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KELLER
Spécifications Excitation I = 1 mA
Pressure Ranges (FS) and Overpressure in Bar. Signal Output in mV.
PAA-8
10
20
PA-8
10
20
50
100
200
400
600
1000
Signal Output typ.*
225
225
225
225
225
225
225
225
Overpressure
20
40
100
200
300
600
900
1100
PAA: Absolute. Zero at vacuum PA: Sealed Gauge. Zero at atmospheric pressure (at calibration day) * ± 40%
Bridge Resistance @ 25 °C
n
3500
± 20%
Constant Current Supply
mA
1 nominal
5 max.
Insulation @ 500 VCC
Mn
100
Operating Temperature
°C
-30.100
-55.150 (optional)
Compensated Range
°C
0...50(1)
-10...80™
Storage Temperature
°C
-40.100
-60.150
Vibration (20...5000 Hz)
g
20
Endurance (FS @ 25 °C)
Cycles
> 100 x 106 FS
Housing and Diaphragm
Stainless Steel, AISI 316 L
Seal Ring
Viton(1), 0 12 x 1,5 mm
Oil Filling
Silicone Oil(1)
Weight
13 g
Dead Volume Change @ 25 °C
< 0,1 mm3 / FS
Electrical Wires (optional)
0,09 mm2, 12 x 0 0,1 mm, Silicone
o0 1,2 mm, Length 7 cm(1)
Accuracy(2)
%FS
0,5 typ.(1)
1 max.
--------51
PA-8/1000 bar/8467.8 (a)
SN 22747 (b)
(c)Temp
(d) Zero (e) -510
(f) Comp
(g) dZero
[°C]
[mV] [mV]
[mV]
[mV]
-9.2
-13.3 -7.6
-0.9
-0.4
1.0
-13.4 -7.5
-0.8
-0.3
26.1
-13.7 -7.3
-0.5
0.0
50.8
-14.3 -7.1
-0.3
0.2
80.8
-15.1 -6.8
-0.0
0.5
COMP
R2 = 510 kOhm (h)
R4 = 27.0 Ohm (h)
ZERO
-0.5 mV (i)
SENS
0.171 mV/bar at 1.000 mA (j)
SENS
0.683 mV/bar at 4.000 mA (j)
LIN
(m) Lnorm
(n) Lbfsl
(k) [bar]
(l) [mV]
[%FS]
[%FS]
0.000
0.0
0.00
0.14
500.000
85.0
-0.19
-0.14
1000.000
171.1
0.19
0.14
High Pressure Test Ok (o)
Lot 5.0412.00 (p)
Test 500 Volt Ok (q)
Supply 1.000 mA (r)
27.06.06 (s)
-----------FLOH.G03CkS (s)
Each sensor is delivered with a calibration sheet with the following data:
(a) Type (PA-8) and range (1000 bar) of pressure sensor
(b) Barcode & serial number of pressure sensor (not standard)
(c) Test temperatures
(d) Uncompensated zero offset in mV
(e) Zero offset values, in mV, with resistance R1 (+) or R2 (-), in kQ (for factory computation only)
(f) Zero offset, in mV, with calculated compensation resistors
(g) Temp. zero error, in mV, with compensation resistors
(h) Compensation resistor values R1 / R2 and R3 / R4
(i) Offset with compensation resistors R1/ R2 and R3 / R4 fitted (fine adjustment of zero with R5 potentiometer)
(j) Sensitivity of pressure sensor
(k) Pressure test points
(l) Signal at pressure test points
(m) Linearity (best straight line through zero)
(n) Linearity (best straight line)
(o) Results of long term stability
(p) Lot (on request, identification of silicon chip)
(q) Voltage insulation test
(r) Excitation (constant current)
(s) Date of test --------Test equipment
Remarks:
- The indicated specifications only apply for constant current supply. The sensor should be excited between 0,5 and 5 mA. The sensor signal is proportional to the current.
- If exposed to extreme temperatures, the compensation resistors should have a temperature coefficient of < 50 ppm/°C. Sensor and resistors can be exposed to different temperatures.
- The sensors may be ordered with integrated compensation resistors (surcharge).
Offset at 25 °C mV Temperature Error
- Zero mV / °C
- Sensitivity % / °C Long Term Stability typ. mV Natural Frequency (Resonance) kHz
< 5 mV (compensated with R5 of 20 n(3))
0...50 °C
< 0,025
< 0,02 0,5
> 30
-10...80 °C
< 0,05
< 0,05
0,75
-55...150 °C
< 0,075
< 0,07 1,25
(1) Others on request.
(2) Including linearity, hysteresis and repeatability. Linearity calculated as best straight line through zero. Note: Generally, accuracy and overload is improved by factor of 2 to 4 if the sensor is used in the range of 0...50 %FS.
(3) External compensation, potentiometer not supplied.
Options
- Platinum- or Hastelloy C-276 diaphragm. Gold-plated diaphragm. Transducer all Hastelloy C-276
- Oil for low temperatures. Fluorinated oil. Olive oil
- Special characteristics: Linearity, overpressure, lower TC-zero
- Special tests
- All pressure ranges between 10 and 1000 bar
- Other temperature ranges
- Compensation PCB fitted
Subject to alterations 02/07
KELLER AG fur Druckmesstechnik St. Gallerstrasse 119 CH-8404 Winterthur Tel. +41 (0)52 - 235 25 25 Fax +41 (0)52 - 235 25 00
KELLER Ges. fur Druckmesstechnik mbH Schwarzwaldstrasse 17 D-79798 Jestetten Tel. +49 (0)7745 - 9214 - 0 Fax +49 (0)7745 - 9214 - 60
Companies approved to ISO 9001:2000
www.keller-druck.com
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