Dwyer Instruments 629 Series Manual de usuario

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1/4 NPT

TYP

6-59/64 [175.82]

OPTIONAL 1/4 NPT

MALE FITTING

5-25/32 [146.84]

1/4 NPT FEMALE FITTING

1-5/8

[41.28]

3-9/32

[83.34]

1-11/32

[34.13]

43/64

[17.07]

LIQUID TIGHT FITTING

CORD DIAMETER RANGE:

.200 TO .350 [5.06 TO 8.89]

#,71/

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(8;4371

";/<<>;/9<3

100

200

300

400

600

1000

!?/;

";/<<>;/9<3

100

250

500

750

1000

1200

2000

Pressures exceeding the working

pressure limit may cause a calibration

shift of up to ±3% of full scale.

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%2/$/;3/<300/;/7=3,5";/<<>;/%;,7<63==/;monitors differential

pressure of air and compatible gases and liquids with 0.5% accuracy.

The design employs dual pressure sensors converting pressure

changes into a standard 4-20 mA output signal for two wire circuits.

Small internal volume and minimum moving parts result in exceptional

response and reliability. Terminal block, zero and span adjustments are

easily accessed under the top cover. The Series 629 Differential

Pressure Transmitter is designed to meet NEMA-4X (IP66) construction.

$"%! $

$/;?3-/Compatible gases & liquids.

(/==/.,=/;3,5< Types 316, 316 SS.

-->;,-B±0.5% F.S. (includes linearity, hysteresis & repeatability).

%/69/;,=>;/363=<0 to 200°F (-18 to 93°C).

869/7<,=/.%/69/;,=>;/363=<0 to 175°F (-18 to 79°C).

";/<<>;/363=<See chart.

%2/;6,500/-=0.02%/°F (0.036%/°C) includes zero & span.

"8@/;#/:>3;/6/7=<13-30 VDC.

!>=9>=$317,54 to 20 mA. Optional 0-5, 1-5, 0-10, 1-6 or 2-10 VDC.

+/;8$9,7Potentiometers inside conduit enclosure.

#/<987</%36/50 msec.

889#/<3<=,7-/0-1300 ohms maximum for current output. For

voltage outputs, minimum load resistance: 2000 ohms.

>;;/7=87<>69=387Transmitter: 40 mA max; Transmitter with

optional display: 140 mA max.

5/-=;3-,5877/-=387<Terminal block.

";8-/<<877/-=387<1/4˝ female NPT.

3<95,B Optional 4-1/2 digit 1/2˝ (12.7 mm) height ED.

7-58<>;/#,=371Designed to meet NEMA 4X (IP66) for non- ED

models.

8>7=371!;3/7=,=387Not position sensitive.

(/312=10.1 oz (286 g).

1/7-B99;8?,5< CE:

EN 61000-4-2

EN 61000-4-3

EN 61000-4-4

EN 61000-4-5

EN 61000-4-6

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8-,=387 Select a location where the temperature of the unit will be

between 0°F and 175°F. Distance from the receiver is limited only by

total loop resistance (see electrical connections).The tubing feeding

pressure to the instrument can be practically any length required, but

long lengths will increase the response time slightly. Mount the

instrument in a location that will not be subject to excessive temperature,

shock or vibration.

"8<3=387 A vertical position is recommended (pressure connections

pointing horizontally) since that is how all standard models were

originally spanned and zeroed at the factory. They can be used at other

angles, but may require final spanning and zeroing. Due to potential

condensation build up that may travel down conduit or cable and into the

housing, it is recommended to install with the electrical conduit or cable

gland pointing downward.

 ";/<<>;/877/-=387 Dual 1/4˝ female NPT pressure connections

are provided. Use pipe thread sealant tape or other suitable pipe joint

compound when making connection to the pressure source. Avoid

excess sealant which could block the pressure passage. When

monitoring liquid pressures, air trapped in the lines can cause incorrect

readings. Bleed fittings or similar mechanisms should be used to bleed

off any trapped air.

