Magnetrol Tuffy T31 Manuale utente

Side

Mounted

Float Level

Switch

Installation and Operating Manual

Tuffy®T3

iquid evel Controls

with Electric Switches

UNPACKING

Unpack the instrument carefully. Make sure all components

have been removed from the foam protection. Inspect all

components for damage. Report any concealed damage to

the carrier within 24 hours. Check the contents of the car-

ton/crates against the packing slip and report any discrep-

ancies to Magnetrol. Check the nameplate model number

to be sure it agrees with the packing slip and purchase

order. Check and record the serial number for future refer-

ence when ordering parts.

Cut and remove the plastic shipping straps on ﬂanged units.

MOUNTING

Nameplate:

- model number

- serial n°

- tag n°

2" NPT Tuffy External cage mounted TuffyFlanged Tuffy

Flanged

max nozzle length:

85 mm (3.35")

Field adjustable

differential

max nozzle length:

110 mm (4.35")

Interface

max nozzle length:

147 mm (5.80")

Threaded

max nozzle length:

84 mm (3.29")

Cage

mounted

Air

Oil

Water

ocking screw, loosen before removing cover

(refasten after replacing)

ocking screw, loosen

before removing cover

(refasten after replacing)

Cable entry should

always be pointing

down

Apply Teﬂon tape or

appropriate lubricant

Use wrench size 65 mm

1. Install a proper gasket.

2. Cut and remove the

shipping straps, slide

the control in the

nozzle and align the

bolt holes.

3. Cable entry should

always be pointing

down

4. Fasten bolts and

studs in a star pattern

Pressure

vessel

Drain valve

Cable entry

should

always be

pointing

down

Safety

check

valve

Shut-off

valve

Shut-off

valve

Note: min nozzle size is 3" SCH 80 (max nozzle lengths are speciﬁed as per this size)

0038

0344

These units are in conformity with the provisions of:

1.Directive 2014/34/EU for equipment or protective system intended for use in potentially explosive

atmospheres. EC-type examination certiﬁcate number ISSeP10ATEX032 (Ex d units) or

KIWA18ATEX0022X (Ex i units).

2.The PED directive 2014/68/EU (pressure equipment directive). Safety accessories per category IV

module B + D.

SPECIA CONDITIONS FOR ATEX INTRINSICA Y SAFE USE

When the product is installed in an area requiring EPL Ga and the enclosure is made of aluminium, all precautions shall be

taken in order to avoid all impacts or frictions which can result in the ignition of the potentially explosive atmosphere.

Install cage so that tappings

are within 3° of vertical in all directions.

WIRING

CAUTION: power must be switched OFF before wiring the unit.

Internal ground wire

use min. 14 AWG wire

External ground wire

Terminal connections

DPDT dry contact switch

with silver contacts

Terminal connections

DPDT dry contact switch

with gold contacts

Terminal connections

SPDT dry contact switch

with silver or gold contacts

Terminal connections

SPDT HS switch

with silver or gold contacts

TROUB ESHOOTING

Symptom Cause of malfunction / Action

Failure of the controlled equipment Check external causes ﬁrst:

eg. pump does not start, - blown fuses

signal lamps fail to operate etc... - tripped reset button

- open power switch.

- controlled equipment fails.

- defective wiring to level switch.

Check wiring as per wiring diagrams on page 3

Check actuating arm and magnet assembly

1. Remove switch mechanism

2. Check for wiring interference or binding of actuating arm. The switch and

magnet must move throughout its entire range of motion without interference.

3. Replace the switch mechanism in case of binding.

Check ﬂoat assembly

1. Remove the unit from service

2. Clean the mechanism if required

3. Tilt the ﬂoat, when the unit is limited by its motion:

check differential setting (for T3C units only) – see above

4. Replace the unit in case cleaning and/or resetting did not solve the problem.

Float magnet

Switch magnet

Non-magnetic ﬂoat

holder (pressure

boundary)

Magnet/Switch action

For T31-T35 / T3B units

CA IBRATION

Properly selected TUFFY units do not need any ﬁeld calibration.

For T3C: ﬁeld adjustable differential units

The Adjustable Differential Tuffy II, model T3C, may be set in the ﬁeld for one of a variety of level differentials. By speciﬁc place-

ment of the stops in the holes of the adjustment plate, the level differential may be changed.

