Dwyer 2800 User Manual

Series 2800 Current to Pressure Transducer

1

[25.4]

Ø1/8

[

Ø3.17]

1-1/2

[38.1]

1-19/64

[33.0]

1-51/64

[45.7]

3-11/16

[

93.7]

MOUNTING HOLES

#10-32 UNF-2B X 3/8 DP

2 PLCS

2-3/16
[

55.4]

2

-15/16

[74.7]

22 GA. WIRE LEADS

APPROX. 18˝ LONG

POS, NEG, GRD

3-1/8

[

79.2]

3

3/64

[13.1]

25/64
[9.72]

4

9/64

[19.4]

1

/2 NPT

Ø1-1/8

[Ø28.7]

IN & OUT PORTS

1/4-18 NPT

4 PLCS

Specifications - Installation and Operating Instructions

Bulletin V-4

The Series 2800 Current to Pressure Transducer converts a current

input to a linearly proportional pneumatic output pressure. This unit
utilizes a closed loop pressure feedback system that closely controls
output and compensates for vibration, mounting angle, temperature, and
supply pressure variations. These characteristics make this unit ideal for
field mounting on a valve. The control mechanism is a piezoceramic
actuator encapsulated in a protective skin, which provides a constant
defense against humidity and contaminants. These features make this
unit ideal for use in demanding applications. The 2800 also comes in a
NEMA 4X enclosure and is field reversible. It is FM and CSA approved
intrinsically safe, as well. For ease of installation, this model has input
and output ports on both the front and back and can be easily panel
mounted.

Model
2813-WP
2816-WP

Input

4-20 mA
4-20 mA

Output

3-15 psig (0.2-1.0 bar)
6-30 psig (0.4-2.1 bar)

SPECIFICATIONS
Service: Oil free, clean dry air filtered to 40 microns.
Input Signal: 4-20 mA.
Air Supply: Minimum: 5 psig (0.3 bar) above maximum output;

Maximum: 100 psig (6.9 bar).

Output: 3 to 15 psig (0.2 to 1.0 bar), 6 to 30 psig (0.4 to 2.1 bar).
Accuracy: ±0.1% of span.
Hysteresis: ±0.1% of span.
Repeatability: ±0.1% of span.
Deadband: 0.02% of span.
Power Requirement: Loop powered.
Temperature Limits: Operating: -40 to 160°F (-40 to 71°C); Storage: -

40 to 200°F (-40 to 93°C).

Pressure Connections: 1/4˝ female NPT.
Electrical Connection: 1/2˝ female NPT.
Air Consumption: 0.025 scfm (0.01 l/s) at midrange typical.
Output Capacity: 4.5 scfm (2.1 l/s) at 25 psig (1.7 bar) supply; 12.0

scfm (5.7 l/s) at 100 psig (6.9 bar) supply.

Enclosure: Chromate-treated aluminum with epoxy paint.
Enclosure Rating: NEMA 4X (IP65) and Intrinsically safe.
Weight: 0.8 lb (0.37 kg).
Agency Approvals: CSA, CE, FM.

PROXIMITY CONTROLS

A DIVISION OF DWYER INSTRUMENTS, INC.

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

Phone: [phone] www.dwyer-inst.com
Fax: [phone] e-mail: [e-mail]

INSTALLATION

GREEN LEAD (GND)

RED LEAD (+)

BLACK LEAD (-)

ZERO

ADJUSTMENT

SPAN
ADJUSTMENT

The Series 2800 transducer is a force balance device in which the piezo
actuator is positioned in relation to a nozzle as the input signal is varied.
The application of an electrical signal causes axial movement of the
actuator. The actuator moves toward the nozzle and creates back
pressure which acts as a pilot pressure to an integral booster relay.

Mounting

Each Series 2800 comes with a mounting kit which enables, panel or
wall mounting of the unit. Optional mounting kits are available for DIN­rail, pipe, or valve mounting. The 2800 may be mounted at any angle.

Panel: With access to rear of panel, attach transducer to panel using two
10-32 screws and the two threaded mounting holes on the back of the
unit. With no access to the rear of a panel, attach bracket to transducer
using two 10-32 holes on the back of the unit and mount bracket to panel
using four 10-32 screws.

