Difference between revisions of "Gossen Metrawatt Metrahit 28S"
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| mq V, unit V, mqflags AC,RMS | | mq V, unit V, mqflags AC,RMS | ||
| Actually 5 ranges. | | Actually the 5 AC ranges, see there for accuracy. | ||
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| Line 165: | Line 165: | ||
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| mq V, unit V, mqflags AC,RMS | | mq V, unit V, mqflags AC,RMS | ||
| Actually 5 ranges. To activate, press yellow button in dB mode, then do second measurement. Cannot be distinguished from non-rel measurement remotely. | | Actually the 5 AC ranges, see there for accuracy. To activate, press yellow button in dB mode, then do second measurement. Cannot be distinguished from non-rel measurement remotely. | ||
|- | |- | ||
| Line 378: | Line 378: | ||
| 300.00 Hz | | 300.00 Hz | ||
| 0.001 Hz | | 0.001 Hz | ||
| rowspan="3" | ±(0. | | rowspan="3" | ±(0.05% + 1) | ||
| mq Freq., unit Hz, mqflags AC,DC | | mq Freq., unit Hz, mqflags AC,DC | ||
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| Line 441: | Line 441: | ||
| Stop Watch | | Stop Watch | ||
| | | | ||
| | | 100 ns | ||
| | | | ||
| style="background: #ff0000; "| (Time data) | | style="background: #ff0000; "| (Time data) | ||
| To activate, select a 3V- | | Max. 100 Min. To activate, select a 3V-1000V≃ range manually, press yellow button, press AUTO for start/stop, DATA for reset. Delivers only invalid data ("Overflow") via IR on [[User:Matthias Heidbrink | Matthias']] test device. | ||
|- | |- | ||
Revision as of 09:08, 3 November 2013
| Status | in progress |
|---|---|
| Counts | 310000 |
| IEC 61010-1 | CAT III 1000 V, CAT IV 600 V |
| Connectivity | Infrared (RS232) |
| Measurements | voltage, current, resistance, capacitance, temperature, diode, continuity, insulation |
| Features | autorange, data hold, bargraph, backlight |
| Website | [1] |
The Gossen Metrawatt Metrahit 28S is a 310000 counts handheld digital multimeter with IR (RS232) connectivity.
Hardware
- Fuse:
- FF (UR) 1,6 A/1000 V AC/DC (10 kA) for current 300 mA
- FF (UR) 10 A/1000 V AC/DC (30 kA) for current 3A, 10A
- TODO.
Photos
Measurement functions and ranges
Note: Work in progress, currently simply wrong!
| Measurement function | Range | Resolution | Accuracy | sigrok result | Remarks |
|---|---|---|---|---|---|
| V= | 300 mV | 1 μV | ±(0,02% + 0,010% + 5) | mq V, unit V, mqflags DC | |
| 3 V | 10 μV | ±(0,02% + 0,005% + 5) | " | ||
| 30 V | 100 μV | " | |||
| 300 V | 1 mV | " | |||
| 1000 V | 10 mV | " | |||
| V≈ | 300 mV | 10 µV | ±(0,5% + 30) (> 500 Digit)) | mq V, unit V, mqflags AC,RMS | |
| 3 V | 100 μV | ±(0,2% + 30) | " | ||
| 30 V | 100 μV | " | |||
| 300 V | 1 mV | " | |||
| 1000 V | 10 mV | " | |||
| V≃ | 300 mV | 10 μV | ±(0,5% + 30) (> 500 Digit)) | mq V, unit V, mqflags AC,DC,RMS | |
| 3 V | 100 μV | ±(0,2% + 30) | " | ||
| 30 V | 100 μV | " | |||
| 300 V | 1 mV | " | |||
| 1000 V | 10 mV | " | |||
