Changsha Taihe Electronic Equipment Co., Ltd.
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PPM-WCY66-P500A Heating, Ventilating and Air Conditioning Differential Pressure Transducer
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 :
