Product Introduction:
PPM-WCY66-P500A pressure transducers sense differential or gauge
(static) pressure and converts this pressure difference to a
proportional electrical output. The 266 is offered with a high
level 0-10 VDC and 0 -5 VDC output or a 4-20 mA output.
Used in Building Energy Management Systems, these transducers are
capable of measuring pressures and flows with the accuracy
necessary for proper building pressurization and air flow control.
low pressure transducers are available for air pressure ranges as
low as 0 to ±50 Pa full scale up to 5 kPa full scale. Static
accuracy is ±1% full scale in normal ambient temperature
environments. The units are temperature compensated to less than
±0.06% FS/°C (±0.033% FS/oF) of thermal error over the temperature
range of -18 to +65 °C (0oF to +150oF). utilizes an all stainless
steel micro- tig welded sensor. The tensioned stainless steel
diaphragm and insulated stainless steel electrode, positioned close
to the diaphragm, form a variable capacitor. Positive pressure
moves the diaphragm toward the electrode, increasing the
capacitance.
Applications :
Heating, Ventilating and Air Conditioning (HVAC)
Energy Management Systems
Variable Air Volume and Fan Control (VAV)
Environmental Pollution Control
Static Duct and Clean Room Pressures
Fume Hood Control
Oven Pressurization and Furnace Draft Controls
Technical Parameters :
| Accuracy RSS* (at constant temp.) | ±1.0 FS |
| Non-Linearity (BFSL) | ±0.98 FS |
| Hysteresis | 0.10 FS |
| Non-Repeatability | 0.05 FS |
| Thermal Effects |
| Compensated Range °C(°F) | -18 to +65 (0 to +150) |
| Zero/Span Shift FS/°C(°F) | ±0.06 (±0.033) |
| Maximum Line Pressure | 69 kPa |
| Overpressure (DP on either side): |
| Range | Overpressure |
| <250 Pa | 14 kPa |
250 up to 625 Pa >625Pa | 35 kPa 69 kPa |
| Warm-up Shift | ±0.1 FS Total |
| Position Effect*** |
| Range | Zero Offset ( FS/G |
| To 250 Pa | 0.6 |
| To 1.3 kPa | 0.14 |
| To 7.5 kPa | 0.06 |
| Temperature |
| Operating* °C (°F) | -18 to +65 (0 to +150) |
| Storage °C (°F) | -40 to +85 (-40 to +185) |
| Physical Description |
| Case | Fire Retardent Glass Filled Polyester (UL 94 V-0 Approved) |
| Electrical Connection | Screw Terminal Strip |
| Pressure Fittings | 6.2 mm |
| Weight | 150 grams (5.3 oz.) |
| Electrical Data (Voltage) |
| Circuit | 3-Wire (Com, Out, Exc) |
| Excitation/Output* | 12 to 30 VDC/VAC / 0 to10 VDC** 9 to 30 VDC/VAC / 0 to 5 VDC 9 to 30 VDC/VAC / 0 to 5 VDC** |
| Bidirectional output at zero |
| pressure: | 2.5 VDC (±50 mV) |
| Output Impedance | 100 Ohms |
| Circuit | 2-Wire |
| Output* | 4 to 20 mA** |
| Bidirectional output at zero |
| pressure: | 12 mA |
| Electrical Load | 0 to 800 Ohms |
| Minimum loop supply voltage (VDC) = 9 + 0.02 x (Resistance of
receiver plus line). |
| Maximum loop supply voltage (VDC) = 30 + 0.004 x (Resistance of
receiver plus line). |
Dimensions in mm :
