Dwyer Instruments 616W Operating Manual

Series 616W Differential Pressure Transmitter

[53.98]

15.09]

3-1/8

®

Specications - Installation and Operating Instructions

Bulletin P-616W

[79.38]

1-3/16
[30.18]

3-3/4 [95.25]

The Series 616W Differential Pressure Transmitter senses the pressure of air and
non-combustible, compatible gases and sends a standard 4 to 20 mA or selectable
0 to 5/0 to 10 VDC output signal. All models, including those featuring an LCD, are

factory calibrated to specic ranges. Positive, negative, and differential pressures

can be measured within a full scale accuracy of ±0.25%. This weatherproof unit is

enclosed in a polycarbonate case, rated IP66/NEMA 4X. The span and zero controls

are for use when checking calibration, and are not intended for re-ranging.

Series 616W Transmitter Models & Ranges

MODEL CHART
Model Range Max. Pressure Digital Display
616W-2
616W-3
616W-4
616W-5
616W-6
616W-7
616W-2-LCD
616W-3-LCD
616W-4-LCD
616W-5-LCD
616W-6-LCD
616W-7-LCD
616W-6B-LCD
616W-10B-LCD
616W-20B-LCD
616W-2M-LCD
616W-3M-LCD
616W-4M-LCD
616W-5M-LCD

0 to 6 in w.c.

0 to 10 in w.c.
0 to 20 in w.c.
0 to 40 in w.c.
0 to 100 in w.c.
0 to 200 in w.c.

0 to 6 in w.c.

0 to 10 in w.c.
0 to 20 in w.c.
0 to 40 in w.c.
0 to 100 in w.c.
0 to 200 in w.c.
3-0-3 in w.c.
5-0-5 in w.c.
10-0-10 in w.c.

0 to 1.5 kPa
0 to 2.5 kPa
0 to 5 kPa
0 to 10 kPa

Table 1

10 psig
10 psig
20 psig
20 psig
15 psig
45 psig
10 psig
10 psig
20 psig
20 psig
15 psig
45 psig
10 psig
10 psig
10 psig

68.9 kPa

68.9 kPa

137.8 kPa

137.8 kPa

–
–
–
–
–
–

0 to 6.00

0 to 10.00
0 to 20.0
0 to 40.0
0 to 100.0
0 to 200.0

-3.00-0-3.00

-5.00-0-5.00

-10.00-0-10.00
0 to 1.50
0 to 2.50
0 to 5.00
0 to 10.0

Ø3/16 [4.76]

MOUNTING HOLES

1-1/4

[31.75]

4-1/2

[114.30]

5-1/8

[130.18]

1-1/4

[31.75]

SPECIFICATIONS

Service: Air and non-combustible, compatible gases.

Wetted Materials: Consult factory.
Accuracy: 0.25% FS @ 77°F (25°C), display accuracy ±0.5%.

Thermal Effect: ±0.02% FS/°F (±0.036% FS/°C).

Stability: ±1% FS/yr.

Temperature Limits: 14 to 185°F (-10 to 85°C).
Pressure Limits: See chart.

Power Requirements: 10 to 35 VDC (2-wire), 17 to 36 VDC, or isolated 21.6 to 33

VAC (3-wire).

Output Signal: 4 to 20 mA (2-wire), 0 to 5 VDC, or 0 to 10 VDC (3-wire)
Zero and Span Adjustments: Push buttons.
Loop Resistance: Current Output: 0 to 1250 Ω (max); Voltage Output: Load

resistance 1 kΩ (min).

Current Consumption: 40 mA max.
Electrical Connections: 3-wire removable European style terminal block for 16 to

26 AWG.
Process Connections: Barbed, dual size to t 1/8” and 3/16” (3.12 and 4.76 mm)
I.D. rubber or vinyl tubing.

Enclosure Rating: NEMA 4X (IP66).
Mounting Orientation: Any orientation.
Weight: Without LCD: 8.8 oz (249 g); With LCD: 9.6 oz (272 g).
Agency Approvals: CE.

