Dwyer 626-628

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 ranges of vacuum, compound to 5000 psi with a variety of optional outputs, process connections and electrical terminations to allow you to select the right transmitter for your application.

  • Compressors
  • Pumping Systems
  • Irrigation System Pressure
  • Fire Pump Control Pressure
  • Industrial Process Monitoring
  • Refrigerant Line Pressures on Air Handlers when used with optional Refrigerant Valve Depressor
  • Trash Compaction Equipment

Features & Benefits

  • Metal Conduit Housing Option
  • Robust 316L SS Oil Filled Sensor
  • Compact Design


Service: Compatible gases and liquids.

Wetted Materials: Type 316L SS.

Accuracy: 626: 0.25% full scale; 626 absolute ranges: 0.5% full scale; 628: 1% full scale. (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.

Output Signal: 4 to 20 mA. Optional 0-5, 1-5 or 0-10.

Response Time: 50 msec.

Loop Resistance: 0-1300 ohms maximum for current. For voltage outputs, minimum load resistance: 2000 ohms.

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

Current Consumption: 38 mA (maximum).

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. Optional 1/8″ and 1/2″ male NPT available with GH housing only.

Enclosure Rating: NEMA 4X (IP66), Note: LED Version is not NEMA 4X (IP66) rated.

Mounting Orientation: Mount in any position.

Weight: 10 oz (283 g).

Agency Approvals: CE.