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PIEZORESISTIVE PRESSURE TRANSDUCERS

SERIES 6 S / SC
SERIES 6 MC

VENTED GAUGE AND ABSOLUTE PRESSURE
These piezoresistive pressure transmitter-heads are produced on the new KELLER automatic
brazing lines, making possible the mass production of high quality pressure transmitters at low
cost. This new technology allows the crevice-free construction of the pressure port without
using seals or O-rings. In the brass sensor line (Series 6 MC), a steel insert and a nickel diaphragm are brazed into a brass housing. In the steel version (Series 6 S, Series 6 SC), all
parts are of stainless steel (AISI 316 L). The header with the silicon pressure sensor and the
glass feed-through pins are welded to the steel insert underneath the oil filling.
These transducers are the ideal basis for pressure transmitters, pressure switches or digital
pressure instruments. The transducer heads come in 3 basic versions:
6 MC: Compact version in brass, lowest price, accuracy 1 % FS. Ranges 5…200 bar
6 SC: Compact version in stainless steel, accuracy 0,5 % FS. Ranges: 5…200 bar.
6 S:
Stainless steel, highest performance, accuracy 0,5 % FS. Ranges: 0,3…1000 bar
SPECIFICATIONS

Series 6 SC / 6 MC: Ranges 5…200 bar
(Compact Version)

Excitation I = 4 mA

PR-6 …
PAA-6 …
PA-6 …
Overpressure
Signal Output typ.
PR: Vented gauge pressure

*0,3 *0,5 *1,0
0,3 0,5 1,0
*1,0
2,5 2,5 2,5
150 250 400

2,0
2,0
2,0
3,0
540

5,0
5,0
5,0
10
600

PAA: Absolute pressure

Excitation / Res. bridge @ 25 °C
Offset at 25 °C
Storage / Operating Temp.
Compensated Temp. Range
Oil Filling
Insulation @ 500 V
Vibration / Shock
Time Constant
Pressure Connection

10 20
* also neg. ranges possible
10 20
10 20 50 100 200 400 600
20 40 100 200 300 600 900
------------------------------------- 600

bar
bar
bar
bar
mV

PA: Sealed gauge, zero at 1 bar absolute

0,5...5 mA constant / 3500 Ω ± 20 %
≤ 20 mV typ.
≤ 100 mV max. (compensatable with R3...R5)
- 40...120 °C / - 20...80 °C
0...50 °C
Silicone
≥ 100 MΩ
5...2000 Hz/10 g, axes X/Y/Z / 20 g sinus 11 ms
< 1 millisecond (resonance > 30 kHz)
G 1/4”, Viton seal

Accuracy *
Temp. Coefficients
- of zero, 0...50 °C
- of gain 0...50 °C
Long term stability

6S
0,5 %FS

6 SC
0,5 %FS

6 MC
1 %FS

0,15 mV / °C
0,02 %/ °C
0,2 %FS

0,10 mV / °C
0,02 % / °C
0,2 %FS

0,1 mV / °C
0,03 % / °C
0,5 %FS

OPTIONS

Threads in NPT, UNF, Oil fillings, leads attached.

Series 6 S: Ranges 0,3…200 bar

Series 6 S: Ranges 400…1000 bar

* Including linearity, hysteresis and repeatability. Linearity calculated as best straight line through zero.

Ø 18,6

Ø 5,08

G 1/4"

G 1/4"

- OUT

- IN

+ IN

(ye)

12

- IN

12

12

ELECTRICAL CONNECTIONS

G 1/4"

Ø 18,6

Ø 18,6

+ OUT

(wh)

2
2

2
8

10

Hex. 19

10

Hex. 22

16,5

Ø 19
Ø 21
Ø 18

Hex. 22
BLUE

10
Ø15
~4

IN

BLACK

Ø 21

10

OUT
R1

2

Ø 19
~4

R2

BRIDGE

RED

~4
WHITE

OUT

R4

R5

6 SC / 6 MC: 5…200 bar

6 S: 0,3…200 bar

YELLOW

6 S: 400…600 bar

SENSOR

R3

IN

COMPENSATION

(Compact Version)
Subject to alterations

KELLER AG für Druckmesstechnik
KELLER Gesellschaft für Druckmesstechnik mbH
Companies approved to ISO 9001 / EN 29001

St. Gallerstrasse 119
Schwarzwaldstrasse 17

CH-8404 Winterthur
D-79798 Jestetten

9/00

Tel. 052 - 235 25 25
Tel. 07745 - 9214 - 0

Fax 052 - 235 25 00
Fax 07745 - 9214 - 50
www.keller-druck.com