To determine the differential

Example: T3C-C unit with stop holes Band G

1. Select the rising level of the upper stop:

example: upper stop = hole B: +85 mm

2. Select the falling level of the lower stop:

example: lower stop = hole G: -205 mm

3. Substract levels:

rising level / upper stop - falling level / lower

stop:

example: +85 mm - (-205 mm) = +290 mm

Example 2:T3C-8 unit: with stop holes Dand B:

+183 mm - (+115 mm) = 68 mm

Impossible stop hole combinations due to the diameter of the stem (of the ﬂoat):

Stop holes in mm (divide by 25,4 to obtain inches)

Upper stops

middle

Lower stops

Partnumber Level BCD K AE FGH J

T3C-4XXX-XXX Rising +47 +90 +124 +39 +104 +4 -37 n/a n/a -42 n/a

Falling +80 n/a n/a +84 n/a +38 -10 -47 -82 +4 -62

T3C-8XXX-XXX Rising +63 +131 +183 +51 +153 -3 -67 n/a n/a -75 n/a

Falling +115 n/a n/a +122 n/a +50 -25 -84 -136 -3 -106

T3C-CXXX-XXX Rising +85 +183 +259 +67 +215 -11 -105 n/a n/a -115 n/a

Falling +160 n/a n/a +170 n/a 66 -43 -128 -205 -11 -106

Aand B

Aand E

Aand H

Aand K

Band C

Band K

Cand D

Cand K

Cand

Dand Eand F

Eand H

Fand H

Fand J

Fand G

Jand G

PREVENTIVE MAINTENANCE

Periodic inspections are a necessary means to keep your level control in good working order. This control is a safety device

that protects the valuable equipment it serves. A systematic program of preventive maintenance should be implemented when

the control is placed into service. If the following instructions are observed, your control will provide reliable protection of your

equipment for many years.

What to do

1. Keep control clean.

Be sure the switch housing is always in place. This cover

is designed to keep dust and dirt from interfering with the

switch mechanism operation. In addition it protects

against damaging moisture and acts as a safety feature

by keeping bare wires and terminals from being exposed.

Should the housing cover become damaged or mis-

placed, obtain a replacement immediately.

2. Inspect switch mechanisms, terminals and connections

monthly.

Tuffy T3 level switches may sometimes be exposed to

excessive heat or moisture. Under such conditions insu-

lation on electrical wires may become brittle, eventually

breaking or peeling away. The resulting bare wires can

cause short circuits. Check wiring carefully and replace

at ﬁrst sign of brittle insulation.

Vibration may sometimes cause terminal screws to

loosen. Check all terminal connections to ensure that

screws are tight. Check wiring carefully and repair or

replace if necessary.

Note: It is recommended that spare switches, housing

covers and o-rings be kept on hand at all times.

3. Inspect entire Tuffy T3 unit periodically.

A periodic cleaning of the ﬂoat and counterweight assem-

bly will ensure continued free movement of the mecha-

nism.

What to avoid

1. NEVER leave the switch housing cover off of the control

longer than is necessary to make routine inspections.

2. NEVER place a jumper wire across terminals to “cut-out”

the control. If a jumper is necessary for test purposes,

ensure that it is removed before placing the control into

service.

3. NEVER attempt to make adjustments to or replace

switches without reading instructions carefully. When in

doubt, consult the factory or your local representative.

4. NEVER use in systems containing iron particles. The

magnet in the ﬂoat assembly can attract the particles and

become jammed.

5. NEVER put insulation over the switch housing.

SPECIFICATIONS

Description Speciﬁcation

Switch ratings Up to 10 A @ 240 V AC

Up to 6.0 A @ 24 V DC

Signal output Single SPDT or single DPDT contacts

Switch types Dry contact with silver or gold plated contacts

ermetically sealed for corrosive environment

Approvals ATEX II 1/2 G / IECEx Ex d IIC T6 Ga/Gb, ﬂameproof enclosure

ATEX II 1 G / IECEx Ex ia IIC T6 Ga

NEMA 4X/7/9, Class 1, Div 1, Groups B, C & D

Cable entries 3/4" NPT or M20 x 1,5

PHYSICA SPECIFICATIONS

E ECTRICA SPECIFICATIONS

Description Speciﬁcation

Measured variable Liquid level

Physical range Narrow differential: 13 mm (0.5")

Adjustable differential: up to 464 mm (18.26")

Interface Service Differential: 44 mm (1.72")

Interface: min S.G. difference between both liquids: 0,1

Ambient temperature -40 °C to + 70 °C (-40 °F to +160 °F)

Process temperature From -55 °C (-65 °F) up to 400 °C (750 °F) depending switch/housing selection

Process pressure Standard models: up to 49,6 bar (720 psi)

igh pressure models: up to 149 bar (2160 psi)

Wetted parts 316/316L (1.4401/1.4404) or astelloy C (2.4819)

Flange materials Carbon steel

316/316L (1.4401/1.4404) or Carbon steel with 316/316L (1.4401/1.4404) cladding

astelloy C (2.4819) or Carbon steel with astelloy C (2.4819) cladding

ousing materials Cast aluminium or cast iron

REP ACEMENT PARTS

¡¬

1X 74

2 3 8 9 10

Digit in partn°:

Partn°: Serial n°:

X = product with a speciﬁc customer requirement

See nameplate, always provide complete partn° and

serial n° when ordering spares.