Inline: The Series 2800 has been designed to mount inline to a standard
valve yoke with the A-180 valve mounting kit.

The A-182 pipe mounting kit includes the bracket, U-bolt, and nuts
needed to mount the transducer to a 1-1/2˝ pipe. Just attach the bracket
to the transducer using the two 10-32 holes on the back of the unit. Then,
place the U-bolt around the pipe and through the bracket. Finally, place
the nuts on the U-bolt and tighten.

Pneumatic Connections

Clean all pipe lines to remove dirt and scale before installation. Supply
air must be filtered to 40 microns and free of moisture and lubricants.

Two 1/4˝ NPT ports are provided for supply air connections. Either port
may be used. The unused port must be plugged with the pipe plug
included with the unit.

Two 1/4˝ NPT ports are provided for pneumatic output connections.
Either port may be used and one may be used for the mounting of an
output gage. If no gage is installed, the unused port must be plugged
with the pipe plug included with the unit. Avoid getting pipe sealant inside
the piping or transducer.

Equipment Ratings:

Intrinsically safe for Class I, II, and III, Division 1, Groups C, D, E, F, and
G hazardous (classified) locations and intrinsically safe for Class I, Zone
0, Group IIB hazardous (classified) locations and suitable for Class I, II,
and III, Division 2, Groups A, B, C, D, F, and G.

CSA Intrinsically Safe Ratings:

Class I, Division 2, Groups A, B, C and D; Class II, Division 2, Groups F,
and G; Class III. Rated 7 to 30 VDC, 4 to 20 mA; Temperature Code T4;
Maximum Ambient 70°C.

Ex ia IIB (Class I, Zone 0, Group IIB); Temperature Code T4; Intrinsically
safe with the following entity Parameters when installed as per drawing
531-990-044; Ui = 30 V, li = 125 mA, Pi = 0.70 W, Ci = 0 µF, Li = 0 mH.

OPERATION
Calibration

All units are shipped from the factory calibrated, direct acting. If the user
requires a different mode of operation (i.e. reverse acting, split range) it
is necessary to reposition internal electrical switches as indicated in the
following sections. Though the units are factory calibrated for direct
acting it is suggested that the user check the calibration. It is not
necessary to remove the cover of the unit for calibration if the direct
acting mode is desired.

Direct Acting Calibration

In direct acting operation the unit is calibrated so that minimum input
signal corresponds to minimum output pressure and increasing input
signal results in increasing output pressure. Apply the minimum input
signal of the range being used (e.g. 4mA) (see figure 2). Observe the
output pressure. If necessary, adjust the zero screw until reaching
minimum output pressure setting. Turn zero screw clockwise to
decrease and counter-clockwise to increase.

Apply the maximum input signal of the range being used (e.g. 20 mA).
Observe the output pressure. If necessary, adjust the span screw until
reaching maximum output pressure setting. Turn span screw clockwise
to decrease and counter-clockwise to increase. After setting the span it
will be necessary to recheck the zero. Repeat steps 1-4 until both end
points are at required values.

Electrical Connections

Electrical connections are made to the red (+) and black (-) leads. The
green lead is furnished for case ground (see figure 1).

Figure 1

I/P Conduit Connection

WARNING

friction and must be taken into account during installation.

The I/P transducer enclosure contains aluminum and is
considered to constitute a potential risk of ignition by impact or

Factory Mutual Research Corporation (FM) Intrinsically Safe
Ratings: IS / I, II, III / 1 / CDEFG / T4 Ta = 70°C - 431-990-023; Entity;

Type 4X NI/1/2/ABCD; S/II, III/2/FG/T4 Ta = 70°C; Type 4X. Entity
Parameters: Ui (Vmax)=30V, Li (lmax) = 125 mA, Pi = 0.70 W, Ci = 0
µF, Li= 0 mH

Zero Adjustment and Span Adjustment

Signal

4-20 mA

Direct Acting - Position of switches for forward acting operation. Standard

Switch 1 2 3 4 5 6 7 8 9 10 11 12

ON

OFF

setting as supplied by factory.

Figure 2

Figure 3