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Last Updates: 05/12/2020

Dwyer Series 626 & 628 Industrial Pressure Transmitter

The Dwyer Series 626 Pressure Transmitters possess a highly precise 0.25% full-scale accuracy piezo-resistive sensor contained in a compact, rugged, NEMA 4X (IP66) stainless steel general purpose housing or cast aluminum conduit housing.

The Dwyer Series 628 Pressure Transmitters are ideal for OEMs with 1% full-scale accuracy sensors. The corrosion-resistant 316L stainless steel wetted parts allow the Series 626 and 628 transmitters to measure the pressure in a multitude of processes from hydraulic oils to chemicals. The Series 626 and 628 are available in absolute and pressure ranges with a variety of optional outputs, process connections, and electrical terminations to allow you to select the right transmitter for your application.

Note: The standard conduit housing (-CH) has been phased out, see the conduit box housing (-CB) for the replacement model.

Product Applications

  • Compressors
  • Pumping Systems
  • Irrigation System Pressure
  • Industrial Process Monitoring
  • Hydraulic

Service : Compatible gases and liquids.

Wetted Materials : Type 316L SS.

Accuracy : 626: 0.25% FS; 626: 0.20% RSS; 628: 1.0% FS; 628: 0.5% RSS; 626 Absolute Ranges: 0.5% FS; 626 absolute ranges: 0.30% RSS. (Includes linearity, hysteresis, and repeatability.)

Temperature Limit : 0 to 200°F (-18 to 93°C).

Compensated Temperature Range : 0 to 175°F (-18 to 79°C).

Thermal Effect : ±0.02% FS/°F. (includes zero and span).

Pressure Limits : See Catalog page.

Power Requirements : 10 to 30 VDC (for 4 to 20 mA, 0 to 5, 1 to 5, 1 to 6 VDC outputs); 13 to 30 VDC (for 0 to 10, 2 to 10 VDC outputs); 5 VDC ±0.5 VDC (for 0.5 to 4.5 VDC ratio-metric output), 10 to 35 VDC (for 4 to 20 mA with -CB option); 13 to 35 VDC or isolated 16 to 33 VAC (for selectable output with -CB option).

Output Signal : 4 to 20 mA, 0 to 5 VDC,1 to 5 VDC, 0 to 10 VDC, or 0.5 to 4.5 VDC, or selectable 0 to 5, 1 to 5, 0 to 10, 2 to 10 VDC for -CB option.

Response Time : 300 ms.

Loop Resistance : 0 to 1000 Ohms max. R max = 50 (Vps-10) Ohms (4 to 20 mA output), 0 to 1250 Ohms max. Rmax = 50(Vps-10) Ohms (4 to 20 mA output with -CB option), 5K Ohms (0 to 5, 1 to 5, 1 to 6, 0 to 10, 2 to 10, 0.5 to 4.5 VDC output).

Stability : 1.0% FS/year (Typ.).

Current Consumption : 38 mA maximum (for 4 to 20 mA output); 10 mA maximum (for 0 to 5, 1 to 5, 1 to 6, 0 to 10, 2 to 10, 0.5 to 4.5 VDC output); 140 mA maximum (for all 626/628/629-CH with optional LED).

Electrical Connections : Conduit Housing (-CH): terminal block; 1/2″ female NPT conduit. General Purpose Housing (-GH): cable or DIN EN175801-803-C.

Process Connection : 1/4″ male or female NPT and BSPT.

Enclosure Rating : NEMA 4X (IP66).

Mounting Orientation : Mount in any position.

Weight : 10 oz (283 g).

Agency Approvals : CE, NSF, UL.

  • Robust 316 SS oil filled sensor provides shock and vibration resistance insuring stability in controlling pressure for process applications
  • NEMA 4X rated enclosure provides protection in harsh environments permitting outdoor monitoring or in areas where dust and particulate matter exists
  • A wide range of skus and connections that can meet pressure measurement specifications from low to very high

Manuals

Catalog Pages

Product Data Sheet

 

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