Gossen Metrawatt Metrahit 18S

Gossen Metrawatt Metrahit 18S

Status	in progress
Counts	31000
IEC 61010-1	CAT III 1000 V, CAT IV 600 V
Connectivity	Infrared (RS232)
Measurements	voltage, current, resistance, capacitance, temperature, diode, continuity, insulation
Features	autorange, data hold, bargraph
Website	[1]

The Gossen Metrawatt Metrahit 18S is a 31000 counts handheld digital multimeter with IR (RS232) connectivity.

Hardware

• TODO.

Measurement functions and ranges

Measurement function	Range	Resolution	Accuracy	sigrok result	Remarks
V=	300 mV	10 μV	±(0,05% + 3)	mq V, unit V, mqflags DC
	3 V	100 μV	±(0,05% + 3)	"
	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	±(0,5% + 30) (> 300 Digit)	"
	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	±(0,5% + 30) (> 300 Digit)	"
	30 V	100 μV		"
	300 V	1 mV		"
	1000 V	10 mV		"
A=	300.00 µA	100 nA		mq Curr., unit A, mqflags DC
	3.0000 mA	1 µA		"
	30.000 mA	1 µA		"
	100.00 mA	10 µA		"
	1.0000 A	100 µA		"
	10.000 A	1 mA		"
A≃	300.00 µA	100 nA		mq Curr., unit A, mqflags AC,DC,RMS
	3.0000 mA	1 µA		"
	30.000 mA	1 µA		"
	100.00 mA	10 µA		"
	1.0000 A	100 µA		"
	10.000 A	1 mA		"
Ω	300.00 Ω	10 mΩ		mq Res., unit Ω, mqflags -
	3.0000 kΩ	100 mΩ		"
	30.000 kΩ	1 Ω		"
	300.00 kΩ	10 Ω		"
	3.0000 MΩ	100 Ω		"
	30.000 MΩ	1 kΩ		"
Diode/Cont.	3.0000 V–	1 mV		mq V, unit V, mqflags DC,DIODE	Diode and cont. are identical on this device, just without beeper for 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		"
	10.00 mF	10 µF		"
Hz≃	300.00 Hz	0.01 Hz	±(0.1% + 3)	mq Freq., unit Hz, mqflags AC,DC
	3.0000 kHz	0.1 Hz		"
	30.000 kHz	1 Hz		"
	100.000 kHz	10 Hz		"
°C	Pt100 –200.0 - +100.0 °C	0.1 °C	2 Kelvin + 5	mq Temp., unit °C, mqflags -
	Pt100 +100.0 - +800.0 °C		±(1.0% + 5)	"
	Pt1000 –100.0 - +100.0 °C		2 Kelvin + 5	"
	Pt1000 +100.0 - +800.0 °C		±(1.0% + 5)	"
Event count
Stop Watch					To activate, select 3V-1000V range manually, press yellow button, press AUTO for start/stop, DATA for reset. Delivers invalid data ("Overflow") via IR on  Matthias' device.
Data Hold				mqflags += HOLD	Disabled while IR interface is active.
MIN				mqflags += MIN	Flag is set, but influences only display, via IR the current value is delivered.
MAX				mqflags += MAX	Flag is set, but influences only display, via IR the current value is delivered.

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