© Caleffi_20130925_iSolar_WMZ.mon
us.ind
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• yield control
• increase in efficiency
• graphic display
• power failure protection
• user-friendly through easy mounting
• easy-to-mount housing in outstanding design
Technical data
Inputs: 2 inputs for Pt1000 temperature sensors, 1 V40
Measurement precision: ± 0.3 K [0.6 °Ra]
Range of measurement: -22 ... +302 °F [-30 ... +150 °C]
Power supply: 24 V
S1
1
2 3 4
5 6
9 10
12 13 14
Netz / Mains
T0,8A
IP 20
20
19
S2
V40
VBus
N
L
CALEFFI
NORTH AMERICA, Inc.
Milwaukee, WI 53208
Supply connection: type Y attachment
Power consumption: ca. 2 VA
Data interface: VBus
®
VBus
®
current supply: 35 mA
Housing: plastic, PC-ABS and PMMA
The iSolar WMZ is a universal calorimeter for thermal solar
systems and conventional heating systems. This calorimeter
especially takes into consideration that the density and the
specific heat capacity of the heat transfer fluid depend on the
temperature as well as on the mixing ratio of water/glycol.
The calorimeter iSolar WMZ calculates the heat amount
using these parameters, the measurement of flow and return
temperature by 2 precision temperature sensors and the
evaluation of the impulses of the flowmeter. A power failure
protection guarantees that the adjusted system parameters
and the calculated heat quantity are maintained in the case
of power loss. By means of push buttons, different channels
can be chosen and user levels can be changed. In the first
level, the temperature at the selected measuring points, the
heat gained, the actual power or the volumetric flow rate
of the system are indicated on the graphic display. A control
lamp is also installed for indication of sensor defects and
false sensors connections. A second level is used for dis-
playing system adjustment values and control values, which
can be analogously adapted to changes in the systems. The
power supply is effected via a power supply plug. Additional
modules can be connected to a bus connection. The VBus
®
connection enables the transmission of display values to a
corresponding controller, PC or datalogger in order to be
further processed or evaluated.
Mounting:
wall mounting, mounting into patch panels is possible
Display: Graphic display as well as bicolored LED
Operation: 3 push buttons in the front
Protection type: IP 20 / DIN EN 60529
Protection class: III
ambient temp.: 32 ... 104 °F [0 ... 40 °C]
Degree of pollution: 2
Dimensions: 6.8'' × 4.3'' × 1.9'' [172 x 110 x 46 mm]
