Electrical Data

The temperature module TempScan20 has the following electrical characteristics:

Feature

Value

Power consumption

2.5 W

Power supply

Nominal voltage: 24 V DC
Operating voltage: 9 V DC to 32 V DC

Required current

200 mA at 12 V typical
100 mA at 24 V typical

Protection

The power supply input is protected against:

  • Reverse polarity
  • Transient surges as per EN 61326-1:2013, industrial environment, criterion B
  • Internal short circuits

The power supply input is galvanically isolated from the thermocouple inputs and the CAN interface.

 

Electrical Data for the Thermocouple Inputs

The thermocouple inputs of the temperature module have the following electrical data:

Feature

Value

Thermocouple types

B, E, J, K, N, R, S, and T

Measuring Range

-273 °C to +1,735 °C (-459.4 °F to +3,155 °F)

Measurement resolution

0.001 °C

Measuring accuracy

±1 °C

Measuring speed

100 ms per channel
max. 2.4 s for a complete cycle of all 20 channels

Thermal drift

Max. 150 ppm/°C of the range

Galvanic isolation

  • Isolation test voltage 500 V DC
  • The thermocouple inputs are galvanically isolated from the power supply input and the CAN interface.

Error Detection

  • Line interruptions
  • No updating of data in the analog-to-digital converter