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Dresser Instrument Division combines the proven polysilicon thin film transmitter technology with its longtime know-how of diaphragm seals to create the Ashcroft® KS Sanitary Pressure Transmitter. This all-welded stainless steel construction meets the 3A Sanitary Standard 74-02.
The KS Sanitary Pressure Transmitter introduces the benefits of polysilicon thin film performance at an affordable price. Modern low-pressure chemical vapor disposition methods provide simple, stable, molecular bonds between a proven metal diaphragm and polysilicon strain gage bridge. There are no epoxies or bonding agents to contribute to signal instability or drift.
The integral metal diaphragm and polysilicon bridge are virtually unaffected by shock, vibration or mounting position.
PERFORMANCE SPECIFICATIONS
Accuracy Class (Span): ±1.0%
Includes non-linearity,
(Terminal Point Method), hysteresis,
non-repeatability, zero offset and span setting errors
Best fit straight line (BFSL) ±0.75%
Includes non-linearity, hysteresis and
non-repeatability errors
ENVIRONMENTAL SPECIFICATIONS
Temperature
Storage –65/+250°F (–54 to +120°C)
Operating –20/+180°F (–28 to +82°C)
Compensated +30/+130°F (0 to +50°C)
Thermal Coefficients: (68°F (20°C) ref.) % Span/°F
Standard:
ZERO ±0.04%
SPAN ±0.04%
Humidity: No performance effect at 95% relative
humidity – noncondensing
FUNCTIONAL SPECIFICATIONS
Standard Ranges (psi)
0/30*† 0/300† vac./30*
0/60*† 0/500 vac./60*
0/100† 0/750 vac./100†
0/150† 0/1000
0/200†
Consult factory for nonstandard ranges.
*T/C multiply by 1.5 times.
†NEMA 4X only with F2 and C1 electrical connections.
Overpressure: (F.S.)
Proof 200%
Burst 800%
Vibration Sweep: Less than ±0.1% span effect for
0-2000 Hz at 20 g’s in any axis
Shock: Less than ±0.05% span effect for 100 g's,
20ms shock in any axis
Position Effect: Less than 0.01% span
ELECTRICAL SPECIFICATIONS
Transmitter Output Signal:
4-20mA (2 wire)
1-5 Vdc (3 wire)
1-6 Vdc (3 wire)
Supply Current: Less than 3mA for voltage output
Power Requirements:
10-36 Vdc unregulated
Reverse polarity protected
Transducer Output Signal:
2m V/V ratiometric
3m V/V ratiometric
10m V/V ratiometric
20m V/V ratiometric
Power Requirements: 5-10 Vdc regulated
Circuit to Case Insulation Resistance:
100 M ohms @ 50 Vdc
PHYSICAL SPECIFICATIONS
Enclosure: NEMA 4X
Weight: 13.5 oz (approx. without cable)
MATERIALS
Case: 300 series stainless steel
Cable: No. 24 AWG, 36˝ PVC, shielded, vented, UL approved
Diaphragm: 316L SS, 12-20 Ra surface finish
Standard Process Connections:
316L stainless steel electropolished
Tri-Clamp® style 11⁄2˝, 2˝
Fill: USP grade 99.5% glycerin fill, contact factory
for other fill fluids
Consult factory for pricing, availability and
required minimums for nonstandard products.
WARNING! Sensitive Diaphragm!
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