AD-FM 300/600 GA, AD-FM 300/600 FE


The AD-FM 300 FE/GA (1-channel) and AD-FM 600 FE/GA (2-channel) are freely programmable frequency/analog measuring transducers with display units for panel mounting (FE) and DIN-rail mounting (GA). Through its multi-function input frequency processing and the up to 2 analog outputs (current/voltage) of each channel and the assessable digital outputs, the device is ideally suited for the display of instantaneous flow with simultaneous assessable for counting pulse water meter with main and secondary points. Especially for water meters with bypass a scaled summation is integrated (only AD-FM 600 FE/GA). A low level suppression is shiftable. Both the instantaneous flow rates and the meter quantites are outputted added.

AD-FM 300/600 GA, AD-FM 300/600 FE


The main area of application is the through-flow measuring at water meters. Further applications are the measuring of rotation speed or energy consumption.

Specific characteristics

  • 1 (FM300) or 2 (FM600) channels in just one housing
  • Inputs: NAMUR, contact, open collector, 3-conductor Opto, 24V activ
  • Analog outputs: each channel 1 current and 1 voltage (synchronous)
  • Digital outputs: relay respectively optocouple (puls function or limit contact)
  • Scaled summation
  • Shiftable low level suppression
  • Programming directly on the device or via a free programming software
  • DIN rail or panel mounting

Business data

Order number
AD-FM 300 FE 1-channel; front mounting;
1 relay output
AD-FM 300 FE-O 1-channel; front mounting;
1 semiconductor output
AD-FM 300 GA 1-channel; DIN rail mounting;
1 relay output
AD-FM 300 GA-O 1-channel; DIN rail mounting;
1 semiconductor output
AD-FM 600 FE 2-channel; front mounting;
2 relay outputs
AD-FM 600 FE-O 2-channel; front mounting;
2 semiconductor outputs
AD-FM 600 GA 2-channel; DIN rail mounting;
2 relay outputs
AD-FM 600 GA-O 2-channel; DIN rail mounting;
2 semiconductor outputs
EClass 27210128
Customs tariff number / country of origin 8543 70 90 / Deutschland


Data sheet pdf en-fm600.pdf (454 kB)
Instruction manual pdf man-fm600-ad-en.pdf (468 kB)
Tender text zip (3 kB)
Safety instructions pdf ad-safety-instructions.pdf (43 kB)

Technical specifications

Digital inputs
Input NAMUR (EN 60947-5-6), reed contact, open-collector, 3-lead opto-transmitteror 24V active
Input frequency Min. 0 ... 10 mHz; max. 0 ... 10 kHz
Frequency generator supply Active: max. 13,5V (max. 20mA); NAMUR:8V/8mA
Contact debouncing Activatable, pulse duration > 40 ms
Current outputs
Output range 0 ... 20 mA; 4 ... 20 mA
Max. burden 400 Ohm
Residual ripple <50 µAss
Voltage outputs
Output range 0 ... 10 V, 2 ... 10 V
Min. burden 10 kOhm
Residual ripple <20 µVss
Relay outputs
Maximum switching load AC 250 V, 2 A
Maximum switching load DC 50 V, 2 A
Contact construction Changeover contact
Switching operations mechanical 10000000
at 230V/2A AC, cos(phi)=1 600000
at 230V/2A AC, cos(phi)=0,4 200000
at 24V/1 A DC 200000
Semiconductor output (optional)
Max switching voltage 30 V DC
Max. switching current 20 mA DC
Voltage drop < 2 V
Graphic-LCD 122x32 Pixel, background lit
Digital display 5-digit, can be configured
Display functions each channel Input frequency, scaled instantaneous measuring value, quantity impulse, scaled dimension as quasi analogue bar, channel description and scaling unit in plain language
Unit 0,3%
Temperature influence <100 ppm / K
Response time ~70 ms
Supply voltage 20 ... 253 V DC / 50 ... 253 V AC
Max. power consumption 4 W / 5 VA
Housing front mounting
Manner of fastening Panel-mount-case (DIN 43 700)
Type of protection IP 65
Connection method Screw clamp
Dimensions (WxHxD) 96x48x131 mm
Front panel cut out 92x44 mm
Switchboard thickness 1,5-10 mm
Weight ~230 g
DIN rail housing
Manner of fastening DIN rail 35mm (EN 50022)
Type of protection IP 20
Connection method Screw clamp
Dimensions (WxHxD) 100x74x119 mm
Weight ~230 g
Environmental conditions
Ambient temperature -10 ... 50 °C
Storage and transport -10 ... 70 °C (no condensation)
Product family standard EN 61326-1
Emitted interference EN 55011, CISPR11 Cl. B, Gr. 1
In a critical EMC environment, shielded encoder cables are recommended.
Electrical safety requirements
Product family standard EN 61010-1
Overvoltage category II
Pollution degree 2
Galvanic isolation, test voltages
Input/output 2 kV RMS (1 min.)
Signal/auxiliary voltage 4 kV RMS (1 min.)

Block and wiring diagram

AD-FM 300/600 GA, AD-FM 300/600 FE


AD-FM 300/600 GA, AD-FM 300/600 FE

Circuit examples

AD-FM 300/600 GA, AD-FM 300/600 FE

CAD / CAE Daten

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