Difference between revisions of "Gossen Metrawatt Metrahit 27I"

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| name            = Gossen Metrawatt 27I
| name            = Gossen Metrawatt 27I
| status          = planned
| status          = planned
| source_code_dir = gmc_mh_1x_2x
| source_code_dir = <!-- gmc-mh-1x-2x -->
| counts          = 31000
| counts          = 31000
| categories      = CAT II 600 V
| categories      = CAT II 600 V
| connectivity    = Infrared (RS232)
| connectivity    = Infrared (RS232/USB)
| measurements    = voltage, resistance, temperature, diode, continuity
| measurements    = voltage, resistance, temperature, diode, continuity
| features        = autorange, data hold, backlight, insulation measurement, data logging
| features        = autorange, data hold, backlight, insulation measurement, data logging
Line 14: Line 14:
'''Please note: This page is a work in progress and still partly incorrect.'''
'''Please note: This page is a work in progress and still partly incorrect.'''


The '''[[Gossen Metrawatt]] Metrahit 27I''' is a 3100/31000 counts 600 V CAT II handheld digital multimeter with IR (RS232) connectivity. It supports milliohm and insulation (megaohm) measurements and has data logging capabilities.
The '''[[Gossen Metrawatt]] Metrahit 27I''' is a 3100/31000 counts 600 V CAT II handheld digital multimeter with bidirectional IR (RS232/USB) connectivity. It supports milliohm and insulation (megaohm) measurements and has data logging capabilities.
 
There are two versions of this device, an older one with yellow rotary switch and a newer one with red rotary switch. They also have different power supply connectors.


== Hardware ==
== Hardware ==
Line 20: Line 22:
* '''Power supply''':
* '''Power supply''':
** Battery: 3x ''1,2 V NiMH'' rechargeable batteries
** Battery: 3x ''1,2 V NiMH'' rechargeable batteries
** External power supply ''NA HIT 27'' (Art. Z218J) by Gossen Metrawatt, 5V, 600 mA
** External power supply ''NA HIT 27'' (Art. Z218J) by Gossen Metrawatt, 5V, 600 mA (newer version)
* '''Fuse''':  
* '''Fuse''':  
** FF (UR) 1,6 A/1000 V AC/DC (10 kA) 6,3 mm x 32 mm
** FF (UR) 1,6 A/1000 V AC/DC (10 kA) 6,3 mm x 32 mm
Line 35: Line 37:
</gallery>
</gallery>
-->
-->
== Communication Protocol ==
The complete description is available on request from the manufacturer.


<!--
<!--
== Using the device with sigrok ==
== Using the device with sigrok ==
The device is supported in ''Send Mode'' using a [[Gossen_Metrawatt#Metrahit_RS232 | RS232 interface]] by the driver gmc-mh-1x-2x-rs232 and is detected as a ''Metrahit 28S''. Set the multimeter to use the communication adaptor ''RS232''.
The device is supported using a [[Gossen_Metrawatt#Metrahit_RS232 | RS232 interface]] by the driver gmc-mh-27x. The communication adaptor ''USB-Hit'' should work, too, but is untested.
 
The device has got a device address that can be set to values from 0 to 15 in the setup. Using the device address 15 is recommended if only a single device is used, it sets a special mode with simplified addressing. The device address 0 sets a special mode where the multimeter does not send replies. It cannot be used with sigrok.  


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.
If several devices of the Metrahit 27x family are used on the same RS232 interface using cascaded ''RS232'' interfaces, they need to be set to different device addresses from 1 to 15. In opposite to what the manual says, it seems that the device address 15 can be used, too. Using several devices on the same RS232 interface is an untested feature.


