Gossen Metrawatt

Gossen Metrawatt is a German manufacturer of high-end test and measurement equipment, including multimeters.

This article tries to give an overview of the multimeters with interfaces for data exchange, OEM models and communication.

Multimeters

Metrahit 1x series

• Metrahit 15S
• Metrahit 16S
• Metrahit 16I Isolation measurement 500/1000 V
• Metrahit 18S

The Metrahit 1x series supports sending data via IR.

Metrahit 2x/30 Series

• Metrahit 24S
• Metrahit 26S
• Metrahit 26C (Multimeter + calibrator)
• METRAHit 27EX (Milliohm meter for explosive atmospheres)
• METRAHit H+E (with insulation tester; seems to be a METRAHit 27I in different colors)
• METRAHit 27I (with Milliohm and Megaohm, insulation tester)
• METRAHit 27M (with Milliohm)
• Metrahit 28S = Siemens B1105
• Metrahit 29S = Siemens B1106 Energy multimeter
• [[Gossen-Metrawatt METRAHIT 30M]Metrahit 30M]] 200.000 count laboratory multimeter

The Metrahit 2x series supports bidirectional data exchange via IR.

Metrahit Starline Series

• Metrahit X-Tra (M240A), 12.000 Count

Metrahit E Series

60.000 Count

• EBASE
• ESPECIAL
• ETECH
• EXTRA
• ENERGY (Energy multimeter)

METRAHit S Series

• METRAHIT ISO
• METRAHIT ISO AERO
• METRAHIT T-COM
• METRAHIT T-COM PLUS
• METRAHIT Outdoor (12000 Count, IP65; seems to be a more rugged, different-colored flavour of the X-Tra)
• SECULIFE HIT (seems to be a white version of the X-Tra)

METRAHit Ultra

• 310.000 Count
• IR and (METRAHit ULTRA BT only) Bluetooth

Communication Protocols

All Gossen Metrawatt multimeters having data communication support support unidirectional or bi-directional infrared communication through the case using proprietary communication adaptors. The METRAHit Ultra also supports Bluetooth.

Metrahit 1x Series

• The Metrahit 1x series offers unidirectional communication using proprietary protocols.

Metrahit 2x Series

The Metrahit 2x series supports unidirectional communication like the 1x series and bidirection communication using proprietary protocols.

USB X-Tra

Newer Metrahit devices use a proprietary communication protocol that is very close to SCPI.

Bluetooth

Bluetooth 2.1 + EDR, Class 2