Combined heating/cooling meter, suitable for anti-icing mixtures. , Complete with paired Pt500 temperature sensor, integrator with LCD display. static flow meter, M-Bus and pockets. Power supply 230VAC. Threaded or flanged connection. The meter meets the demands according to SS-EN1434.
| Dimension range | DN 15-250 |
|---|---|
| PN | 16/25 |
| Temperature range | -20ºC to +130ºC |
| Material | Brass/Cast iron/Stainless steel |
| Article number | Amount |
|---|---|
| AT 7505-G15-1,5 | |
| AT 7505-G20-2,5 | |
| AT 7505-G25-6 | |
| AT 7505-G40-10 | |
| AT 7505-25-6 | |
| AT 7505-40-10 | |
| AT 7505-50-15 | |
| AT 7505-65-25 | |
| AT 7505-80-40 | |
| AT 7505-100-60 | |
| AT 7505-125-100 | |
| AT 7505-150-150 | |
| AT 7505-200-250S | |
| AT 7505-250-400S | |
| AT 7275SON-AN | |
| AT 7275SON-M | |
| AT 7275SON-L | |
| AT 7275SON-MOD | |
| AT 7505NAT2 | |
| AT 7505-BAT |
Combined heating/cooling meter, suitable for anti-icing mixtures. , Complete with paired Pt500 temperature…
Select| Dimension range | PN | Temperature range | Material |
|---|---|---|---|
| DN 15-250 | 16/25 | -20ºC to + 130ºC | Brass/Cast iron/Stainless steel |
AT 7505 is certified according to SS-EN1434 MID class 2, and performance according to SWEDAC 2006:4- Certified by registered body LEI, certification number LT-1621-MI004-PTB013.
CE-marking
According to MID 2014/32/EU
| Components | Material | |
|---|---|---|
| 1 | Meter body | Brass (DN 15-40) Cast iron (DN 50-150), Stainless steel (DN 200-250), available from DN 50 (not standard) |
| - Connection (thread/flange) | Thread DN 20-40, Flange DN 20-250 | |
| 2 | Membrane to ultra sound element | Stainless steel 1.4435 |
| 4 | Integrator protection | ABS & Polycarbonate |
| 5 | Temperature sensor | |
| - Protection sleeve | Stainless steel 1.4435 | |
| - Connection cable | Silicone |
| Threaded connection, permanent flow qp 1,5 to 10 | |||||||||||||
| Permanent flow qp (m3/h) | 1,5 | 2,5 | 6 | 10 | |||||||||
| Connection after gauge coupling | DN 15 | DN 20 | DN 25 | DN 40 | |||||||||
Meter's thread* | G 3/4" | G 1" | G 1 1/4" | G 2" | |||||||||
| Build length | 110 | 190 | 260 | 300 | |||||||||
| Weight | 1,8 | 2,3 | 2,9 | 6,1 | |||||||||
Measurements in mm, weight in kg *) The gauge's thread is one size larger than connection after gauge coupling | |||||||||||||
| Flanged connection, permanent flow qp2,5-10 | ||||||||||||||
| Permanent flow qp (m3/h) | 2,5 | 6 | 10 | 15 | 25 | 40 | 60 | |||||||
| Flanged connection | DN 20 | DN 25 | DN 40 | DN 50 | DN 65 | DN 80 | DN 100 | |||||||
| Length (mm) | 190 | 260 | 300 | 270 | 300 | 300 | 360 | |||||||
| Weight | 3,0 | 4,6 | 6,8 | |||||||||||
| Measurements in mm, weight in kg | ||||||||||||||
AT 7505 is a static compact meter for thermal energy measuring in heating and cooling application with water or anti-icing mixtures as fluid. The meter consists of a static flow meter of oscillary type and piezo element, paired PT 500 temperature sensors and a separate electronic integrator with multifunction LCD display for display of accumulated energy and volume, factory fitted M-Bus and pockets. There is also a possibility to read instantaneous values for flow, effect, temperature for inlet, return and temperature difference, max and minium values, and self test with error indication.
AT7505 has a static flow meter therfore, without movable parts. This means that it is free from parts that can be worn out and, since it doesn't have any magnetic parts, is not sensitive of water with a high magnetite content. The flow meter is using the oscillary principle to measure the velocity of the fluid and piezo element sensors to detect the pressure difference. The frequency of the oscillation is proportional to the the fluid's velocity.
The flow value is integrated with the temperature loss over the pipe and the so called s k K-factor, which is calculated and presented as energy amount on the display.
The meters are delivered as a standard with mains power supply but battery supply is available as an option on request. The meter should always be installed in the colder pipe line, in other words the return pipe line in heating systems and the input pipe line on coolings systems, with the meter head angled 45 degrees.
