Differential Pressure Transmitter (SA-166)

Model 166 series are low range differential pressure transducers and transmitters. It features a flame retardant plastic enclosure with a metal backing. The unique design makes it can be used at outdoor environment and with easy access to zero and sensitivity adjustments. The pressure range covers from 0.1"WC to 100"WC, unidirectional or bidirectional. The output can be 3-wire 0 to 5V, 0 to 10V, or 2-wire 4 to 20 mA, fully protected against short Circuit and incorrect wiring. In the voltage version, the output can go down to true zero. The units are temperature compensated. The accuracy can be 1.0%, 0.4% or 0.25% at room temperature. The patented stainless steel sensor provides good corrosion resistance, excellent performance and long term stability. Our unique production setup can also make special pressure range (e. G. -0.5"WC to +3.5"WC) to meet special applications. Applications: *HVAC and VAV Control *Clean Room and Fume Hood Control Duct Static Pressure Measurement Draft Control Furnace Air flow Control Power Plant Air Flow Monitor and Control Features: Up to 15 PSI Overpressure on All Ranges Miswiring Full Protection Unsymmetrical Bidrectional Pressure Ranges True Zero Output for Voltage Unit Meets CE Conformance Standards Meets RoHS Requirements Pressure Ranges as Low as 10Pa only! Model 166 Specifications Performance Data Standard Optional Optional Accuracy* (at room temp) ± 1.0%FS ± 0.4%FS ± 0.25%FS Non-Linearity(BFSL) ± 0.97%FS ± 0.33%FS ± 0.20%FS Hysteresis ± 0.20%FS ± 0.20%FS ± 0.10%FS Non-Repeatability ± 0.10%FS ± 0.10%FS ± 0.10%FS Thermal Effects Compensated Range 0 to 170oF (-18to 77oC) Zero/Span Shift <0.028%FS/oF (<0.05%FS/oC) Maximum Line Pressure 15PSI(100kPa) Overpressure 15PSI(100kPa) in Positive or Negative Direction for all Ranges. Warm-up shift ± 0.1%FS Position Effect Each unit is calibrated in the vertical position. For best accuracy, adjust zero of the unit if it is mounted in other position. It is not necessary to adjust the sensitivity. * RSS of Non-Linearity, Hysteresis, and Non-Repeatability. Environmental Data and Physical Description Operating Temperature 0 to 170oF (-18 to 77oC) Storage Temperature -65 to 185oF (-54 to 85oC) Electrical Termination Screw Terminal Block Pressure Fittings 3/16" O. D. Barbed brass for 1/8" I. D. Push-on tubing(standard). 8mm O. D. Barbed brass(optional) Output Adjustment Accessible under the top slip cover. Pressure Media Typically air or similar non-conducting gases Enclosure PC+ABS Alloy, 94V-0 and Steel Weight 8.65OZ/245g Installation See Diagram 1 for outline and installation. Electrical Data (Voltage) Circuit 3-Wire (+EXC, -EXC, OUTPUT), Protected from Miswiring Excitation 16-32VDC Output 0-5VDC, 0-10VDC Output Impedance ≤ 5.0 OHMS * Zero output: Factory set at ± 25mV(0-5VDC), ± 50mV(0-10VDC) Span output: Factory set at ± 25mV(0-5VDC), ± 50mV(0-10VDC) Calibrate with a 50K OHM load, operable with a load greater than 5K OHM for 0-5VDC output, greater than 10K OHM for 0-10VDC output. Electrical Data (Current) Circuit 2-Wire(+EXC, -EXC), Protected from Miswiring Output 4-20mA Bidirectional Output at Zero 12mA as standard Excitation 16-32VDC(see diagram 2 for maximum loop resistance) External Load 0-800 OHM ** Zero output: Factory set at ± 0.08mA Span output: Factory set at ± 0.08mA Calibrated with a 250 OHM load and a 24VDC supply voltage.