Weidmuller TWI-2 - Signal isolator in 2-wire design, 2-channel - Handbuch (Seite 12)

1
•Calibration
general
All instruments are fully calibrated before leaving the factory and
should not need adjustment until the next scheduled calibration.
equipmentrequirements
• A suitable signal source (mA or V) for the inputs
• Two accurate digital multimeters (accurate to 0.05 mV and ±0.1 μA)
• A suitable regulated power supply, e.g., RPS/40 V AC/4 V DC/x
• Flat bladed screwdriver (blade width less than .54 mm / 0.1 inch)
Digital multimeters are frequently better at measuring voltages than
currents, so you may wish to measure the voltage across an accurate
standard resistor (say 10 Ω ±0.05 %) when monitoring current signals.
If you have a Mann Industries Portacal 1000 calibrator you will not
need the second multimeter or the regulated power supply.