The meter can be retro fitted with AMR modules type M-bus (slot 2), MODbus, LON or analogue 4-20 mA
| Flow meter | DN | 15 | 20 | 25 | 40 | 50 | 65 | 80 | 100 | 125 | 150 | 200 | 250 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Nominal flow, qp | m³/h | 1,5 | 2,5 | 6 | 10 | 15 | 25 | 40 | 60 | 100 | 150 | 250 | 400 |
| Max flow, qs | m³/h | 3 | 5 | 12 | 20 | 30 | 50 | 80 | 120 | 200 | 300 | 500 | 800 |
| Minimum flow, qi | m³/h | 0,015 | 0,025 | 0,06 | 0,10 | 0,15 | 0,25 | 0,8 | 1,2 | 2 | 3 | 5 | 8 |
| Pressure loss by qp | mbar | 250 | 250 | 160 | 250 | 250 | 250 | 90 | 100 | 100 | 100 | 100 | 100 |
| Dynamic measuring area (qp/qi) | 100 | 100 | 100 | 100 | 100 | 100 | 50 | 50 | 50 | 50 | 50 | 50 | |
| Nominell PN | 16 | 16/25 | 16/25 | 16/25 | 16/25 | 16/25 | 16/25 | 16 | 16 | 16 | 16 | 16 |
| Pressure and temperature | |
| Pressure | max 16 bar, max 25 bar flanged version |
| Temperature range | -20°C to + 130°C |
| Measuring cycles (specified in seconds) | |
| Temperature | |
| Mains power supply 230V | 3 sec |
| Battery | 30 sec |
| Measuring characteristics | |
| Normal flow qp - minimum flow qi | 100:1 (Qp 1,5 - Qp 25) 50:1 (Qp 40-Qp 400) |
| Max flow qs - normal flow qp | 2:1 (all models) |
| Temperature range media | - 20 - +130 °C |
| Accuracy | Class 2 according to EN 1434-1 (all models) |
| Integrator | |
| Temperature range, T | -20- +200 °C |
| Temperature difference range, ∆T | 3-150 K |
| Electromagnetic environment class | Class E 1 |
| Mechanical environment class | Class M 1 |
| Surrounding temperature | 5-55 °C |
| Storage temperature | -25 - 70 °C |
| Protection class | IP 65 (only flow sensor IP 68) |
| Display | LC-display with 8 figure display with alternative symbols |
| Measure unit of consumed energy | kWh / MWh |
| Temperature sensor | PT 500, dual wire connection |
| Energy consumption | 230 VAC as an option 3,6 vDC lithium battery. |
| Communication ports for remote reading | 2 st (Integrated M-Bus (1 slot) and Pulse (2 slot) |
| Data ports | - Optic |
| Length of cable between integrator and flow gauge | 3 m |
| Measurements (BxHxD) | 138x110x46,3 mm |
| Temperature sensor, paired | |
| Resistance elements | Platina Pt 500 according to DIN EN 60751 |
| Temperature range | 0- +150 °C |
| Insert length/diameter, standard | |
| Qp 1 - 2,5 m³/h (DN 15 - DN 20) | 34 mm/6 mm, 2 m cable length |
| Qp 3,5 - 15 m³/h (DN 25 - DN 50) | 84 mm/6 mm, 2m cable length |
| Qp 25 - 150 m³/h (DN 65 - DN 150) | 134 mm/6 mm, 2m cable length |
| Qp 200 - 400 m³/h (DN 200 - DN 250) | 174 mm/6 mm, 2m cable length |
| Thread on pocket | G 1/2 |
| PTB approval | K 7.2 |
The comsumption register is shown on a 8 figure LCD where the values for energy, effect, volume, volume flow, temperature inlet and return, delta T and eventual error code is displayed.
Necessary configuration settings and changes are possible with the optical interface or through M-bus.
The energy meter has a LCD-display with 8 figures for main values and 7 different menus. Through a simple button press on the key (straight arrow) you will be looped between different measure values within a menu group. To change between the 6 different sub menues hold the key (straight arrow button) down for 3-4 seconds.
The six different menus that are shown are specified below:
1: Main menu
- Accumulated consumption (energy volume)
- Instantaneous values (effekt, flow, temperature, delta T)
2: Reading menu
3: Monthly values
4: Average values
5: Peak values
6: Configurtion menu
7. Service menu
For remote reading and connection to DUC/Master, there are several plugin modules. The integrator is provided with two slots for remote reading modules, which gives you a high degree of flexibility when it comes to remote reading.
The following modules can easily be installed without damaging the verification seal:
Factory-fitted communication outputs
Pulse outputs (blocks 16,17 &1 8)
Type open collector, Energy ( blocks 16 & 17) och volume (blocks 18 & 17).
M-bus (block 24 &25)
The meter can be adressed either by its primary or secondary adress which are displyed in the LCD. The secondary adress is also shown on a sticker above the PCB inside the integrator. 1 load unit (1,5 mA).
