halstrup-walcher P26 Instructions Manual
Instruction Manual for P26
Differential Pressure
Transducer
halstrup - walcher GmbH
Stegener Strasse 10
D-79199 Kirchzarten
GERMANY
Phone:+49 (7661) 39 630
Fax: +49 (7661) 396 399
E-Mail: info@halstrup-walcher.com
Internet: www.halstrup-walcher.com
Document 7100.004084C Version 4.2 02/2015
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Table of Contents:
1 Purpose of instruction manual ............................................................................................. 4
2 Safety precautions ............................................................................................................... 5
2.1 Appropriate use .............................................................................................................. 5
2.2 Shipping, assembly, electrical connections and startup .................................................. 5
2.3 Troubleshooting, maintenance, repairs, disposal ............................................................ 5
2.4 Symbols ......................................................................................................................... 6
3 Instrument description ......................................................................................................... 7
3.1 Features ......................................................................................................................... 7
3.2 User interfaces ............................................................................................................... 8
3.3 Internal ports and keys ................................................................................................... 9
3.4 Front view .................................................................................................................... 12
4 Zero-point calibration cycle ................................................................................................ 13
5 Overpressure protection .................................................................................................... 13
6 Display (optional) ............................................................................................................... 13
7 Menu (optional) ................................................................................................................. 13
7.1 Display ......................................................................................................................... 14
7.2 Scale ............................................................................................................................ 14
7.2.1 Pressure ................................................................................................................. 14
7.2.1.1 Top ............................................................................................................... 14
7.2.1.2 Bottom .......................................................................................................... 14
7.2.1.3 Unit .............................................................................................................. 14
7.2.2 Volumetric flow ....................................................................................................... 15
7.2.2.1 Value ............................................................................................................ 15
7.2.2.2 Unit .............................................................................................................. 15
7.2.3 Mass flow ................................................................................................................ 15
7.2.3.1 Value ............................................................................................................ 15
7.2.3.2 Unit .............................................................................................................. 15
7.2.4 Flow rate ................................................................................................................. 15
7.2.4.1 Value ............................................................................................................ 15
7.2.4.2 Unit .............................................................................................................. 16
7.3 Warning........................................................................................................................ 16
7.3.1 Value ...................................................................................................................... 16
7.3.2 Hysteresis ............................................................................................................... 16
7.3.3 TV delay time .......................................................................................................... 16
7.3.4 TN hold time ........................................................................................................... 16
7.3.5 Warning signal ........................................................................................................ 16
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7.3.6 Filter ........................................................................................................................ 17
7.3.7 Mode ....................................................................................................................... 17
7.4 Settings ........................................................................................................................ 17
7.4.1 Language ................................................................................................................ 17
7.4.2 Output ..................................................................................................................... 17
7.4.3 Filter ........................................................................................................................ 17
7.4.4 Warning signal ........................................................................................................ 17
7.4.5 Resolution ............................................................................................................... 18
7.4.6 Zero-point calibration .............................................................................................. 18
7.4.7 CS (creep suppression) .......................................................................................... 18
7.4.8 Read factory settings .............................................................................................. 18
7.4.9 Code? ..................................................................................................................... 18
8 Serial interface (optional) ................................................................................................... 18
8.1 Settings ........................................................................................................................ 18
8.2 USB ............................................................................................................................. 18
8.3 List of commands ......................................................................................................... 19
9 Technical data ................................................................................................................... 21
10 Troubleshooting ............................................................................................................... 21
11 Dimension drawing .......................................................................................................... 22
12 Menu tree ........................................................................................................................ 23
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1 Purpose of instruction manual
This instruction manual describes the features of the P26 and provides guidelines for its use.
Improper use of this instrument or failure to follow these instructions may cause injury or
equipment damage. Every person who uses this device must therefore read the manual and
understand the possible risks. The instruction manual, and in particular the safety precautions
contained therein, must be followed carefully.
