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Technical Description

The CR9058E is an I/O module for the CR9000X-series and CR9000-series dataloggers. It contains 10 isolated differential channels and an internal RTD. The differential channels are used to measure thermocouples or other devices that have a low level voltage output. Each channel has its own isolated ground for connecting a shielded cable, and its own 24-bit A/D converter that supplies input isolation for up to ±60 Vdc. An internal digital signal processor filters noise. The module's RTD typically provides the reference temperature for thermocouple measurements.

The CR9058E includes one CR9058EC easy connector module. Easy connector modules allow sensor wiring to remain connected while the input module’s measurement electronics and the rest of the datalogger system are used elsewhere. Additional CR9055ECs are purchased as a separate line item.

CR9058E Specifications

  • Analog Channels: 10 isolated differential
  • Analog Voltage Range: ±60000 mV
  • Operating Temperature: -40° to +70°C

Gain Error

  • -40° to +50°C: ±0.02% of reading
  • -40° to +70°C: ±0.07% of reading

Offset Error

  • -40° to +50°C: ±0.01% of FSR
  • -40° to +70°C: ±0.01% of FSR

Measurement Resolution

  • ±2 Vdc Range: ±10 μV
  • 20 Vdc Range: ±100 μV
  • ±60 Vdc Range: ±300 μV

Typical Current Drain

  • Operating: 360 mA
  • Standby: 5 mA


  • Card and EC: 540 g (19.1 oz)
  • Card Only: 357 g (12.6 oz)
  • EC Only: 183 g (6.5 oz)


  • Without EC:
    24.1 x 2.5 x 11.5 cm
    (9.5" x 1.0" x 4.5")
  • With EC:
    24.1 x 2.5 x 16.3 cm
    (9.5" x 1.0" x 6.4")

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Shipping Weights & Dims

Single Box Shipping Weight:
     2 lbs
     0.9 kg