The Ashcroft® K8 is a proven pressure transducer incorporating polysilicon thin film technology. Modern low-pressure chemical vapor deposition methods provide simple, stable molecular bonds between a proven metal diaphragm and a polysilicon strain gage bridge. There are no epoxies or bonding agents to contribute to signal instability or drift. The K8 is offered in many standard pressure ranges with high quality millivolt output. Signal output is proportional to supply voltage and sensitivity varies between 6-18 mV/V at full scale. Transducer performance is directly traceable to the National Institute of Standards and Technology and specifications are conservatively stated.
Specifications
PERFORMANCE SPECIFICATIONS Accuracy Class (Span): Includes non-linearity ±0.5% ±1.0% (Terminal Point Method), hysteresis, non-repeatability Best Fit Straight Line (BFSL) ±0.25% ±0.4% Non-linearity Interchangeability ±0.5% ±1.0% Durability: 108 cycles with negligible performance change Stability: ±0.5% Span/yr
ENVIRONMENTAL SPECIFICATIONS Temperature Limits: Storage: –54 to 121°C (–65 to +250°F) Operating: –28 to 82°C (–20 to +180°F) Comp. Range: –28 to 82°C (–20 to +180°F) Thermal Coefficients: (68°F (20°C) ref.) %Span/°F Accuracy Class: 0.5%1% ZERO ±0.028% ±0.04% SPAN ±0.028% ±0.04% Optional (Accuracy Class only): ZERO ±0.014% N/A SPAN ±0.014% N/A Humidity: No performance effect at 95% relative humidity – non-condensing
FUNCTIONAL SPECIFICATIONS Standard Ranges (psi) 0/45* 0/300 0/3000 0/20,000* 0/60* 0/500 0/5000 0/100 0/750 0/7500* 0/150 0/1000 0/10,000* 0/200 0/2000 0/15,000* *1% accuracy ranges only. Consult factory for nonstandard ranges. Overpressure Limits (F.S.): 45- 3000- 7500- 2000500020,000 Proof 200% 150% 120% Burst 800% 300% 150% Vibration Sweep: Less than ±0.1%F.S. effect for 0-2000 Hz at 20 g’s in any axis Shock: Less than ±0.05% F.S. effect for 100 g’s, 20ms shock in any axis Response Time: Less than 5 ms Position Effect: Less than 0.01% F.S.
ELECTRICAL SPECIFICATIONS Output (Sensitivity): Varies from 6-18mv/V at full scale depending upon pressure range Consult factory for interchangeability within a particular pressure range Excitation: 3-10 Vdc regulated Supply Current: 1.4mA (nominal) Zero Offset: ±3mV/Vdc Bridge Resistance: 3500 ohms (nominal) Circuit to Case Insulation Resistance: 100 M ohms @ 50 Vdc
PHYSICAL SPECIFICATIONS Weight: 2 oz (approx. without cable F1 Type) MATERIALS: Socket: 300 series stainless steel Cable: 4 polyethylene coated, 30 AWG or UL approved 36, shielded, vented cable (24 AWG) Diaphragm: 17-4 PH stainless steel Standard Process Connections: (316 stainless steel) 1⁄8 NPT male or female 1⁄4 NPT male or female 1⁄4 SAE-J-514 (male) 1⁄4 AMINCO (female) required for pressures over 10,000 psi Other connections available
The store will not work correctly when cookies are disabled.
We use cookies to make your experience better.To comply with the new e-Privacy directive, we need to ask for your consent to set the cookies.Learn more.