Please contact [[User:Matthias Heidbrink | Matthias']] if you can test one of the untested features.
-->
-->


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| 3 V
| 3 V
| 100 μV
| 100 μV
| ±(0,1% + 10)  
| ±(0.1% + 10)  
| mq V, unit V, mqflags DC
| mq V, unit V, mqflags DC
|  
|  
Line 66: Line 74:
| 30 V
| 30 V
| 1 mV
| 1 mV
| rowspan="3" | ±(0,1% + 5)  
| rowspan="3" | ±(0.1% + 5)  
| "
| "
|  
|  
Line 86: Line 94:
| 3 V
| 3 V
| 100 μV
| 100 μV
| rowspan="4" | ±(0,2% + 10)  
| rowspan="4" | ±(0.2% + 10)  
| mq V, unit V, mqflags AC
| mq V, unit V, mqflags AC
|  
|  
Line 112: Line 120:
| 3 mΩ
| 3 mΩ
| 0.001 mΩ
| 0.001 mΩ
| 1% + 10
| ±(1% + 10)
| mq Res., unit Ω, mqflags -
| mq Res., unit Ω, mqflags -
| 4-wire Kelvin measurement
| 4-wire Kelvin measurement
Line 119: Line 127:
| 30 mΩ
| 30 mΩ
| 0.001 mΩ
| 0.001 mΩ
| rowspan=2 | 0.5% + 10
| rowspan=2 | ±(0.5% + 10)
| "
| "
| "
| "
Line 133: Line 141:
| 30 mΩ
| 30 mΩ
| 0.01 mΩ
| 0.01 mΩ
| rowspan="4" | 0.25% + 10
| rowspan="4" | ±(0.25% + 10)
| "
| "
| "
| "
Line 159: Line 167:
| 300.00 Ω
| 300.00 Ω
| 1 mΩ
| 1 mΩ
| 0.1% + 10
| ±(0.1% + 10)
| "
| "
| ZERO with yellow button
| ZERO with yellow button
Line 166: Line 174:
| 3.0000 kΩ
| 3.0000 kΩ
| 10 mΩ
| 10 mΩ
| rowspan="4" | 0,1% + 5
| rowspan="4" | ±(0.1% + 5)
| "
| "
| "
| "
Line 191: Line 199:
| 30.000 MΩ
| 30.000 MΩ
| 100 Ω
| 100 Ω
| 1.5% + 10
| ±(1.5% + 10)
| "
| "
|  
|  


|-
|-
| rowspan="3" | MΩ
| rowspan="3" | MΩ (Insulation)
| 30 MΩ
| 30 MΩ
| 10 kΩ
| 10 kΩ
| rowspan="2" | 2% + 10
| rowspan="2" | ±(2% + 10)
| "
| "
| Test voltage selectable 50/100/250/500 V
| Insulation measurement, test voltage selectable 50/100/250/500 V


|-
|-
Line 212: Line 220:
| 3 GΩ
| 3 GΩ
| 1 MΩ
| 1 MΩ
| 2% + 10
| ±(3% + 10)
| "
| "
| "
| "
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| 310 Ω
| 310 Ω
| 100 mΩ
| 100 mΩ
| 1% + 5
| ±(1% + 5)
| mq Res., unit Ω, mqflags -
| mq Res., unit Ω, mqflags -
| Signal < about 10 Ω
| Signal < about 10 Ω
Line 228: Line 236:
| 3 V
| 3 V
| 100 µV
| 100 µV
| 1% + 5
| ±(1% + 5)
| mq V, unit V, mqflags DC,DIODE
| mq V, unit V, mqflags DC,DIODE
|  
|  
Line 256: Line 264:
|-
|-
| Pt100/Pt1000<br> +100.0 - 850.0 °C
| Pt100/Pt1000<br> +100.0 - 850.0 °C
| rowspan="2" | ±(0,5% + 5)
| rowspan="2" | ±(0.5K + 5)
| "
| "
|
|


|-
|-
| NI 100/NI1000<br>-60-+180 °C
| Ni 100/Ni1000<br>-60-+180 °C
| "
| "
| Not tested yet due to lack of corresponding sensor.
| Not tested yet due to lack of corresponding sensor.
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|   
|   
|  
|  
| style="background: #ff0000; "| mqflags += HOLD
| mqflags += HOLD
| Disabled while IR interface is active on [[User:Matthias Heidbrink | Matthias']] test device.
|  
   
   
|-
|-
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|   
|   
|  
|  
| style="background: #ff0000; "| mqflags += MIN
| mqflags += MIN
| Influences only display, via IR flag is set, but actual current value is delivered.
|  
   
   
|-
|-
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|   
|   
|  
|  
| style="background: #ff0000; "| mqflags += 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 ''Accuracy'' row was simplified, see manual for exact specs.


