Responsibility is quality assurance,quality is the life of the brand.
|Place of Origin:||Chongqing,China|
|Minimum Order Quantity:||1 set|
|Packaging Details:||Waterproof and shockproof wooden case packing|
|Delivery Time:||10 days|
|Payment Terms:||T/T, L/C,Western Union|
|Supply Ability:||1000 sets/year|
|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)|
oil testing instruments,
oil testing machine
Lubrcating Oil Transformer Oil Testing Equipment On Line Moisture Testing Machine
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.
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.
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.
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|
|Accuracy incl. hysteresis and nonlinearity in air||±0.02aw (0...0.9aw) ±0.03aw (0.9...1aw)|
aw: ±(0.00022 + 0.0002 x aw) x ∆T [°C] ∆T = T - 20°C
|Response time with stainless steel filter at 20 °C (68 °F) / t90||typ. 10 min in still oil|
|Temperature sensor element||Pt 100 DIN A|
|Working range sensing probe||-40...120°C (-40...248°F)|
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)
|Supply voltage||10...30V DC|
|Current consumption at 24V DC||
voltage output: typ. 40mA
current output: typ. 80mA
|Pressure range||0...20bar (0...290psi) / 0...100bar (0...1450psi)|
|System requirements for software||WINDOWS 2000 or later; serial interface|
|Serial interface for configuration||RS232C|
|Housing / Protection class||Al Si 9 Cu 3 / IP65|
7-pole industrial plug: DIN VDE 0627 / IEC 61984
cable cross-section: 0.25 - 1 mm2 / cable connection: PG 11
|Sensor protection||stainless steel filter(punched)|
|Working and storage temperature range|
|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
Contact Person: Kevin