POPULAR MODELS

Model Number	Description	Price
123-153	Water level control, cast iron chamber, SPDT mercury switch.	£ 292.00
123-7000-153	Water level control, cast iron chamber, SPDT snap switch.	£ 292.00

*Prices quoted exclude carriage and VAT which will be added where appropriate in accordance with legislation in force at the date of supply. E&OE. Orders are accepted subject to Dwyer Instruments Ltd Standard Terms and Conditions of Sales and none others whatsoever.

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MODEL CHART - SERIES 123/125

EXAMPLE	123	2		123-2 Liquid Level Control with SPST mercury switch closing on level increase, minimum specific gravity 0.88, cast iron body, general purpose case, switch rated at 10 amp 120VAC/DC, 5 amp 24 VAC/DC, pressure 150 psi (10 bar), maximum process temperature 365°F (185°C).
CONSTRUCTION	123			Packing gland construction, cast iron chamber*, general purpose case, snap acting movement assembly.	UL	CSA
CIRCUIT		2		SPST, close on level increase, mercury switch, rated 10 amp 120 VAC/DC, 5 amp 240 VAC/DC, motor rating 1 hp 120 VAC, 3/4 hp 240 VAC, 1/3 hp 120/240 VDC.
		3		SPST, open on level increase, mercury switch, rated 10 amp 120 VAC/DC, 5 amp 240 VAC/DC, motor rating 1 hp 120 VAC, 3/4 hp 240 VAC, 1/3 hp 120/240 VDC.
		153		SPDT, one circuit closes as one circuit opens, mercury switch, rated 4 amp 120 VAC/DC, 2 amp 240 VAC/DC, common ground.
		156		SPDT, consisting of two SPST mercury switches, electrically independent, one circuit closes as one circuit opens, each switch rated 10 amp 120 VAC/DC, 5 amp 240 VAC/DC.
		804		DPDT, consisting of two SPDT mercury switches, each switch has common ground, two circuits close as two circuits open, each switch rated 4 amp 120VAC/DC, 2 amp 240 VAC/DC.
		7000-153		SPDT snap-action switch, rated 15 amp 120/240/480 VAC, 1/2 amp 120 VDC Rees., 1/4 amp 240 VDC res.
OPTIONAL HOUSING			WP	Weatherproof adlet housing.
EXAMPLE	125	4820		125-4820 Liquid Level Control with SPST mercury switch closing on level fall, minimum specific gravity 0.88, cast iron body, general purpose case, switch rated at 10 amp 120VAC/DC, 5 amp 240 VAC/DC, pressure rating 150 psi (10 bar), maximum process temperature 365°F (185°C).
CONSTRUCTION	125			Packing gland construction, cast iron chamber*, general purpose case, direct acting movement assembly.	UL	CSA
CIRCUIT		4820		SPST mercury switch, close on level fall, rated 10 amp 120 VAC/DC, 5 amp 240 VAC/DC, motor rating 1 hp 120 VAC, 3/4 hp 240 VAC, 1/3 hp 120/240 VDC.	UL	CSA
		4821		SPST mercury switch, open on level fall, rated 10 amp 120 VAC/DC, 5 amp 240 VAC/DC, motor rating 1 hp 120 VAC, 3/4 hp 240 VAC, 1/3 hp 120/240 VDC.	UL	CSA
		4810		SPDT, one circuit closes as one circuit opens, mercury switch, rated 4 amp 120 VAC/DC, 2 amp 240 VAC/DC, common ground.	UL	CSA
		4815		SPDT, consisting of two SPST mercury switches, electrically independent, one circuit closes as one circuit opens, each switch rated 10 amp 120 VAC/DC, 5 amp 240 VAC/DC.	UL	CSA
		4806		DPDT, consisting of two SPDT mercury switches, each switch has common ground, two circuits close as two circuits open, each switch rated 4 amp 120VAC/DC, 2 amp 240 VAC/DC.	UL	CSA

*Cast iron chamber is not for use with lethal or flammable substances, either liquid or gaseous.