Metso Consistency Sampler – Metso Novevalveproducts.metso.com/documents/cct/products/Metso_Nove...1.Introduction 1.1.Generaldescription Metso Consistency Sampler (Metso Nove) is

Metso Consistency Sampler– Metso Nove

Installation & Owner’s ManualK10195 V1.1 EN

Table of contents

Warnings & safety information

Recycling and disposal

Introduction 71.

General description..........................................71.1.Types and applications.....................................71.2.

Installation 92.

Installation site and dimensions.......................92.1.Mounting with clamp coupling (Nove S).........112.2.Mounting with thread coupling (Nove T)........112.3.Mounting with flanged coupling (Nove F).......122.4.Sample discharge tube..................................122.5.Water flushing connection..............................122.6.Installing compressed air regulating valve.....132.7.Closed/open detector.....................................132.8.

Sampling 153.

General instructions.......................................153.1.Adjusting the sample discharge rate..............153.2.Procedure.......................................................163.3.Automatic sample taking................................163.4.

Technical specifications

Spare parts

Installation & Owner´s Manual, K10195 V1.1 EN3Metso Consistency Sampler


Warnings & safety information

Always check input voltage & frequency beforemaking any connections.Incorrect connections will damage the equipment! Always follow the ap-plicable electric safety regulations in all installation work!

Always make sure that the process pipe or chest is unpressurized andempty.

While taking a sample: Do not stand at close proximity to the sampleoutlet pipe or discharge tube while sampling! Especially when taking asample from a hot pressurized process line, watch out for dischargingsteam and hot sample.


Recycling and disposal

When sorted by material, nearly all parts of the device can be recycled.A materials list is delivered with the device. Upon request, the manufac-turer will provide more detailed instructions for recycling and disposal.

Used devicesmay also be returned to themanufacturer for recycling anddisposal against a separate fee.


1. Introduction1.1. General descriptionMetso Consistency Sampler (Metso Nove) is designedto extract a pulp sample from a process pipe. It is suitedfor all screened chemical and mechanical pulps and forrecycled fiber pulps at low and medium consistencyranges. Metso High Consistency Sampler (Metso NoveH) is recommended for high consistency pulps, un-screened pulp and long fiber pulps.

The sampler head is shaped and dimensioned to en-sure a representative sample. The head reaches suffi-ciently far into the process pipe, past the water layerflowing along the pipe wall.

The interior of the sampler can be flushed with waterafter sample taking, so as to prevent any accumulationof drying pulp. Since the sampling valve shut-offmechanism is at the head of the sampler, the devicewill not get blocked even during long duty intervals.

The shut-off mechanism does not contain any wear-ing parts, such as rubber seals.

1.2. Types and applicationsMetso Nove is available in three types, depending onthe mounting method:– clamp-mounted (Nove S),– thread-mounted (Nove T) and– flange-mounted (Nove F).

All types are available with either manual or pneu-matic actuator.

For more information, see Technical specifications.

Manually operated sampler (Fig. 1) is suitable foreasily accessible locations. The pneumatically operatedtype (Fig. 2) is also suitable for locations of difficultaccess.

The pneumatically operated sampler is controlledwith a control valve mounted close to the sampler, orthrough remote control. The pneumatically operatedtype can also be used for automatic sampling.

Material options for parts in constant contact withthe process medium include AISI 316L and Titanium.The flange-mounted model (Nove F) has fiberglass-reinforced plastic process coupling.– AISI 316L is suited for the majority of applications.– Titanium is recommended for bleaching stages.

Fig. 1. Metso Nove sampler, manual.

Fig. 2. Metso Nove sampler, pneumatic.


Notes


2. Installation2.1. Installation site and dimensionsThe installation space required for each sampler typeis shown in Fig. 1 and 2.

The sampler should be installed in such a place thata representative sample is obtained and the delaybetween consistency transmitter and sampling point isas short as possible. Suitable mounting locations areshown in Fig. 3 and 4.

When the sampler is installed immediately after astock pump, it should be mounted as shown in Fig. 3,on the side with regard to the pump.

There should be a 45° angle between the pump shaftand sampler on the side where the pulp flow leaves thepump.

NOTE: Observe safety requirements when installing theprocess coupling and sampler! Installation must be car-ried out by a qualified, experienced person.

NOTE: If the mounting location is not easily accessible,a service platform should be constructed to ensure ac-cess to the device.

394 mm (15.51")

124mm

(4.88")

191 mm (7.51")

290mm

(11.41

")

Fig. 1. Dimensions, Metso Nove manual.

385 mm (15.16")

191 mm (7.52")

113 mm(4.45")

78 mm(3.07")

Fig. 2. Dimensions, Metso Nove pneumatic.


