Level - Flotech Controls · • Level gauge with 4-20mA transmitter suitable for temperature up to 200°C with special heat ... insulation measuring tube Remote Signal Transmitter

2Magnetic Type Liquid-Level Indicator

Level

MLG 28StandardIndicator

MLG 28Bi-colour Magnetic

Flap Indicator

3

FLOTECH CONTROLS PTE LTD

Magnetic Type Liquid-Level Indicator

Features• Different wetted part materials are available. For example Stainless Steel, PTFE and PVC• Little or no maintenance required and less risk of leakage than a sight glass• Add-on switches for alarms and level control• Add-on 4-20mA transmitter for continuous level control or remote indication• Level gauge with 4-20mA transmitter suitable for temperature up to 200°C with special heat

insulated cover on the measuring tube (see page 5)

Instrument Versions

Maximum Allowable Maximum Fluid

Operating Pressure** Temperature

MLG28/SS SS 316L PTFE SS 316 L 40 bar 200°C

MLG28/PTFE PTFE 40 bar 200°C

MLG28/PVC PVC PTFE PVC 6 bar 40°C

**Depending on material and flange pressure selection

Specifications

Accuracy ± 5 mm of actual level

Maximum Fluid Viscosity 5000 cP

Maximum Allowable Operating Pressure 40 bar - depend on material, flange pressure rating

(higher pressure on request)

Measuring Range 0.3 to 6m (for SS and PTFE version)

0.3 to 3m (for PVC version)

Maximum Fluid Temperature Standard: -40°C to +200°C (SS Version)

Option: -40°C to +400°C (Consult Flotech)

Minimum Fluid Density (Float) ≤0.55 kg/l (SS/PTFE) , ≤0.85 kg/l (PVC)

Process Connection DN15...50 PN 16/40; 1/2”...2” ANSI 150/300lbs, others on request

Float Material 316 SS, PVC, PTFE, Titanium

Gasket Material PTFE (standard), Steel*

Flange Material 316 SS, PVC

Indicator Type

Mounting Position Vertical - side/side, top/bottom and others on request

Ingress Protection (Indicator) IP 68 (Equivalent to NEMA 6)

Optional Features Limit switch (bi-stable switch)Remote signal transmitter (4-20mA)Isolation valvesVent / drain valves

*Selection for operating temperature above 200°C

Version Flange Gasket Measuring Tube

SS304L - with PTFE Liner

SS304L - with PTFE

Liner

-20°C to +200°C (PTFE Version)

Bi-colour flap casing House in a borosilicate glass welded-sealed under partial vacuum

Bi-colour flap or float* indicator

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Model - LS18MCMaximum Switching 1000 VA (Isolation switching) 4A,Capacity 250V (Amplifier required)Ambient Temperature -20°C to 120°CProcess Temperature <250°CProtection Category IP 65 (NEMA 4/4x)Cable Entry M20 x 1.5Housing Material PolycarbonateWeight 130g

Model - BRXMaximum Switching Capacity 20 VA 1.5 A, 250 VACAmbient Temperature -20°C…60°CProcess Temperature <200°CProtection Category IP 65 (NEMA 4/4x)Cable Entry M25 x 1.5Housing Material Aluminum (Ex-proof with NEPSI

approval EEx d IIC T6)Weight 1200g

Limit Switch (Option)For liquid level control, level switch can be easily retrofitted onto measuring tube and are adjustable over the wholemeasuring range. These limit switches are bi-stable contact that are actuated directly by the magnets in the float. Theswitching state is maintained until the magnet system again actuates the limit switch in the opposite direction.

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Remote Signal Transmitter - RST (Option)The MLG 28 can be retrofitted with an electrical remote signal transmitter.

The transmitter consists of a tube that is clamped onto the measuring tube and a resistance to current converter.Internally, the tube is fitted with reed contacts and a series of resistors. The magnet in the float of the MLG 28 actuates thereed switches according to the liquid level and thus changes the value of the resistor chain as a function of the liquidlevel.

Resistance is converted to a standard 4-20mA current output.

Vent Plug

Drain plug

Model - RSTMaximum Length 6000mmAccuracy ± 10mmMaximum Ambient Temperature 60°CCurrent Output 4 to 20 mA (2 wire)Power Supply 24 VDCMaximum Load 500 OhmsProcess Temperature -20°C to +200°C

MLG28 with special heatinsulation measuring tube

Remote Signal Transmitter(RST)

6



X = 134 (for < DN32)X = 156 (for >DN 32)

Dimensions in mm

MLG28/WN/SS MLG28/PVC

MLG28/SS/PTFE

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MLG28

PVC

G

B

2

(Example)

S5

MLG28

VersionSS - SS (Standard)PVC - PVCPT - PTFE lined & SS Float with PTFE coatingSST - Stainless Steel and Titanium FloatSSP - Stainless steel & SS Float with PTFE coating

