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P29 Instruction Manual 

 

16 

8.3 Warning 

Use this menu item to set the warning values. The first menu item that appears here is Select 
Warning Message (1 or 2). The settings for this warning message should then be changed. 
Use the “^” and “>” keys to select the number of the warning and press Enter to move to that 
warning's menu. 
The following sub-menu items are available: 

 Value 

 Hysteresis 

 TV 

 Warning 

signal 

 Mode 

8.3.1 Value 

This item adjusts the pressure value at which the particular warning should be activated. The 
pressure range defined by the scale can be used as the setting range. Select the pressure 
unit set for the display as the unit. If the volumetric flow, mass flow or flow rate (root-
extracted display) is displayed, select the Pa unit. 

8.3.2 Hysteresis 

This item can be used to select the hysteresis for the particular warning. The action 
described in 7.3.1 applies to the entry unit. The hysteresis is always positive. 

8.3.3 TV delay time 

The entry value of the warning is derived from the unfiltered pressure value. With this 
parameter, you can now specify how long the pressure value can be exceeded or not met 
until the warning is activated. The adjustment is done in ms. 25 ms is specified as the 
minimum value. 

8.3.4 Warning signal 

A warning signal sounds once every second when a threshold value is exceeded. With this 
parameter, you can set the duration of this warning signal for each warning. The maximum 
value here is 1000 ms (continuous tone). If both warnings are active, the longer warning 
signal of the two sounds. The warning signal may sound different depending on the 
activation level. A warning signal duration of 0 ms switches the signal off. 

8.3.5 Mode 

This item can be used to adjust whether the warning is to be activated when the pressure 
exceeds or falls below the warning pressure threshold. This affects the processing of the 
hysteresis value. 

Summary of Contents for P29

Page 1: ...ansducer for Flammable Gases halstrup walcher GmbH Stegener Stra e 10 D 79199 Kirchzarten Phone 49 0 76 61 39 63 0 Fax 49 0 76 61 39 63 99 E Mail info halstrup walcher com Internet www halstrup walche...

Page 2: ...tenance repair 8 3 3 Shipping 8 4 Instrument description 9 4 1 Features 9 4 2 User interfaces 10 4 3 Internal ports and keys 10 4 4 Front view 12 5 Zero point calibration cycle 12 6 Overpressure prote...

Page 3: ...4 Settings 17 8 4 1 Language 17 8 4 2 Output 17 8 4 3 Filter 17 8 4 4 Warning signal 17 8 4 5 Resolution 17 8 4 6 Zero point calibration 18 8 4 7 CS creep suppression 18 8 4 8 Read factory settings 18...

Page 4: ...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 I...

Page 5: ...ument 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 instru...

Page 6: ...als 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 2 5 Symbols T...

Page 7: ...al power supply Before connecting the instrument to the gas lines both the pressure lines should be flooded with gas otherwise the instrument itself must be flooded with gas for a longer period of tim...

Page 8: ...itched off pressure system for at least 2 minutes with air P 100 1000mbar to remove the gas Install and start up the new instrument as described in Section 3 1 3 3 Shipping Instruments operated with f...

Page 9: ...rement 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 Th...

Page 10: ...Up Max display Increase value or scroll up Right Min display Move the arrow or scroll down In measurement mode the keys perform the following functions The Enter key starts a zero point calibration k...

Page 11: ...meterisation Reset Output signal Port description Description OUT_I Current output OUT_GND Earth OUT_U Voltage output Power supply o 24V DC Left contact Ground Central contact 24V DC RS232 interface f...

Page 12: ...alibration the instrument automatically calculates this shift and takes it into account during the zero point calibration The zero point calibration takes place in two steps which are shown in the top...

Page 13: ...al If the P29 includes a display you can use the menu to adjust various settings Press the Menu key to bring up the menu In Menu mode the parent menu item always appears in the top display line The mi...

Page 14: ...ault settings for the pressure scale Top Pressure at which the output has its maximum value e g 5V 10V or 20 mA Bottom Pressure at which the output has its minimum value e g 5V 0V 0mA or 4mA Because t...

Page 15: ...aled pressure 0 is always used as the lower scale value on the mass flow display root extracted measured value The maximum pressure is the larger of the two scale values which is used as a basic calcu...

Page 16: ...he action described in 7 3 1 applies to the entry unit The hysteresis is always positive 8 3 3 TV delay time The entry value of the warning is derived from the unfiltered pressure value With this para...

Page 17: ...you can select the output and output range You can choose from the following options 4 20 mA 0 20 mA 5V 5V 0V 10V 8 4 3 Filter The measured pressure values can be smoothened by a filter before they re...

Page 18: ...e value the display is set to zero Creep suppression only works with volumetric flow mass flow and flow rate root extracted measurement values 8 4 8 Read factory settings The factory settings are esta...

Page 19: ...rmity Declaration of conformity available upon request Electrical data Rated input approx 6 VA Supply voltage 24VDC 10 Output signal 0 10 V RL 2 k or 5 5 V RL 2 k or 0 20 mA RL 500 or4 20 mA RL 500 In...

Page 20: ...Corrective Action Instrument does not work nothing on display No power Check the terminal connections and supply voltage No serial communication No cable connection Secure the connection Instrument i...

Page 21: ...P29 Instruction Manual 21 11 Dimension drawing with LCD without LCD...

Page 22: ...Pa mbar mmH2O mmHg psi inH2O inHg m s m h kg s kg min kg h m s mph f s f min km h Scaling Pressure Top xxxx x Bottom xxxx x Unit Pa hPa kPa mbar mmH2O mmHg psi inH2O inHg Vol Flow Value xxxxxxx x Unit...

Page 23: ...x x TV xxxxx ms Warning signal xxxxx ms Mode increasing decreasing Settings Language English German Italian French Output 4 20 mA 0 20 mA 5 5V 0 10 V Filter xxxxx ms Warning signal on off on off Resol...

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