 or
Pt100, automatic compensation
Recommended Reference Book:
Handbook of Drinking Water Quality,
ES-2036, $160. Visit
omega.com/bobi for Additional Books
DOTX-45, $675.
$650, sold separately, shown
DOE-45PA sensor,
smaller than actual size.
AVAILABLE FOR FAST DELIVERY!
To Order (Specify Model Number)
Model No. Price Description
DOTX-45 $675 Dissolved oxygen transmitter
DOTX-45-115VAC-R2 925 Dissolved oxygen transmitter with relays
DOE-45PA** 650 Dissolved oxygen sensor
PSU-93 40 Unregulated power supply
PHTX-45-SMH 95 Submersion mounting hardware, 1.8 m (6')
Accessories
Model No. Price Description
DOE-45PA-DOE** $35 DO electrolyte, 4 oz bottle
DOE-45PA-EC 35 Electrolyte chamber
DOE-45PA-MH 30 316 SS membrane holder
DOE-45PA-RLE 15 Replacement lead electrode
DOE-45PA-RM** 15 Membranes, 5 mil 10-pack
DOE-45PA-SE 200 Submersible sensing-element body
DOE-45PA-SH 400 Submersible sensing-element holder assembly
DOE-45PA-SM 250 Submersible sensing module
Comes complete with wall mount bracket and operator’s manual.
When purchasing the DOE-45PA for the first time it is necessary to also purchase the
**
DOE-45PA-DOE electrolyte solution and DOE-45PA-RM membranes.
Ordering Examples: DOTX-45, dissolved oxygen transmitter, DOE-45PA, sensor, DOE-45PA-DOE,
electrolyte solution 4 oz bottle, DOE-45PA-RM, 5 mil 10-pack membranes,
$675 + 650 + 35 + 15 = $1375.
Ordering Examples: DOTX-45, dissolved oxygen transmitter, DOE-45PA, sensor, PSU-93,
unregulated power supply, DOE-45PA-DOE, electrolyte solution 4 oz bottle, DOE-45PA-RM, 5 mil
10-pack membranes, DOE-45PA-MH, 316SS membrane holder, $675 + 650 + 40 + 35 + 15 + 30 = $1445.
Order Online
Over 100,000 Products Available!
To download information and to order Dissolved Oxygen
Instrumentation products online, visit omega.com
F-8
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