Operating Pressures to 300 PSIG

The SERIES 102 & 1102 Flanged Chamber Type Level Controls are external cage type level switches which are self-contained in a side mount body. The sturdy 102 Series operates at pressure to 400 psi (28 bar) and temperatures to 425°F (218°C). The 102 Series will operate to a minimum specific gravity of 0.60. The 1102 Series will operate to a specific gravity of 0.40 under the same operating pressure and temperature. The 102 and 1102 Series contain a stainless steel float and offer a choice of cast iron, cast steel, or inexpensive cast 316 SS float chamber. These series are well suited for applications where ease of accessibility is desired for pressure or vacuum vessels. Electrical circuits using hermetically sealed snap action or mercury contacts are available in a variety of actions including SPST, SPDT, DPDT and DPST combinations. Optional circuits are available for low current, low voltage direct circuits; high direct current or high temperature applications. Electrical enclosures provide general purpose; weatherproof, explosion-proof or explosion-proof/vapor proof capability. The 102 design also features three 1" NPT process connections for side/side or side/bottom piping. When using the side/side process connection, the bottom 1" NPT connection can be used as a drain.

Product Applications

Pressure or vacuum vessels
Chemical processing plants
Steam and electric generating stations
Hydraulic accumulators
Vapor-liquid separators
Scrubbers
Oil refineries
Storage tanks

More Information

Model Chart

EXAMPLE	102	WT	7810	10	C1	60	12	102-WT-7810-C1-60 Liquid Level Control with flanged chamber enclosure, SPDT snap action switch, fixed deadband, automatic reset, Operating pressure 400 psig (28 bar) at 425°F (218°C), side/bottom, side/side mounting standard with 1" NPT connections, minimum specfic gravity 0.60.
MODEL	102							Minimum specific gravity 0.60
MODEL	1102							Minimum specific gravity 0.40
ENCLOSURES		G						General purpose, NEMA 1.	UL
		WT						Water-tight, NEMA 4, 4X.	UL
		E						Explosion-proof, Class I Groups B, C, D, Class II Groups E, F, G, NEMA 7, 9.	UL
		EV						Explosion-proof, vapor proof, Class I Groups B, C, D, Class II Groups E, F, G, NEMA 7, 9.	UL
CIRCUITS (for electrical circuits see charts below)			48XX					Single stage, mercury switch, see chart A or C below.
			48XX	XX				Two stage, mercury switch, see chart A or C below.
			78XX					Single stage, snap switch, see chart B or D below.
			78XX	XX				Two stage, snap switch, see chart B or D below.
			78XXHM					Hermetically sealed snap switch, see chart B below.
			98XX					Single stage, high capacity DC snap switch, use heat fins (HF) if process temperature excced 350°F (177°C), do not exceed 450°F (232°C), see chart B or D below.
			98XX	XX				Two stage, high capacity DC snap switch, use heat fins (HF) if process temperature excced 350°F (177°C), do not exceed 450°F (232°C), see chart B or D below.
CHAMBER CONSTRUCTION					C			Cast iron chamber, pressure rating 300 psig (22 bar) at 425°F (218°C).	UL
					C1			Cast steel chamber, pressure rating 400 psig (28 bar) at 425°F (218°C).	UL
					C2			Cast 304SS chamber.
					C216			Cast 316SS chamber, float and rod, armature 430SS, pressure rating 400 psig (28 bar) at 425°F (218°C).	UL
MINIMUM SPECIFIC GRAVITY						40		Minimum specific gravity 0.40 (1102 only)
MINIMUM SPECIFIC GRAVITY						60		Minimum specific gravity 0.60 (102 only)	UL
OPTIONS							R	Manual reset for single stage.
							R1	Manual reset for lower stage of 2-stage controls.
							STW	Stainless steel tag (Wired)
							01	Breather only. (E-Housing only)
							02	Drain only. (E-Housing only)
							12	Breather and drain for E type enclosure. Recommended for high humidity or outdoor service.
							23720	Fungus proofing special 23720.

