Keller M5 H Specifications

Ultra-Fast and Precise PressUre transmitters

bandwidth 50 khz / resistant UP to 200 °c / accUracy 0,1 %Fs

The Series M5 pressure transmitters, with their 0…50 kHz dynamic range and M5 pressure
connection, are optimized both for dynamic (i.e. fast pressure pulsations at close proximity) as
well as static pressure measurements. The sensor design enables excellent media compatibility
and supports measurements at temperatures of up to 200 °C without cooling adapters.

Electronics

The circuitry for the Series M5 HB was specically developed to take advantage of the high
dynamic range of the M5 sensor head. The signal path remains entirely analog, although it is
readjusted in real time by means of a high-precision digital compensation circuit. This ensures
the full dynamic range of the sensor and the accuracy of the measurement signal are maintained
across the entire 0…50 kHz bandwidth. With a temperature range of -40…+125 °C, the remote

signal converter satises the exceptional demands associated with hostile environments; e.g.,

engine test benches. The sensor head alone (see the data sheet for the Series M5), i.e., without
the remote signal converter, is available for those applications better served by a sensor with

80 mV output (@ 1 mA supply). Included with this conguration is a calibration card providing the

user with actual test data taken from the sensor during factory calibration.

Sensor technology

The Series M5 sensor incorporates a stable silicon sensor which is backside-soldered directly

to a supporting element designed for excellent uid dynamics. This construction eliminates the

disadvantages of sealants, adhesives, separating membranes or capillary tubes in high tem-

perature environments. The practically-ush connection to the measurement media is critical

to the excellent dynamic range of 0…50 kHz. The micromechanical design delivers absolute
measuring ranges of 3, 10 and 30 bar, overpressure protection of up to 5 times measuring range
and effective isolation of mounting forces.

series m5 hb

Series M5 HB

Performance characteristics

• Sensor head capable of exposure to 200 °C

• Broad compensated temperature range, with a choice of either -20…125 °C or -40…180 °C

• Excellent dynamic response, up to 50 kHz (pulsation measurements)

• Insensitive to shock and vibration

• Extremely compact design, pressure connection: M5 x 0,5 ne thread

• Teon FEP cable with IP67 ferrule, suitable for use on test benches

• Pressure ranges of 3 bar, 10 bar and 30 bar (absolute)

Sensor head

(1:1)

Series M5 HB

Sensor head

Measurement amplier

1,5 m

Sensor Head

ELECTRICAL CONNECTIONS

(shielded cables recommended)

Function

+Vcc 1 3

-OUT * 2 n.c.

GND 3 1

+OUT 4 2

n.c. 5 n.c.

Shield Thread Thread

* Connected to GND for 4-wire measurement

M12

A-coded

Binder

723

KELLER AG für Druckmesstechnik

CH-8404 Winterthur

[phone]
[e-mail]

Recommended tightening torque 1,5…2,5 Nm

KELLER Ges. für Druckmesstechnik mbH

D-79798 Jestetten

[phone]
[e-mail]

KELLER America

Newport News, Virginia

1 877 253 5537
[e-mail]

Edition 08/2014

Subject to alterations
Companies approved to ISO 9001

www.keller-druck.com

Specications

Pressure ranges, absolute
PAA 0…3 0…10 0…30 bar

Overpressure / burst pressure 15 50 90 bar

PAA: Absolute pressure. Zero at vacuum.

Intermediate ranges show
the overpressure resistance
for the next biggest
range listed.

Accuracy

Total Error Band

1)

± 0,1 %FS

2)

(choice of) ± 0,5 %FS @ -20 to +125 °C sensor temperature

± 1,0 %FS @ -40 to +180 °C sensor temperature

Operating Temperature of Sensor Head -50…+180 °C

Operating Temperature of Electronics -40…+125 °C
Temp. Coefcients for Amplier Electronics ± 0,01 %/K max.

1)

Linearity (best straight line), hysteresis and repeatability

2)

Accuracy and temperature error

Type 3- and 4-wire
Signal Output 0…10 V

Excitation 13…32 VDC
Load Resistance > 5 kΩ
Limiting Frequency (-3 dB) 50 kHz min.
Power Consumption (off-load) 15 mA max.
Electrical Connections M12 plug (5-pin), Binder 723 (5-pin)
Pressure Connection Metric ne thread: M5 x 0,5 male
Cable (between sensor and electronics) 1,5 m FEP cable with Ø 2,9 mm shield
Insulation > 10 MΩ @ 300 VDC
Materials in Contact with Media Stainless steel AISI 316L (DIN 1.4404 / 1.4435), silicon, gold,

external copper seal
Media Compatibility Oil, fuels (diesel, petrol, etc.), gases, coolants, etc.

Protection IP67 (with a suitable mating plug)
EMC EN 61000-6-2 / EN 61000-6-3 / EN 61326-2-3

Options

• Other pressure connections via thread adapter

• Other compensated pressure and temperature ranges

Frequency response for the amplier electronics of the Series M5 HB

50

40

30

20

10

0

-10

Gain [dB]

-20

-30

-40

-50
1k 10k 100k

The 'HB' electronics designation stands for high bandwidth and is associated with the project name HummingBird.

KELLER AG für Druckmesstechnik
CH-8404 Winterthur

[phone]
[e-mail]

KELLER Ges. für Druckmesstechnik mbH

D-79798 Jestetten

[phone]
[e-mail]

Frequency [Hz]

60kHz

-3dB

KELLER America

Newport News, Virginia

1 877 253 5537
[e-mail]

225

180

135

90

45

0

-45

Phase [deg]

-90

-135

-180

-225

1M

Edition 08/2014

Subject to alterations
Companies approved to ISO 9001

www.keller-druck.com