2-1/8

TYP 4 PLACES

1-5/16 [33.32] TYP

7/16 OR 5/8
[11.13 OR 15.88]
TYP

1/8 AND 3/16
[3.18 AND 4.76]
I.D. TUBING

3/4 [19.05] TYP

3-1/8

[79.38]

4-17/32
[1

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]

INSTALLATION

1. Location: Select a clean, dry mounting location free from excess vibration where

the temperature will remain between 14 to 185°F (-10 to 85°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 the pressure connection 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 nal spanning and
zeroing must be done while the transmitter is in that alternate position.

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 range. On
ranges over 20 psi, we recommend use of a suitable hose clamp to assure the

integrity of the connection.

ELECTRICAL CONNECTIONS

2-Wire 4 to 20 mA Current Operation

CAUTION

Do not exceed specied supply voltage ratings. Permanent
damage not covered by warranty will result. Simultaneous

outputs are not designed for AC voltage operation.

The connections to the transmitter are made through terminals 2 and 3 on the terminal

block as shown in Figure 2. The terminal block is removable and each of the terminals
are labeled underneath the terminal block on the circuit board. Polarity is indicated by

terminals 2 (+IOUT) and 3 (–IOUT). The AC/DC selection jumper should be set for
DC operation.

CAUTION

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 VAC line operation.

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

transmitter. Determine which of the following circuit drawings best applies to your
application and wire accordingly.

Electrical Connection

The Series 616W simultaneously transmits a 2-wire 4 to 20 mA current output and
a 3-wire 0 to 5 V / 0 to 10 V voltage output via a removable European-style three

conductor terminal block. The transmitter can be wired in one of the following three

ways to utilize the current and/or voltage output.

Power Supply

Refer to Table 2 for the required supply rating.

MODEL CHART
Output Type Power Supply Rating

2-wire current
3-wire current

Simultaneous current and voltage

10 to 35 VDC (40 mA min)

17 to 36 VDC or 21.6 to 33 VAC (40 mA min)

17 to 35 VDC (40 mA min)

Table 2

Choose a power supply with a voltage and current rating sufcient to meet the power
specications under all operating conditions. If the supply is unregulated, make sure
that the output voltage remains within the required voltage range under all power line
conditions. Ripple on the supply should not exceed 100 mV.

AC/DC Jumper Selection

NOTICE

The jumper is factory set to AC. If DC power is applied while

the jumper is set to AC, no damage will occur. However, the

accuracy of the unit may be temporarily affected.

Figure 2: Current Output Wiring

The range of appropriate receiver load resistances (RL) for power supply voltage
available is given by the formula listed below. Shielded 2-wire cable is recommended
for control loop wiring. Ground the shield at the power supply end.

NOTICE

The receiver may be connected to either the negative or positive
side of the loop, whichever is most convenient. Should the

polarity of the transmitter or receiver be inadvertently reversed, the loop will not

function properly, but no damage will be done to the transmitter.

PS - 10.0

V

L =

R

20 mA DC

The maximum length of connecting wire between the transmitter and the receiver is
a function of wire size and receiver resistance. That portion of the total current loop
resistance represented by the resistance of the connecting wires themselves should
not exceed 10% of the receiver resistance. For extremely long runs (over 1,000
ft/305 m), it is desirable to select receivers with lower resistances in order to keep the
size and cost of the connecting leads as low as possible. In installations where the
connecting run is no more than 100 ft (30.5 m), connecting lead wire as small as No.

22 ga. can be used.

CAUTION

Powering the unit with AC power while the jumper is set to DC

may permanently damage the transmitter.

Refer to Figure 1 for the location of the AC/DC jumper. Place the shorting jumper

across either the two pins marked AC or the two pins marked DC.

Figure 1: AC/DC Jumper