Dwyer 616D User Manual

Bulletin E-43-D

Series 616D DIN Rail Differential Pressure Transmitter

Specifications – Installation and Operating Instructions

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The Series 616D Differential Pressure Transmitter senses the pressure of air and compatible gases and sends a standard 4-20 mA output signal. The 616D housing is specifically designed to mount on a 35 mm DIN rail in a panel. This mounting style allows for several units to be mounted closely together reducing required space. A wide range of models are available factory calibrated to specific ranges as listed in the chart below. The span and zero controls are for use when checking calibration. They are not intended for re-ranging to a significantly different span. Versatile circuit design enables operation in 2-wire current loops.

For applications requiring direct pressure readings or percent of full span output, the optional Model A-701 Digital Readout makes an ideal companion device. It provides a bright red 0.6˝ high, 3-1/2 digit LED display while supplying power to the Series 616D transmitter. For additional information on these and other transmitters, see the Dwyer Instruments, Inc. full line catalog.

Series 616D Transmitter Models and Ranges

		Max.			Max.
Model	Range	Press.	Model	Range	Press.
616D-1	0-3 in w.c.	2 psig	616D-10	0-30 psid	58 psig
616D-2	0-6 in w.c.	5 psig	616D-11	0-50 psid	150 psig
616D-3	0-10 in w.c.	5 psig	616D-12	0-100 psid	150 psig
616D-4	0-20 in w.c.	11 psig	616D-13	0-12 ft w.c.	29 psig
616D-5	0-40 in w.c.	11 psig	616D-14	0-20 ft w.c.	29 psig
616D-6	0-100 in w.c.	29 psig	616D-3B	1.5-0-1.5 in w.c.	2 psig
616D-7	0-200 in w.c.	29 psig	616D-6B	3-0-3 in w.c.	5 psig
616D-8	0-10 psid	29 psig	616D-10B	5-0-5 in w.c.	5 psig
616D-9	0-20 psid	58 psig	616D-20B	10-0-10 in w.c.	11 psig

SPECIFICATIONS

Service: Air and non-combustible, compatible gases.

Wetted Materials: Consult factory.

Accuracy: ±0.25% F.S. at 70°F. Stability: ±1% F.S./yr.

Temperature Limits: 20 to 120°F (-6.67 to 48.9°C).

Pressure Limits: See chart.

Thermal Effect: ±0.055% F.S./°F (0.099% F.S./°C).

Power Requirements: 10-35 VDC (2 wire). Output Signal: 4 to 20 mA.

Zero and Span Adjustments: Potentiometers for zero and span. Loop Resistance: DC: 0-1250 ohms maximum.

Current Consumption: DC: 38 mA maximum.

Electrical Connections: Screw-type terminal block.

Process Connections: 1/8˝ female NPT. Accessories included are 2 barbed fittings for 1/8˝ (3.12 mm) and 3/16˝ (4.77 mm) I.D. rubber or vinyl tubing.

Mounting Orientation: Vertical, on a 1.378˝ (35 mm) DIN rail. Weight: 4.8 oz (136 g).

INSTALLATION 1. Location

Select a clean, dry mounting location free from excess vibration where the temperature will remain between 20 and 120°F (-6.7 and 48.9°C). Distance from the receiver is limited only by total loop resistance. See Electrical Connections below. The tubing supplying pressure to the instrument can be practically any length required, but long lengths will increase response time slightly.

2. Position

A vertical position, with pressure connections pointing down, is recommended. That is the position in which all standard models are spanned and zeroed at the factory. They can be used at other angles, but final spanning and zeroing must be done while transmitter is in that alternate position.

Pressure Connections

Two integral barbed tubing connections are provided. They are dualsized to fit both 1/8˝ and 3/16˝ (3.12 and 4.76 mm) I.D. tubing. Be sure the pressure rating of the tubing exceeds that of the operating ranges.

DWYER INSTRUMENTS, INC.		Phone: [phone]	www.dwyer-inst.com
P.O. BOX 373 • MICHIGAN CITY, INDIANA 46361, U.S.A.		Fax: [phone]	e-mail: [e-mail]