Catalogue - Piezoresistive OEM Pressure Transducers - KELLER - (Version JPG)

Specifications. Excitation I = 1 mA

Series 3 L ... 10 L Standard Pressure Ranges (FS) in bar


PR	-1	-0,5 -0,2	-0,1	0,1	0,2	0,5	1	2	5	10	20
PD				0,1	0,2	0,5	1	2	5	10	20	50
PAA				0,1	0,2	0,5	1	2	5	10	20
PA							1	2	5	10	20	50	100	200	400	600
Signal Output typ.* [mV]	75	50 25	15	15	30	60	100	140	200	225	225	225	225	225	225	225
Overpressure	-1	-1 -1	-1	2,5	2,5	2,5	3	4	7	15	30	100	200	300	600	900
PD, neg. Overpressure [-]				1	1	1	2	3	5	7	10	10
PD- 9 L, max. Line Pressure		50
PD-10 L, max. Line Pressure		200 « ¹⁾

1000 225 1100

PR: Vented Gauge. Zero at atmospheric pressure PAA: Absolute. Zero at vacuum PA: Sealed Gauge. Zero at atmospheric pressure (at calibration day) PD: Differential * ± 40%

Bridge Resistance @ 25 °C Constant Supply Insulation @ 500 VCC

mA Ma

3500

1 nominal

100

± 20%

5 mA (see Remarks)

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PR-10 L-0.5 ⁽¹⁾ SN EQ925 ⁽²⁾

-----------------------------------------------------------------59/05


⁽³⁾ Temp	⁴⁾ Zero ⁽⁵⁾ +270	⁽⁶⁾ Comp	⁽⁷⁾ dZero
[°C]	[mV] [mV]	[mV]	[mV]
-8.6	-5.5 -50.6	-60.8	-2.6
1.0	-2.6 -49.1	-59.7	-1.4
25.8	4.6 -46.6	-58.2	0.0
50.6	11.3 -45.6	-58.6	-0.3
80.7	19.0 -46.4	-61.3	-3.0
COMP R1	= 220kOhm ⁽⁸⁾	R4 = 56.0 Ohm ⁽⁸⁾
ZERO	-2.2 mV ⁽⁹⁾	P_atm	962 mbar ⁽¹⁰
SENS	112.5 mV/bar at 1.000 mA
SENS	450 mV/bar at 4.000 mA ⁽¹¹⁾
	⁽¹⁴⁾ Lnorm		⁽¹⁵⁾ Lbfsl
⁽¹²⁾ [bar]	⁽¹³⁾ [mV]	[%FS]	[%FS]
0.000	0.0	0.00	0.06
0.250	112.2	-0.07	-0.06
0.500	224.9	0.08	0.06

Operating Temperature Compensated Range ⁽¹⁾Storage Temperature Vibration (20...5000 Hz) Endurance (FS @ 25 °C)

°C °C °C

Cycles

-30...100

0...50 (3 L...5 L)

-40...100 20

>100 x 10⁶ FS

-55...150 (optional, 0 >15 mm) -10...80 (6 L...10 L) -60...150 (optional)

Housing and Diaphragm Seal Ring Oil Filling

Dead Volume Change @ 25 °C

Electrical Connection Wires (pd-9 l, pd-10 l, 10 l)

Stainless steel, type 316 L

3 L...5 L: Nitrile 6 L..10 L: Viton®

Silicone oil ⁽¹⁾

<0,1mm³ / FS

0,09 mm², 12 x 0 0,1 mm, silicone sheathed, 0 1,2 mm,

length 7 cm (10 l), 10 cm (pd-9 l, pd-10 l)

Long Term Stability Ok ⁽¹⁶⁾Lot 649 ⁽¹⁷⁾Test 500 Volt ok ⁽¹⁸⁾Supply 1.000 mA ⁽¹⁹⁾

31.01.06 ⁽²⁰⁾ GOLI.D03DqK ⁽²⁰⁾


(the values indicate the max. error @ 1 mA supply)	Compensated Range 0...50 °C		Compensated Range -10...80 °C
(the values indicate the max. error @ 1 mA supply)	TC (Zero) ⁽⁴⁾[mV/°C]	Stability [mV]	TC (Zero) [mV/°C]	Stability [mV]
Series 3 L / 4 L	0,0375	0,75	-	-
Series 5 L	0,025	0,50	-	-
Series 6 L / 7 L / 8 L	0,025	0,50	0,050	0,75
Series 9 L	0,0175	0,50	0,0375	0,75
Series 10 L	0,0125	0,25	0,025	0,50

Each sensor is delivered with a calibration sheet with the following data:

1. Type (PR-10) and range (0,5 bar) of pressure sensor

2. Serial number of pressure sensor (not standard)

3. Test temperatures

4. Uncompensated zero offset in mV

5. Zero offset values, in mV, with test resistance (270 k£l) (for factory computation only)

6. Zero offset, in mV, with calculated compensation resistor R1 or R2

7. Temp. zero error, in mV, with compensation resistor R1 or R2

8. Compensation resistor values R1 / R2 and R3 / R4

9. Offset with compensation resistors R1/ R2 and R3 / R4 fitted (fine adjustment of zero with R5 potentiometer)

10. Ambient pressure, zero reference for absolute sensors < 20 bar

11. Sensitivity of pressure sensor

12. Pressure test points

13. Signal at pressure test points

14. Linearity (best straight line through zero)

15. Linearity (best straight line)

16. Results of long term stability

17. Lot-type (on request, identification of silicon chip)

18. Voltage insulation test

19. Excitation (constant current)

20. Date of test--------Test equipment

Remarks:

- The indicated specifications only apply for constant current supply; the sensor should not be excited higher than 1,5 mA. If supply is > 1,5 mA, signal shifts can occur due to self-heating. The sensor signal is proportional to the current. When exciting with constant voltage, the zero offset values remain the same, the sensitivity decreases approx. 1% per +5°C.

- 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).

Accuracy ⁽²⁾Offset at 25 °C Temperature Error Sensitivity

Line Pressure Influence Natural Frequency (Resonance)

%FS 0,25 typ. ⁽¹⁾ 0,5 max.

mV < 20 mV (compensated with R5 of 22 a ⁽³⁾)

% / °C < 0,01 (0...50 °c) < 0,02 (-10...80 °c)

mV/bar < 0,0125 (PD-9 L, PD-10 L)

kHz > 30

(1)

(2)

Others on request.

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

External compensation, potentiometer not supplied.

Temperature-Coefficients of Zero

Options

- Diaphragm/Housing: Hastelloy C-276

- Oil for low temperatures. Fluorinated oil. Olive oil

- Integrated temperature sensor (version PA, PAA, PR)

- Special characteristics: Linearity, overpressure, lower TC-zero

- Special tests

- Compensation PCB fitted

- Mathematical modelling: See data sheet Series 30 X

Subject to alterations

02/2009

KELLER AG für Druckmesstechnik St. Gallerstrasse 119 CH-8404 Winterthur Tel. +41 (0)52 - 235 25 25 Fax +41 (0)52 - 235 25 00

KELLER Ges. für Druckmesstechnik mbH Schwarzwaldstrasse 17 D-79798 Jestetten Tel. +49 (0)7745 - 9214 - 0 Fax +49 (0)7745 - 9214 - 60

Companies approved to ISO 9001

Piezoresistive OEM Pressure Transducers - KELLER - #2

PCB-mountable pressure sensor, Sensor, Stainless steel pressure sensor, Ceramic pressure sensor, Pressure transducer