Retro-fitted communication modules
LONWORKS® module, AT 7275SON-L
Integration to the meter by FTT-10A (Free Topology Transceiver)
MODBUS module, AT 7275SON-MOD
MODBUS-RTU
ANALOGUE MODULE, AT 7275SON-AN
4-20 mA
M-BUS module (2nd) AT 7275SON-M
Only if a second M-Bus communication module is needed, M-Bus according to EN 13757-3
| Specifications pulse output | |
| Pulse length | Roughly 100 ms (max pulse frequency 5 Hz) |
| Max voltage | 30 V |
| Max power | 40 mA |
| Output Energy | Connection block 16 & 17, 10 l/puls = 1 kWh, 100 l/puls = 10 kWh |
| Output Volume | Connection block 18 & 17 |
| Accessories | Order number |
|---|---|
| Couplings (2 per meter) for G 3/4 (is also a part of the installation kit below) - G 2 | AT 7056A15 x2 pc, 7056A20-2 /25-2 /40-2 |
| Gauge block | |
| - 1pc. 110 mm | AT 7590P15-110 |
| - 1pc 190 mm | AT 7590P20-190 |
| -1 pc 260 mm | AT 7590P25-260 |
| - 1 pc 300 mm | AT 7590P40-300 |
| Transition piece | AT 7055R20-25 |
| to obtain 130 mm G 1 build length from 110 mm G 3/4 | |
| Remote reading modules | |
| M-Bus module (2nd module) for remote reading according to EN 13757-3 | AT 7275SON-M |
| MODBUS module for MODBUS RTU | AT 7275SON-MOD |
| Analog signal for communication through analog signal 4-20 mA | AT 7275SON-AN |
| LONWORKS® module | AT 7275SON-L |
| Power module 230V with two outputs for MODBUS and LON modules | AT 7505NAT2 |
| Spare parts | |
| Temperature sensor paired Pt 500, cable length 2 m. Length 45 mm | AT 7276-45PT500 |
| Batteri 3,6 volt battery for battery powered unit | AT 7505-BAT |
| Options | ||
|---|---|---|
| Compact meter | ||
| - in flanged performance *) | AT 7505... | |
| - in threaded performance *) | AT 7505-G... | |
| *) See the section how to order | ||
During the meter installation it should be taken in to account that the measuring is done correctly metrologically, and that the meter is installed in such a way that maintenance and meter reading can be performed easily. The flow meter should be mounted in the pipe line that has the lower temperature, i.e. for heating systems in the return pipe and in cooling systems in the inlet pipe. If the meter is installed in the wrong pipe line the measured values are not reliable and the MID-approval is no longer valid. Re-configuration of installation can be performed by Armatec service.
The flow meter can be mounted both horizontally and vertically. The meter is recommended to be installed horizontally with the meter pipe tilted 45° to the side. A straight line before or after the meter isn't necessary, but a calm undisturbed straight line of 3xDN before the meter is recommended to obtain a good and stable flow profile. The flow meter should be placed on a low point to prevent the effect of air in the system. The placement of the flow meter should also not be directly after a valve or before a pump. It is recommended to install a shut down valve before and after the meter to facilitate a possible replacement of the meter.
Note! Meters with threaded connection is only intended for flat seal with required water meter couplings and fiber gaskets, e.g. AT 7056. Threaded joint with, as an example, flax or corresponding seal can not be used.
Media temperature over 90oC and constantly high ambient temperature (over 55oC) the electronic parts (integrator) should be mounted in an environment with room temperature. The standard meter has a 3 m cable between integrator and flow sensor. This cable can not be cut or spliced since the integrator and flow sensor are calibrated and certified as one unit. If the cable is cut the compact meter will not work and will need to be replaced by a new compact meter. The integrator is prepared for wall mounting.
Connection of temperature sensors with dual wire connection.
The sensors are marked with blue and red color marking respectively for mounting in cold and hot flow line respectively. The sensor's/thermal well's tip should be placed in the middle of the flow.
| Threaded performance, 230V, installation in colder pipe line, fluid* | ||||||||
| AT-no | qp | Length (mm) | DN | Comment | ||||
|---|---|---|---|---|---|---|---|---|
| 7505-G15-1,5 | 1,5 | 110 | 15 | |||||
| 7505-G20-2,5 | 2,5 | 190 | 20 | |||||
| 7505-G25-6 | 6 | 260 | 25 | |||||
| 7505-G40-10 | 10 | 300 | 40 | |||||
| * if another fluid then water is used, concentration and type of fluid must be specified when ordering | ||||||||
| Flanged, main power supply 230V, installation in colder pipe line, fluid* | |||
|---|---|---|---|
| AT-no | Qp | DN | Length |
| AT 7505-25-6 | 6 | 25 | 260 |
| AT 7505-40-10 | 10 | 40 | 300 |
| AT 7505-50-15 | 15 | 50 | 270 |
| AT 7505-65-25 | 25 | 65 | 300 |
| AT 7505-80-40 | 40 | 80 | 300 |
| AT 7505-100-60 | 60 | 100 | 360 |
| AT 7505-125-100 | 100 | 125 | 250 |
| AT 7505-150-150 | 150 | 150 | 300 |
| AT 7505-200-250S | 250 | 200 | 350 |
| AT 7505-250-400S | 400 | 250 | 450 |
| * if another fluid then water is used, concentration and type of fluid must be specified when ordering |
| AT-no | Description |
|---|---|
| 7275SON-M | M-Bus module |
| 7275SON-L | LONWORKS® module |
| 7275SON-MOD | MODBUS module |
| 7275SON-AN | Analogue module (4-20mA) |
