Dwyer Instruments 616KD Operating Manual

Series 616KD One-Touch

®

Differential Pressure Transmitter

Specications - Installation and Operating Instructions

Bulletin P-616KDX

The Series 616KD One-Touch

®

Differential Pressure Transmitter senses the

pressure of air and compatible gases and sends a standard 4 to 20 mA or optional

voltage output signal. A wide range of models are available factory calibrated to

specic ranges. A single push button properly adjusts both zero and span. New

enclosure enables the 616KD-A/B to be mounted on a 35 mm DIN rail either via its

side or back DIN rail clips.

INSTALLATION

1. Location

Select a clean, dry mounting location free from excess vibration where the

temperature will remain between 20 and 122°F (-6.7 and 50°C). 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 calibrated at the factory. Consult

factory for other position orientations.

3. Pressure Connections

Two integral barbed tubing connections are provided. They are dual-sized to t 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.

4. Electrical Connections:

Electrical connections are made to the terminal block located on the top of the

transmitter. Terminals are marked 1, 2, 3 and 4 as shown below. Determine which

of the following circuit drawings applies to your application and wire accordingly.

Shielded cable is recommended. Ground the shield at the power supply end only.

SPECIFICATIONS

Service: Air and non-combustible, compatible gases.

Wetted Materials: Consult factory.

Accuracy: 616KD-A: ±0.25% FS; 616KD-B: ±1% FS; 616KD-C: ±2% FS.

Stability: ±1% FS/year.

Temperature Limits: 0 to 140°F (-17.8 to 60°C).

Compensated Temperature Range: 20 to 122°F (-6.67 to 50°C).

Pressure Limits: 2 psig (ranges 5 in w.c. or lower); 5 psig (ranges 10 to 40 in w.c.).

Thermal Effect: 616KD-A: ±0.02% FS/°F; 616KD-B: ±0.04% FS/°F; 616KD-C:

±0.06 FS/°F, includes zero and span.

Power Requirements: 4 to 20 mA output: 10 to 35 VDC (2 wire) or 12 to 26 VAC (4

wire); 5V output: 10 to 35 VDC (3 wire) or 12 to 26 VAC (4 wire); 10V output: 13 to

35 VDC (3 wire) or 12 to 26 VAC (4 wire).

Output Signal: 4 to 20 mA or option with eld selectable 0 to 10, 0 to 5, 2 to 10, 1

to 5 volts.

Zero and Span Adjustments: Push button.

Loop Resistance: 4 to 20 mA output (DC): 0 to 1250 Ω max. Rmax = 50(VpsDC

-10) Ω; 4 to 20 mA output (AC): 0 to 1200 Ω max. Rmax = 50(1.4 VpsAC -12) Ω;

Voltage output: 5K Ω minimum.

Current Consumption: 24 mA max.

Electrical Connections: Screw-type terminal block.

Process Connections: Barbed, dual size to t 1/8˝ & 3/16˝ (3 mm & 5 mm) ID

rubber or vinyl tubing.

Enclosure Rating: NEMA1 (IP20).

Mounting Orientation: Vertical with pressure connections pointing down.

Weight: 1.8 oz (51 g).

Agency Approvals: CE.

Do not exceed specied supply voltage ratings. Permanent

damage not covered by warranty will result. This unit is not

designed for 120 or 240 volts AC line operation.

CAUTION

7/8

[22.23]

1/2

[12.70]

2-13/32

[61.12]

3-21/64

[84.53]

5/16

[7.94]

Ø5/32 [3.97]

MOUNTING HOLE

2 PLACES

1/2

[12.70]

1-1/2

[38.10]

2-1/4 [57.15]

5/8

[15.88]

OPTIONAL

TERMINAL

COVER

1-1/32

[26.19]

2-13/32 [61.12]

Optional protective cap

Digital push button

sets both zero & span

®

DWYER INSTRUMENTS, INC.

P.O. BOX 373 • MICHIGAN CITY, INDIANA 46360, U.S.A.

Phone: [phone]

Fax: [phone]

www.dwyer-inst.com

e-mail: [e-mail]