• 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.
• 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.
• Application Versatility—The Type 2100 and 2100E switch construction comes in a left-hand as well as a right-hand mounting version. The explosion-proof, hermetically sealed Type 2100E switch is offered as both a factory mounting and as an electric switch retrofit to the proven Type 2100 switch.
• Installation Versatility—The displacer cage has two 1-inch 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.
• Easy Reversibility—Switching action for both the Type 2100 and 2100E switches is field-reversible from high-level to low-level or vice versa without additional parts.

Input Signal(1)

Liquid level

Minimum Process Liquid Specific Gravity

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

Output Signal(1)

Type 2100 Switch: 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
Type 2100E Switch: Same as supply signal

Supply Signal

Type 2100 Switch: ■2.1 to 4.1 bar (30 to 60 psig), ■4.1 to 6.9 bar (60 to 100 psig) or ■6.9 to 10.3 bar (100 to 150 psig)
Type 2100E Switch: 11 amperes, 1/4 horsepower at 125/250 volts ac; 5 amperes resistive, 3 amperes inductive at 28 volts dc

Supply Medium (Type 2100 Switch)

Air or Natural Gas(2)

Steady-State Air Consumption(1,3) (Type 2100 Switch)

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(4)

■153 bar (2220 psig) WOG(5) except ■24 bar (350 psig) WOG is the maximum working pressure for sight window construction

Operative Temperature Range(1,4)

Type 2100: -29 to 204°C (-20 to 400°F)
Type 2100E: -29 to 82°C (-20 to 180°F)

Displacer Diameter

102 mm (4 inches)

Process Connection Size

153 bar (2220 psig) WOG: ■1-inch female NPT, ■2-inch Schedule 80 buttwelding ends, or ■2-inch Schedule 160 buttwelding ends

Type 2100 Switch Supply Pressure Connection Size

1/4-inch NPT female

Type 2100E Switch Electrical Connection Size

1/2-inch NPT male

Hazardous Area Classification

The Type 2100 and 2100E switches have no hazardous area approvals.
Approvals on the electrical switch component in the Type 2100E, supplied by ITT NEO-DYN are as follows:

Class I Division 1, Groups A,B,C,D
Class II Division 1, Groups E,F,G

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

Class I Division 1 Groups A,B,C,D
Class II Division 1 Groups E,F,G

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

Construction Materials

Cage: ■SA-105 forged steel (standard) ■SA-105 solution annealed carbon steel (NACE MR0175-2002)
Displacer: ■304L stainless steel (standard) ■316L solution annealed stainless steel (NACE MR0175-2002)
Torque Rod & Tube Assembly: N05500
Bearing: Glass-filled PTFE
O-Rings: Fluorocarbon
Cover Gasket:
Type 2100 Switch: Chloroprene
Type 2100E Switch: Cellulose/Nitrile
Other Gaskets: Silicone rubber

Construction Materials (continued)

Nozzle Block Assembly (Type 2100 Switch Only): Aluminum & stainless steel
Nozzle (Type 2100 Switch Only): Stainless steel
Flapper & Clamp Assembly (Type 2100 Switch Only): Stainless steel
Flapper Seat (Type 2100 Switch Only): Fluoroelastomer
Magnet (Type 2100 Switch Only): Special material
Body Block: Steel
Cover:
Type 2100 Switch: Clear plastic
Type 2100E Switch: Acrylic
Housing (Type 2100E Switch Only): Stainless steel
Other Metal Parts: Stainless steel

Options

Type 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 Type 2100 or Type 2100E that installs in place of the pipe plug, as illustrated in figure 2.
NACE Option: Constructions are available which comply with the metallurgical requirements of NACE MR0175-2002. Environmental restriction may apply.

Shipping Weights

153 bar (2220 psig) WOG Construction: 17.2 kg (38 pounds)

Application

When ordering, specify:

• Supply pressure (Type 2100 switch only)
• SPDT or DPDT switch construction (Type 2100E switch only)
• Maximum working pressure and temperature
• Switching action for high or low level alarming

Construction

Refer to the specifications. Review the information under each specification and in the referenced figures; specify the desired selection whenever there is a choice to be made. High level switching and right-hand mounting will be supplied automatically unless otherwise specified. Always specify the complete type number of the desired equipment.

Note
Neither Emerson, Emerson Process Management, nor any of their affiliated entities, assumes responsibility for the selection, use, and maintenance of any product. Responsibility for the selection, use, and maintenance of any product remains with the purchaser and end-user.