| V db≈ | -48 - 63 dB | 0,01 dB | mq V, unit V, mqflags AC,RMS | Actually the 5 AC ranges, see there for accuracy. | |
| V db≈ rel | -48 - 63 dB | 0,01 dB | mq V, unit V, mqflags AC,RMS | Actually the 5 AC ranges, see there for accuracy. To activate, press yellow button in dB mode, then do second measurement. Cannot be distinguished from non-rel measurement remotely. | |
| A= | 300.00 µA | 1 nA | mq Curr., unit A, mqflags DC | ||
| 3.0000 mA | 10 nA | " | |||
| 30.000 mA | 100 nA | " | |||
| 300.00 mA | 1 µA | " | |||
| 3.0000 A | 100 µA | " | |||
| 10.000 A | 1 mA | " | |||
| A≃ | 300.00 µA | 10 nA | mq Curr., unit A, mqflags AC,DC,RMS | ||
| 3.0000 mA | 100 nA | " | |||
| 30.000 mA | 1 µA | " | |||
| 300.00 mA | 10 µA | " | |||
| 3.0000 A | 100 µA | " | |||
| 10.000 A | 1 mA | " | |||
| Ω | 300.00 Ω | 1 mΩ | mq Res., unit Ω, mqflags - | ||
| 3.0000 kΩ | 10 mΩ | " | |||
| 30.000 kΩ | 100 mΩ | " | |||
| 300.00 kΩ | 1 Ω | " | |||
| 3.0000 MΩ | 10 Ω | " | |||
| 30.000 MΩ | 100 Ω | " | |||
| Ohm/Cont. | 300 Ω | 100 mΩ | mq Res., unit Ω, mqflags - | ||
| Diode/Cont. | 300 mV | 100 µV | mq V, unit V, mqflags DC,DIODE | ||
| Diode | 3 V | 100 µV | mq V, unit V, mqflags DC,DIODE | ||
| Cap. F | 3.000 nF | 1 pF | mq Cap., unit F, mqflags - | ||
| 30.00 nF | 10 pF | " | |||
| 300.0 nF | 100 pF | " | |||
| 3.000 µF | 1 nF | " | |||
| 30.00 µF | 10 nF | " | |||
| 300.0 µF | 100 nF | ±(5.0% + 6) | " | ||
| 3.000 mF | 1 µF | " | |||
| 30.00 mF | 1 µF | " | |||
| Hz≃ | 300.00 Hz | 0.001 Hz | ±(0.05% + 1) | mq Freq., unit Hz, mqflags AC,DC | |
| 3.0000 kHz | 0.01 Hz | " | |||
| 300.000 kHz | 1 Hz | " | |||
| °C | Pt100/Pt1000 –200.0 - +100.0 °C |
0.1 °C | ±(0,5 K + 3) | mq Temp., unit °C, mqflags - | |
| Pt100/Pt1000 +100.0 - 850.0 °C |
±(0,2% + 3) | mq Temp., unit °C, mqflags - | |||
| K NiCr-Ni -270-+1372,0 °C | ±(0,7% + 3) | " | |||
| J Fe-CuNi -210 - +1200.0 °C | ±(0,8% + 3) | " | |||
| °F | mq Temp., unit °C, mqflags - | Not tested yet.
| |||
| Event count | mq V, unit V, mqflags AC,RMS,REL | Counts events >= 2500 digits that last >=2s with a break >=2s. To activate, switch to voltage ACDC, press yellow button twice. Press up to 4 times to cycle parameters, press long to stop. See manual. Not useful remotely because the current measurement value is sent, not the counter. | |||
| Stop Watch | 100 ns | (Time data) | Max. 100 Min. To activate, select a 3V-1000V≃ range manually, press yellow button, press AUTO for start/stop, DATA for reset. Delivers only invalid data ("Overflow") via IR on Matthias' test device. | ||
| Data Hold | mqflags += HOLD | Disabled while IR interface is active on Matthias' test device. | |||
| MIN | mqflags += MIN | Influences only display, via IR flag is set, but actual current value is delivered. | |||
| MAX | mqflags += MAX | Influences only display, via IR flag is set, but actual current value is delivered. |
The column "sigrok result" contains in short form what the driver generates for the resp. data type.