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


This device has an uncommon input impendance of 2.1 MΩ in AC/DC voltage measurement modes.


[[Category:Device]]
[[Category:Device]]
[[Category:Multimeter]]
[[Category:Multimeter]]
[[Category:Planned]]
[[Category:Planned]]

Latest revision as of 19:52, 20 December 2016

Gossen Metrawatt 27I
Status planned
Counts 31000
IEC 61010-1 CAT II 600 V
Connectivity Infrared (RS232/USB)
Measurements voltage, resistance, temperature, diode, continuity
Features autorange, data hold, backlight, insulation measurement, data logging
Website [1]

Please note: This page is a work in progress and still partly incorrect.

The Gossen Metrawatt Metrahit 27I is a 3100/31000 counts 600 V CAT II handheld digital multimeter with bidirectional IR (RS232/USB) connectivity. It supports milliohm and insulation (megaohm) measurements and has data logging capabilities.

There are two versions of this device, an older one with yellow rotary switch and a newer one with red rotary switch. They also have different power supply connectors.

Hardware

  • Power supply:
    • Battery: 3x 1,2 V NiMH rechargeable batteries
    • External power supply NA HIT 27 (Art. Z218J) by Gossen Metrawatt, 5V, 600 mA (newer version)
  • Fuse:
    • FF (UR) 1,6 A/1000 V AC/DC (10 kA) 6,3 mm x 32 mm

Photos

Communication Protocol

The complete description is available on request from the manufacturer.


Measurement functions and ranges

Measurement function Range Resolution Accuracy sigrok result Remarks
V= 3 V 100 μV ±(0.1% + 10) mq V, unit V, mqflags DC
30 V 1 mV ±(0.1% + 5) "
300 V 10 mV "
600 V 100 mV "
V≈ 3 V 100 μV ±(0.2% + 10) mq V, unit V, mqflags AC
30 V 1 mV "
300 V 10 mV "
600 V 100 mV "
mΩ@1A 3 mΩ 0.001 mΩ ±(1% + 10) mq Res., unit Ω, mqflags - 4-wire Kelvin measurement
30 mΩ 0.001 mΩ ±(0.5% + 10) " "
300 mΩ 0.01 mΩ " "
mΩ@200 mA 30 mΩ 0.01 mΩ ±(0.25% + 10) " "
300 mΩ 0.01 mΩ " "
3 Ω 0.1 mΩ " "
30 Ω 1 mΩ " "
Ω 300.00 Ω 1 mΩ ±(0.1% + 10) " ZERO with yellow button
3.0000 kΩ 10 mΩ ±(0.1% + 5) " "
30.000 kΩ 100 mΩ "
300.00 kΩ 1 Ω "
3.0000 MΩ 10 Ω "
30.000 MΩ 100 Ω ±(1.5% + 10) "
MΩ (Insulation) 30 MΩ 10 kΩ ±(2% + 10) " Insulation measurement, test voltage selectable 50/100/250/500 V
300 MΩ 100 kΩ " "
3 GΩ 1 MΩ ±(3% + 10) " "
Cont. 310 Ω 100 mΩ ±(1% + 5) mq Res., unit Ω, mqflags - Signal < about 10 Ω
Diode 3 V 100 µV ±(1% + 5) mq V, unit V, mqflags DC,DIODE
Hz 300.00 Hz 0.01 Hz ±(0.05% + 5) mq Freq., unit Hz, mqflags AC
3.000 kHz 0.1 Hz "
°C Pt100/Pt1000
–200.0 - +100.0 °C 		0.1 °C ±(1 K + 5) mq Temp., unit °C, mqflags -
Pt100/Pt1000
+100.0 - 850.0 °C 		±(0.5K + 5) "
Ni 100/Ni1000
-60-+180 °C 		" Not tested yet due to lack of corresponding sensor.
°F " " " mq Temp., unit °F, mqflags - Details and ranges like °C.
Data Hold mqflags += HOLD
MIN mqflags += MIN
MAX mqflags += MAX

The Accuracy row was simplified, see manual for exact specs.

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

This device has an uncommon input impendance of 2.1 MΩ in AC/DC voltage measurement modes.

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