Measuring instruments Measuring instruments


Menu languages:
  • Recording of:
    Flow temperature, Return temperature, Power, Heat quantity, Flow rate,
    Pressure, Differential pressure, System errors
  • Easy connection
  • Dot matrix display
  • Function control
  • Configurable control parameters
  • Unit °F and °C selectable! As well as BTU and gal/min.
rosenthal design

Calorimeter module for Grundfos Direct Sensors™
Article-no: 135 307 07 | Price bracket A

The WMZ-G1 is a measurement and display unit for solar thermal systems and conventional heating systems. It is possible to connect up to two Grundfos Direct Sensors™, which measure the temperature as well as one additional value - depending on the type: flow rate, relative or differential pressure.
If two Grundfos Direct Sensors™ are connected and at least one of them is a VFS type sensor, the heat quantity can be calculated. The WMZ-G1 also monitors the operating status of the system and displays deviations.

Inputs: 2 Grundfos Direct Sensors™ VFS, RPS oder DPS
Power supply: 115 V~
Power consumption: approx. 2 VA
Data interface: RESOL VBus®
Housing: plastic, PC ABS and PMMA
: 172 x 110 x 49 mm
Indication/Display: Graphic display as well as bi-coloured LED
Operation: 3 push buttons
Ingress protection: IP 20 / DIN 40050
Ambient temperature: 0 ... 40 °C / 32 ... 104 °F
Dimensions: graphic display as well as bicolored LED
Measuring range: -30 ... +150 °C / -22 ... +302 °F
Material: stainless steel
Maximum operation temperature:
Long-term: 100 °C
Short-term: 120 °C
: 110 mm (VFS)
: 3/4" ET (VFS), 1/2" ET (RPS)
: 12 mm (RPS)

Please note that RESOL – Elektronische Regelungen GmbH owns the sole copyright on objects, documents, graphics, pictures, audio and video documents, texts, etc. published and created by RESOL – Elektronische Regelungen GmbH. Copying, distribution to third parties, changing the contents or using these contents in electronic or printed publications is not permitted without the explicit approval of RESOL.

Customized and OEM versions are available on request. Please contact our sales team.
The cTUVus certification confirms that the controller is certified to UL 60730-1A and CSA E60730.1.
The cLCus certification confirms that the controller meets the demands of the UL 60730-2-9 and CSA - E60730-2-9-01 standards.
The cLCus certification confirms that the controller meets the demands of the UL 60730-1A and CSA E60730.1 standards.