Emerson Fisher 2100 Data Sheet

5 (1)
Emerson Fisher 2100 Data Sheet

2100 and 2100E Level Switches

Product Bulletin

32.2:2100

D200032X012

February 2014

 

 

Fisherr 2100 Pneumatic and 2100E Electric

Liquid Level Switches

Fisher 2100 on-off pneumatic switch and 2100E electric switch sense (shown in figure 1) high or low liquid levels. Typically, these switches pneumatically or electrically operate safety shutdown systems for field processing equipment in oil and gas production applications. 2100 and 2100E switches both use a displacer style sensor located in an external cage that mounts on the outside of a vessel.

Unless otherwise noted, all NACE references are to NACE MR0175-2002.

Features

ν Proven Rugged Construction—The switch is isolated and sealed from the process through a corrosion resistant displacer and torque tube assembly for maximum reliability. The displacer can withstand up to 1 1/2 times the maximum working pressure, allowing it to remain in the cage during hydrostatic testing.

ν Sour Service Capability—Materials are available for applications handling sour fluids and gases. These constructions comply with the metallurgical requirements of NACE MR0175 2002. Environmental restrictions may apply.

ν Application Versatility—The 2100 and 2100E switch construction comes in a left hand as well as a right hand mounting version. The explosion proof, hermetically sealed 2100E switch is offered as both a factory mounting and as an electric switch retrofit to the proven 2100 switch.

FISHER 2100 PNEUMATIC LIQUID LEVEL SWITCH

ν Installation Versatility—The displacer cage has two 1 NPT pipe plugs that you can remove and relocate for horizontal instead of vertical equalizing piping, or for installation of a bleed or drain valve.

ν Easy Reversibility—Switching action for both the 2100 and 2100E switches is field reversible from high level to low level or vice versa without additional parts.

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Product Bulletin

2100 and 2100E Level Switches

32.2:2100

February 2014

D200032X012

 

 

Specifications

 

 

 

Input Signal

Liquid level

Minimum Process Liquid Specific Gravity

0.5 (consult your Emerson Process Management sales office for specific gravities below this value)

Output Signal

2100: Equal to the supply pressure when the switch is in the normal position (flapper against nozzle) and reduced to approximately atmospheric pressure, depending upon the bleed orifice size and the piping configuration, when the switch is activated

2100E: Same as supply signal

Supply Signal

2100: J É2.1 to 4.1 bar (30 to 60 psig), J 4.1 to

6.9 bar (60 to 100 psig) or J 6.9 to 10.3 bar (100 to 150 psig)

2100E: 11 amperes, 1/4 horsepower at 125/250 volts ac; 5 amperes resistive, 3 amperes inductive at 28 volts DC

Supply Medium (2100)

Air or Natural Gas(1)

Steady State Air Consumption(2) (2100)

Less than 0.03 normal m3/hour (1.0 scfh) for all supply pressures when the liquid level is 25.4 mm (1 inch) below the normal switch position (flapper against nozzle) for high level switching or 25.4 mm (1 inch) above the normal switch position for low level switching

Maximum Working Pressure(3)

J 153 bar (2220 psig) WOG(4) except J 24 bar

(350 psig) WOG is the maximum working pressure for sight window construction

Operative Temperature Range(3)

2100: –29 to 204_C (–20 to 400_F) 2100E: –29 to 82_C (–20 to 180_F)

Displacer Diameter

102 mm (4 inches)

Process Connection Size

153 bar (2220 psig) WOG(4): JÉ1 NPT internal

JÉDN 50 (NPS 2) Schedule 80 buttwelding ends, or JÉDN 50 (NPS 2) Schedule 160 buttwelding ends

2100 Switch Supply Pressure Connection Size

1/4 NPT internal

2100E Switch Electrical Connection Size

1/2 NPT external

Hazardous Area Classification

Approvals on the electrical switch component in the 2100E, supplied by ITT NEO DYN are as follows:

