Oil Trace Monitor for Mineral Oils for hazardous Areas

The OilGuard works on the fluorescence principle. The design uses a free-fall measuring system that eliminates contact between the sample and the flow cell. Adoptions to various types of oil are carried out by means of calibration curves, a control glass makes it easy to check or recalibrate the instrument. A pressurized-enclosure version is offered for areas requiring explosion protection.

Measuring principle
Fluorescence measurement
Resolution
±0.5% (referred to quinine sulfate in water)
Reproducibility
±2% (referred to quinine sulfate in water)
Reaction time
max. 2 s (step response → limit switch)
Enclosure
Stainless steel, DIN 1.4404 / SS 316L
Protection class
Zone 1, Group IIC, T4
Protection index
IP66
Flow cell material
Closed flow cell: stainless steel 1.4435
Free-fall flow cell: stainless steel 1.4435 or PVDF
Sample flow rate
Closed flow cell: 0.5 .. 2 l/min
Free-fall flow cell: 5 .. 7 l/min
Supply voltage
230 V; 50/60 Hz
(with matching transformer: 100, 115, 130 V)
Power input
150 VA
Dimensions
680 x 536 x 312 mm
Weight
about 37 kg
Sample temperature
Closed flow cell: max. 100 °C
Free-fall flow cell: max. 40 °C (VA), max 95 °C (PVDF)
Sample pressure
Closed flow cell: max. 1 MPa (=10 bar)
Free-fall flow cell: pressureless
Interfaces
Profibus DP (optional)
Purge air
6 l/min
Ambient environment
-20 .. + 40 °C (optional max. +50 °C)
Maximum service altitude
3,000 m above sea level
Analog outputs
0/4..20 mA (max. 600Ω/max. 24V)
Warm-up time
min. 2 h