Dwyer pressure transmitter series 681 sanitary pressure transmitters

Environment - The Series 681 Transmitter is designed to be used with any gas or liquid compatible with 316L stainless steel (316 for ranges > 30 psig).  It is designed to be splash and drip proof for wash-down cleaning and can also be completely submerged with the exception of the open end of the electrical cable. Cleaning - The pressure sensing diaphragm will withstand normal high pressure washing and partial vacuums created by fast cooling of steam sterilized tanks.  However, be sure not to exceed the proof pressure (listed on specification sheet).  In high pressure washing, care should be taken not to spray directly on diaphragm as it could result in exceeding the proof pressure.  The 681 can also be cleaned by dipping the diaphragm in a container of cleaning solution or by wiping gently with a soft cloth.
Temperature Limits - The operating temperature limits of the 681, based on the limits of the electronics, are -40F to 260 F. F to 180 F range Thermal Effects20
Zero Shift ? 2.00% F.S./100 F
Span Shift ? 2.00% F.S./100
Mounting - The 681 will mount directly to a mating tri-clover flange along with a tri-clover type clamp and gasket.  (2 inch tri-clover for ranges up to 30 psig and 1.5 inch for higher ranges.)
Note: The output signal is not appreciably affected by clamping forces so it is not neces-sary to orient the flange circle to any special position for best

	Model Number	Description
	681-02	Sanitary pressure transmitter, range 0-1 psi, 60 psi overpressure, 2" sanitary clamp connection.
	681-12	Sanitary pressure transmitter, range 0-2 psi, 100 psi overpressure, 2" sanitary clamp connection.
	681-22	Sanitary pressure transmitter, range 0-5 psi, 150 psi overpressure, 2" sanitary clamp connection.
	681-32	Sanitary pressure transmitter, range 0-10 psi, 150 psi overpressure, 2" sanitary clamp connection.
	681-42	Sanitary pressure transmitter, range 0-15 psi, 150 psi overpressure, 2" sanitary clamp connection.
	681-52	Sanitary pressure transmitter, range 0-30 psi, 150 psi overpressure, 2" sanitary clamp connection.
	681-62	Sanitary pressure transmitter, range 0-60 psi, 150 psi overpressure, 2" sanitary clamp connection.
	681-72	Sanitary pressure transmitter, range 0-100 psi, 150 psi overpressure, 2" sanitary clamp connection.
	681-101	Sanitary pressure transmitter, range 0-300 psi, 1000 psi overpressure, 1-1/2" sanitary clamp connection.

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