CSA— Class I Division 1, Groups A,B,C,D Class II Division 1, Groups E,F,G ; Dual Seal

FM— EXP - Class I Division 1 Groups A,B,C,D DIP - Class II Division 1 Groups E,F,G

UL— Class I Division 1 Groups A,B,C,D

Class II Division 1 Groups E,F,G

ATEX— Ex d IIC

IECEx— Ex d IIC

Approvals on the complete 2100E assembly are as follows:

Russian GOST-R—1ExdIICT4/T5/T6

Russian FSETAN

Contact your Emerson Process Management sales office if additional information is required.

Construction Materials

Cage: J SA216 Cast Steel (WCC) cage, J SA216 Cast Steel (WCC) cage (NACE MR0175­2002) and J SA351 316 SST (CF8M) cage

Displacer: J S30400 stainless steel (standard)

J S31603 solution annealed stainless steel (NACE MR0175 2002)

Torque Rod & Tube Assembly: N05500

Bearing: Glass filled PTFE O Rings: Fluorocarbon

Cover Gasket:

2100: Chloroprene 2100E: Silicone rubber

Other Gaskets: Silicone rubber

Nozzle Block Assembly (2100 only): Aluminum & stainless steel

Nozzle (2100 only): Stainless steel

-continued -

2

2100 and 2100E Level Switches

Product Bulletin

32.2:2100

D200032X012

February 2014

 

 

Specifications (continued)

 

Construction Materials (continued)

Flapper & Clamp Assembly (2100 only): Stainless steel

Flapper Seat (2100 only): Fluorocarbon Magnet (2100 only): Special material Body Block: Steel

Cover:

2100: Clear plastic 2100E: Aluminum

Housing (2100E only): Aluminum Other Metal Parts: Stainless steel

Options

2100 Switch Option: Individual street tee and bleed

orifice (when it is not desired to supply several level switches from one common block and bleed restriction)

Sight Window Option: A sight window is available for either the 2100 or 2100E that installs in place of the pipe plug, as illustrated in figure 1.

NACE Option: Constructions are available which comply with the metallurgical requirements of NACE MR0175 2002. Environmental restriction may apply.

Shipping Weights

17.2 kg (38 pounds)

NOTE: Specialized instrument terms are defined in ANSI/ISA Standard 51.1 - Process Instrument Terminology.

1.Natural gas should contain no more than 20 ppm of H2S.

2.Normal m3/ normal cubic meters per hour at 0_C, 1.01325 bar, absolute (Scfh standard cubic feet per hour at 60_F, 14.7 psia)

3.Pressure and temperature limits in this document and any applicable standards or code limitations should not be exceeded.

4.Water, Oil, Gas maximum working pressure. Corresponds to Cold Working Pressure: the maximum pressure rating allowed under normal ambient temperature conditions, which are usually understood to be -29 to 38_C (-20 to 100_F). Refer to MSS SP 25.

Figure 1. Fisher 2100E Electric Liquid Level Switch

APPROXIMATE

SWITCHING POINT

LOCATION OF

OPTIONAL

SIGHT WINDOW

Principle of Operation

Figure 2 shows the 2100 switch with the nozzle, flapper, and magnet positioned for high level activation. When the switch is in the normal position with the flapper against the nozzle, output pressure cannot bleed off and remains the same as full supply pressure. Rising liquid level exerts a buoyant force on the displacer, producing a torque on the torque tube. When the torque transmitted by the torque tube exceeds the torque exerted on the flapper by the magnet, the flapper snaps away from the nozzle, allowing output pressure to bleed through the nozzle faster than supply pressure can enter through the bleed orifice. The reduced pressure in the output signal line activates the shutdown or alarm system. When the liquid level lowers, the falling displacer forces the flapper into the field of the magnet, letting the magnet snap the flapper against the nozzle and causing output pressure to build to full supply pressure.

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