Approval

• MID approved in accordance with energy meter EN 1434 and PTB K7.2 (German national cooling approval)

Approved temperature range

• Heating

• 0 … 180 °C (32 … 356 °F)

• Cooling

• 0 … 105 °C (32 … 221 °F)

Absolute temperature range

• -20 … +190 °C (-4 … -374 °F)

Differential temperature

• Heating

• 3 … 177 K (starting at 0.1 K)

• Cooling

• 3 … 102 k

Measuring accuracy

• Meets requirements of EN 1434
  Typically max. ± (0.5 + 3 K/) [%] of measured value

Flow range

Depends on pulse input value (IN0), see “Selection and Ordering data”

Power range value

Depends on pulse input value as follow:

Pulste input value (I/P or gal/P)

Max power [kW]

1

15000

2.5

15000

5

15000

10

150000

25

150000

50

150000

100

1500000

250

1500000

500 *)

1500000

1000 *)

15000000

*) not available for gal/pulse

User interface (always included)

Display

8-digit LCD display with associated pictograms/symbols

Units

MWh, GJ, Gcal, MBtu, m3, m3/h, GPM, gal, °C, °F, kW (gal is shown with factor x 100)

Totalizer value range

99 999 999 or 9 999 999.9 (0 and 1 digit after comma). Display digits: Flow in 6 digits; Volume, power and energy in 8 digits

Values

Power, energy, volume, flow rate, temperatures

Push button

Single push button for the menu controlling

Optical interface IrDA interface

ZVEI optical interface with M-Bus protocol as per EN 1434, connection via separate IrDA-adapter
Baud rate: 300 or 2400

Rated operation conditions

Enclosure

IP54 in accordance with IEC 529

Material

• Housing

C Lexan 141R (or similar); colors: light gray (top part) and black (bottom part)

• Pipe/wall fitting

PA 6,6 GF25 (or similar)

• Other plastic parts

ABS Cycolac GPM500 (or similar)

• Gaskets

Neoprene and rubber cable bushings: EPDM 50

• Rubber cable bushings

EPDM 50

Temperature

• Ambient

0 … 55 °C (32 … 131 °F)

• Storage

-25 … +70 °C (-13 … +158 °F)

Environment class

Mechanic class

M1

Electromagnetis class

E1 (MID) or C (DIN EN 1434)

Temperature input (always included)

Function

The temperature sensors must be connected to terminals 1-5 and 6-2 (TH) and 3-7 and 8-4 (TC) depending on cable type (2-wire or 4-wire).

Temperature range
Absolute measuring range

-20 … 190 °C (-4 … 374 °F) for T_H and T_C

Temperature difference

Start 0.1 K, min. 3 K, max. 177 K

Measurement resolution

0.125 K

Display resolution

T_H and T_C: 1 K
T: 0.1 K

Sensor types

Pt100 or Pt500 as 2-wire or 4-wire; Pt500 (4-wire with 5 m cable) as standard selected by order code;

Sensor cable length: up to 10 m (according EN 1434 and type approval).

Sensor connection

4-wire or 2-wire; auto detection of connected type

Flow input (In 0)
(always included)

Function

Used as standard for flow input of the external flowmeter. The input is marked as 10 (+ Flow Pulse),
11 (- Gnd) on the terminal strip.

Note: The pulse input value selection must be the same as the pulse output setting of the flowmeter.

Pulse value

1 … 1000 l/pulse or 1 … 100 gal/pulse, selection by order code. Will be shown at the device label

Pulse frequency

 100 Hz (200 Hz)

Pulse ON-time

 3 ms

Pulse OFF-time

 2 ms

Type

Active pulse input

Terminal voltage

3.6 V DC (supplied internally by FUE950)

Flowmeter installation place

The flowmeter installation place can be in the hot line or cold line (“forward or return pipe”) selected by order code. The “installation place” will be shown at the device display and nameplate

Connected cable

Max. 10 m (shielded cables recommended)

Ports for option modules

Type

The calculator features 2 ports for optional plug-in modules. Port 2 for one of the function modules and port 1 for one of the communication modules.

Function modules (Port 2)

• Pulse input module, 2 inputs (In1, In2)
• Pulse output module, 2 outputs (Out1, Out2)
• Combination module of 2 inputs (In1, In2) and 1 output (Out1)

Current output module

2 passive 4 ... 20 mA (#1, #2) (occupies both port 1 and 2)

Communication modules (Port 1)

M-Bus, RS 232 or RS 485 (M-Bus protocol, according EN 1434-3)

Pulse output (Optional module on port 2)

Function

The module contains connections for 2 pulse outputs, which can be programmed as desired using a software tool. The pulse outputs are marked as standard as O1, 'gnd' and O2, 'gnd' on the terminal strip and Out1 respectively Out2 in the display.

