Type K8 Thin Film Pressure Transducer with Unconditioned MilliVolt Ouput

:

0/45-
0/3000-
0/7500-
0/2000 0/5000
20,000
0/2000 0/5000
20,000
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
Position Effect: Less than 0.01% F.S.
ELECTRICAL SPECIFICATIONS
Output signal varies from 6-18mv/V at full scale,
output proportional to supply voltage.
Excitation: 3-10 Vdc regulated
Zero Offset: ±3mV/Vdc
Bridge Resistance: 3500 ohms (nominal)
Supply Current: 1.4mA (nominal)
Circuit to Case Insulation Resistance:
100 M ohms @ 50 Vdc
PHYSICAL CHARACTERISTICS
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
Type K8 Thin Film Pressure
Transducer with Unconditioned
MilliVolt Ouput
APPLICATIONS:
Hydraulic, hand tools, machine tool,
compressor, HVAC, medical, control
valves, construction equipment and
all general purpose industrial pro-
cess and OEM applications
BENEFITS & FEATURES:
0.5% and 1.0% accuracy
45-20,000 psi pressure ranges
Superior long-term stability
and repeatability
Wide range of pressure and
electrical connections available
Miniature size and light weight
Millivolt output
of Standards and Technology and

speci cations are conservatively
stated.
The Ashcroft
®
K8 transducer intro-
®
®
duces the bene ts of polysilicon thin
lm performance at affordable prices.
Modern low-pressure chemical vapor
deposition methods provide simple,
stable molecular bonds between a
proven metal diaphragm and a polysili-
con 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 mil-
livolt output. Signal output is propor-
tional to supply voltage, and sen-
sitivity varies between 6-18 mV/V
at full scale.
Transducer performance is directly
traceable to the National Institute
K 8
K 8
K 8
K 8
K 8
K 8
K 8
M V
M V
M V
M V
M V
M V
M V
M V
TO ORDER THIS TYPE K8 TRANSDUCER:
Select:
1. Type Con guration (K8)
2. Accuracy/TC

(3) 0.50%, ±0.014%/°F (5) 0.50%, ±0.028%/°F

(7) 1.0%, ±0.040%/°F
3. Pressure Connection

(M01)
1
/
8
NPT-M (F01)
1
/
8
NPT-F (M02)
1
/
4
NPT-M (F02)
1
/
4
NPT-F
(MEK)
7
/
16
-20 SAE-J-514 (FO9)
9
/
16
-18 UNF (T01)
1
/
4
Comp. Fit (000) None
4. Sensitivity

(MV) mV/V
5. Electrical Termination

(F1) 4 leads (F2) 36 cable, shielded, PVC sheathing
6. Pressure Range

(45) 45 psi through (20000) 20,000 psi (see standard ranges).
PERFORMANCE CHARACTERISTICS
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.
Accuracy Class (F.S.):
0.5%
1%
(Using T.P. method)
Best t straight line (BFSL) ±0.25
±0.4
Hysteresis
±0.15
±0.2
Nonrepeatability
±0.05
±0.07
Interchangeability
±0.5% ±1.0%
Durability:
10
8
cycles 20/80%F.S. with negligible
performance
change
Stability: ±0.5% F.S./yr.
CHARACTERISTICS
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 Coef cients: (68°F ref.) %F.S./°F
Standard:

0.5%
1%
ZERO
±0.028%
±0.04%
SPAN
±0.028%
±0.04%
Optional:
ZERO
±0.014% N/A
SPAN
±0.014% N/A
Humidity:
No performance effect at 95% relative
humidity noncondensing