Clogging Indicators

Product catalog summary

Introduction
Filter elements are optimized when their Dirt Holding Capacity is fully utilized, achieved through filter housings with clogging indicators. MP Filtri offers various indicator designs, including vacuum, pressure, and differential pressure indicators, providing visual, electrical, or both types of signals, with electronic models available for differential indicators.

Types of Indicators

Vacuum Indicators: Used on suction lines to measure downstream pressure, with standard R 1/4” EN 10226 connections.
Barometric Indicators: Used on return lines to measure upstream pressure, with standard R 1/8” EN 10226 connections.
Differential Indicators: Used on pressure lines to measure pressure differences, with standard G 1/2” connections and stainless steel options.

Indicator Features
Indicators come in visual, electrical, and electronic configurations, providing warnings at 75% clogging and alarms when fully clogged. They are compatible with mineral oils and synthetic fluids, adhering to ISO 2943 standards.

Technical Specifications

Materials: Made from brass, nylon, and NBR seals.
Pressure Settings: Vacuum indicators set at -0.21 bar ±10%, pressure indicators up to 40 bar, proof pressure at 60 bar.
Temperature Range: Operate from -25°C to +80°C.
Electrical Data: Various resistive loads and connections, protection up to IP 65.

Ordering Information
Indicators are categorized by series (VE, VL, VV) and type, with options for connection sizes, seals, thermostats, and electrical connections. Custom options available upon request.

Pressure Indicators Overview
1. General Specifications
Designed for various conditions, compatible with mineral oils and synthetic fluids per ISO 2943 standards.
2. Electrical Pressure Indicators
Brass body, nylon base-ring, silver contact, HNBR seals, max pressure 10 bar, proof pressure 15 bar, max temperature +100°C, IP 65 protection.
3. Electrical/Visual Pressure Indicators
Brass body, nylon parts, NBR seals, max pressure 40 bar, proof pressure 60 bar, temperature -25°C to +80°C, IP 65 protection.
4. Radial and Axial Pressure Gauges
Painted steel case, max static pressure 7 bar, fluctuating pressure 6 bar, short time pressure 10 bar, temperature -40°C to +60°C, accuracy class 2.5, IP 31 protection.
5. Visual Pressure Indicators
Brass body, nylon parts, NBR seals, max pressure 10 bar, proof pressure 15 bar, temperature -25°C to +80°C, IP 45 protection.
6. Electrical Differential Indicators
Brass body, nylon parts, HNBR and FPM seals, max pressure 420 bar, proof pressure 630 bar, burst pressure 1260 bar, temperature -25°C to +110°C, IP 66 protection.
7. Ordering Information
Available in various series and configurations, including electrical, visual, and differential types.
8. Notes
Data are guidelines, subject to change based on technical or commercial requirements.

Overview
The document details specifications and technical data for differential indicators in hydraulic systems, compatible with various fluids per ISO 2943 standards.

1. Specifications

Materials: Brass or stainless steel (AISI 316L), internal parts of brass, nylon, or aluminum, seals of HNBR, FPM, or MFQ.
Pressure Ratings: Max working pressure 420 bar, proof pressure 630 bar, burst pressure 1260 bar.
Temperature Range: -25°C to +110°C.
Fluid Compatibility: Suitable for mineral oils, synthetic fluids, HFA, HFB, HFC fluids.

2. Electrical Data

Resistive Load: Varies by model, e.g., 0.2 A / 115 VDC, 0.8 A / 24 VDC.
Connections: Standards include EN 175301-803 and M12 IEC 61076-2-101.
Protection Degree: IP 65 to IP 69K, depending on model.

3. Indicator Types

Electrical Differential Indicator: Provides electrical signals based on pressure differences.
Electrical/Visual Differential Indicator: Combines electrical output with visual indicators.
Visual Differential Indicator: Offers visual indication of pressure differences, with manual or automatic reset options.
Electronic Differential Indicator: Features digital outputs and thermal lockout settings.

4. Available Settings
Pressure settings range from 1.2 bar to 9.5 bar, with a tolerance of ±10%.

5. Ordering Information
Guide on ordering different series of indicators, specifying options for thermostats, electrical connections, and seal types.

6. Additional Notes
Data are guidelines, subject to change based on technical or commercial requirements. Product colors are illustrative.

Catalog excerpts

CLOGGING INDICATORS Int r oduct ion Filter elements are efficient only if their Dirt Holding Capacity is fully exploited. This is achieved by using filter housings equipped with clogging indicators. These devices trip when the clogging of the filter element causes an increasing in pressure drop across the filter element. CLOGGING INDICATORS The indicator is set to alarm before the element becomes fully clogged. MP Filtri can supply indicators of the following designs: • Vacuum switches and gauges • Pressure switches and gauges • Differential pressure indicators These type of devices can be provided with a visual, electrical or both signals. The electronic model (only available for differential type indicators) with warning signals (75% of clogging) and alarm (clogging).

Open the catalog to page 1

Su i ta b l e i n di c a t o r t yp e s VACUUM INDICATORS Vacuum indicators are used on the Suction line to check the efficency of the filter element. They measure the pressure downstreamB the filter element. of B B Standard items are produced with R 1/4” EN 10226 connection. Available products with R 1/8” EN 10226 to be fitted on MPS series. B B B 2 2 1 1 3 BAROMETRIC INDICATORS Pressure indicators are used on the Return line to check the efficency of the filter element. They measure the pressure upstream of the filter element. Standard items are produced with R 1/8” EN 10226 connection. B DIFFERENTIAL...

