Voltcraft ME-42
Revision as of 14:11, 24 March 2014 by Matthias Heidbrink (talk | contribs)
| Status | in progress |
|---|---|
| Source code | serial-dmm |
| Counts | 4000 |
| IEC 61010-1 | CAT II (750 V AC/1000 V DC) |
| Connectivity | RS-232 (DB9) |
| Measurements | voltage, current, resistance, diode, continuity |
| Features | autorange, hold, bargraph |
| Website | conrad.de |
Please note: This page is a work in progress, more to come.
The Voltcraft ME-42 is a 4000 counts, CAT II (750/1000V) handheld digital multimeter with RS232 connectivity. It is an OEM version of the Metex ME-42. The device was sold by Conrad Elektronik as article 120130 starting from 1999 and is not available any more.
Hardware
Multimeter:
- TODO
- Fuses: 800mA/250V 5x20mm and 15A/250V 6x30mm (superfast, ceramic fuses)
- Battery: 9V NEDA 1604 or 6F22
RS232 cable:
RS-232 cable with DB9 (M) plug.
Photos
Multimeter:
Protocol
See Multimeter_ICs#Metex_14-byte_ASCII for the DMM IC protocol.
It seems that the device does not work with some RS232-USB converters.
Model family
It seems that several versions and OEM models exist.
| Metex | Conrad | PeakTech | Radio Shack | RMS | Frequency | Transistor | Remarks |
|---|---|---|---|---|---|---|---|
| Metex ME-11 | - | ? | RadioShack 22-805 | ? | ? | ? |
|
| Metex ME-21 | - | ? | ? | ? | ? | ? | |
| Metex ME-22 | Voltcraft ME-22 | ? | ? | ● | ? | ? | |
| Metex ME-31 | - | PeakTech 3410 | ? | ? | ? | ? | |
| Metex ME-32 | Voltcraft ME-32 | ? | ? | ? | ? | ? | |
| Metex ME-42 | Voltcraft ME-42 | ? | ? | - | - | - |
Resources
Measurement functions and ranges
| Measurement function | Range | Resolution | Accuracy | sigrok result | Remarks |
|---|---|---|---|---|---|
| V= | 400.0 mV | 100 μV | ±(0.5% + 3) | mq V, unit V, mqflags DC | " |
| 4.000 V | 1 mV | " | |||
| 40.00 V | 10 mV | " | |||
| 400.0 V | 100 mV | " | |||
| 1000 V | 1 V | " | |||
| V≈ | 400.0 mV | 100 μV | ±(1.0% + 5) | mq V, unit V, mqflags AC | 40 Hz - 100 Hz |
| 4.000 V | 1 mV | " | 40 Hz - 400 Hz | ||
| 40.00 V | 10 mV | " | " | ||
| 400.0 V | 100 mV | " | " | ||
| 750 V | 1 V | " | " | ||
| A= | 4.000 mA | 1 µA | ±(0.8% + 3) | mq Curr., unit A, mqflags DC | |
| 400.0 mA | 100 µA | ±(1,2% + 3) | " | ||
| 20.00 A | 10 mA | ±(2,0% + 5) | " | ||
| A≈ | 4.000 mA | 10 µA | ±(1,0% + 5) | mq Curr., unit A, mqflags AC | |
| 300.0 mA | 100 µA | ±(1,5% + 5) | " | ||
| 20.00 A | 10 mA | ±(3.0% + 5) | " | ||
| Ω | 400.0 Ω | 100 mΩ | mq Res., unit Ω, mqflags - | ||
| 4.000 kΩ | 1 Ω | " | |||
| 40.00 kΩ | 10 Ω | " | |||
| 400.0 kΩ | 100 Ω | " | |||
| 4.000 MΩ | 1 kΩ | " | |||
| 40.00 MΩ | 10 kΩ | " | |||
| Diode | 2.000 V– | 1 mV | mq V, unit V, mqflags DC,DIODE | Max. 1,5 mA | |
| Cont. | 50 3.000 V– | 1 mV | mq Res., unit Ω, mqflags Cont. | ||
| Data Hold | mqflags += HOLD |
The column "sigrok result" contains in short form what the driver generates for the resp. data type.