EXPEDITE SHIP PLAN (ESP)

Several parts are available for quick shipment, within max. 1 week after factory receipt of purchase order, through the

Expedite Ship Plan (ESP).

Parts covered by ESP service are conveniently grey coded in the selection tables.

(1) Switch assembly

Digit 9 Replacement part

0 031-5144-001

1 031-5146-001

2 031-5144-002

3 031-5146-002

4 031-5145-001

6 031-5145-002

(2) Housing cover

Digit 10 Replacement part

1 or 3 004-9197-011

2, 4, N or R 004-9197-002

M or P 004-9197-005

Replacement part

(3) "O"-ring 012-2201-240

DIMENSIONS in mm (inches)

T31 and T35: threaded narrow differential

T31, T33 and T35: ﬂanged narrow differential

T32: ﬂanged high pressure narrow differential

112

(4.39)

211

(8.29)

(3.29)

T31: 91 (3.59)

T35: 85 (3.35)

T31: 220 (8.66)

T35: 200 (7.86)

2" NPT

Cable entry

112

(4.39)

211

(8.29)

(3.35)

T31/T33: 91 (3.59)

T35: 85 (3.35)

T31: 221 (8.72)

T33: 190 (7.50)

T35: 201 (7.92)

Cable entry

112

(4.39)

211

(8.29)

204

(8.02)

(3.35)

Cable entry

T3C: adjustable wide differential

112

(4.39)

209

(8.23)

Dimension "A"

Stem length (code 4): 95 (3.75)

Stem length (code 8): 190 (7.50)

Stem length (code C): 311 (12.25)

Stem length (code 4): 346 (13.62)

Stem length (code 8): 471 (18.54)

Stem length (code C): 629 (24.76)

Stem length (code 4): 327 (12.86)

Stem length (code 8): 422 (16.61)

Stem length (code C): 543 (21.36)

(3.35)

Cable entry

T3B: interface

209

(8.23)

112

(4.39)

(3.35)

448

(17.62)

172

(6.78)

Cable entry

DIMENSIONS in mm (inches)

MODE IDENTIFICATION

T31 Tuffy with 316/316L (1.4401/1.4404) ﬂoat - min S.G. 0,4 / max 49,6 bar (720 psi)

T32 Tuffy with 316/316L (1.4401/1.4404) ﬂoat - min S.G. 0,6 / max 149 bar (2160 psi)

T33 Tuffy with astelloy C (2.4819) ﬂoat - min S.G. 0,65 / max 49,6 bar (720 psi)

T35 Tuffy with 316/316L (1.4401/1.4404) ﬂoat - min S.G. 0,6 / max 124 bar (1800 psi)

T3B Interface Tuffy with 316/316L (1.4401/1.4404) ﬂoat - max 49,6 bar (720 psi)

T3C Adjustable diff. Tuffy with 316/316L (1.4401/1.4404) ﬂoat - min S.G. 0,78 / max 49,6 bar (720 psi)

T 03 complete code for TUFFY®T3

PROCESS CONNECTION – ASME Flanges

3A 3" 150 lbs RF ASME Flange

3B 3" 300 lbs RF ASME Flange

3C 3" 600 lbs RF ASME Flange

3D 3" 900 lbs RF ASME Flange

4A 4" 150 lbs RF ASME Flange

4B 4" 300 lbs RF ASME Flange

4C 4" 600 lbs RF ASME Flange

4D 4" 900 lbs RF ASME Flange

5A 5" 150 lbs RF ASME Flange

5B 5" 300 lbs RF ASME Flange

6A 6" 150 lbs RF ASME Flange

6B 6" 300 lbs RF ASME Flange

PROCESS CONNECTION – T READED

2N 2" NPT connection

PROCESS CONNECTION – EN Flanges

A1 DN 80, PN 16 EN 1092-1 Type B1

A2 DN 80, PN 25/40 EN 1092-1 Type B1

A3 DN 80, PN 63 EN 1092-1 Type B2

A4 DN 80, PN 100 EN 1092-1 Type B2

A5 DN 80, PN 160 EN 1092-1 Type B2

B1 DN 100, PN 16 EN 1092-1 Type B1

B2 DN 100, PN 25/40 EN 1092-1 Type B1

B3 DN 100, PN 63 EN 1092-1 Type B2

B4 DN 100, PN 100 EN 1092-1 Type B2

B5 DN 100, PN 160 EN 1092-1 Type B2

C1 DN 125, PN 16 EN 1092-1 Type B1

C2 DN 125, PN 25/40 EN 1092-1 Type B1

C3 DN 125, PN 63 EN 1092-1 Type B2

C4 DN 125, PN 100 EN 1092-1 Type B2

D1 DN 150, PN 16 EN 1092-1 Type B1

D2 DN 150, PN 25/40 EN 1092-1 Type B1

D3 DN 150, PN 63 EN 1092-1 Type B2

D4 DN 150, PN 100 EN 1092-1 Type B2

STEM EXTENSION LENGT FOR T3C - DIMENSION "A"

