VDIV10:1 10-to-1 Voltage Divider Terminal Input Module

Overview

The VDIV10:1 uses precision resistor networks to bring sensors with high output voltages into your datalogger’s common mode range, allowing your datalogger to measure the sensor. The VDIV10:1 divides the sensor’s signal voltage by a factor of ten.

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Benefits and Features

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

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Detailed Description

The VDIV10:1 contains a 90 kΩ resistor and a 10 kΩ resistor. Both resistors have a ratio tolerance of ±0.02%.

The maximum input voltage into the VDIV10:1 should not exceed ±50 V. Increased input settling time may be necessary to accommodate the relatively high resistance of the voltage divider.

Schematic for VDIV10:1

Hookup for one sensor measured differentially

Hookup for two single-ended sensor measurements

Specifications

Division Ratio 10:1
Resistors 10 kΩ and 90 kΩ
Ratio Tolerance ±0.02% (@ 25°C)
Power Rating per Element 0.1 W (@ 70°C)
Maximum Ratio Temperature Coefficient 2 ppm/°C (0° to 70°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

Note: The following shows notable compatibility information. It is not a comprehensive list of all compatible or incompatible products.

Dataloggers

Product Compatible Note
21X (retired)
CR10 (retired)
CR1000
CR10X (retired)
CR200X (retired) User-modifications are required to use the VDIV10:1 with the CR200X series. Contact Campbell Scientific for more information.
CR206X (retired) User-modifications are required to use the VDIV10:1 with the CR200X series. Contact Campbell Scientific for more information.
CR211X (retired) User-modifications are required to use the VDIV10:1 with the CR200X series. Contact Campbell Scientific for more information.
CR216X (retired) User-modifications are required to use the VDIV10:1 with the CR200X series. Contact Campbell Scientific for more information.
CR23X (retired)
CR295X (retired) User-modifications are required to use the VDIV10:1 with the CR200X series. Contact Campbell Scientific for more information.
CR300
CR3000
CR310
CR500 (retired)
CR5000 (retired)
CR510 (retired)
CR6
CR800
CR850
CR9000 (retired) Compatible CR9000 modules are the CR9050 and the CR9052; the CR9051 is partially compatible.
CR9000X Compatible CR9000X modules are the CR9050 and the CR9052; the CR9051 is partially compatible.

Additional Compatibility Information

Datalogger Considerations

The VDIV10:1 uses two adjacent single-ended analog inputs (one differential channel); an adjacent analog ground channel accepts the "ground prong" of the VDIV10:1. 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.

Please note that if a CR10X will be used to measure thermocouples in the same application, newer CR10X Wiring Panels and the CR10XTCR Reference Thermistor (with its accompanying thermocouple cover) are deep enough to cover the datalogger input channels with a VDIV10:1 attached; older CR10TCRs are not deep enough.

Programming

The VDIV10:1 is measured with either the VoltSE or VoltDiff Instruction in CRBasic, and with Instruction 1 (SE Volts) or 2 (DiffVolts) in Edlog. Each VDIV10:1 can be wired to make one differential measurement or two single-ended measurements.


Frequently Asked Questions

Number of FAQs related to VDIV10:1: 3

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  1. The CR1000 can measure analog voltages in the ±5 Vdc range. A voltage divider such as the VDIV2:1 is required to reduce 10 Vdc to an acceptable range. For examples of wiring and programs, see the VDIV10:1/VDIV2:1 manual

  2. These two voltage dividers can handle different maximum input voltages.

    • The VDIV2:1 has a maximum input voltage of 10 V.
    • The VDIV10:1 has a maximum input voltage of 50 V.
  3. The CR1000 has analog inputs that measure voltage in a ±5 Vdc range. To measure a 12 Vdc voltage, a voltage divider is needed. In its simplest form, a voltage divider comprises two resistors. Precision differential voltage dividers, such as the VDIV10:1, are available for this purpose.

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