Gossen Metrawatt T-Com KMM2002
Revision as of 21:45, 16 July 2014 by Matthias Heidbrink (talk | contribs)
| Status | in progress |
|---|---|
| Source code | gmc_mh_1x_2x |
| Counts | 3100 (31000) |
| IEC 61010-1 | CAT II 1000 V |
| Connectivity | Infrared (RS232) |
| Measurements | voltage, current, resistance, capacitance, temperature, diode, continuity |
| Features | autorange, data hold, bargraph, backlight |
| Website | [1] |
The Gossen Metrawatt T-Com KMM2002 is a 3100 counts handheld digital multimeter with IR (RS232) connectivity and insulation measurement (100 V). It seems to be an OEM version of the Metrahit 16T especially made for T-Com (Deutsche Telekom). Additional features seems to be a backlight and a 30 nF capacity range.
The resolution is one digit higher on the data interface.
Hardware
- Battery: 9 V IEC 6 LR 61
- Fuse: None! (not required, no internal amps ranges)
- TODO.
Photos
Measurement functions and ranges
The specifications of the KMM2002 seem not to be available to the public. The following is taken from the specs of the Metrahit 16T which seems to be almost identical and the Metrahit 16I .
| Measurement function | Range | Resolution | Deviation | sigrok result | Remarks |
|---|---|---|---|---|---|
| V= | 30 mV | 10 μV | ±(0,5% + 3) | mq V, unit V, mqflags DC | Input impendance >10 GΩ; not covered by autorange, use manual range |
| 300 mV | 100 μV | ±(0,5% + 3) | " | " | |
| 3 V | 1 mV | ±(0,25% + 1) | " | ||
| 30 V | 10 mV | " | |||
| 300 V | 100 mV | " | |||
| 1000 V | 1 V | ±(0,35% + 1) | " | ||
| V≈ | 3 V | 100 μV | ±(1.0% + 3) (> 10 Digit) | mq V, unit V, mqflags AC,RMS | |
| 30 V | 100 μV | " | |||
| 300 V | 1 mV | " | |||
| 1000 V | 10 mV | " | |||
| V≃ | 3 V | 100 μV | ±(1.0% + 3) (> 10 Digit) | mq V, unit V, mqflags AC,DC,RMS | |
| 30 V | 100 μV | " | |||
| 300 V | 1 mV | " | |||
| 1000 V | 10 mV | " | |||
| A≈ (clamp only) | 30 A | 10 mA | ±(2,5% + 3) (>10 Digit) | mq Curr., unit A, mqflags AC,DC,RMS | Current clamp with 100 mV/A required, e.g. GMC WZ12B |
| 100 A | 100 mA | " | |||
| Ω | 30.00 Ω | 10 mΩ | ±(0,5% + 3) | mq Res., unit Ω, mqflags - | |
| 300.0 Ω | 100 mΩ | " | |||
| 3.000 kΩ | 1 Ω | ±(0,4% + 1) | " | ||
| 30.00 kΩ | 10 Ω | " | |||
| 300.0 kΩ | 100 Ω | " | |||
| 3.000 MΩ | 1 kΩ | ±(0,6% + 1) | " | ||
| 30.00 MΩ | 10 kΩ | ±(2,0% + 1) | " | ||
| Ω Iso 100V | 310 MΩ | 100 Ω - 100 kΩ | ±(3% + 2) | mq Res., unit Ω, mqflags - | Altogether 4 ranges with different resolution |
| Diode/Cont. | 3.0000 V– | 1 mV | ±(0,25% + 1) | mq V, unit V, mqflags DC,DIODE | Diode and cont. are identical on this device, just without beeper for diode. |
| Cap. F | 30.00 nF | 10 pF | ±(1,0% + 3) | mq Cap., unit F, mqflags - | |
| 300.0 nF | 100 pF | " | |||
| 3.000 µF | 1 nF | " | |||
| Hz= | 300.0 Hz | 0.01 Hz | ±(0.1% + 3) | mq Freq., unit Hz | The protocol does not allow to differ AC and DC. |
| 3.000 kHz | 0.1 Hz | " | |||
| 30.00 kHz | 1 Hz | " | |||
| 100.00 kHz | 10 Hz | " | |||
| Hz≈ | 300.0 Hz | 0.01 Hz | ±(0.1% + 3) | mq Freq., unit Hz | The protocol does not allow to differ AC and DC. |
| 3.000 kHz | 0.1 Hz | " | |||
| 30.00 kHz | 1 Hz | " | |||
| 100.00 kHz | 10 Hz | " | |||
| °C | Pt100 –200.0 - +200.0 °C | 0.1 °C | 2 Kelvin + 5 | mq Temp., unit °C, mqflags - | °F temperature ranges accordingly, but not available via serial interface. |
| Pt100 +200.0 - +800.0 °C | ±(1.0% + 5) | " | |||
| Pt1000 –100.0 - +200.0 °C | 2 Kelvin + 5 | " | |||
| Pt1000 +200.0 - +800.0 °C | ±(1.0% + 5) | " | |||
| Event count | Seems not to be present on data output. | ||||
| Data Hold | mqflags += HOLD | Disabled while IR interface is active on Matthias' 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.