Flushingwater

Dischargepipe

Novepneumatic

Novemanual

Discharge pipe

Flushingwater

FunnelFunnel

To sewer To sewer

Fig. 3. Metso Nove (pneumatic and manual) mounting on vertical pipe.

Horizontal pipe

Verticalpipe

* 400 mm

Consistency transmitteron opposite side

Novepneumatic

FLOW

Fig. 4. Metso Nove (pneumatic) mounting on horizontal pipe. * = Distance depending on process data and trans-mitter type.


2.2. Mounting with clamp coupling (Nove S)Make a hole to the process pipe, hole diameter 50 mm(2"), and prepare it for welding (V-groove). Insert thecoupling to the hole so that edges A are flush with theinside surface of the pipe. Then weld the coupling tothe pipe as shown in Fig. 5.

Note that it is not necessary to machine the straightedge of the process coupling into a curve shape tomatch the shape of the pipe.

When the coupling has been welded in place, placethe PTFE seal in its groove on the coupling. Then insertthe sampler and fasten it with the clamp. Tighten theclamp screws to a torque of 6.5 Nm.

2.3. Mounting with thread coupling (Nove T)Make a hole to the process pipe and prepare it forwelding (V-groove). The diameter of the hole shouldbe approximately 1 mm (0.04") larger than the outsidediameter d of the coupling. Weld the coupling to thepipe as shown in Fig. 6.

When the coupling has been welded in place, applylocking medium (for example Loctite 572) to the threadon the sampler tip. Then screw the sampler manuallyinto the coupling. When the sampler is fully inserted,the discharge tube must point down.

25 mm (1")

Ø25 mm (1")Ø49 mm (1.9")A

A

50mm

(2")

Ø40

mm

(1.57")

Fig. 5. Process coupling Metso Nove S.

d

35 mm (1.4")

40mm

(1.57")

50mm

(2")

Fig. 6. Process coupling Metso Nove T.


2.4. Mounting with flanged coupling (Nove F)Make a hole to the process pipe for the fiberglass-rein-forced plastic coupling, and glue the coupling in posi-tion as shown in Fig. 8.

2.5. Sample discharge tubeA plastic discharge tube is included in the sampler de-livery. Attach the tube (A) to the sampler with hoseclamps (B) as shown in Fig. 9.

In case the sampler is installed in a location that isnot easily accessible, for example very high up, use alonger discharge tube or a metal pipe. If a metal pipeis used, the connection to the sampler should be madewith a section of flexible plastic tube to prevent thetransmission of vibration.

Below the sampling point, install a funnel (Fig. 7)with a pipe leading to the closest sewer. To preventpulp overflow and splashing, use at least diameter 60mm (2.36") pipe for the purpose.

NOTE: The funnel in not included in delivery.

2.6. Water flushing connectionThe sampler should be fitted with a flushing waterconnection to prevent clogging and to ensure represen-tative samples. Flushing is not necessary in cases wherethe drying and accumulation of pulp inside the deviceis not a problem, or where sample representativenessis not a critical factor.

The sampler has an R1/4" flushing connector (Fig.9, C) for the connection of a pressurized water supply.The water supply must be provided with a manual shut-off valve (not included in delivery).

NOTE: Flushing with water is recommended in all cases.

Pressure waterconnection

Ø300150 (5.9")

150 (5.9")

60 (2.36")Ø60

Ø13.5

Circular pressure waterpipe with 22 pieces of3 mm water jet holes

Wall thickenessabout 2 mm

Fig. 7. Recommended overflow funnel, dimensions.

60 mm (2.36")

Ø40

mm

(1.57")

Ø150 mm(5.90")

Ø110mm

(4.33")

Ø18 mm(0.71") (4x90°)

Glueing

Fig. 8. Process coupling Nove F.

Fig. 9. Sample discharge tube: A. tube, B. hose clamp,C. flushing connector.


2.7. Installing compressed air regulating valveMount the manually operated compressed air valve(Fig. 10) with two M6 screws on a steady base near thesampler.

Attach the warning plate supplied for the regulatingvalve at close proximity to the valve, where it will beeasy to see.

Dimensions and pneumatic connections, see Fig. 11& 12.

Fig. 10. Manually operated compressed air valve.

68 mm (2.68")48 mm (1.89")

32mm

(1.26")

Ø7 mm(0.28")

91 mm (3.58")45 mm (1.77")

2 4

3 1 5Compressed airsupply max. 8 bar

1/8"

Fig. 11. Compressed air regulating valve, dimensionsand connections.

Fig. 12. Manually operated air regulating valve, airconnections.

2.8. Closed/open detectorNove P (pneumatic) is available with a limit switchthat provides a binary signal to the system from thesampling moment (Fig. 13).

