VDIV2:1 2-to-1 Voltage Divider Terminal Input Module

Overview

The VDIV2:1 uses precision resistor networks to bring sensors with high output voltages into your data logger’s common mode range, allowing your data logger to measure the sensor. The VDIV2:1 divides the sensor’s signal voltage by a factor of two.

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Benefits and Features

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

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Detailed Description

The VDIV2:1 contains two 10 kΩ resistors that have a ratio tolerance of ±0.02%. Increased input settling time may be necessary to accommodate the relatively high resistance of the voltage divider.

Specifications

Division Ratio 2:1
Resistors 10 kΩ and 10 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.

Data Loggers

Product Compatible Note
21X (retired)
CR10 (retired)
CR1000
CR10X (retired)
CR200X (retired)
CR206X (retired)
CR211X (retired)
CR216X (retired)
CR23X (retired)
CR295X (retired)
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

Data Logger Considerations

The VDIV2:1 uses two adjacent single-ended analog inputs (one differential channel); an adjacent analog ground channel accepts the "ground prong" of the VDIV2:1. Not all data logger terminal strips have this sequence on all channels, so please check your data logger'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 data logger input channels with a VDIV2:1 attached; older CR10TCRs are not deep enough.

Programming

The VDIV2:1 is measured with either the VoltSE or VoltDiff Instruction in CRBasic, and with Instruction 1 (SE Volts) or 2 (DiffVolts) in Edlog. Each VDIV2:1 can be wired to make one differential measurement or two single-ended measurements.


Frequently Asked Questions

Number of FAQs related to VDIV2:1: 3

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  1. 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.
  2. 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

  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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