Type

Passive "open collector" pulse output, outputs potential isolated to each other

Pulse value

Last significant digits of the display (unit/pulse), selection by order code and setting can be read via display menu, settings changeable via software tool

Pulse output 1

• Pulse frequency

4 Hz

• Pulse width

100 ... 150 ms

• Pulse duration

125 ms ± 10 %

• Pulse break

125 ms ± 10 %

Pulse output 2

• Pulse frequency

 100 Hz, depending on the selected pulse length

• Ratio

Pulse duration/pulse break ~ 1:1

Pulse length

5, 10, 50, 100 ms (default: 5 ms)

External voltage supply

3 … 30 V DC

Current

20 mA with a residual voltage of 0.5 V

Possible pulse output selection

• Energy (default setting for 'Out1')
• Volume (default setting for 'Out2')
• Tariff energy 1
• Tariff energy 2
• Tariff condition 1 (limit switch)
• Tariff condition 2 (limit switch)
• Energy error
• Volume error
• Volume with specific display resolution (or with factor 0,1, 10 or 100 thereof)
• Energy with specific display resolution (or factor 0.1 thereof)

Pulse input (Optional module on port 2)

Function

Add-on module for two additional counters. The pulse input 1 is marked as I1, 'gnd' and the input 2 as I2, 'gnd' on the terminal strip and indicated in the display as separate registers IN1 and IN2 and can also be transferred via the communication modules.

Type

Passive "open collector" pulse inputs, outputs not potential isolated to each other, data are separate cumulated in different registers and are also stored on the two accounting day's.

Pulse value

Pulse value and the unit are configurable for energy, water, gas or electrical meter by a software tool

Pulse frequency

8 Hz

Pulse length

10 ms

External voltage supply

3 V DC (supplied internally by FUE950)

Current

based on Ri = 2.2 MW

Cable length

< 10 m connection limit

Current output module (Optional on port 1 and 2, both ports are occupied)

Function

The module contains connections for 2 passive current outputs, which can be programmed individually using the software tool. The outputs are marked „#1“ and „#2“ with corresponding polarity „+“ and „-“ on the terminal strip.

Terminal voltage

External supply: 10 … 30 V DC (passive output)

Signal range

4 … 20 mA; 4 mA = 0 value and 20 mA = default maximum values (for #1: Power in kW and for #2: Flow with the max. values as shown above).

Load

Max. 800

Upper limit

Up to 20.5 mA (exceed causes the error current value)

Signal on alarm

Errors are indicated with 3.5 mA or 22.6 mA (programmable, default: 3.5 mA)

Output values

Power, flow, temperature (configuring via software tool; default: for #1: Power and for #2: Flow)

M-Bus output (Optional module on port 1)

Type

The optional M-Bus plug-in module is a serial interface for communication with external devices (M-Bus Repeater)

Protocol

M-Bus according EN 1434-3

Connection

The connection is not polarity-conscious and is electrically isolated, connection of 2 x max. 2.5 mm2 wires, 300 or 2400 baud (auto baud detection), current drawn: one M-Bus load.

M-Bus address:
Each port has its own primary M-Bus address. The secondary address is unique for each calculator and is factory-set to equal the serial number.

RS232 output (Optional module on port 1)

Type

The optional module RS232 is a serial interface for data transmission with external devices, e.g. PC; Baud rate: 300 or 2400. The module contains a 3-pole terminal strip with terminals marked 62 (TX), 63 (RX) and 64 (GND). For this purpose a special data cable is necessary.

Protocol

M-Bus according EN1434-3

Connection

The module contains a 3-pole terminal strip with terminals marked 62, 63, 64 (max. 2.5 mm2); Connected cable length: max 10 m;

RS485 output (Optional on port 1)

Function

The optional RS 485 module is a serial interface for data transmission with external devices, e.g. PC; Baud rate: 2400. The module contains a 4-pole terminal strip with terminals marked D+, D-, Vcc and GND.

Protocol

M-Bus protocol according EN 1434-3

Connection

Terminals D+ and D-; electrically isolated; 2400 baud only.

Power consumption

230 V and 24 V versions

Typical current appr. 0.15 VA

3.6 V D-cell battery

Typical battery lifetime 10 years under normal conditions (no add-on modules, max. 40 °C ambient temperature)

Supply data

Internal voltage 3.6 V by the battery or plug-in power supply module

Battery, 3.6 V type (option)

3.6 V lithium D-cell, battery lifetime typically 16 years with independently powered flowmeter

230 V AC module (option)

Plug-in module for 230 V AC

24 V AC module (option)

(195 ... 253 V AC), 50/60 Hz (incl. battery backup)

Battery backup (option)

Plug-in module for 24 V AC (12 ... 30 V AC) (incl. battery backup)