Dwyer 677B-12 Differential Pressure Transmitter
Product Introduction
The Dwyer 677B-12 Differential Pressure Transmitter is a
high-precision instrument designed for measuring low to moderate
differential pressures, with a maximum pressure limit of 15 psi
(100 kPa). Constructed with 302 stainless steel wetted materials,
it offers ±0.4% full-scale accuracy and reliable performance in
applications such as building energy management, HVAC systems, and
environmental control. Its rugged NEMA 4 housing and versatile
mounting design ensure durability and easy installation in diverse
industrial and commercial environments.
Features
High Accuracy & Stability: Delivers ±0.4% FS accuracy for precise
pressure measurement, with long-term stability of ±1% FS per year,
minimizing drift and reducing calibration frequency.
Durable Construction: Wetted materials made of 302 stainless steel,
ensuring compatibility with clean, dry air and non-corrosive gases.
NEMA 4 housing protects against dust and water, suitable for both
indoor and outdoor mounting.
Enhanced Protection: Equipped with reverse polarity protection and
EMI/RFI shielding, safeguarding against electrical interference and
wiring errors, ensuring consistent operation in noisy electrical
environments.
Flexible Installation: Integral mounting tabs with slots (suitable
for #6 and #8 screws) simplify secure mounting on flat surfaces,
junction boxes, or beams. Designed for vertical baseplate mounting
(factory-calibrated in this orientation) with optional field
adjustment for other orientations.
Low Maintenance: Factory-calibrated with minimal field adjustment
required (zero adjustment only if necessary). No routine
maintenance needed; filter-equipped pressure ports handle extreme
dust or moisture conditions in most applications."
Technical Specs at a Glance
| Wetted Materials: | 302 SS |
| Accuracy: | ±0.4% FS |
| Stability: | ±1% FS/yr |
| Pressure Limit: | 15 psi (100 kPa) |
