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Summary of Contents for Hameg HM8112-3
- Page 1 99 Washington Street Melrose, MA 02176 Fax 781-665-0780 TestEquipmentDepot.com 6 ½ - D I G I T P R E C I S I O N - M U L T I M E T E R H M 8 1 1 2 - 3 Handbuch / Manual Deutsch / English...
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Page 2: English
Whenever different maximum In the vicinity of strong magnetic or/and electric fields even a careful measuring limits are optional HAMEG will select the most stringent ones. As regards set-up may not be sufficient to guard against the intrusion of undesired signals. -
Page 3: Table Of Contents
Control-Elements Concept of the HM8112-3 Reference Integrated AD converters Moving average Measurement of alternating values Introduction to the operation of the HM8112-3 Factory settings Control elements and displays Buttons for the various measurement functions Continuity test Max / Min values... - Page 4 H M 8 1 1 2 - 3 6 ½ - D i g i t P r e c i s i o n - M u l t i m e t e r H M 8 1 1 2 - 3 6½-digit LCD-display (1.200.000 points) True rms measurements of AC+DC or AC 2-wire- / 4-wire measurements...
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Page 5: Digit Precision-Multimeter Hm8112-3
Crest factor: 7:1 (max. 5 x range) Overload protection: Fuse FF 1 A 250 V Included in delivery: Resistance specifications Multimeter HM8112-3, line cord, manual, HZ15 measuring cables Ranges: 100Ω, 1kΩ, 10kΩ, 100kΩ, 1MΩ, 10MΩ Accessories optional: Integration time: 0.1 sec 1 to 60 sec HZ887: Temperataure sensor (PT100;... -
Page 6: Important Hints
The line voltage of the instrument must correspond to the If the feet are not used (picture 2) the instrument can be line voltage used. combined with many other HAMEG instruments. – Opening of the instrument is only allowed to qualified... -
Page 7: Proper Operating Conditions
The proceeding of repairs during the warranty period is subject to our terms of warranty which are available on our web-site (http://www.hameg.com). Even after expiry of the warranty period please do not hesitate to contact our HAMEG customer Premises Permanently installed Mains outlets for service for repairs and spare parts. -
Page 8: Control-Elements
C o n t r o l e l e m e n t s 3 4 5 7 8 9 10 11 12 13 14 15 16 17 19 20 18 21 22 23 MIN – min. value during a test series Control elements MENU –... -
Page 9: Concept Of The Hm8112-3
The integrated AD converter has to be connected to a reference. The characteristics of this reference determine the long term RMS rectifier stability of the instrument. The reference of HM8112-3 is therefore The AC voltage is measured by a high precision RMS rectifier a high precision reference device. -
Page 10: Control Elements And Displays
Also the reference voltage source will remain LOCAL energized, so any drift after turn-on will be eliminated, also By sending a command via interface to the HM8112-3 the its long term drift will be substantially improved. instrument is set to the remote mode. Remote control is To switch-off the instrument completely, the line switch on switched off by pressing button LOCAL. - Page 11 V 250V rms The input impedance of the HM8112-3 is 10 GΩ in 100 mV range, 10 MΩ in the other ranges. FREQ./PERIOD Switching between frequency and period measurement by repeatedly pressing this button.
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Page 12: Continuity Test
Often the data sheet is lost but the sensor is Max / Min values still there. In HM8112-3 a value of 100 mΩ is stored by default. But some PT sensors have an integrated series resistance (e.g. -
Page 13: Menu Structure
3: Sensor display will roll over and continue with the last menu item. Here the temperature sensor used is selected. After switch on of the HM8112-3 and selection of the menu item ENTER “3:Sensor“, if a measurement function other than temperature Use this button only in the logger menu „6:Logger.“... - Page 14 M e n u s t r u c t u r e Overview of menu structure – part 1 ¬ Special function in the Call of the menu by: MENU Selection of menu with: Logger-Menu ¬ ENTER MENU see next page Opening menu with: ¬...
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Page 15: Menu Structure And Function
The ambient tem- reference for the measurement used with the thermocouples. perature should be about 23° C. If several thermocouples will be attached to the HM8112-3 via a scanner, the use of the ice bath would be necessary for each 4:Info thermocouple. -
Page 16: Measurement Inputs
HM8112-3 is calibrated. Calibration may Lo Limit Lower limit. only be done with adequate precision reference sources. For If the measured value is smaller than the Lo this purpose the password can be orderd at HAMEG GmbH Limit Limit Limit Limit Limit value an acoustic warning sounds and “Lo... -
Page 17: Serial Interface
The maximum voltage between LO and case Serial Interface RS-232 (ground) may not exceed 250 V The RS-232 interface is on the rear panel of the HM8112-3 (9-pin D-sub socket). The bidirectional interface of HM8112-3 can receive data (commands) from an external device (PC) or A/SOURCE (4mm safety socket) send data (measurement values and parameters). -
Page 18: Data Communication
L i s t i n g o f c o m m a n d s Data communication Layout of commands A command consists of 5 ASCII characters: 1. Character: 0 2. Character: Command category (0, 1, 2 or E) 3. - Page 19 L i s t i n g o f c o m m a n d s Test Equipment Depot - 800.517.8431 - 99 Washington Street Melrose, MA 02176 Subject to change without notice FAX 781.665.0780 - TestEquipmentDepot.com...
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