MADDALENA microCLIMA U - 8.1 Calculator Technical Data; 8.2 Temperature Sensors Technical Data; 9 Additional Interfaces; 9.1 Optical Interface

2015_03_03 5
Maximum flow qs
m³/h
1.2
3.0
5.0
7.0
7.0
12.0
12.0
Pressure drop ∆p at qp
mbar
40
215
110
210
210
200
200
Nominal pressure PN
bar
16
Maximum pressure MAP
bar
16
Low flow threshold
l/h
6
6
12
14
14
30
30
Installation length
mm
110
110
130
130
150
150
260
Connection thread
inch
G3/4B
G3/4B
G1B
G1B
G1 1/4B
G1 1/4B
G1 1/4B
Temperature range
°C
15 – 90
Mounting position
horizontal; vertical
Point of installation
standard
return flow (standard version)
forward flow (optional version)
Calculator
Ambient temperature
°C
5 - 55; see ‘Influencing_factors_battery_lifetime’
Temperature range
°C
0 - 105
Temperature difference
K
3 – 100
Measuring cycle temperature
sec
4/60; dynamic
Measuring cycle flow
sec
2
Protection class
IP54
Power supply
3 V lithium battery
Battery lifetime, estimated
years
Standard: 10 years; 6 years + 1 with pulse output: see
“Influencing_factors_battery_lifetime”.
Data storage
E
2
PROM; daily
Display
8 digits + special characters
Interfaces
standard
infrared
optional
M-Bus galvanically isolated; M-Bus galvanically isolated + 2 pulse
inputs; wireless M-Bus; wireless M-Bus + 2 pulse inputs; pulse output
Temperature Sensors
Sensor type
Platinum precision resistor Pt1000
Connection type
2-wire technique
Diameter
mm
5.0; 5.2; 6
Length of cables
m
1.5; 3
Type of installation
asymmetric; symmetric
9 Additional Interfaces
9.1 Optical (infrared) interface
For the communication with the optical interface an optocoupler and the Device Monitor is necessary. The
optocoupler and the‚ Device Monitor’ software are available as accessory equipment.
Baud rate: 2400 baud
The optical infrared interface is activated by pressing the push-button. If within 60 seconds neither a valid telegram
is received nor the push-button pressed again, the interface is deactivated. The number of read-outs via the optical
interface is limited to 300 times per day.
9.2 M-Bus (optional)
The M-Bus is a galvanically isolated interface for the transmission of meter data (absolute values).