CURS100 100 Ohm Current Terminal Input Module
Expands Capabilities
Allows datalogger to measure additional types of sensors
weather applications water applications energy applications gas flux & turbulence applications infrastructure applications soil applications

Overview

The CURS100 lets a Campbell Scientific datalogger measure a sensor or output device that outputs a current signal (for example, 4 to 20 mA). It converts the current signal to a voltage signal.

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Benefits and Features

  • Easy to install or remove
  • Connects directly into datalogger input terminals
  • Low power consumption

Images

Detailed Description

The CURS100 uses a 100 Ω resistor for the current shunt that allows currents up to 25 mA to be read on a ±2500 mV range (CR10X, CR510) and currents up to 50 mA to be read on a ±5000 mV range (CR800, CR850, CR1000, CR3000, CR5000, CR9000X).

Schematic for CURS100

CURS100-to-Sensor Hookup

Specifications

Shunt Resistor 100 Ω (bulk metal foil)
Tolerance ±0.01% (@ 25°C)
Power Rating 0.25 W
Maximum Temperature Coefficient ±0.8 ppm/°C
Dimensions 1.5 x 1.5 x 2.7 cm (0.6 x 0.6 x 1.0 in.) for body with prongs
Weight 6 g (0.2 oz)

Compatibility

Multiplexers

Our multiplexers are compatible with the CURS100.

Datalogger Considerations

Newer CR10X Wiring Panels can accommodate both the CURS100 and the cover associated with the CR10XTCR (reference thermistor for thermocouple measurements). Specifically, the physical configuration of the thermocouple cover, the datalogger input terminals, and the terminal input modules allow sufficient room for the cover to be used with the CURS100 attached. In contrast, older CR10TCRs are not deep enough.

Programming

The CURS100 output is measured with VoltDiff Instruction in CRBasic and with Instruction 2 (Differential Voltage) in Edlog. The CURS100 consumes one differential analog input; an adjacent analog ground channel accepts the analog "ground prong" of the CURS100. Not all datalogger terminal strips have this sequence on all channels, so please check your datalogger's wiring panel to confirm channel assignments, especially if you plan to use multiple terminal input modules.

Compatible Contemporary Dataloggers

CR200(X) Series CR800/CR850 CR1000 CR3000 CR9000X CR6 CR300 Series
*

Compatible Retired Dataloggers

CR500 CR510 CR10 CR10X 21X CR23X CR5000 CR7X CR9000
** *

Datalogger Notes:
*Compatible CR9000(X) modules are the CR9050 and the CR9052; the CR9051 is partially compatible.

**As shipped, the prongs on the CURS100 are too short to fit the CR7. If you're determined to use the CURS100 with a CR7, you can solder wire to the prongs, thereby extending their length.


Frequently Asked Questions

Number of FAQs related to CURS100: 1

  1. Yes. A CURS100 is used to convert a current signal (for example, 4 to 20 mA) output by a sensor to a voltage that can be measured by the CR1000. The precision 100 ohm resistor used for the current shunt allows currents up to 50 mA to be read on a ±5000 mV range.

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