PHYWE Cobra4 User manual

Brand: PHYWE

Model: Cobra4

Type: User manual

Betri

ebsanle

tung

Cobra4 Sensor-Unit Pressure, 7 bar absolute

12647-00

PHYWE Systeme GmbH & Co. KG

Robert-Bosch-Breite 10

D-37079 Göttingen

Telefon +49 (0) 551 604-0

Fax +49 (0) 551 604-107

E-mail info@phywe.de

Internet www.phywe.de

Fig. 1: 12647-00 Cobra4 Sensor-Unit Pressure, 7 bar absolute

Das Gerät entspricht

den zutreffenden

Rahmenrichtl

nien

TABLE OF CONTENTS

1 SAFTEY INSTRUCTIONS

2 PURPOSE AND CHARACTERISTICS

3 FUNCTIONAL AND OPERATING ELEMENTS

3.1 Operating elements

3.2 Sensor interface

4 OPERATING NOTES

5 OPERATION

5.1 Start-up

5.2 Recording of pressure values

6 TECHNICAL DATA

7 SCOPE OF SUPPLY

8 ACCESSORIES

8.1 Connecting tubes and tube clamps

8.2 Holder for the Sensor-Unit

9 WARRANTY

10 DISPOSAL

1 SAFETY INSTRUCTIONS

• Read the operating instructions thoroughly and complete-

ly prior to starting the Cobra4 Sensor-Unit “Pressure,

7 bar absolute”. The operating instructions of the data

transfer device that is used in combination with the Sen-

sor-Unit for recording the measurement values (Cobra4

Wireless-Link, Cobra4 USB-Link, Cobra4 Junior-Link, or

Cobra4 Mobile-Link) must also be read. This is important

for your own protection and for avoiding damage to the

units.

• Use the Cobra4 Sensor-Unit “Pressure, 7 bar absolute”

solely for its intended purpose.

• The unit is intended for use in dry rooms where there is

no risk of explosion.

• Protect the Cobra4 Sensor-Unit “Pressure, 7 bar abso-

lute” against dust, humidity, and vapours. Clean the unit

with a slightly moist, lint-free cloth. Do not use any ag-

gressive cleaning agents or solvents.

• Do not open the housing of the Cobra4 Sensor-Unit

“Pressure, 7 bar absolute”.

• Ensure that no liquids penetrate the housing of the Sen-

sor-Unit, since otherwise the Sensor-Unit would be dam-

aged.

• Connect the data output of the Cobra4 Sensor-Unit

“Pressure, 7 bar absolute” solely to the intended mea-

surement data recording devices and sensors.

• Based on today’s state of software development, it is im-

possible to guarantee that a product is absolutely free

from errors. This is why PHYWE Systeme GmbH & Co.

KG assumes no liability for damage resulting from the in-

stallation or use of this unit.

2 PURPOSE AND CHARACTERISTICS

The Cobra4 Sensor-Unit “Pressure, 7 bar absolute” is used to

measure the absolute pressure. Depending on the type of

application, the Cobra4 Sensor-Unit can be connected to the

following measurement data recording devices for transfer-

ring the measured values:

- Cobra4 Wireless-Link (12601-00) for the wireless data

transfer to a computer

- Cobra4 USB-Link (12610-00) for the data transfer to a

computer via a USB cable

- Cobra4 Junior-Link (12615-00) for the data transfer to a

computer via a USB cable

Hand-held measuring instrument Cobra4 Mobile-Link

(12620-00).

For the absolute pressure measurement, the Sensor-Unit is

equipped with a pressure sensor. In order to be able to con-

nect it to various types of devices and instruments, the sen-

sor is equipped with a sturdy metal connector with an outer

diameter of 8 mm. Via this connector, the pressure sensor

can be connected to all kinds of measurement locations via a

suitable connecting tube (e.g. rubber tube, vacuum, inner di-

ameter 6 mm; part no.: 39286-00). For safety reasons, such

a tube connection should always be secured with suitable

tube clamps (see chapter 8 - Accessories).

3 FUNCTIONAL AND OPERATING ELEMENTS

3.2 Operating elements

The Cobra4 Sensor-Unit “Pressure, 7 bar absolute” has no

manual operating elements. Its operation is controlled by the

hand-held measuring instrument Cobra4 Mobile-Link or by a

computer if it is connected via a Cobra4 USB-Link, Cobra4

Junior-Link, or Cobra4 Wireless-Link as soon as the connec-

tion between the Cobra4 Sensor-Unit “Pressure, 7 bar abso-

lute” and one of the four measurement data recording devic-

es is set up.

3.2 Sensor interface

The measured pressure values can be read out of the Sen-

sor-Unit with a maximum data rate of 200 measurements per

seconds (200 Hz). Just like all of the other settings, the de-

sired measuring frequency is set via the connected mea-

surement data recording devices.

4 OPERATING NOTES

In combination with the respective data transfer devices (Co-

bra4 Wireless-Link, Cobra4 USB-Link, Cobra4 Junior-Link,

and Cobra4 Mobile-Link), the Cobra4 Sensor-Unit “Pressure,

7 bar absolute” fulfils the technical requirements that are

summarised in the current guidelines of the European Com-

munity. The characteristics of the product entitle it to bear the

CE mark.

The unit must be used under the supervision of an expert and

in the electromagnetically controlled environment at research,

teaching, and training facilities (schools, universities, insti-

tutes, and laboratories).

