H82.0.03.6C-10 Operating Manual GMH 5155 page 3 of 22 _____________________________________________________ _____________________________________________________________________________ 1 General Note Read this document carefully and get used to the operation of the device before you use it. Keep this document within easy reach near the device for consulting in case of doubt.
_DANGER Product Specification 3.1 Scope of supply The scope of supply includes: GMH 5155 with 2 AAA batteries Operation manual Short form manual 3.2 Operation and maintenance advice 1. Battery operation: If ‘bAt’ is shown in the lower display the battery has been used up and needs to be replaced. However, the device will operate correctly for a certain time.
H82.0.03.6C-10 Operating Manual GMH 5155 page 7 of 22 _____________________________________________________ _____________________________________________________________________________ 5 Start Operation Connect sensors, turn device on via key. After segment test the device displays some configuration: if standard measurement is selected if fast measurement is selected if peak value detection is selected After that the device is ready for measuring.
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H82.0.03.6C-10 Operating Manual GMH 5155 page 8 of 22 _____________________________________________________ _____________________________________________________________________________ Menu Parameter Value Description Rate: Measuring rate Slow measuring rate (4 Hz filtered, low power consumption) FASt Fast measuring rate, filtered (1000 Hz) P.dEt Peak detection: fast measuring rate, unfiltered (1000 Hz) Averaging Filter 1 …...
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H82.0.03.6C-10 Operating Manual GMH 5155 page 9 of 22 _____________________________________________________ _____________________________________________________________________________ Menu Parameter Value Description Set Output: Universal output adjustments Interface and analog output off SEr: Serial interface activated dAC: Analog output activated 01, 11..91 Base address for serial interface communication...
H82.0.03.6C-10 Operating Manual GMH 5155 page 10 of 22 _____________________________________________________ _____________________________________________________________________________ Menu Parameter Value Description Set Logger: Settings for logger function Selection of logger function CYCL Cyclic: cyclic logger Stor Store: manual recording No logger activated 0:01 .. 60:00 Cycle time in [minutes: seconds] (for cyclic logger)
H82.0.03.6C-10 Operating Manual GMH 5155 page 11 of 22 _____________________________________________________ _____________________________________________________________________________ 7.2 Different kinds of measuring Three different kinds of pressure measuring are supported. Two of them (P.dEt and FASt) are working with high measuring frequency of more than 1000 measurings per second.
H82.0.03.6C-10 Operating Manual GMH 5155 page 12 of 22 _____________________________________________________ _____________________________________________________________________________ 7.5 Averaging function The averaging function concerns the display values (LCD and interface). It is completely independent from the averaging of the logger function FASt and P.dEt! The averaging integrates the measuring values during a selectable period of time and then calculates the average display value.
H82.0.03.6C-10 Operating Manual GMH 5155 page 13 of 22 _____________________________________________________ _____________________________________________________________________________ 7.7 CALC: Pitot measuring of Velocity and Flow (only for sensor 1) 7.7.1 Velocity measurement in air: “CALC SPEd” The air velocity is calculated by means of the pressure difference at a Prandtl pitot tube or comparable measuring setup.
H82.0.03.6C-10 Operating Manual GMH 5155 page 14 of 22 _____________________________________________________ _____________________________________________________________________________ 8 Data Logger The device supports two different logger functions: Manual recording by keypress “store“ “Func-Stor”: Additional input of measuring point (L-Id) is needed “Func-CYCL”: Automatic recording at intervals of set cycle time...
H82.0.03.6C-10 Operating Manual GMH 5155 page 15 of 22 _____________________________________________________ _____________________________________________________________________________ b) Read manual recordings: Saved data sets can be viewed both with PC-software GSOFT3050 and directly on the device display. Do not change the pressure sensor if manual recording is selected and values are already stored, because otherwise invalid data may be read-out.
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H82.0.03.6C-10 Operating Manual GMH 5155 page 16 of 22 _____________________________________________________ _____________________________________________________________________________ At measuring kind "rAtE-Slo” a power saving function is selectable: “Lo.Po”. If activated a measurement is only done if it is also logged (i.e. no additional measurements between the saved values).
H82.0.03.6C-10 Operating Manual GMH 5155 page 17 of 22 _____________________________________________________ _____________________________________________________________________________ 9 Universal Output The output can be used either as serial interface (for USB 5100 interface converter) or as analog output (0-1V). If the output is not needed, it is strongly recommended to deactivate it (Out oFF) to lower power consumption.
H82.0.03.6C-10 Operating Manual GMH 5155 page 18 of 22 _____________________________________________________ _____________________________________________________________________________ 9.2 Analog output An analog voltage 0-1V can be tapped at the universal output connector (mode: “Out dAC”). The analog output can be easily scaled with DAC.0 and DAC.1.
H82.0.03.6C-10 Operating Manual GMH 5155 page 19 of 22 _____________________________________________________ _____________________________________________________________________________ 12 Alarm (“AL.”) There are 3 possible settings: off (AL.oFF), on with buzzer (AL.on), on without buzzer (AL.no.So). Alarm is given in the following cases (if alarm active, AL.on or AL.no.So): Lower alarm boundary (AL.
H82.0.03.6C-10 Operating Manual GMH 5155 page 20 of 22 _____________________________________________________ _____________________________________________________________________________ 16 Error and System Messages Display Description What to do? No sensor connected Switch off device and connect sensor Connected sensor or device defective If 2nd sensor available, check if device is ok. Return defective device/sensor to manufacturer for repair Err.9...
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