E+E MOP301 Digital Moisture-in-Oil Immersion Probe

Name: E+E MOP301 Digital Moisture-in-Oil Immersion Probe
Price: 1519.0 USD
Availability: BackOrder

Starting at $1,519.00

Effective January 6th, 2026, E+E has added a 15% surcharge for all of their products. The surcharge will appear as a separate line item on the order.

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Manufactured

By E+E Elektronik

Includes

FREE Ground Shipping on orders of $2,000 or more
FREE Lifetime Tech Support

Availability

Usually ships in 4-5 weeks

Product Manual Product Specs

Features

Measuring range:
- Water activity (aw) / water content (x): 0 to 1 aw, 0 to 100,000ppm with mineral transformer oil
- Temperature: -40 to 248°F (-40 to 120°C)
Accuracy (including hysteresis, non-linearity and repeatability):
- 0 to 0.9 aw, 32 to 104°F (0 to 40°C): ±0.02 aw
- 0.9 to 1 aw, 32 to 104°F (0 to 40°C): ±0.025 aw
- 0 to 1 aw, -40 to 356°F (-40 to 120°C): ±0.03aw
Temperature working range:
- Sensing element & filter cap: -40 to 257°F (-40 to 125°C)
- Probe & cable: -40 to 248°F (-40 to 120°C)
- M12 connector: -13 to 194°F (-25 to 90°C)
10 min response time t90, typical @ 68°F (20°C) in still oil
Resolution:
- 0.001 aw
- 0.01°C

This product is an accessory for the following products:

E+E Omniport 40 Multi Function Monitor

Hand-held; connect up to two probes, remote for process probes up to 3.28ft (1m) and hand-held probes up to 6.56ft (2m).

$1,292.00

The E+E MOP301 Digital Moisture-in-Oil Immersion Probe measures the moisture in transformer, lubrication, or hydraulic oil as well as in diesel fuel. The probe is ideal for preventive maintenance of equipment and machinery. Besides the accurate measurement of water activity (aw) and temperature (T), the MOP301 calculates the absolute water content of the oil (x) in ppm. The dynamic calculation is based on oil-specific solubility parameters.

The probe employs high end E+E humidity sensing elements with long term stability and high resistance to pollution. Using the optional ball valve, the probe can be mounted or removed without process interruption. Measured data is available on the RS485 interface with Modbus RTU protocol. The oil resistant cable with moulded M12 connector assures reliable data transmission even in harsh and aggressive environments. The free PCS10 Product Configuration Software and the optional adapter facilitate the setup and adjustment of the MOP301.