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Transmitter WAT 02

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In case of connection of load cells with 4 wires, make a bridge between power supply+ … reference+ and power supply- … reference-

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Transmitter WAT 02

Technical Specifications

Power supply24 V dc 15 %
Max power consumption3 W
IsolationClass III
Operating temperature-10 / +40C (14 F / 104F) Humidity maximum 85% non-condensing
Storage temperature-20 / +60 C
Overall dimensions76 x 90 x 65 mm /2.99 x 3.54 x 2.56 in (l x h x p)
MountingSupport DIN or OMEGA rail
Case materialPolyamide 6.6 UL 94V-0, self-extinguishing
ConnectionsRemovable screw terminals. Pitch screws terminal blocks 5.08 mm
Power supply load cells10 V dc / 120 mA (maximum 4 cells with 350 Ω in parallel) short circuit protection
Linearity0,02 % of full scale
Temperature deviation0,005 % of full scale/C
Measuring range1 mV/V 2 mV/V 3 mV/V
Zero / FS CalibrationAdjustment zero & f. s. fine with 18-turn resistive trimmer, zero -8% to +3% f.s.; gain 5% f.s.
Analog integrator filterAdjustable w. single-turn trimmer
Filter response time10-90%: 5250 ms; 4-20mA: 5 ms
Analog output in tension0 - 10 V
 Impedance≥ 10 kΩ
Analog output under current0 - 20 mA / 4 - 20 mA
 Impedance≤ 300 Ω
Conforms to standardsCompliance to EMC norms: EN61000-6-2, EN61000-6-3, Compliance electric safety: EN 61010-1
For the complete and latest technical specifications, please refer to the technical data sheet which can be downloaded here:
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TypeTerminal block MA 9P pitch 5.08
1+24 Vcc (voltage supply)
2GND (voltage supply)
3+ Exc. Load cell
4- Exc. Load cell
5- Signal load cell
6+ signal load cell
7Current analog out 0-20mA/4-20mA
8- Analog out (current / voltage)
9Voltage Analog out 0-10Vcc
Connections  Transmitter WAT 02


General precautions to be followed in the installation and assembly of load cells:

  • Follow the direction of application of force on the load cell
  • Do not exceed the limits of the temperature as indicated in the data sheet
  • Do not remove labels from the load cell
  • Adequately protect the cables with sleeves or channels
  • Carry out on each load cell a ground connection with suitable cable, shunt on mounting accessories
  • Do not carry out any welding on the mechanical structure after mounting the load cell
  • Avoid or reduce to a minimum level any mechanical constraints between the rigid structure and the weighing structure to avoid error in weighing and return to zero
  • In case of vibration or dynamic loads product the load cells with puffers / shock absorbers
  • Protect load cell from any dust accumulation with any appropriate means