Contact the manufacturer if you do not understand any part of this instruction manual.
Handle this manual with care:
It must be readily available throughout the lifecycle of the instrument.
It must be provided to any individuals who assume responsibility for operating the
instrument at a later date.
It must include any supplementary materials provided by the manufacturer.
The manufacturer reserves the right to continue developing this instrument model without
documenting such development in each individual case. The manufacturer will be happy to
determine whether this manual is up-to-date.
Conformity
This device is state of the art. It complies with the legal requirements of EC directives.
This is shown by the CE mark.
© 2012,2015
The manufacturer owns the copyright to this instruction manual. It contains technical data,
instructions and drawings detailing the device’s features and how to use it. It must not be copied
either wholly or in part or made available to third parties.
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2 Safety precautions
2.1 Appropriate use
The P26 is used to measure pressure, volumetric flow, mass flow and flow rate.
Always observe the operating requirements—particularly the permissible supply voltage—
indicated on the rating plate and in the “Technical data” section of this manual.
The instrument may only be handled as indicated in this manual. Modifications to the
instrument are prohibited. The manufacturer is not liable for damages caused by improper use
or failure to follow these instructions. Violations of this type render all warranty claims null and
void.
2.2 Shipping, assembly, electrical connections and startup
Do not close the pressure inlets during shipping. Changes in barometric pressure may
damage devices with low measuring ranges.
Assembly and the electrical connections should only be handled by professionals. They should
be given proper training and be authorised by the operator of the facility.
The instrument may only be operated by appropriately trained individuals who have been
authorized by the operator of the facility.
Do not carry out a function test with compressed or breathable air. This would damage
instruments with low measuring ranges.
Measurement errors may occur if the instrument is not kept protected from sunlight.
Specific safety precautions are given in individual sections of this manual.
2.3 Troubleshooting, maintenance, repairs, disposal
The individual responsible for the electrical connections must be notified if the instrument is
damaged or if errors occur that cannot be corrected as indicated in Section 10.
This individual must take the instrument out of service until the error has been corrected and
ensure that it cannot be used unintentionally.
Always unplug the power cord before opening the instrument!
This instrument requires no maintenance.
Only the manufacturer may perform repairs that require the housing to be opened.
The electronic components of the instrument contain environmentally hazardous materials and
materials that can be reused. The instrument must therefore be sent to a recycling plant when
you no longer wish to use it. The environment codes of your particular country must be
complied with.
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2.4 Symbols
The symbols given below are used throughout this manual to indicate instances when
improper operation could result in the following hazards:
WARNING! This warns you of a potential hazard that could lead to bodily injury up to
and including death if the corresponding instructions are not followed.
CAUTION: This warns you of a potential hazard that could lead to significant property
damage if corresponding instructions are not followed.
INFORMATION: This indicates that the corresponding information is important for
operating the instrument properly.
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3 Instrument description
3.1 Features
The P26 is controlled by a microprocessor and can perform the following tasks:
Measurement of pressure and vacuum
Measurement of differential pressure
Measurement of volumetric flow, mass flow and flow rate
Display of a measured value
Monitoring of a variety of threshold parameters
-
+
Actual pressure value
Calculation:
Volumetric flow
Mass flow
Flow rate
µC
Pressure measurement
Valves
Pressure
Vacuum
Display
Serial
interface
Relay
Keyboard
Analogue output signal
Fig. 1: Basic circuit diagram
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3.2 User interfaces
There are four keys:
Key
Meaning (Measurement Mode)
Meaning (Menu)
Menu
Start Menu
Go back a menu level
Enter
Start zero point calibration
Confirm
Up
Max. display
Increase value or scroll up
Right
Min. display
Move the cursor or scroll down
In measurement mode, the keys perform the following functions:
The Enter key starts a zero point calibration
“^“ key shows the maximum (to reset: press Enter while the maximum is being displayed)
“>“ key shows the minimum (to reset: press Enter while the minimum is being displayed)
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