DOMINO Permanent-Mount Sensors
 The DOMINO sensor measures moisture in oil
in terms of ppm and relative saturation (RS), as well as temperature.
It provides continuous, reliable measurement of the water content of
electrical insulating liquids and other types of oils. 
Determining the moisture in insulating liquids is an essential part
of any comprehensive maintenance or diagnostic program. Since DOMINO was
introduced in 1999, its enthusiastic acceptance in the industry has
placed it as another respected, superior quality instrument from Doble
Engineering.
Features and Benefits
- Instantaneous Results. No waiting ... DOMINO provides continuous results in parts per million (ppm), relative saturation, and temperature.
- An Effective Monitor. Continuously
monitors oil reconditioning in systems as small as a single filter
cartridge to as large as a mobile or stationary processing plant. Helps
determine filter changeout, process efficiency, and when to terminate
processing. Readout is directly in ppm—no need for charts and
conversions.
- Simple to Use. Eliminates
harmful chemicals and laboratory systemic errors associated with Karl
Fischer titrations, delicate Karl Fischer titration devices, sampling
error, and contamination from ambient humidity.
- Quick Response. In
flowing oil at a velocity of 4 liters per minute or more (1 gallon per
minute), the time for 100% response is 30 seconds or less. This means
you can perform your job quicker and more accurately.
- Easy installation. The
probe installs directly in flowing oil of up to 2271 liters per minute
(600 gpm). As for the transmitter, just plug it in … it will start to
measure and display immediately.
- Immune to Interference. Accuracy
of measurements is unaffected by the severe electrostatic and
electromagnetic interference conditions in substation environments.
- Highest Accuracy. At ±1%, including nonlinearity and repeatability, the accuracy is the best in the industry.
- Stable Calibration. Calibration stability ensures accuracy and validity of the measurements.
- Rugged and Reliable. Robust design provides the accuracy of a laboratory instrument with durability for field use.
- Flexible Configurations. Comes
with two analog outputs, with defaults set to 4 to 20 mA. Easily change
and select outputs, which are scalable from 0–20 mA or 0–10 V. Simple
software commands allow you to complete configuration in a few minutes,
even in the field. Access and change operating parameters through the
local display menu or the serial bus.
- Storage and Graphing Capabilities.
The data recording function is always on, collecting data automatically
into the device's memory. Recorded data does not disappear from memory
when the power is switched off. View collected data as a graph or
download it using the serial connector. If the model is provided with
the optional display, the recorded quantities are always those selected
for the display. Up to three quantities can be recorded at a time.
DOMINO incorporates many options in our
base unit, such as two selectable and scalable outputs and a serial
bus. Most models include a keypad and display and are powered by either
24 VDC or a selectable 115/230 VAC power supply. DOMINO models
have various cable lengths from the probe to the transmitter
(display/keypad) and can be mounted permanently or temporarily. A
portable version is also available, as well as two models with an
alarm output. These options allow you to suit the product to your
needs.
DOMINO Ultimate Sampling System (USS)
 A fast, convenient way to measure water content in oil or the dewpoint of a gas
DOMINO USS is a
portable system consisting of either a moisture-in-oil sensor or a
moisture-in-gas (dewpoint) sensor, or both. Shipped in a handy carrying
case, it provides a fast, convenient way to take high-quality samples.
DOMINO USS gives
you a fast, convenient way to measure water content in oil or the
dewpoint of a gas while you’re performing other field tests. It is also
a highly effective way to insure quality samples: the moisture-in-oil
ppm or dewpoint reading stabilizes only when excess moisture has been
removed from the valve, ensuring that the valve or access point is
adequately flushed before sampling. The real-time graphic display
allows instant monitoring of the stabilization procedure.
The simplicity of the process means time savings for you. As oil or
gas flows past the sensor in the manifold, the instrument measures the
ppm of the water in the oil, relative saturation, and temperature of
the oil or the dewpoint and temperature of the gas. It takes only 2–3
minutes to attach the adapters and just a few more minutes to obtain a
stable reading once oil or gas is flowing.
Features and Benefits
Lightweight and portable
- Gather high-quality samples during other field tests.
- Obtain accurate results in six minutes or less.
- Accepts two probes simultaneously – recognizes both probes and their type (moisture-in-oil or dewpoint).
- Operates on AC voltage or rechargeable battery for portability.
Moisture-in-oil sensing
-
Sensor mounts to a transformer valve or other oil-filled electric device for instant readout of water content in ppm.
-
Monitor the oil filling process by measuring the incoming and outgoing oil from the processing trailer.
-
Quick-connect fittings let you connect to the valve easily.
-
Analyze four different oil types, each with the press of a button:
-
New and in-service transformer oil
-
Very aged transformer oil (>0.18 mg KOH/g)
-
Silicone
-
Natural esters (vegetable oil dielectrics)
Moisture-in-gas sensing
- Monitor the dewpoint of the interior atmosphere of the incoming transformer.
- Monitor the dewpoint of the vacuum, dry air, nitrogen, and other inert gases.
- Unlike other dewpoint sensors, the USS sensor is immune to oil vapor.
Buy only what you need now, and expand later
The modular, multi-option structure of DOMINO USS allows you to begin with a basic kit and add to it as your needs evolve.
 1_Domino_Brochure_9-2007.pdf (260.92 kB)
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