EDAW-N1E1-02T1-HV Electronic Pressure Controller
Electronic pressure switch, range 0-20 psi, 1/4" male NPT, bottom connection, 316L SS, 2 SPDT relays, 4-20 mA output, 120/240 VAC voltage option
Supported Applications
The Dwyer Series EDA Electronic Pressure Controller integrates a pressure gage, two switches, and an optional transmitter into a single unit. Designed for indoor and outdoor use with weatherproof housing (IP65), the series is suitable for process control, compressor control, filter status monitoring, duct or building static pressure, and damper and fan control.
Operating Conditions & Performance
The Series EDA measures compatible liquids and gases across ranges from 0-20 psig to 0-3000 psig. Accuracy is specified as ±1% of FS including linearity, hysteresis, and repeatability for both the indicator and transmitter. Stability is rated at < ±2% of FS per year.
Operating conditions include an ambient temperature range of 20 to 140°F (-6.6 to 60°C) and a process temperature limit of 0 to 176°F (-18 to 80°C). The compensated temperature limits are 32 to 122°F (0 to 50°C), with a thermal effect of ±0.05% of FS/°F. Humidity ratings support 0 to 95% RH up to 104°F (40°C) non-condensing, and 10 to 50% at 140°F (60°C) non-condensing.
Pressure limits are defined as 1.5 x range for ranges up to 6,000 psi; the document also notes an 8,000 psi range with a 10,000 psi limit in specific contexts. The display updates every 600 ms when damping is set to 1.
Configuration Options
The series offers configurable options for housing style, process connections, conduit entries, measurement ranges, and output signals.
• Housing: Weatherproof (W) with a polycarbonate or glass-filled plastic enclosure meeting NEMA 4X / IP65 ratings. Note: The IP65 rating is not evaluated by UL.
• Process Connections: Available in 1/4" male NPT, 1/4" BSPT male, or 7/16" SAE configurations.
• Electrical Entry: Removable terminal blocks with two 1/2" female NPS conduit connections (E1).
• Ranges: Configurable from 0-20 psig through 0-3000 psig.
• Transmitter Outputs: Options include None, 4-20 mA, 1-5 VDC, 0-5 VDC, 1-6 VDC, and 0-10 VDC (direct or reverse output selection). Minimum excitation for transmitter operation is 14 VDC.
• Switching: Two SPDT relays with an electrical rating of 5A @ 120/240 VAC, 1A @ 30 VDC. Set points are adjustable from 0-100% of FS with manual or automatic reset.
• Power Supply: Standard models operate on 12-28 VDC/VAC (50/60 Hz), capable of functioning at 8 VDC for 45 seconds. The T5 option requires 14-30 VDC/VAC, and the -HV option supports 120-240 VAC.
• Wetted Materials: 316 L SS.
Key Product Differences
Variants within the Series EDA differ primarily by measurement range, transmitter output type, and power supply configuration. The model number structure follows the format: EDA - [HOUSING] - [PROCESS CONNECTION] - [CONDUIT CONNECTION] - [RANGE] - [TRANSMITTER OUTPUT] - [OPTIONS].
Housing variations include standard weatherproof enclosures (W). Process connection codes distinguish between 1/4" male NPT (-N1), BSPT, and SAE fittings. Range codes correspond to specific pressure spans: for example, -02 denotes 0-20 psig, while -10 indicates 0-3000 psig.
Transmitter output options are designated by T-codes: T0 (None), T1 (4-20 mA), T2 (1-5 VDC), T3 (0-5 VDC), T4 (1-6 VDC), and T5 (0-10 VDC). Additional option codes include -AT for an aluminum adhesive tag, -HV for 120-240 VAC power, and -NIST for a NIST certificate. Accessories such as the A-EDA-BRK flush mount bracket are available to support surface mounting.
- Display Units: psi, kg/cm², bar, in Hg, ft w.c., kPa, MPa, %FS, in w.c., mbar, cm w.c., mm Hg, or oz/in²
- Test Mode: Simulates input over the range without pressuring to easily test switches and transmitter
- Fail-safe: For sensor failure, over pressure, high temperature limit, low temperature limit, or keypad
- Alternation: Selectable alternation of set points between the relays for even wear on duplex pump applications.
| Accuracy | ± 1 % |
| Accuracy Detail | ± 1% of FS including linearity, hysteresis, and repeatability (indicator and transmitter) |
| Compensated Temperature, Max | 122 °F |
| Compensated Temperature, Min | 32 °F |
| Display Note | 4-digit backlit LCD (digits: 0.60˝H x 0.33˝ W) |
| Display Type | LCD |
| Enclosure Ratings | IP66, NEMA Type 4X |
| Materials | Polycarbonate |
| Number of Digits | 4 |
| Operating Temperature, Max | 140 °F |
| Operating Temperature, Min | 20 °F |
| Measurement Pressure, Min | 0 psi |
| Measurement Pressure Type | Gauge |
| Process Connection Size | 1/4 in |
| Process Connection Type | NPT Male |
| Process Temperature, Max | 176 °F |
| Process Temperature, Min | 0 °F |
| Repeatability | ± 1% |
| Repeatability Note | ± 1% of FS (switching only) |
| Requires Factory Media Review | true |
| Series ID | Series-EDA |
| Set Point Adjustment | Full Scale Adjustable (0-100%) |
| Stability | <± 2% of FS/year |
| Switch Indication | External LED for each relay on the front panel |
| Switch Rating | 5 A @ 120/240Vac, 1 A @ 30 Vdc |
| Switch Reset | Manual/Automatic |
| Switch Type | (2) SPDT |
| Thermal Effects | ± 0.05% of FS/°F |
| Warm Up Time | <10 s |
| Weight | 1.18 lb |
| Zero Setting Adjustable Range | Menu Scalable within the Range |