Series-607

Supported Applications

The Dwyer Series 607 is a differential pressure transmitter designed to convert positive, negative (vacuum), or differential pressures of clean, dry air and other non-conductive, non-corrosive gases into a standard two-wire output signal. The series employs an ultra-thin glass-clad silicon diaphragm design intended for precision measurement and control in low-pressure applications.

Operating Conditions & Performance

The Series 607 operates within an ambient temperature range of -20 to 160°F (-29 to 71°C) with a compensated temperature range of 35 to 135°F (2 to 57°C). Humidity limits are specified as 10-95% RH, non-condensing. The transmitter features a response time of 250 ms max and maintains stability within ±0.5% FS/yr.

Accuracy is available in two classes: standard models offer ±0.5% Full Scale (FS) accuracy, while specific high-accuracy variants provide ±0.25% FS. The pressure rating for the device is 10 psig (0.69 bar). Thermal effects are rated at ±0.015% FS/°F for zero and span.

Measurement Ranges

The series supports a wide envelope of differential pressure ranges, including:

• Low Range: 0 to 0.1 in. w.c., 0 to 0.25 in. w.c., and 0 to 0.50 in. w.c.
• Moderate Range: 0 to 1.0, 0 to 2.0, 0 to 5.0, and 0 to 10 in. w.c.
• High Range: Up to 0-25 in. w.c.
• Bipolar (Vacuum/Positive): Ranges such as 0 to ±0.1, 0 to ±0.25, and up to 0 to ±5.0 in. w.c., depending on the model code suffix.

Configuration Options

The Series 607 is configured as a two-wire transmitter with a standard output signal of 4-20 mA DC, powered by an unregulated supply between 12 and 36 VDC. The maximum loop resistance is specified at 0 to 1045 Ω.

Housing & Connections

The unit features a 300 Series stainless steel housing rated NEMA 2 (IP11) for protection against moisture and dirt. Process connections utilize barbed stainless steel fittings designed for 3/16" ID tubing. Electrical connection is made via screw terminals labeled + and -.

Adjustments & Options

The transmitter includes externally accessible, non-interactive potentiometers allowing ±10% FS adjustment of zero and span. Optional accessories include:

• A-302F-A: 303 SS static pressure tip with mounting flange for 3/16" ID rubber or plastic tubing (4" insertion depth).
• NISTCAL-PT1: NIST traceable calibration certificate.

The device is not field repairable; recalibration requires return to the factory.

Key Product Differences

Model numbers follow the format 607-<MODEL CODE>. The series distinguishes between standard accuracy and high-accuracy models, as well as unidirectional (positive) and bidirectional (differential/vacuum) ranges:

• Standard Accuracy Models: Base model codes such as 607-0 through 607-9 generally provide ±0.5% FS accuracy.
• High-Accuracy Models: Variants with the "1" suffix (e.g., 607-01, 607-11) are specified for ±0.25% FS accuracy.
• Bipolar Range Models: Variants ending in "B" (e.g., 607-0B, 607-1B) cover ranges centered on zero to accommodate both positive and negative pressures (vacuum).