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Setra’s 264 is the paradigm for very low differential pressure measurement. Critical to applications in HVAC building automation, healthcare and pharmaceutical facilities, the 264 low differential pressure transducer has held a steadfast reputation for reliability and consistency for over two decades.
The 264 features a dead-ended stainless steel welded capacitive sensing element which necessitates minimal amplification and provides incomparable accuracy and long term stability. With its 3 year unconditional warranty, the 264 ensures top performance granting users peace of mind.
Versatile, the 264 provides users with different mounting options. A base mount for installation anywhere and a DINrail configuration for when applications where maximum space efficiency is essential. In addition to its advanced features and functions, Setra’s 264 is equipped with a durable physical construction, brass barbed fittings and an optional conduit cover.
Performance Data | Physical Description | ||||
| Standard | Optional | Case | Fire-Retardant Glass Filled Polyester (UL 94 V-O Approved) | |
Accuracy RSS1 (at constant temp) | ±1.0% FS | ±0.4% FS | ±0.25% FS | Electrical Connection | Screw Terminal Strip |
Non-Linearity, BFSL | ±0.96% FS | ±0.38% FS | ±0.22% FS | Mounting | 4 screw holes on removable zinc plated steel base (designed for 2.75” snap track) |
Hysteresis | 0.10% FS | 0.10% FS | 0.10% FS | Pressure Fittings | 3/16” O.D. barbed brass for 1/4” push on tubing |
Thermal Effects | Zero and Span Adjustments | Accessible on top of case | |||
Compensated Range ºF (ºC) | 0 to +150 (-18 to +65) | Weight (approx.) | 10 Ounces | ||
Zero/ Span Shift %FS/100ºF(50ºC) | ±0.033 (±0.06) | Electrical Data (Voltage) | |||
Maximum Line Pressure | 10 PSI | Circuit | 3-Wire (Com, Out, Exc) | ||
Overpressure | Up to 10 PSI (Range Development) | Excitation/ Output4 | 9 to 30 VDC / 0 to 5 VDC5,6 | ||
Long Term Stability | 0.5% FS/1 YR | Output Impedance | 100 ohms | ||
Environmental Data | Bidirectional output at zero pressure | 2.5 VDC5,6 | |||
Operating Temperature3 °F (°C) | 0 to +175 (-18 to +79) | Electrical Data (Current) | |||
Storage Temperature °F (°C) | -65 to +250 (-54 to +121) | Circuit | 2-Wire | ||
Pressure Media | Output2 | 4 to 20 mA8,9 | |||
Typically air or similar non-conducting gases. | External Load | 0 to 800 ohms | |||
Position Effect | Minimum Supply Voltage (VDC) | 9 + 0.02 x (resistance of receiver plus line) | |||
Unit is factory calibrated at 0g effect in the vertical position | Range | %FS/G | Maximum Supply Voltage (VDC) | 30 + 0.004 x (resistance of receiver plus line) | |
0.1 in. WC | 2.3 | Bidirectional output at zero pressure | 12 mA8,9 | ||
0.25in. WC | 1 | 1 RSS of Non-Linearity, Hysteresis, and Non-Repeatability. | |||
0.5 in. WC | 0.5 | ||||
1.0 in. WC | 0.3 | ||||
2.5 in. WC | 0.2 | ||||
10 in. WC | 0.15 |
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- Variable Air Volume and Fan Control (VAV)
- Environmental Pollution Control
- Lab & Fume Hood Control