The sampler is delivered with the limit switch in-stalled. Test the operation of the switch by opening andclosing the sampler, and adjust the position of theswitch if necessary.

Specifications:– Magnetoresistive measuring principle– Ambient temperature -5…+70 °C (+23…158 °F)– Switch output: non-contacting 2-wire– Switching element function: normally open contact– Max. output current 80 mA– Max. contact rating DC 2.4 W– Operating voltage range DC 8–30 V– Polarity protected for all electrical connections– Electrical connection: 2-core cable; see Fig. 14.

Fig. 13. Metso Nove with detector.

Fig. 14. Connection of limit switch.


Notes


3. Sampling3.1. General instructionsUse at least 1 L sample vessel equipped with a lid.Transport the sample vessels in a basket suitable forthe purpose. Before taking consistency samples, makesure that the consistency level stays as stable as pos-sible.

To get a representative average consistency samplefrom the process we recommended taking 3 to 5samples at e.g. 30 second intervals.

This is dependent on the importance of the processpoint and what the sample(s) is to be used for (calibra-tion, offset adjustment, follow up, etc.). Do not makean offset adjustment on any consistency transmitterbased on a single laboratory sample. A single sampleis not accurate enough for that purpose; see TAPPIT240.

The laboratory will then analyze the consistency ofeach sample separately.

Another method to obtain a good average consist-ency sample is to run out 5 to 10 litres of pulp at a timeand to take a sample from this amount for laboratoryanalysis in accordance with the TAPPI T240 standard.The pulp should be well mixed when taking the samplefrom the large vessel.

3.2. Adjusting the sample discharge rate1. Adjust the retaining nut (Fig. 1, part A) and adjust

the valve stroke for 1.0 to 1.5 L/s sample dischargerate. If the valve stem is adjusted for maximumopening, the discharge rate may also be less than1 L/s.

Fig. 1. Metso Nove, adjusting the retaining nut.


3.3. ProcedureSee Fig. 21. Write down the transmitter consistency readings.2. Open the sampler fully and wait for a stable flow.3. Insert the sample collecting vessel (use a 1 L cup)

into the flow with a steady movement. Fill up (notfully, 0.7 - 0.8 L is enough). Remove the vesselwith a steady movement from the pulp flow, andfinally close the sampler.

4. Close the sample vessel tightly with a lid. Writethe transmitter tag number, transmitter consistencyreading, sampling date and time on a sticker andattach it to the sample vessel.

5. Open the water valve and clean the sampler. Re-move any splashes.

6. Take the sample to the laboratory immediately foranalysis.

Fig. 2. Taking a sample.

3.4. Automatic sample takingMetso Nove pneumatic can be used for automaticsample taking, for instance when the average consist-ency at a sampling point must be observed over a spe-cific period of time. Metso Nove discharge tube is thendirected to a large-volume receptacle equipped with acover.

NOTE: Flushing cannot be used in this case. However,the pulp will not dry in the channels because the end ofthe discharge tube is in a covered receptacle and underthe surface of the sample pulp.

The sampling times and sample volumes can be de-termined with a timer through a solenoid valve or withremote control.

Adjustable restrictors must be used at the exhaustair side to attenuate the piston stroke.


1 (2)

Metso Consistency Sampler(Metso Nove) Technical specification

© Metso Automation Manufacturer reserves the right to changes without prior notice.

- Metso Consistency Sampler – Metso Nove – has beendesigned for controlled, safe sampling of wood pulp.

- The head reaches past the water layer flowing alongthe pipe wall, and is shaped to ensure arepresentative sample.

- Shut-off mechanism includes no wearing parts and isassembled in the sampler head to prevent blockagesduring duty intervals; water flushing gives additionalreliability.

- If pulp contains knots and/or shives, Nove H sampleris recommended instead!

ApplicabilityConsistency range ........... 0–8 % Cs

MaterialsParts in constant contactwith process medium ....... see type specification chartOther parts ...................... AISI 316LPneumatic cylinder .......... aluminum alloyPiston shaft ..................... hard-chromed steel

Supply air pressure- When pressure is lost, a return spring in pneumatic

actuator shuts the valve.P min. ............................. 1/3 x process pressureP max. ............................ 10 bar (145 psi)

Process conditions- When process pressure is > 10 bar, the strength of the

connection between process coupling and process pipemust be calculated separately in accordance with thepressure endurance of the pipework; connection mustbe reinforced if necessary.

