LPM-II-plus Particle Monitor

The LPM-II-plus Particle Monitor determines the contamination level of the measured fluid on eight size channels and offers precise and complete determination of particle sizes in accordance with international standards. The LPM-II-plus is an automatic, optical particle counter with high-performance LEDs that work on the light obscuration principle. STAUFF recommends recalibrating the measuring equipment at regular intervals.

Multicolor indicators via LCD (K versions) and LED with output alarm signals as standard
Secondary connector to allow the simultaneous control/ download of results during operation
4-20mA analogue output as standard (time multiplex)

Options

Moisture sensor/temperature sensor: RH in % (relative humidity) and temperatures in °C
Phosphate Ester- (e.g. Skydrol®) and Water Glycol compatible devices are available on request
USB Port for Data transfer (optional)

Technical Data

Channels

>4, 6, 14, 21, 25, 38, 50, 70 µm(c) according to ISO 4406:1999

Measuring Range/Purity Classes

ISO 4406:1999 Code 0 to 25, NAS 1638 Class 00 to 12, AS4059 Rev. E. Tables 1 and 2 Sizes A-F: Classes 000 to 12, ISO 11218 Classes 00 to 12 (lower codes or classes are test time-dependent)

Precision

±1/2 Code for 4, 6, 14 µm(c)
±1 Code for larger particles

Calibration

Each device is individually calibrated using ISO Medium Test
Dust (MTD) in accordance with ISO 11171 (1999);

Flow

20 to 400 ml/min (0.005 to 0.11 US GPM)

Viscosity Range

≤ 1000 mm²/s

Medium Temperature

-25 °C to +80 °C (-13 °F to +176 °F) pressure-dependent

Ambient Temperature

LMP II-O: -25 °C to +80 °C (-13 °F to +176 °F)
LMP II-D: -25 °C to +55 °C (-13 °F to +131 °F)

Weight

1,6kg (3.53 lbs)

Fluid Compatibility

M: suitable for Synthetic and Mineral Oil based fluids, Diesel and Petroleum
G: Austenitic Stainless Steel, FKM (Viton®): suitable for offshore and aqueous fluids
E: Austenitic Stainless Steel, Per fluorinated Rubber (FFKM): suitable for Phosphate Ester and aggressive media Max. Permissible Operating Pressure
420 bar (6091 PSI) static temperature-dependent

Test Duration

Settable between 10 to 3600 sec., set ex-works to 120 sec.
As standard with start delay and freely programmable test intervals

Moisture Sensor/Temperature Sensor

% RH (relative humidity) ±3 %
±3 °C (±32 °F)

Volumetric Flow Measurement

As display only

Hose Connections

Test coupling STAUFF Test 20 or comparable (M16 x 2)

Data Storage

Max. 4000 measuring results

Interfaces

RS485, RS232, Modbus, CAN Bus
4-20 mA time multiplex interface
USB interface to transfer measured data to a data carrier (optional)

International Protection Rating

IP 65/67: Dust-proof and protected from spray
Impact resistance rating IK04

Power Supply/Power

9 to 36 V DC, < 2.2 W (connecting cable with flying leads is included)

Current Consumption

12 V: 70 mA (LPM-II-plus-O), 150 mA (LPM-II-plus-D)
24 V: 40 mA (LPM-II-plus-O), 80 mA (LPM-II-plus-D)
36 V: 30 mA (LPM-II-plus-O), 60 mA (LPM-II-plus-D)

Housing Surface Treatment

Polyurethane based paint, according to BSX34 color BS381-638 (dark sea grey)
Tested according to: BS2X34A and BS2X34B, MMO114 and SP-J-513-083 Part II. Cl. A
The unit meets: MIL-PRF-85285

Wetted parts