Dwyer Instruments 629 Series Installation And Operating Instructions

The Series 629 Differential Pressure Transmitter 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.
Pressure Limits
Working*
Range
Pressure (psi)
(psid)
Max. Static on Either Port
5
10
10
20
25
50
30
60
50
100
100
200
150
300
200
400
300
600
500
1000
* Pressures exceeding the working
pressure limit may cause a calibration
shift of up to ±3% of full scale.
DWYER INSTRUMENTS, INC.
P.O. BOx 373 • MIChIgAN CITY, INDIANA 46360, U.S.A.
1.800.561.8187
Series 629 Differential Pressure Transmitter
Specifications - Installation and Operating Instructions
Over
Pressure (psi)
50
100
250
250
250
500
750
1000
1200
2000
www.
LIQUID TIGHT FITTING
CORD DIAMETER RANGE:
.200 TO .350 [5.06 TO 8.89]
1/4 NPT
TYP
5-25/32 [146.84]
1/4 NPT FEMALE FITTING
6-59/64 [175.82]
OPTIONAL 1/4 NPT
MALE FITTING
SPECIFICATIONS
Service: Compatible gases & liquids.
Wetted Materials: Types 316, 316L SS.
Accuracy: ±0.5% F.S. (includes linearity, hysteresis & repeatability).
Temperature Limits: 0 to 200°F (-18 to 93°C).
Compensated Temperature Limits: 0 to 175°F (-18 to 79°C).
Pressure Limits: See chart.
Thermal Effect: 0.02%/°F (0.036%/°C) includes zero & span.
Power Requirements: 13-30 VDC.
Output Signal: 4 to 20 mA. Optional 0-5, 1-5, 0-10, 1-6 or 2-10 VDC.
Zero & Span: Potentiometers inside conduit enclosure.
Response Time: 50 msec.
Loop Resistance: 0-1300 ohms maximum for current output. For
voltage outputs, minimum load resistance: 2000 ohms.
Current Consumption: Transmitter: 40 mA max; Transmitter with
optional display: 140 mA max.
Electrical Connections: Terminal block.
Process Connections: 1/4˝ female NPT.
Display: Optional 4-1/2 digit 1/2˝ (12.7 mm) height LED.
Enclosure Rating: Designed to meet NEMA 4X (IP66) for non-LED
models.
Mounting Orientation: Not position sensitive.
Weight: 10.1 oz (286 g).
Agency Approvals: CE:
EN 61000-4-2
EN 61000-4-3
EN 61000-4-4
EN 61000-4-5
EN 61000-4-6
Phone: 219/879-8000
Fax: 219/872-9057
information@itm.com
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e-mail: info@dwyer-inst.com