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Lubrcating Oil Transformer Oil Testing Equipment On Line Moisture Testing Machine

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Lubrcating Oil Transformer Oil Testing Equipment On Line Moisture Testing Machine

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Brand Name : HLA

Model Number : EE381

Certification : ISO9001,CE

Place of Origin : Chongqing,China

MOQ : 1 set

Price : Negotiable

Payment Terms : T/T, L/C,Western Union

Supply Ability : 1000 sets/year

Delivery Time : 10 days

Packaging Details : Waterproof and shockproof wooden case packing

Measuring range : 0...1aw

Accuracy incl. : ±0.02aw (0...0.9aw) ±0.03aw (0.9...1aw)

Temperature sensor element : Pt 100 DIN A

Working range sensing probe : -40...120°C (-40...248°F)

Supply voltage : 10...30V DC

Pressure range : 0...20bar (0...290psi) / 0...100bar (0...1450psi)

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Lubrcating Oil Transformer Oil Testing Equipment On Line Moisture Testing Machine


Description:

E+E Transmitter Series EE381 are specially designed for the measurement of water content in oil. EE381 is ideal for online monitoring of moisture in lubrication or insulation oil, which is very important for the long-term performance and preventive maintenance of plant and machinery.


For instance, moisture affects dramatically the insulation characteristics of electrical transformer oil and therefore continuous monitoring is extremely important.


Humidity measurement in oil:
Similar to the humidity in the air, the water content in oil can be indicated by the absolute value in ppm or by the relative value aw.

- ppm (mass of water / mass of oil)

-aw (actual water content as fraction of the water content in saturated oil)

aw = 0 corresponds to water-free oil, while aw = 1 indicates saturated oil. aw measurement with the EE381 transmitter is based on the outstanding long term stability and resistance to pollution of the E+E capacitive sensor elements series HC.

The measured physical quantities are water activity aw and temperature T. With these quantities EE381 calculates the water content x (ppm) in mineral transformer oils. Calculation of water content (ppm) in non-mineral oils and lubrication oils can be achieved by programming the specific parameters of the oil into the EE381.


Out put:

The EE381 transmitter has two freely selectable and scaleable outputs for water activity, water content or temperature.


The EE381 switch with two relay outputs is designed for control and alarm purposes. The status for early warning and main alarm is indicated by LED's.


Adjustment of the aw/T/ppm set point and hysteresis can be achieved with the optional configuration software.


Configuration Software:

The optional configuration software allows flexible and easy adjustment of the analogue resp. relay outputs to the respective requirements.


The adjustment / calibration of the transmitters can easily be performed.


Screw Connection for Mounting - 360° positionable:

The construction of this screw connection enables any position / rotation of the mounted transmitter.


So an optimal position of the display resp. the cable outlet is guaranteed.


Typical applications:

Monitoring of

measuring range 0...1 aw

measurement of water content in ppm

medium temperature -40...80°C (-40...176°F)

two relay outputs for aw/ppm/T

- Transformer oil
- Hydraulic oil
- Ship engines

Technical Data

Measuring values:

Water activity
SensorHC1000-400K
Measuring range0...1aw
Accuracy incl. hysteresis and nonlinearity in air±0.02aw (0...0.9aw) ±0.03aw (0.9...1aw)
Temperature dependence

aw: ±(0.00022 + 0.0002 x aw) x ∆T [°C] ∆T = T - 20°C

T: ±(0.0003°C/°C)

Response time with stainless steel filter at 20 °C (68 °F) / t90typ. 10 min in still oil
Temperature
Temperature sensor elementPt 100 DIN A
Working range sensing probe-40...120°C (-40...248°F)
Accuracy

Outputs:

EE381-Tx two freely selectable and scaleable

analogue outputs for aw, T, ppm

0 - 1V / 0 - 5V / 0 - 10V1) -1mA < IL< 1mA

4 - 20mA / 0 - 20mA RL < 500 Ohm1)

EE381-Sx alarm output

2 potential-free relays (NC)

30V DC 0.6A / 35V AC 0.3A (resistive)


General:

Supply voltage10...30V DC
Current consumption at 24V DC

voltage output: typ. 40mA

current output: typ. 80mA

Pressure range0...20bar (0...290psi) / 0...100bar (0...1450psi)
System requirements for softwareWINDOWS 2000 or later; serial interface
Serial interface for configurationRS232C
Housing / Protection classAl Si 9 Cu 3 / IP65
Electrical connection

7-pole industrial plug: DIN VDE 0627 / IEC 61984

cable cross-section: 0.25 - 1 mm2 / cable connection: PG 11

Sensor protectionstainless steel filter(punched)
Working and storage temperature range
Probe:-40...120°C (-40...248°F)
Electronic:-40...80°C (-40...176°F)
with LC display:20...50°C (-4...122°F)
Storage temperature range-40...60°C (-40...140°F)
Electromagnetic compatibility according to

EN 61326-1 EN61326-2-3 ICES-003 ClassB

Industrial Environment FCC Part15 ClassB


Product Tags:

oil testing instruments

      

oil testing machine

      
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