Process Connection Type & SizeF - DN15 PN40, WN flangeG - DN20 PN40, WN flangeH - DN25 PN40, WN flangeV - DN32 PN40 WN flangeI - DN40 PN40, WN flangeJ - DN50 PN40, WN flangeL - ¾” ANSI 150 lbs, WN flangeM - 1” ANSI 150 lbs, WN flangeN - 1½” ANSI 150 lbs, WN flangeO - 2” ANSI 150 lbs, WN flangeP - ½” ANSI 300 lbs, WN flangeQ - ¾” ANSI 300 lbs, WN flangeR - 1” ANSI 300 lbs, WN flangeS - 1-½” ANSI 300 lbs, WN flangeT - 2” ANSI 300 lbs, WN flangeW - 2" ANSI 600 lbs, WN flangeX - ½" ANSI 600 lbs, WN flangeY - ¾" ANSI 600 lbs, WN flangeZ - 1" ANSI 600 lbs, WN flangeU - 50A JIS 10K

IndicationB - Bi-Colour Flap Graduation (m/cm)BP - Bi-Colour Flap Graduation (% percentage)BF - Bi-Colour Flap Graduation (inch/feet)BV - Bi-Colour Flap Graduation (volume)F - Float Indicator Graduation (m/cm)FP - Float Indicator Graduation (% percentage)FF - Float Indicator Graduation (inch/feet)FV - Float Indicator Graduation (volume)

Gasket0 - PTFE (Standard)2 - Steel Gasket - For High Temp Application (up to 400 °C)Other upon request

Limit Switch0 - WithoutS1 - With Limit Switch (No.) (LS18MC)S2 - With 2 Limit Switches (No.) (LS18MC)S3 - With 3 Limit Switches (No.) (LS18MC)S4 - With 4 Limit Switches (No.) (LS18MC)S5 - With 5 Limit Switches (No.) (LS18MC)S1 EX - Explosion Proof Limit Switch (BRX)S2 EX - With 2 Explosion Proof Limit Switch (BRX)S3 EX - With 3 Explosion Proof Limit Switch (BRX)S4 EX - With 4Explosion Proof Limit Switch (BRX)S5 EX - With 5 Explosion Proof Limit Switch (BRX)

MLG28

Continue to the next page

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(Example) Remote Signal Transmitter (RST)0 - WithoutRST - RSTRSTEX - RST Explosion Proof Version

Drain Port0 - without drain1 - ½" NPT2 - ¾" NPTA - DN15 PN40B - DN25 PN40C - ½" ANSI 150 lbsD - ¾" ANSI 150 lbsE - 1" ANSI 150 lbsF - ½" ANSI 300 lbsG - ¾" ANSI 300 lbsJ - 1" ANSI 300 lbs

Vent Port0 - without drain1 - ½" NPT2 - ¾" NPTA - DN15 PN40B - DN25 PN40C - ½" ANSI 150 lbsD - ¾" ANSI 150 lbsE - 1" ANSI 150 lbsF - ½" ANSI 300 lbsG - ¾" ANSI 300 lbsJ - 1" ANSI 300 lbs

C-C Length (Customised length)Please indicate your required length in mm or inch

0

1

1

0

Ordering Code: (Example)

MLG28 PVC G B 2 S5 0 1 1 0

NOTE

NOTE

NOTE

SALES AND SERVICECENTRES

REGIONAL NETWORK

MALAYSIAM - FLOTECH CONTROLS SDN BHDNo. 20, Jalan TP 7/6Taman Per industr ian UEP Subang Jaya40400 Shah AlamSelangor Darul EhsanMalaysiaTel : (60) 3 5192 5325/6Fax: (60) 3 5192 5327Emai l : [email protected]

INDONESIAPT FLOTECH CONTROLS INDONESIAKomplek Rukan Artha Gading Niaga Blok F/7, J ln. Boulevard Artha Gading Jakarta 14240, IndonesiaTel : (62) 21 4585 0778Fax: (62) 21 4585 0779Emai l : [email protected]. id Branch Off ice PekanbaruTel : (62) 761 674 839 Fax : (62) 761 678 295

CHINAFLOTECH CONTROLS (SHANGHAI) CO., LTDB-C, Songhu Industr ia l Zone, No.3 Yanghebang Road, Songj iang High-tech Park, Shanghai , P.R.C (201615)Tel : (86) 21 64593908Fax: (86) 21 64595018Emai l : info@flotechshanghai .com

SINGAPORE - HEAD OFFICEFLOTECH CONTROLS PTE LTD438 Tagore Industr ia l AvenueSingapore 787814Tel: (65) 6553 0366Fax: (65) 6553 0828Emai l : [email protected] te: www.f lotech.com.sg www.isolv.bizReg. No.198204457H

24_0314

福德控制仪器（上海）有限公司地址: 上海松江高科技园区洋河浜路3号松沪工业小区B区C栋邮政编码: 201615电话: (86) 21 64593908传真: (86) 21 64595018电子邮件: info@flotechshanghai .com

Certificate SG95/04276 Certificate SG13/04547

Level - Flotech Controls · • Level gauge with 4-20mA transmitter suitable for temperature up to 200°C with special heat ... insulation measuring tube Remote Signal Transmitter

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