SSU20-3.5-HR-MPI Compact ultrasonic energy meters

Externally threaded, compact energy meters with built-in ultrasonic flow meter, intended for heating or cooling.We offer many different options, see the product sheet for more information.
Specifications for SSU20-3.5-HR-MPI
Nominal diameter DN20
Flow 3.5 m3/h
Type of measurement Heating
Communication interface M-Bus with 3 pulse inputs
Length of flow meter 130 mm
Thread on meter body G1"
Specifications for Compact ultrasonic energy meters
Power supply Exchangeable 3 V lithium battery, estimated lifetime 10 years. 24 V and 230 V power packs available as accessory.
Temperature range 0…50 °C
Temperature range 0…50 °C
Temperature difference range, heating 3…100 K
Temperature difference range, cooling -3…-50 K
Temperature resolution 0.01°C
Ambient temperature 5…55°C
Storage temperature 1…60°C
Ambient humidity Max. 95% RH
Protection class IP65
Calculation of heat from K ΔΘ > 0.05K
Calculation of cooling from K ΔΘ < -0.05K
Measurement cycle, flow 2 s
Measurement cycle, temperature 2…60 s
Measurement cycle, temperature (using 230 V power pack) 2 s
Data storage Non-volatile memory
Interfaces M-Bus, pulse output or M-Bus with 3 pulse inputs
Reading dates 15 monthly and semi monthly values via display, 24 monthly and semimonthly values via optical interface or M-Bus. Annual billing date selectable.
Display LCD, 8 digits + special characters
Display units MWh, kW, GJ, m3, m3/h (kWh, GJ, l , l/h, MW, MMBTU, Gcal), 3 decimal places. The unit for energy consumption can only be set while the energy consumption is ≤ 10 kWh.
Mechanical class Class M1 (MID: 31.03.2004 annex I)
EMC Class E1 (MID: 31.03.2004 annex I)
Dimensions, calculator (WxHxD) 110 x 75 x 34.5mm
Cable length (measuring unit) 85 cm
Cable length 1.5m
Sensor element PT1000, DIN IEC 60751
Diameter, sensor 5mm
Installation Direct (see the accessories section) or indirect in a temperature sensor pocket per EN1434
Temperature sensor requirements, heat meter EU (MID) identification on the temperature sensors
Temperature sensor requirements, cooling meter National German approval as a temperature sensor for cooling meters. Requirements in other countries may be different.
Connection Threaded according to ISO 228/1
Pressure rating PN16
Media Water
Mounting position Horizontal or vertical
Point of installation Return flow (if forward flow installation is needed, the installation position can be changed with the main button)
Temperature range 15…90°C
Measuring principle Ultrasonic; time-of-flight
Dynamic range qi/qp 1:100 (1:50 for qp 0.6)
Accuracy according to MID Class 2
Recommended minimum system pressure 1 bar
VSR-1/2

Brass threaded fitting with coupling ring and gasket

VSR-3/4

Brass threaded fitting with coupling ring and gasket

VSR-1

Brass threaded fitting with coupling ring and gasket

VSR-1 1/2

Brass threaded fitting with coupling ring and gasket

KH-3/4

Ball valve with coupling ring and gasket

KH-1

Ball valve with coupling ring and gasket

KH-1 1/4

Ball valve with coupling ring and gasket

KH-2

Ball valve with coupling ring and gasket

KH-S-3/4

Ball valve with installation point for a temperature sensor (sockets M10x1)

KH-S-1

Ball valve with installation point for a temperature sensor (sockets M10x1)

KH-S-1 1/4

Ball valve with installation point for a temperature sensor (sockets M10x1)

KH-S-2

Ball valve with installation point for a temperature sensor (sockets M10x1)

VAD-1/2

Supply flow adapter with gasket, for direct mounting of a temperature sensor in a T-piece

VAD-3/8

Supply flow adapter with gasket, for direct mounting of a temperature sensor in a T-piece

PS-110-3/4

Threaded fit

PS-130-1

Threaded fit

OPTO-CABLE-USB

Optocoupler with USB interface

OPTO-TOOL

Software device monitor

POWERPACK-EM

230 V power pack

POWERPACK-EM-24

24 V AC power pack

BATTERY-EM

Battery for SSU and SSCU