CALEFFI 750704 Handbuch - Seite 2

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Technical specifications

Flow probe length
Return probe length
Probe type
Working temperature range limits
Temperature difference limits
Measurement sensitivity
Flow meter
Dimensions/Connection
Body
Type of hydraulic connection
Nominal pressure
Max. temperature of the medium
Mounting
Pulse output
Permanent flow rate
Minimum flow rate
Maximum flow rate
Electric supply
Microprocessor calculator unit
Metrological specifications
Accuracy class
Centralised transmission
Ambient temperature range limits
Ambient classification
Energy unit of measurement
Electric supply
Protection class
Pulse inputs
N.B. The flow meter must be installed between two rectilinear sections, measuring 10 times the pipe diameter upstream and 3 times the pipe diameter downstream.
The CONTECA
heat meter is supplied with accessories for installation, probes positioning and subsequent lead sealing.
®
TABLE 1 - Flow rate limit - Connections from 1/2" to 1 1/2":
2 x Y-pockets (the flow pocket is fitted with a strainer mesh)
Code
Connections
750704
750705
750706
750707
750708
* vertical installation
Dimensions
Code
DN
A
B
Temperature probes
Q
Q /
s
p
p
100*/250
C
D
E
F
G
m
m
°C
10–90 (HEATING) - 2–25 (COOLING)
K
°C
1/2"–1 1/2"
Male thread ISO 228
PN
bar
PN 16
°C
class OA-OC in accordance with EN1434-2
Q
l/h
p
Q
l/h
i
Q
l/h
s
in compliance with EN 1434-1 - MID 2014/32/EU
according to M-Bus/ MODBUS RTU protocol on RS-485
°C
kWh
24 V (+10 % / -5 %) (ac) - 1 W - 50 Hz
in accordance with DIN 40050: IP 54
class IB in accordance with EN 1434-2
TABLE 2 - Flow rate limit - Connections from DN 50 to DN 200:
2 x 1/2" weld sleeves with brass pocket to 1 lead sealing kit
Code
Connections
750709
750710
750711
750712
750713
DN 125
750714
DN 150
7507 15
DN 200
* vertical installation
PN
Code
DN
2
1,9
1,9
NTC
3–80 (HEATING) - 3–20 (COOLING)
≤
0,05
DN 50–DN 100
Brass
Flanged EN 1092-1
PN 16
90
preferably horizontal
see table 1 and 2
see table 1 and 2
see table 1 and 2
lithium battery, life 12 years
class 2
5–45
MID 2014/32/EU E1-M1
8-digit display
Q
1000
100
1500
150
2500
250
A
B
C
DN 125–DN 200
Steel P235GH
PN 25
Q /
p
p
s
100*/250
100
100
100
150
100
250
100
D
PN