4 95 mm (3.75") stem extension / 346 mm (13.62") differential

8 190 mm (7.50") stem extension / 471 mm (18.54") differential

C 311 mm (12.25") stem extension / 629 mm (24.76") differential

NARROW DIFFERENTIAL UNITS - T31, T32, T33 AND T35

0 Standard level differential of 13 mm (0,5")

0,81 0,82 0,83 0,84 0,85 0,86 0,87 0,88 0,89 0,90 Speciﬁc Gravity

ABCDEFG JK Code

0,91 0,92 0,93 0,94 0,95 0,96 0,97 0,98 0,99 1 Speciﬁc Gravity

LMN P R S T U VW Code

SPECIFIC GRAVITY OF LOWER LIQUID FOR T3B

SEE PAGE 10

X = product with a speciﬁc customer requirement

SWITCH MECHANISMS

SWITC TYPE (see table below - "SWITC MEC ANISMS")

0 SPDT with silver contacts

1 DPDT with silver contacts

2 SPDT with gold plated contacts

3 DPDT with gold plated contacts

4 ermetically sealed, SPDT with silver contacts

6 ermetically sealed, SPDT with gold plated contacts

T 3 complete code for TUFFY®T3

MODE IDENTIFICATION

SEE PAGE 9

OUSING MATERIALS AND CABLE ENTRY

Consult factory for proper partnumbers for FM/CSA approved units

TUFFY® T3 is available with a selection of switch modules that vary in switch rating (Amp) and max process temperature

allowance. The max temperature is dependent upon the housing material selected.

Electric switch rating

Process temperature range

V AC V DC @ 40 °C (100 °F) ambient temp.

Code Contacts and type 120 240 24 120 Cast Iron Cast Aluminium

SPDT with silver contacts

10.0 10.0 6.0 0.6

-40 °C to +400 °C (-40 °F to +750 °F) -40 °C to +345 °C (-40 °F to +650 °F)

DPDT with silver contacts

10.0 10.0 6.0 0.6

-40 °C to +400 °C (-40 °F to +750 °F) -40 °C to +345 °C (-40 °F to +650 °F)

SPDT with gold plated contacts

0.1 - 0.1 -

-40 °C to +190 °C (-40 °F to +375 °F) -40 °C to +160 °C (-40 °F to +325 °F)

DPDT with gold plated contacts

0.1 - 0.1 -

-40 °C to +190 °C (-40 °F to +375 °F) -40 °C to +160 °C (-40 °F to +325 °F)

S SPDT with silver contacts

1.0 1.0 3.0 0.5

-55 °C to +400 °C (-65 °F to +750 °F) -55 °C to +345 °C (-65 °F to +650 °F)

S SPDT with gold plated contacts

0.5 0.5 0.5 0.5

-55 °C to +400 °C (-65 °F to +750 °F) -55 °C to +345 °C (-65 °F to +650 °F)

Cast aluminium, single 3⁄4" NPT cable entry, ATEX II 1/2 G / IECEx Ex d IIC T6 Ga/Gb

Cast iron, single 3⁄4" NPT cable entry, ATEX II 1/2 G / IECEx Ex d IIC T6 Ga/Gb

Cast aluminium, single M20 × 1,5 cable entry, ATEX II 1/2 G / IECEx Ex d IIC T6 Ga/Gb

Cast iron, single M20 × 1,5 cable entry, ATEX II 1/2 G / IECEx Ex d IIC T6 Ga/Gb

Cast aluminium, single 3⁄4" NPT cable entry, ATEX II 1 G / IECEx Ex ia IIC T6 Ga

Cast iron, single 3⁄4" NPT cable entry, ATEX II 1 G / IECEx Ex ia IIC T6 Ga

Cast aluminium, single M20 × 1,5 cable entry, ATEX II 1 G / IECEx Ex ia IIC T6 Ga

Cast iron, single M20 × 1,5 cable entry, ATEX II 1 G / IECEx Ex ia IIC T6 Ga

DESIGN CODE AND FLANGE MATERIAL

Design codes

ASME Flange material

Model Standard ASME B31.3 NACE

B31.3 & NACE

12––Carbon steel

T31/T32/T35 AEJNCarbon steel w. 316/316L cladding

T3B/T3C BFKP316/316L stainless steel

T33 CGLRCarbon steel w. astelloy C cladding

D MTastelloy C (2.4819)

X = product with a speciﬁc customer requirement

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