Dwyer 607 User Manual

Series 607 Differential Pressure Transmitter

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Specifications - Installation and Operating Instructions

ulletin E-76

The Dwyer Series 607 Differential Pressure Transmitter converts positive,

negative (vacuum) or differential pressures of clean, dry air or other non-

onductive, non-corrosive gases into a standard two wire, 4-20 mA output signal.

everal factory calibrated models are available with ranges from 0-.10˝ w.c. to 0-

5˝ w.c. All models employ a variable capacitance transducer with a micro-

2 machined, ultra thin silicon diaphragm enabling precision measurement and control of very low pressures. Because no epoxies or other organics are used to seal the sensor, performance is exceptionally stable and drift free. It is also highly resistant to overpressure, shock and vibration. See specifications for complete details.

Series 607 Transmitter Models & Ranges

Accuracy ±0.5% of Full Scale*

Range in w.c.

Model

0-.10

607-0

0-.25

607-1

0-.50

607-2

0-1.0

607-3

0-2.0

607-4

0-5.0

607-7

0-10

607-8

Accuracy ±0.25% of Full Scale*

Range in w.c.

Model

0-.10

607-01

0-.25

607-11

*Includes Linearity, Hysteresis, and Repeatability

Model 607-9 607-0B 607-1B 607-2B 607-3B 607-4B 607-7B

Model 607-21 607-71

Range in w.c.

0-25 .10-0-.10 .25-0-.25 .50-0-.50

1.0-0-1.0

2.0-0-2.0

5.0-0-5.0

Range in w.c.

0-.50 0-5.0

PECIFICATIONS

S GENERAL Maximum Pressure: 10 psig (0.69 bar). Media Compatibility: Air and non-conductive, non-corrosive gases.

LECTRICAL

ower Supply: 12-36 VDC, unregulated.

utput Signal: 4-20 mA DC, two wire.

O Loop Resistance: 0-1045 ohms Vmin. = 12V + [(.022A)(RL)]. Warm-up Time: 15 seconds.

PERFORMANCE AT 70° F. Output at zero: 4 mA. Output at full span: 20 mA. Stability: ±0.5% of full span/year. Response Time: 250 msec.

TEMPERATURE LIMITS Operating: -20 to 160°F (-29 to 71°C), 10-95% RH, non-condensing. Compensated: 35 to 135°F (2 to 57°C). Storage: -40 to 180°F (-40 to 82°F). Thermal Effects: ±0.015%F.S./°F (zero and span).

MECHANICAL Housing: 300 Series stainless steel (NEMA 2). Pressure Connections: 4˝ barbed stainless steel for 3/16˝ ID tubing. Weight: 1.04 lb (472 g). Span and Zero: Factory set to specified range. Externally accessible, non-

interactive, ±10% F.S. adjustment.

DWYER INSTRUMENTS, INC.

P.O. BOX 373 • MICHIGAN CITY, IN 46360, U.S.A. Fax: 219/872-9057 e-mail: info@dwyer-inst.com

Phone: 219/879-8000 www.dwyer-inst.com

NSTALLATION

NOTE: RECEIVER MAY BE IN SERIES WITH + or LEG OF CONTROL LOOP

POWER SUPPLY

12-36 VDC

SEE FIG. C

RECEIVER (R

)

GROUND

OPTIONAL

SERIES 607

PRESSURE

TRANSMITTER

1100

1000

900

800

700

600

LOOP RESISTANCE (Ω)

PERATING RANGE

MIN

= 12V + (.022A x R

)

AXIMUM VALUE (1090)

0 5 10 12 20 25 30 36 40

POWER SUPPLY VOLTAGE - VDC

. Location: Select a clean, dry location free of excess vibration where the

emperature of the unit with be between -20 and 160°F. Distance from the

eceiver is limited only by total loop resistance. See “ Electrical Connections”. The

r tubing supplying pressure to the transmitter can be run practically any distance. Long tubing lengths will not affect accuracy but response time will be increased slightly.

. Position: The Series 607 Transmitter is not position sensitive. However, it is

ecommended that you avoid mounting with pressure connections pointing up

ecause of the chance of condensed moisture entering the interior. Moisture can

b also be avoided by routing tubing with a low point just ahead of the transmitter.

3. Mounting: Attach to mounting surface with two #8 or #10 screws in the ounting slots provided.

. Pressure connections: The Series 607 Transmitter is shipped with a short

4 length of tubing installed between the ports to keep the interior clean. Remove it and discard after unit is mounted. Connect positive (above atmospheric) pressure to port marked “HIGH and vent the “LOW” port. Connect negative (vacuum) pressure to port marked “LOW” and vent the “HIGH” port. For differential

ressures, connect the higher one to the “HIGH” port and the lower one to the

LOW” port.

“

ELECTRICAL CONNECTION

Caution: Do not exceed the specified supply voltage rating. Permanent damage, not covered by warranty, may result. This unit is not designed for AC voltage operation.

lectrical connections to the Series 607 Transmitter are made to the two screws

n the terminal strip labeled + and -. If polarity is inadvertently reversed, the loop

o will not function properly but no damage will be done to the transmitter because of internal circuit protection. An external power supply delivering 12 to 36 VDC must be used to power the control loop in which the transmitter is connected. Refer to Figure B for connection of the power supply, transmitter and receiver. The power required to generate the 4-20 mA output signal depends on the loop resistance of the circuit and is proportional to the resistance according to the graph and formula in Figure C. The maximum length that can be used in the current loop is a function of wire size and receiver resistance. A shielded two conductor cable is recommended for control loop wiring. Make sure the total loop resistance is within the operating region as shown in Figure C.

Figure C

ALIBRATION

Each Series 607 Transmitter is factory calibrated to the range listed in the model number chart. Range is defined as that pressure which when applied to the

ransmitter will produce a 20 milliamp current in the loop. Zero pressure will

roduce 4 milliamps. If fine adjustment of calibration is required, used the

ollowing procedure:

1). With the transmitter connected to its’ companion receiver, insert a milliammeter in series with the current loop. A controllable pressure source should be teed to the high pressure port of the transmitter and to an accurate pressure gage or manometer.

2). Apply electrical power to the system and allow 15 seconds form components to stabilize.

3). With no pressure applied to the transmitter remove blowout disc and adjust “zero” control so loop current is 4 mA.

4). Apply full span pressure and adjust loop current to 20 mA using “span” control.

5). Remove the milliammeter from the circuit, replace blowout disc, and place system in service.

MAINTENANCE/REPAIR

After final installation of the Series 607 Differential Pressure Transmitter, no routine maintenance is required. A periodic check of system calibration is recommended. These devices are not field repairable and should be returned to the factory if recalibration or other service is required. After first obtaining a

Figure B

DWYER INSTRUMENTS, INC.

P.O. BOX 373 • MICHIGAN CITY, IN 46360, U.S.A. Fax: 219/872-9057 e-mail: info@dwyer-inst.com

Returned Goods Authorization (RGA) number, send the material, freight prepaid, to the following address. Please include a clear description of the problem plus any application information available.

Dwyer Instruments, Inc. Attn: Repair Department 102 Highway 212 Michigan City, IN 46360.

Phone: 219/879-8000 www.dwyer-inst.com