DPT Differential Low Pressure Transmitter
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The DPT Series is based on a piezoresistive, silicon sensing element which senses Differential Pressure and provides an analog output. The hinged cover on the DPT can be easily opened using the integrated locking tab on the side of the enclosure. This allows for easy access to the zero function and field selectable ranges and outputs. The DPT Series also includes an optional, five digit LCD for installation and monitoring support. Field selectable analog outputs include 0-5 and 0-10 VDC, or 4-20 mA which correlate to a specific uni or bi-directional pressure range from 0-0.1” up to 0-40” of water column, depending on your model selection. Each unit must be ordered with the specific pressure range needed to meet desired application requirements. Options include a Pitot Tube or Din Rail Clip.
Applications:
- Building and Duct Static Pressure,
- Flter Monitoring,
- Air Fow Measurement,
- Process Control
Available Model Numbers:
| Part Number | Input Range Options | Description |
| DPT‐S‐1 | 0‐0.1", 0.2", 0.5", 1", | Without Display |
| DPT‐S‐2 | 0‐1", 2", 5", 10", | Without Display |
| DPT‐S‐3 | 0‐10", 20", 30", 40", | Without Display |
| DPT‐S‐1‐A | 0‐0.1", 0.2", 0.5", 1", | Without Display, With Pitot Tube and DIN Rail Clip |
| DPT‐S‐2‐A | 0‐1", 2", 5", 10", | Without Display, With Pitot Tube and DIN Rail Clip |
| DPT‐S‐3‐A | 0‐10", 20", 30", 40", | Without Display, With Pitot Tube and DIN Rail Clip |
| DPT‐S‐1‐D | 0‐0.1", 0.2", 0.5", 1", | With Display |
| DPT‐S‐2‐D | 0‐1", 2", 5", 10", | With Display |
| DPT‐S‐3‐D | 0‐10", 20", 30", 40", | With Display |
| DPT‐S‐1‐D‐A | 0‐0.1", 0.2", 0.5", 1", | With Display, Pitot Tube, and DIN Rail Clip |
| DPT‐S‐2‐D‐A | 0‐1", 2", 5", 10", | With Display, Pitot Tube, and DIN Rail Clip |
| DPT‐S‐3‐D‐A | 0‐10", 20", 30", 40", | With Display, Pitot Tube, and DIN Rail Clip |
Specifications:
- Supply Voltage:
- 4‐20 mA Output: 16‐36 VDC (250 Ω Load max.) / 22‐36 VDC (500 Ω Load max.)
- 0‐5 VDC / 0‐10 VDC Output: 16‐36 VDC / 24 VAC (+/‐ 10%)
- Supply Current:
- 4‐20 mA Output: 24 mA minimum | 0‐5 VDC / 0‐10 VDC Output: 6 mA maximum
- Output Signals:
- Current Output: 4‐20 mA, 2‐Wire (Standard); (Current limited to 21.4 mA max)
- Voltage Signals: 0‐5 VDC / 0‐10 VDC, 3‐Wire; Output limited @ 5.25 & 10.5 VDC)
- Response Time (0‐100% FSO): 8 seconds
- Output Update Rate: 1 second
- Accuracy: +/‐ 0.5% FSO; +/‐ 0.25% (Only for Specified Range)
- Zero Function: Pushbutton Zero Function
- Thermal Effects: +/‐ 0.067% FSO / °F (0.12% FSO / °C)
- Proof Pressure / Burst Pressure³:
- DPT‐S‐1: Proof: 270 inWC (67.2 kPa) | Burst: 415 inWC (103.3 kPa) for 1 inWC (249.8 Pa)
- DPT‐S‐2: Proof: 350 inWC (87.12 kPa) | Burst: 550 inWC (136.9 kPa) for 10 inWC (2490.8 Pa)
- DPT‐S‐3: Proof: 562 inWC (140 kPa) | Burst: 1004.7 inWC (250 kPa) for 40 inWC (9963.6 Pa)
- Operating Temperature Range: ‐4 to 185 °F (‐20 to 85 °C)
- Compensated Temperature Range: 32 to 122 °F (0 to 50 °C)
- Storage Temperature Range: ‐22 to 185 °F (‐30 to 85 °C)
- Operating Humidity Range: 10 to 95% RH, non‐condensing
- Media Types: Dry air or inert non‐conductive gases
- Enclosure Material / Flammability Rating: Flame Retardant Polycarbonate; UL94‐5VA
- Wiring Connections: Finger Pushbutton (Spring) Terminal Blocks; accepts 16‐24 AWG wires
- Conduit Knockouts: Watertight Cordgrip Installed (1/2" NPT Conduit fittings accepted when Cordgrip removed)
- Pressure Fitting Material: Nickel Plated Brass or Stainless Steel
- Tubing Size Accepted: 1/4" O.D. x 0.170" I.D. Poly Tubing
Note: Shift is relative to 71°F (21.5°
