Siemens B1105
| 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 |
| Features | autorange, data hold, bargraph, backlight |
| Website | [1] |
The Siemens B1105 is a 310000 counts 1000V CAT III/600 V CAT IV handheld digital multimeter with IR (RS232) connectivity.
It is an OEM version of the Gossen Metrawatt Metrahit 28S. The only differences seem to be the type, logo and color (grey-blue print on knob, grey-blue holster) and the voltage rating.
Photos
Using the device with sigrok
The device is supported by the driver gmc-mh-sm-rs232 (in development) and will be detected as a Metrahit 28S. Set the multimeter to use the communication adaptor RS232.
The device might be not detected by the driver if it is in a mode where it sends data rarely, either with a huge send interval or with a measurement function that delivers a very low data rate, e.g. temperature measurements with K type sensor. Then it should be set to a mode with higher data rate during the initialisation of the driver.
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 | To activate in AC, press yellow button twice. |
| 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) | " | Not tested yet due to lack of corresponding sensor. | ||
| °F | mq Temp., unit °C, mqflags - |
| |||
| 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.