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PENBERTHY 

MODEL MGS-314 SERIES AND MGS-314D SERIES LEVEL CONTROL SWITCH

INSTALLATION, OPERATION AND MAINTENANCE INSTRUCTIONS

4.2 Mounting the switch 

Due to shipping vibration, it is possible the 
magnet toggle will not be in the 'normal' 
position for proper operation. If this occurs, 
simply cycle the float past the switch once. 
This will initialize it automatically.
1.  Measure the distance from the top of the 

indicating scale, on the magnetic level 
meter, to the top of the communicating 
chamber. Record this distance. 

2.  Loosen the clamps holding the indicating 

scale to the communicating chamber.

3.  Open the mounting band supplied with the 

MGS-314/314D Series and put it around 
the communicating chamber, under the 
indicating scale. 

4.  Place the MGS-314/314D Series on 

the communicating chamber with the 
cooling fins facing 180° away from the 
communicating chamber and with the 
conduit opening facing down. 

Position 'A'

Position 'B' 

Position 'B'

Figure 2 

MGS-314D SERIES

Figure 1

MGS-314 SERIES

Position 'A'

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4.3 Wiring connection  

1.  If you are using conduit for the switch wiring 

use a conduit seal with a drain or a drip-loop to 
prevent condensate from entering the housing. 
Condensate can cause electrical shorts.

  The switch housing has a ½" NPT-F 

connection for the wiring conduit. 

2.  We recommend attaching an aluminum 

condulet, via a 300 Series stainless steel 
nipple, to the conduit opening of the switch 
housing. This will give you an accessible point 
to terminate the control wires. DO NOT USE 
any ferromagnetic material such as: carbon 
steel, duplex, 400 Series stainless steel or 
cast iron.

5.  Put the mounting band between the cooling 

fins in the channel provided. 

6.  Loosely tighten the mounting band. Move 

the MGS-314/314D Series either up or down 
to the desired position, and tighten the band. 

7.  The switch must be mounted within the 

indication range for the magnetic gauge. 
The mounting band for the switch should be 
a minimum of 1" inside the indication range. 
This will insure sufficient float movement to 
operate the switch. 

8.  If more than one switch is used on a 

single magnetic gauge, the minimum 
recommended distance between mounting 
bands is 3". 

9.  Adjust the position of the indicating scale so 

that the distance from the top of the scale 
to the top of the communicating chamber 
is the same as in Step 1. Tighten the 
clamps holding the indicating scale to the 
communicating chamber. 

Содержание Penberthy MGS-314 Series

Страница 1: ...gnetic level meter switch The Model MGS 314 314D Series magnetic level meter switch is designed to detect the passage of the float in a MULTIVIEW magnetic liquid level meter at a specific location The switch consists of a snap action switch and a magnetic actuation assembly encased in a watertight Type 4 or explosion proof Type 7 enclosure This is Emerson s sole warranty and in lieu of all other w...

Страница 2: ...trol drawing 7E741 010 Figure 5 Must use suitable certified conduit seal ATEX IECEx Certified Intrinsically safe for Ex ia IIC T6 Ga When installed in accordance with control drawing 7E742 010 Figure 6 3 THEORY OF OPERATION While reading the theory of operation refer to Figure 1 MGS 314 Series or Figure 2 MGS 314D Series for the location of the components The description is based on a side view Wi...

Страница 3: ... a conduit seal with a drain or a drip loop to prevent condensate from entering the housing Condensate can cause electrical shorts The switch housing has a NPT F connection for the wiring conduit 2 We recommend attaching an aluminum condulet via a 300 Series stainless steel nipple to the conduit opening of the switch housing This will give you an accessible point to terminate the control wires DO ...

Страница 4: ...witch Closed Open NA NA NA MGS 314D Series Toggle at position A liquid level below switch Common for blue and white Common for orange and violet Closed Open Open Closed Toggle at position B liquid level above switch Open Closed Closed Open 7 TROUBLESHOOTING 7 1 Introduction Your Penberthy magnetic level meter switch is designed to give you years of unattended service However failure of electrical ...

Страница 5: ...thorization R A number from your authorized Penberthy distributor prior to returning your unit Failure to do so will result in the unit being returned to you without being tested and freight collect To obtain an R A number collect the following information Reason for return Person to contact at your company Ship to address There will be a minimum charge applied for evaluation of non warranty units...

Страница 6: ...Isc 150mA Ca Cleads La Lleads One multiple channel intrinsic safety barrier must be used The barrier parameters must meet the following requirements Vt 40V or It 150mA Ca Cleads La Lleads Installation shall conform to the manufacturer s instructions supplied with the intrinsic safety barrier as well as the National Electric Code and ANSI ISA RP 12 6 or CSA C22 Installation of Intrinsically Safe In...

Страница 7: ... ATEX IECEx CERTIFIED EXPLOSION PROOF FOR MGS 314 314D 7E741 010 HAZARDOUS AREA EX d IIB Models MGS 314 A MGS 314D A MGS 314L A A flame path seal off shall be installed directly to threaded entry of enclosure Wiring to be in accordance with National Electric Code NEC pertinent parts of the 500 series of Article 5 or local codes as applicable NON HAZARDOUS AREA ...

Страница 8: ...er parameters must meet the following requirements Vt 40V or It 150mA Ca Cleads La Lleads Installation shall conform to the manufacturer s instructions supplied with the intrinsic safety barrier as well as the National Electric Code and ANSI ISA RP 12 6 or CSA C22 Installation of Intrinsically Safe Instrument Systems in Hazardous classified Locations Maximum non hazardous area voltage must not exc...

Страница 9: ...sically Safe Input PENBERTHY MODEL MGS 314 SERIES AND MGS 314D SERIES LEVEL CONTROL SWITCH INSTALLATION OPERATION AND MAINTENANCE INSTRUCTIONS APPENDIX B Figure 9 CONNECTION DIAGRAM MGS 314 R1 10 KΩ 5 R1 10 KΩ 5 R2 1 8 7 9 11 10 12 14 15 KFA5 SR2 Ex2 W IR 4 2 5 3 6 R2 1 KΩ 1 KΩ MGS 314 Output 1 Output 2 Suppy 120 Vac 9 MODEL KFA5 SR2 Ex2 W IR INTERVAL RELAY 9 1 Operation Mode condition Lead breaka...

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