!9=387,5(,B',5?/

For applications where higher line pressures may be encountered at

installation or when it is necessary to remove the transmitter for

maintenance without interrupting the process, the optional three way

valve is recommended (See Fig. A).

Begin with valve V1 open and valves V2 and V3 closed (See Fig. B).

Slowly open valves V2 and V3. Once the pressure has stabilized and is

equal on the high and low side of the transmitter, valve V1 can be closed

and normal operation can proceed.

To ensure proper pressures will be detected by the 629 use the bleed

fitting provided with this package to free media of bubbles. Before

applying pressure to the process connections, turn V1 to the open

position and back off the bleed screw. Next apply pressure. After the

flowing liquid is free of bubbles, retighten the bleed screw.

Before removing the transmitter from operation, open valve V1 then

close valves V2 and V3.

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31

9/32

[7.14]

6-29/32

[175.42]

2.400

[60.69]

5-7/16

[138.11]

6-1/64

[152.81]

[76.20]

2.400

[60.69]

2-1/16

[52.39]

Ø13/64 [5.64] DIA

MOUNTING HOLES

TYP 4 PLACES

BLEED SCREW

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ZERO

SPAN

13-30 VDC

(140 ma)

RECEIVER

LED DISPLAY

POSITIVE SUPPLY

TERM

1 (+)

TERM 2 (-)

TERM 4 (+)

OPTIONAL LED DISPLAY

YELLOW LED DISPLAY

CONNECTOR

PRESS AND

HOLD TO

ZERO THE

DISPLAY

PRESS TO DISPLAY

THE GAGE’S

PRESSURE RANGE

BE SURE TO TURN OFF POWER WHEN

CONNECTING OR REMOVING THE

DISPLAY’S CONNECTOR. FAILURE TO DO

SO CAN RESULT IN THE GAGE DAMAGE.

TRANSMITTER CONNECTION:

- TURN OFF POWER

- CONNECT THE POWER

SUPPLY AND RECEIVER TO

TERM 1 AND TERM 2 OF THE

GAGE AS SHOWN

- CONNECT POWER SUPPLY

(+) TO TERMINAL 4 (REQUIRED

FOR THE OPTIONAL DISPLAY ONLY)

- INSTALL THE DISPLAY’S CONNECTOR

- TURN ON POWER

POWER

SUPPLY

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ZERO

SPAN

PRESS AND

HOLD TO

ZERO THE

DISPLAY

PRESS TO

DISPLAY THE

GAGE’S

PRESSURE

RANGE

OPTIONAL LED DISPLAY

13-30 VDC

(40 ma)

13-30 VDC

(100 ma)

POWER

SUPPLY

LED SUPPLY

POWER SUPPLY

TRANSMITTER CONNECTION:

- TURN OFF POWER

- CONNECT THE POWER SUPPLY

AND RECEIVER TO TERM 1 AND

TERM 2 OF THE GAGE AS SHOWN

OPTIONAL DISPLAY CONNECTION:

- CONNECT LED POWER SUPPLY

(-) TO TERMINAL 3

- CONNECT LED POWER SUPPLY

(+) TO TERMINAL 4

- INSTALL THE DISPLAY’S CONNECTOR

- TURN ON POWER

LED DISPLAY

CONNECTOR

YELLOW

BE SURE TO TURN OFF POWER WHEN

CONNECTING OR REMOVING THE

DISPLAY’S CONNECTOR. FAILURE TO DO

SO CAN RESULT IN THE GAGE DAMAGE.

TERM

1 (+)

TERM 4 (+)

TERM 3 (-)

TERM 2 (-)

RECEIVER

LED DISPLAY

NEGATIVE SUPPLY

LED DISPLAY

POSITIVE SUPPLY

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Shielded cable is recommended for control loop wiring.