CHARTS A & B - ELECTRICAL CIRCUITS AND RATINGS - SERIES 102

SWITCH TYPE	SWITCH ACTION	ELECTRICAL RATINGS IN AMPS						ORDERING CODE
		AC			DC			SINGLE STAGE	TWO STAGE
		120V	240V	440V	30V	125V	250V		LOWER	UPPER
CHART A Mercury Contacts	SP-ST open on level FALL	10	5	3†		10	5	-4821	-4821	-21	UL
	SP-ST open on level RISE	10	5	3†		10	5	-4820	-4820	-20	UL
	SP-DT one switch	4	2	1†		4	2	-4810	-4810	-10	UL
	SP-DT two switches E.I.*	10	5	3†		10	5	-4815	-4815	-15	UL
	DP-ST two switches E.I.* open on level FALL	10	5	3†		10	5	-4813	-4813	-13	UL
	DP-ST two switches E.I.* open on level RISE	10	5	3†		10	5	-4814	-4814	-14	UL
	DP-DT two SP-DT switches	4	2	1†		4	2	-4806	-4806	-06	UL
CHART B snap action contacts	SP-DT one switch	12	5	3†		0.5**	0.25**	-7810	-7810	-10	UL
	DP-DT Two SP-DT switches	12	5	3†		0.5**	0.25**	-7806	-7806	-06	UL
	SP-DT one hermetically sealed switch	5	5		5**			-7810HM	-7810HM	-10HM
	DP-DT two hermetically sealed SP-DT switches	5	5		5**			-7806HM	-7806HM	-06HM
	DP-DT two SP-DT switches	10	3			10‡	3‡	-9806	-06
	SP-DT one switch	10	3			10‡	3‡	-9810	-10

†Available on special order, change 1st digit in ordering code from 4 to 5 or 7 to 8, i.e., -4820 becomes -5820, -7810 becomes -8810, etc.
‡10 amp inductive (polarized) at 125 VDC.
*Electrically Independent.
**Resistive.

CHARTS C & D - ELECTRICAL CIRCUITS AND RATINGS - SERIES 1102

SWITCH TYPE	SWITCH ACTION	ELECTRICAL RATINGS IN AMPS						ORDERING CODE
		AC			DC			SINGLE STAGE	TWO STAGE
		120V	240V	440V	30V	125V	250V		LOWER	UPPER
CHART C Mercury Contacts	SP-ST open on level FALL	10	5	3†		10	5	-4821	-4821	-21
	SP-ST open on level RISE	10	5	3†		10	5	-4820	-4820	-20
	SP-DT one switch	4	2	1†		4	2	-4810	-4810	-10
	SP-DT two switches E.I.*	10	5	3†		10	5	-4815	-4815	-15
	DP-ST two switches E.I.* open on level FALL	10	5	3†		10	5	-4813	-4813	-13
	DP-ST two switches E.I.* open on level RISE	10	5	3†		10	5	-4814	-4814	-14
	DP-DT two SP-DT switches	4	2	1†		4	2	-4806	-4806	-06
CHART D snap action contacts	SP-DT one switch	12	5	3†		0.5**	0.25**	-7810	-7810	-10
	DP-DT Two SP-DT switches	12	5	3†		0.5**	0.25**	-7806	-7806	-06
	SP-DT one hermetically sealed switch	5	5		5**			-7810HM	-7810HM	-10HM
	DP-DT two hermetically sealed SP-DT switches	5	5		5**			-7806HM	-7806HM	-06HM
	DP-DT two SP-DT switches	10	3			10‡	3‡	-9806	-06
	SP-DT one switch	10	3			10‡	3‡	-9810	-10

Features

Unique design allows the simple removal of four bolts from the inspection plate to examine the float and chamber for cleaning or wear without disconnecting the piping or electrical circuitry
Electrical enclosures provide general purpose, weatherproof, explosion-proof or explosion-proof/vapor proof capability as well as cost effective cast 316SS float chamber option
Electrical circuits using hermetically sealed snap action or mercury contacts are available in a variety of actions including SPST, SPDT, DPDT and DPST combinations
The 102 design features three 1" NPT process connections for side/side or side/bottom piping allowing the bottom 1" NPT connection to be used as a drain when using the side/side process connection

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Series 102/1102 Flanged Chamber Type Level Control

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