Pressure minimum ........... see Graph 1Pressure maximum .......... 25 bar (350 psi)

For fiberglass-reinforced plastic coupling:- Pressure max. ............ 16 bar (232 psi)

Weight Manual PneumaticNove S ......... 2.0 kg (4.4 lbs) ...............2.2 kg (4.9 lbs)Nove T ......... 1.8 kg (4.0 lbs) ...............2.0 kg (4.4 lbs)Nove F ........ 5.1 kg (11.2 lbs) ............. 5.3 kg (11.9 lbs)

Sample discharge rate: see Graph 2- Pulps with Cs = 0…4 % Cs: Long & short fiber chemical

pulp, Groundwood pulp, Recycled fiber pulp

- Pulps with Cs = 0…2 % Cs: TMP, CTMP

At higher consistencies the sample discharge rate will belower.

0 1 765432 8

3

2

1

0

P/bar

Cs%

Graph 1: Minimum process pressure at differentconsistencies.

0.5 1.5 3.0 4.5

2.62.42.22.01.81.61.41.21.00.80.60.4

p/bar

Q dm3/sec

Graph 2: Maximum sample discharge rate at differentprocess pressures with maximum valve opening.

2 (2)

Metso Nove Technical specification


Type specification chart

Metso Nove

Connection typeS Clamp (NS40)T Thread (1 1/2" NPS)F Flange

Closing mechanism material– only parts in constant contact with processmedium; other parts always AISI316L2 AISI316 L6 Titanium ASTM B348 gr.2

Process coupling material2 AISI316 L4 SMO2546 Titanium ASTM B348 gr.2

ActuationM ManualP PneumaticOpen/close detector0 None1 Included in P1 models

Example: Metso Nove S22M0

Recommended modelsCode Clamp mounted MaterialK09947 S22 M0 2 = AISI 316LK09998 S22 P0 2 = AISI 316LK10248 S22 P1 2 = AISI 316LK10288 S66 P0 6 = TitaniumK10287 S66 M0 6 = TitaniumCode Thread mounted MaterialK09927 T22 M0 2 = AISI 316LK10240 T22 P0 2 = AISI 316LK10246 T22 P1 2 = AISI 316LCode Flange mounted MaterialK10295 F68 M0 6 = TitaniumK10296 F68 P0 6 = Titanium

- If other materials/combinations are required,please consult your Metso specialist!

DimensionsNove S22 P0 Nove S22 M0

1 (4)

Metso Nove Spare parts


No. Code Part pcs / assembly1 K09795 Valve spindle M, AISI 316L Clamp / thread connection,

manual models1

K10298 Valve spindle M, Titanium 12 K09867 Valve spindle P, AISI 316L Clamp / thread connection,

pneumatic models1

K09884 Valve spindle P, Titanium 13 K10303 Valve spindle F M, Titanium Flange connection, manual models 14 K10310 Valve spindle F P, Titanium Flange connection, pneumatic models 15 90740033 Compressed air cylinder P0 – when no open/close detector 1

90740037 Compressed air cylinder P1 – with open/close detector 16 K11459 Compression spring 17 K09807 Bearing bush 18 80011000 O-ring 1

K11404 Valve CLOSED/OPEN detector assembly 1K10701 Manual compressed air regulating valve 1Installation parts (not shown in the drawing; see Nove manual ch. 2)V552052 Shut-off plug NS 40 1K09865 Process coupling, clamp model, AISI 316L 1K09946 Process coupling, clamp model, Titanium 1K09840 Process coupling, NPT thread model, AISI 316L 1K10312 Process coupling, flange model, fiberglass 1K09863 Process sealing 1K11419 Mounting clamp set 1K11590 Closing flange set SS DN38 1K11591 Closing flange set TI DN38 1

2 (4)



Nove /Clamp model,manual

Nove /Clamp model,pneumatic

8 71 6

8 72 5

3 (4)



Nove /Threadmodel,manual

Nove /Threadmodel,pneumatic

8 7 61

2 8 7 5

4 (4)



Nove /Flangemodel,manual

Nove /Flangemodel,pneumatic

87

3

6

B

87

4 5

Metso Automation Inc., Kehräämöntie 3, P.O.Box 177, FI-87101 Kajaani, FinlandTel. +358 20 483 120, fax +358 20 483 121, www.metso.com/automation

This document discloses subject matter in which the manufacturer has proprietary rights. Neither receipt nor possession thereof confers or transfers any right to reproduce or disclose the document, any part thereof, any physical article or device, except by written permission from the manufacturer. Manufacturer reserves the right to alter the contents of this document without prior notice.

Copyright © July 2012Metso Automation Inc.Documentation: JT-Tieto Oy & Metso Automation

Documents

Metso Consistency Sampler – Metso Novevalveproducts.metso.com/documents/cct/products/Metso_Nove...1.Introduction 1.1.Generaldescription Metso Consistency Sampler (Metso Nove) is