Dwyer Series 636D Fixed Range Differential Pressure Transmitter
(636D-0, 636D-1)
Product Introduction
The Dwyer Series 636D Fixed Range Differential Pressure Transmitter
is a rugged, high-accuracy instrument designed for measuring
pressures of liquids, gases, and vapors in demanding industrial
environments. With a 0.5% full-scale (FS) accuracy and standard
4–20 mA output (optional 1–5 VDC), it ensures precise data
transmission for process control. Housed in a NEMA 4X-rated 316
stainless steel welded enclosure, the transmitter withstands harsh
conditions, while all 316L wetted materials ensure compatibility
with most media. CSA-approved for explosion-proof use in hazardous
locations and compliant with NACE standards for offshore
applications, the 636D combines reliability with safety for
critical industrial measurements
Product Features
Precision Measurement:
0.5% FS accuracy for reliable differential pressure monitoring
across liquid, gas, and vapor media.
Fixed range configurations (636D-0, 636D-1) tailored to specific
application needs.
Durable Construction:
NEMA 4X-rated 316 stainless steel enclosure resists corrosion,
dust, and water ingress.
Welded construction ensures integrity in harsh environments (e.g.,
offshore, chemical plants).
Wetted Materials:
316L stainless steel components compatible with most industrial
fluids and gases.
Reduces risk of material degradation or contamination in process
systems.
Safety & Compliance:
CSA-approved explosion-proof for Class I, Division 1 hazardous
areas (Groups B, C, D).
NACE compliance for offshore and corrosive environment
applications.
Output Versatility:
Standard 4–20 mA signal for long-distance transmission; optional
1–5 VDC for local systems.
Loop-powered design simplifies integration with PLCs, SCADA, and
control panels.
Environmental Resilience:
Operates in extreme temperatures and harsh conditions with minimal
maintenance.
Suitable for outdoor installations or dusty/particulate-laden
environments.
Technical Specifications
| Parameter | Value |
| Accuracy | ±0.5% FS |
| Pressure Range | Model-dependent (e.g., 636D-0: 0–10 psi; 636D-1: 0–50 psi, consult
datasheet) |
| Output Signal | 4–20 mA (standard), 1–5 VDC (optional) |
| Enclosure Rating | NEMA 4X (IP66) for dust/water protection |
| Wetted Materials | 316L stainless steel |
| Certification | CSA explosion-proof, NACE compliant |
| Operating Temperature | -40 to +180°F (-40 to +82°C) |
| Process Connections | 1/4" NPT male (standard) |