Open the catalog to page 2

Quick r efer ence guide ELECTRICAL INDICATOR ELECTRICAL/VISUAL INDICATOR MPF - MPT with bypass 1,75 bar MPH with bypass 1,75 bar MPF - MPT with bypass 3 bar MPH with bypass 2,5 bar FRI 255 RF2 250 ELECTRONIC INDICATOR Filter series VISUAL INDICATOR Return filters Return/Suction filters MRSX 116 - 165 - 166 Suction line MRSX 116 - 165 - 166 Return line CLOGGING INDICATORS

Open the catalog to page 3

Quick r eference guide ELECTRICAL INDICATOR ELECTRICAL/VISUAL INDICATOR ELECTRONIC INDICATOR FZB 039 FZM 039 FZP 039 - 136 FZH 010 - 011 - 039 FZD 051 With bypass valve Filter series VISUAL INDICATOR CLOGGING INDICATORS Stainless Steel High Pressure In-Line filters

Open the catalog to page 4

Materials: • Body: • Internal parts: • Seals: Technical data: • Indicator type: • Setting pressure: • Max working pressure: • Proof pressure: • Working temperature: • Compatibility with fluids: Electrical data: • Resistive load: GREEN LAMP Technical data: • Indicator type: 1 • Setting pressure: 2 • Max working pressure: • Proof pressure: • Working temperature: • Compatibility with fluids: Electrical data: • Resistive load: 3 Brass Brass - Nylon NBR Technical data: 1 • Indicator type: 2 • Setting pressure: • Max5working pressure: • Proof pressure: • Working temperature: • Compatibility with fluids:...

Open the catalog to page 5

YELLOW background GREEN background HYDRAULIC SYMBOL Axial Vacuum Gauge Materials: • Case: • Window: • Dial: • Pointer: • Pressure connection: • Pressure element: Painted Steel Clear plastic Painted Steel Painted Aluminium Brass Bourdon tub Cu-alloy soft soldered Technical data: • Indicator type: • Max working pressure: Axial vacuum gauge Static: 7 bar Fluctuating: 6 bar Short time: 10 bar From -40°C to +60°C • Working temperature: • Compatibility with fluids: Mineral oils, Synthetic fluids HFA, HFB, HFC fluids in according to ISO 2943 cl. 2.5 • Accuracy class: • Protection degree: IP 31 in according...

Open the catalog to page 6

VACUUM INDICATORS The data in this publication are purely guideline. MP Filtri reserves the right to make changes to the models described herein at any time it deems fit in relation to technical or commercial requirements. The colours of the products shown on the cover are purely guideline. Copyright. All rights reserved.

Open the catalog to page 7

Electrical indicator Electrical/Visual indicator Visual indicator Without thermostat 6 - Electrical connection (excluded for VV) VEA series VV series Axial vacuumeter A R 1/4” EN 10226 connection B Axial vacuumeter R 1/8” EN 10226 connection Radial vacuumeter R 1/4” EN 10226 connection Radial vacuumeter R 1/8” EN 10226 connection VLA series EN 175301-803 clear connector 51 with 24 V lamps 52 EN 175301-803 clear connector with 110 V lamps EN 175301-803 clear connector with 230 V lamps M12 IEC 61076-2-101 clear connector with 24 V lamps MP Filtri standard Customer request 3 - Setting pressure VEA...

Open the catalog to page 8

Materials: • Body: • Internal parts: • Seals: Brass Brass - Nylon NBR Technical data: • Indicator type: • Max working pressure: • Proof pressure: • Working temperature: • Compatibility with fluids: Electrical data: • Resistive load: Materials: 4 • Body: • Internal parts: • Seals: GREEN LAMP Brass Brass - Nylon HNBR Electrical data: • Resistive load: • Electrical connections: • Protection degree: BROWN YELLOW - GREEN Technical data: • Indicator type: • Max working pressure: • Proof pressure: • Working temperature: • Compatibility with fluids: Electrical data: • Resistive load: • Protection degree:...

Open the catalog to page 9

Materials: • Body: • Base - Ring: • Contact: • Seals: Brass Nylon Silver HNBR Technical data: • Pressure switch type: • Pressure setting: • Working pressure: • Proof pressure: • Max working temperature: • Compatibility with fluids: Electrical data: • Electrical condition: C • Resistive load: • Electrical connections: • Thermostat condition: • CE certification N.C. • Protection degree: Electrical pressure switch 2,5 bar ±10% 10 bar 15 bar +100°C Mineral oils, Synthetic fluids HFA, HFB, HFC fluids in according to ISO 2943 ELECTRICAL SYMBOL Normally opened single contact 0,5 A / 48 VDC 10 - AMP...

Open the catalog to page 10

Electrical/Visual Pressure Indicator Materials: • Body: • Internal parts: • Seals: Brass Brass - Nylon NBR Technical data: • Indicator type: • Max working pressure: • Proof pressure: • Working temperature: • Compatibility with fluids: HYDRAULIC SYMBOL Electrical/Visual pressure indicator 40 bar 60 bar From -25°C to +80°C Mineral oils, Synthetic fluids HFA, HFB, HFC fluids in according to ISO 2943 Electrical data: • Resistive load: GREEN LAMP • Electrical connections: 3 • Protection degree: 0,4 A /RED VDC 24 LAMP 71 - M12 IEC 61076-2-101 (24 VDC lamps) IP 65 in according to EN 60529 GREEN LAMP...

Open the catalog to page 11