This means that, in such an environment, radio transmission

devices, e.g. mobile phones, should not be used in the direct

vicinity of the unit. The connected cables must not be longer

than 2 m. Electrostatic charges or similar electromagnetic

phenomena (HF, bursts, indirect lightning discharge, etc.)

may affect the unit so that it will not work within the specified

data range.

The following measures reduce or eliminate potential interfe-

rences: avoid carpets; provide equipotential bonding; perform

the experiments on a conductive, earthed surface; use

shields and shielded cables. Do not use radiofrequency

transmitters (radio sets, mobile phones) in the direct vicinity

of the unit.

5 OPERATION

This section describes the start-up of the Cobra4 Sensor-Unit

“Pressure, 7 bar absolute” and the recording of measurement

data.

Please read this section carefully in order to avoid problems

or malfunctions.

5.1 Start-up

Connect the Cobra4 Sensor-Unit “Pressure, 7 bar absolute”

to one of the four possible measurement data recording de-

vices via the 15-pin connector. The Cobra4 Sensor-Unit is

immediately ready for use, since its power supply is ensured

via the measurement data recording devices. More informa-

tion concerning the control of the measurement data record-

ing process can be found in the operating instructions of the

measurement data recording devices Mobile-Link, USB-Link,

Junior-Link, and Wireless-Link.

When performing the measurements in combination with a

PC, please ensure the current version of the “measure” soft-

ware package and of the Cobra4 module are installed.

You can find a free software update on our homepage at:

www.phywe.com

 Service  Downloads  Software  measure

“measure” main program

“measure” Cobra4 module

A free software update is also possible via the “measure”

DVD.

5.2 Recording of pressure values

The absolute pressure is measured with a pressure sensor

that is integrated in the housing of the Sensor-Unit. To en-

sure easy connection to all kinds of experiment equipment, it

is equipped with a metal connector. Via this connector, the

current atmospheric pressure, for instance, can be measured

directly. If the pressure is to be measured in a closed experi-

ment set-up, the pressure sensor must be connected to the

equipment via a tube. Since pressure sensors should be po-

sitioned as closely to the measurement location as possible,

this connecting tube should be as short as possible. In addi-

tion, it should be able to safely withstand the pressures that

can be expected during the measurement. For safety rea-

sons, the tube connection should be secured with suitable

tube clamps.

The Sensor-Unit has two measuring ranges that can be dis-

tinguished in terms of the maximum pressure that can be

measured and also in terms of their resolution. The optimum

measuring range for a specific measurement can be selected

via the device-integrated menu if the Cobra4 Mobile-Link is

used. If the Sensor-Unit is used in combination with a Cobra4

USB-Link, Cobra4 Junior-Link, or Cobra4 Wireless-Link, the

measuring range must be selected via the “measure” soft-

ware.

6 TECHNICAL DATA (TYPICAL VALUES FOR

25°C)

Operating temperature range: 5 ... 40°C

Relative humidity: < 80%

Pressure:

Measuring range 1 0...2,000 hPa

Resolution 0.1 hPa

Measuring range 2 0...7,000 hPa

Resolution 0.3 hPa

Overall accuracy ± 2.5%

Overload capacity up to 10,000 hPa

Response time 1 ms (10% ... 90%)

Data transfer rate: 200 Hz

Dimensions:

Outer diameter of the metal connector 8 mm

Housing dimensions (mm) approx. 62 x 68 x 60

Weight 118 g

7 SCOPE OF SUPPLY

The scope of supply includes:

• Cobra4 Sensor-Unit “Pressure,

7 bar absolute” 12647-00

• Operating instructions

8 ACCESSORIES

8.1 Connecting tubes and tube clamps

In order to connect the pressure sensor to various types of

equipment via its metal connector, numerous different types

of tubes can be used. If the pressure in the system that is to

be measured is higher than the outer pressure, only pres-

sure-resistant tubes should be used for safety reasons. In

addition, the tube connections should be secured with tube

clamps.

Rubber tube, vacuum, inner diameter d = 6 mm 39286-00

Rubber tube, inner diameter d = 6 mm 39282-00

Silicon tube, inner diameter d = 7 mm 39296-00

PVC tube, inner diameter d = 7 mm 03985-03

Tube clamp for d = 12-20 mm, 1 piece 40995-00

Tube clamp for d = 8-12 mm, 1 piece 40996-01

Tube clamp for d = 10-17 mm 40998-00

Tube clamp d = 15-22 mm 40999-00

8.2 Holder for the Sensor-Unit

The Sensor-Unit and a connected measurement data record-

ing device can be easily and comfortably connected to a

support rod via its holder and a bosshead:

Holder for Cobra4 with a support rod 12680-00

9 WARRANTY

We provide a warranty of 24 months for units supplied by us

within the EU, and a warranty of 12 months outside the EU.

Any damage that is due to non-compliance with the operating

instructions, improper use, or natural wear is excluded from

the warranty.

The manufacturer can only be held liable for the function and

safety-relevant properties of the unit if the maintenance, ser-

vice, and modifications of the unit are performed solely by the

manufacturer or by an institution that is expressly authorised

by the manufacturer.

10 DISPOSAL

The packaging mainly consists of environmentally-friendly

materials that should be returned to local recycling stations.

Do not dispose of this product with normal

household waste. If this unit needs to be

disposed of, please return it to the address

that is stated below for proper disposal.

PHYWE Systeme GmbH & Co. KG

Customer Service

Robert-Bosch-Breite 10

D-37079 Göttingen

Germany

Tel. +49 (0) 551 604-274

Fax +49 (0) 551 604-246

PHYWE Cobra4 User manual

PHYWE Cobra4 User manual

Related papers

Other documents