Difference between revisions of "Gossen Metrawatt Metrahit 25S"

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(Created page with "{{Infobox multimeter | image = 180px | name = Gossen Metrawatt Metrahit 25S | status = in progress | source_code...")
 
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{{Infobox multimeter
{{Infobox multimeter
| image          = [[File:Siemens B1105 small.png|180px]]
| <!-- image          = -- [[File:Siemens B1105 small.png|180px]] -->
| name            = Gossen Metrawatt Metrahit 25S
| name            = Gossen Metrawatt Metrahit 25S
| status          = in progress
| status          = in progress
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}}
}}


The '''[[Gossen Metrawatt]] Metrahit 25S''' is a 31000 counts 1000V CAT III/600 V CAT IV handheld digital multimeter with IR (RS232) connectivity.
The '''[[Gossen Metrawatt]] Metrahit 25S''' is a 4.5 digit, 31000 counts 1000V CAT III/600 V CAT IV handheld digital multimeter with IR (RS232) connectivity.


== Hardware ==
== Hardware ==
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| rowspan="5" | V=
| rowspan="5" | V=
| 300 mV
| 300 mV
| 1 μV
| 10 μV
| ±(0,02% + 0,010% + 5)  
| ±(0,02% + 0,010% + 5)  
| mq V, unit V, mqflags DC
| mq V, unit V, mqflags DC
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|-
|-
| 3 V
| 3 V
| 10 μV
| 100 μV
| rowspan="4" | ±(0,02% + 0,005% + 5)  
| rowspan="4" | ±(0,02% + 0,005% + 5)  
| "
| "
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|-
|-
| 30 V
| 30 V
| 100 μV
| 1 mV
| "
| "
|  
|  
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|-
|-
| 300 V
| 300 V
| 1 mV
| 10 mV
| "
| "
|  
|  
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|-
|-
| 1000 V
| 1000 V
| 10 mV
| 100 mV
| "
| "
|  
|  
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| rowspan="5" | V≈
| rowspan="5" | V≈
| 300 mV
| 300 mV
| 10 µV
| 100 µV
| ±(0,5% + 30) (> 500 Digit))
| ±(0,5% + 30) (> 500 Digit))
| mq V, unit V, mqflags AC,RMS
| mq V, unit V, mqflags AC,RMS
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|-
|-
| 30 V
| 30 V
| 100 μV
| 1 mV
| "
| "
|  
|  
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|-
|-
| 300 V
| 300 V
| 1 mV
| 10 mV
| "
| "
|  
|  
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|-
|-
| 1000 V
| 1000 V
| 10 mV
| 100 mV
| "
| "
|  
|  
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| rowspan="6" | A=
| rowspan="6" | A=
| 300.00 µA
| 300.00 µA
| 1 nA
| 10 nA
| 0,05% + 0,02% + 5
| 0,05% + 0,02% + 5
| mq Curr., unit A, mqflags DC
| mq Curr., unit A, mqflags DC
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|-
|-
| 3.0000 mA
| 3.0000 mA
| 10 nA
| 100 nA
| 0,05% + 0,01% + 5
| 0,05% + 0,01% + 5
| "
| "
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|-
|-
| 30.000 mA
| 30.000 mA
| 100 nA
| 1 mA
| 0,05% + 0,01% + 5
| 0,05% + 0,01% + 5
| "
| "
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|-
|-
| 300.00 mA
| 300.00 mA
| 1 µA
| 10 µA
| 0,1% + 0,01% + 5
| 0,1% + 0,01% + 5
| "
| "

Revision as of 17:54, 14 February 2014

Gossen Metrawatt Metrahit 25S
Status in progress
Source code gmc_mh_1x_2x
Counts 31000
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
Website [1]

The Gossen Metrawatt Metrahit 25S is a 4.5 digit, 31000 counts 1000V CAT III/600 V CAT IV handheld digital multimeter with IR (RS232) connectivity.

Hardware

  • Power supply:
    • Battery: 2x 1,5 V IEC R 6, IEC LR 6 or corresponding NiCd rechargeable batteries
  • Fuse:
    • Current 300 mA: FF (UR) 1,6 A/1000 V AC/DC (10 kA) 6,3 mm x 32 mm
    • Current 3A/10A: FF (UR) 10 A/1000 V AC/DC (30 kA) 10 mm x 38 mm

Photos

Using the device with sigrok

The device is supported in Send Mode using a RS232 interface by the driver gmc-mh-1x-2x-rs232. Set the multimeter to use the communication adaptor RS232.

The multimeter is also supported in bidirectional mode using a BD232 or SI232-II interface by the driver gmc-mh-2x-bd232. Set the multimeter to use the communication adaptor BD232.

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

Measurement function Range Resolution Accuracy sigrok result Remarks
V= 300 mV 10 μV ±(0,02% + 0,010% + 5) mq V, unit V, mqflags DC
3 V 100 μV ±(0,02% + 0,005% + 5) "
30 V 1 mV "
300 V 10 mV "
1000 V 100 mV "
V≈ 300 mV 100 µV ±(0,5% + 30) (> 500 Digit)) mq V, unit V, mqflags AC,RMS
3 V 100 μV ±(0,2% + 30) "
30 V 1 mV "
300 V 10 mV "
1000 V 100 mV "
V db≈ -48 - 63 dB 0,01 dB ± 0,1 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 ± 0,1 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 10 nA 0,05% + 0,02% + 5 mq Curr., unit A, mqflags DC
3.0000 mA 100 nA 0,05% + 0,01% + 5 "
30.000 mA 1 mA 0,05% + 0,01% + 5 "
300.00 mA 10 µA 0,1% + 0,01% + 5 "
3.0000 A 100 µA 0,2% + 0,05% + 5 "
10.000 A 1 mA 0,2% + 0,05% + 5 "
A≃  300.00 µA 10 nA 0,5% + 30 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 0,7% + 30 "
10.000 A 1 mA 0,5% + 30 "
Ω 300.00 Ω 1 mΩ 0,05% + 0.01% + 5 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 0,1% + 0.02% + 5 "
30.000 MΩ 100 Ω 1% + 0.2% + 5 "
Ohm/Cont. 300 Ω 100 mΩ 1% + 3% mq Res., unit Ω, mqflags -
Diode/Cont. 300 mV 100 µV 0.2% + 3 mq V, unit V, mqflags DC,DIODE
Diode 3 V 100 µV 0.2% + 3 mq V, unit V, mqflags DC,DIODE
Cap. F 3.000 nF 1 pF 1.0% + 0.2 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 °F, mqflags - Details and ranges like °C.


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. Using the stop watch delivers only voltage data and sometimes seems to bring the device into a mode where it even sends invalid data packets.
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 Accuracy row was simplified, see manual for exact specs. If the value contains three values, the middle value is % or range.

The column "sigrok result" contains in short form what the driver generates for the resp. data type.

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