H74.0.14.6C-05 Oxygen meter for oxygen in gases with integrated temperature and pressure measuring As of Version 1.2 Operating Manual GMH 3692 Please keep for future reference! WEEE-Reg.-Nr. DE 93889386 GHM Messtechnik GmbH • Standort Greisinger Hans-Sachs-Str. 26 • D-93128 Regenstauf +49 (0) 9402 / 9383-0 +49 (0) 9402 / 9383-33 info@greisinger.
H74.0.14.6C-05 Operating Manual GMH 3692 page 2 of 12 Contents 1 2 3 4 5 6 7 GENERAL NOTE ...................................................................................................................................................... 2 DESIGNATED USE ................................................................................................................................................... 3 SAFETY ..........................................................................................
H74.0.14.6C-05 Operating Manual GMH 3692 page 3 of 12 2 Designated Use The GMH 3692 is measuring oxygen in air and gas mixtures either as partial pressure or as concentration in %vol. For the measuring an external sensor of the type GOO-... or GGO... has to be connected to the MINI-DINsocket. Due to the properties of the sensor, it has to be calibrated regularly (e.g. at fresh air = 20.95%) to get precise values.
H74.0.14.6C-05 Operating Manual GMH 3692 page 4 of 12 4 Product Description 4.1 Scope of supply The scope of supply includes: GMH 3692 with 9V-battery Operating manual The necessary oxygen sensor is chosen separately due to application. 4.2 Operation and maintenance advice 1. Battery operation If and ‘bAt’ are 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.
H74.0.14.6C-05 4.4 Operating Manual GMH 3692 page 5 of 12 Anschlüsse 1. Output: Operation as interface for t he connection of galvanically isolated adapters (accessories: GRS 3100, USB 3100) Attention: The mode of operation has to be configured (p.r.t Chapter 5) and influences the power consumption. 2. 3. 4.5 Sensor connection MiniDIN Power supply: d.c.connector (internal pin Ø 1.9 mm) for external 10.
H74.0.14.6C-05 4.7 Operating Manual GMH 3692 page 6 of 12 Pop-up clip Handling: • Pull at label “open” in order to swing open the pop-up clip. • Pull at label “open” again to swing open the pop-up clip further. Pop-up clip closed Pop-up clip at position 90° Pop-up clip at position 180° Function: • The device with a closed pop-up clip can be plainly laid onto a table or attached to a belt, etc. • The device with pop-up clip at position 90° can be set up on a table, etc.
H74.0.14.6C-05 Operating Manual GMH 3692 Menu Parameter Value Description key Menu key key or Set Configuration: General configurations SET (ONF [H 2 LCD.2 U N,T T [AL.P [. INT A VTO HLD P.OFF P 02 P 02 T P P T hPa Oxygen partial pressure display in hPa mmHg Oxygen partial pressure display in mmHg (ORR 0FFS hPa * Second. display always absolute pressure Second. display alternates between temperature and abs.
H74.0.14.6C-05 6 Operating Manual GMH 3692 page 8 of 12 Oxygen Measuring in Gases- Please Note The GMH 369x is designed for measuring the oxygen partial pressure or the oxygen concentration (%vol, calculated from partial pressure and ambient pressure) in gases. Please keep in mind: The sensor hast o calibrated regularily, e.g.
H74.0.14.6C-05 Operating Manual GMH 3692 page 9 of 12 7 Calibration of the Sensor In order to compensate for ageing of the sensor, the sensor has to be calibrated at regular intervals. The device is equipped with an easy-to-use calibration functions. We recommend to calibrate the sensor at least all 7 days, or to get maximum precision, before each measuring series. 7.1 One Point Calibration ('(AL 1-PT') The calibration adjusts the sensor to the oxygen content of the atmosphere (20.95%).
H74.0.14.6C-05 7.4 Operating Manual GMH 3692 page 10 of 12 Calibration Interval ([.INT) You can enter the interval after which the device reminds you to recalibrate in the configuration. The interval times should be chosen according to the application and the stability of the sensor. “CAL” flashes on the display as soon as the interval has expired. 8 Inspection of the accuracy / Adjustment Services The instrument can be sent to the manufacturer for adjustment and function test.
H74.0.14.6C-05 Operating Manual GMH 3692 page 11 of 12 11 Error and System Messages Display Meaning Remedy low battery voltage, device will continue to work for a short time If mains operation: wrong voltage replace battery low battery voltage If mains operation: wrong voltage No display or weird display Device does not react on keys SENS ERRO ERR.1 ERR.2 ERR.
H74.0.14.6C-05 Operating Manual GMH 3692 page 12 of 12 12 Specification Measuring ranges Oxygen concentration Oxygen partial pressure Sensor temperature Absolute pressure Accuracy Oxygen concentration (instrument without Oxygen partial pressure sensor, at 25°C, 1000 Sensor temperature hPa abs) 0.0 ... 100.0 % O2 (Vol) electrochemical sensors GGO / GOO 0 ... 1100 hPa O2 “ “ “ -5.0 ... + 50.0 °C NTC 10k (integr. in GGO / GOO cable) 10 ... 1200 hPa abs. integrated pressure sensor ±0.
H36.0.13.
H36.0.13.6C-07 Measuring: 1. Penetrate the rubber foam sticker until the needle hits a hollow space of the package. Attention: You must take care not to draw foodstuffs in, because otherwise the needle can be blocked and the sensor can be contaminated. 2. Compress the hand pump completely. A valve prevents air from flowing into the package due to the compression of the hand pump. 3. After releasing it, the pump draws the measuring gas out of the packing for ~30 seconds.