Electrical connections to the Series 629 pressure transmitters are made

to the terminal block located inside the housing. Remove the screws and

lift off the cover. Wire as shown in Fig. C, D or E. Use Fig. C for current

output connection. Use Fig. D for current output with optional ED

display. Use Fig. E for current output with optional ED display using two

power supplies. If ordering pre-wired cable, black wire is negative (-)

and red wire is positive (+).

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PRESSURE

TRANSMITTER

1RED

2 BLACK (COMMON)

3 WHITE (+V OUT)

4 (NC)

RECEIVER

+V in

POWER

SUPPLY

13-30 VDC

ZERO PRESS AND

HOLD TO

ZERO THE

DISPLAY

PRESS TO

DISPLAY THE

GAGE’S

PRESSURE

RANGE

LED DISPLAY

CONNECTOR

YELLOW

OPTIONAL LED DISPLAY

BE SURE TO TURN OFF POWER WHEN

CONNECTING OR REMOVING THE

DISPLAY’S CONNECTOR. FAILURE TO DO

SO CAN RESULT IN THE GAGE DAMAGE.

VOLTAGE OUTPUT

TRANSMITTER CONNECTION:

- TURN OFF POWER

- CONNECT POWER SUPPLY

(+) TO TERMINAL 1

- CONNECT POWER SUPPLY

(-) TO TERMINAL 2 AND

THE RECEIVER (-)

- CONNECT THE RECEIVER

(+) TO TERMINAL 3

- CONNECT LED POWER SUPPLY

(+) TO TERMINAL 4

- INSTALL THE DISPLAY’S CONNECTOR

- TURN ON POWER

POWER

SUPPLY

13-30 VDC

(140 ma)

RECEIVER

+V OUT

LED DISPLAY

POSITIVE SUPPLY

TERM 4 (+) TERM 1 (+)

TERM 2 (-)

TERM 3 (-)

SPAN

31D'85=,1/8>=9>=@3=289=387,5D.3<95,B

(3;//71=2 - The maximum length of wire connecting transmitter and

receiver is a function of wire size and receiver resistance. Wiring should

not contribute to more than 10% of receiver resistance to total loop

resistance. For extremely long runs (over 1000 ft.), choose receivers

with higher resistance to minimize size and cost of connecting leads.

When the wiring length is under 100 feet, lead wire as small as 22 AWG

can be used.

>;;/7=  6 !>=9>= !9/;,=387 - An external power supply

delivering 13-30 VDC with minimum current capability of 40 mA DC (per

transmitter)is required to power the control loop. See Fig. C for

connection of the power supply, transmitter, and receiver. The range of

the appropriate receiver load resistance (R ) for the DC power supply

voltage available is expressed by the formula:

RMax = Vps – 13

20 mA DC

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For voltage outputs, wire as shown in Fig. F or Fig. G. Use Fig. F for

voltage output connection. Use Fig. G for voltage output with optional

ED display. Terminal 1 is positive (+), terminal 2 is negative (-), terminal

3 is +Vout, terminal 4 is ED positive supply. If ordering optional pre-

wired cable, black wire is negative (-), red wire is positive (+) and white

wire is +Vout.

'85=,1/!>=9>=

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An advantage of the standard 4-20 mA DC output signal provided by the

Series 629 Differential Transmitter is that any number or receivers can

be connected in series in the current loop. Thus, an A-701 digital

readout, an analog panel meter, a chart recorder, process controlling

equipment, or any combination of these devices can be operated

simultaneously. It is necessary only that each be equipped with a

standard 4-20 mA input and proper polarity of the input connections be

observed when inserting the device into the current loop. If any of the

receiving devices displays a negative or downscale reading this

indicates that the signal input leads are reversed.

 %  

Upon final installation of the Series 629 Differential Pressure Transmitter

and the companion receiver, no routine maintenance is required. A

periodic check of the system calibration is recommended. The Series

629 Differential Pressure Transmitter is not field serviceable and should

be returned if repair is needed (field repair should not be attempted and

may void warranty). Be sure to include a brief description of the problem

plus any relevant application notes. Contact customer service to receive

a return goods authorization number before shipping.

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