The 1135_0 Precision Voltage Sensor measures the differential voltage between the input terminals and outputs the difference proportionally. The maximum differential voltage that can be measured accurately is ±30V.
The 1135 measures the differential voltage between the input terminals and outputs the difference proportionally. The maximum differential voltage that can be measured accurately is ±30V. When the positive and negative inputs are equal, the voltage output value is 2.5V. When the positive input is 30V greater than the negative input, the voltage output is 4.5V and when the positive input is 30V less than the negative input, the voltage output is 0.5V.
When measuring voltage levels below 5V, you’ll have more accuracy if you connect the leads directly to the analog input of the 1018 (or compatible product).
Since the 1135 can measure a differential voltage, the common mode rejection (CMR) is an important specification. CMR refers to the amount of voltage that both input terminals of a differential amplifier can be offset without affecting the output gain. For example, if the positive terminal sees a voltage of 7V and the negative terminal sees a voltage of 5V, then the CMR would be 5V and would output a value of 2V at unity gain. For the 1135, it is able to measure the differential voltage of ±10V with a CMR of 40V while keeping the accuracy within 2%. Please note that the error specifications do not include the error introduced by the Analog to Digital Conversion on the Analog Input. (if you are using the 1135 with a PhidgetInterfaceKit) The majority of error introduced by the Analog to Digital conversion is from the error in the voltage reference (0.5% max), and the limitation of resolution in the analog-to-digital converter. The best accuracy can be achieved by using a 2 or more point calibration of your system – effectively calibrating the 1135 and the PhidgetInterfaceKit in a single step. If you are calibrating, be sure to use a good quality multimeter to determine the voltage being applied.
Product Features of Phidgets Precision Voltage Sensor
This voltage sensor measures ±30V DC and connects to an analog input.
Comes packaged with
Product Specifications of 1135_0 Precision Voltage Sensor
|Sensor Type||Voltage (DC)|
|Controlled By||Voltage Input (0-5V)|
|Sensor Output Type||Non-Ratiometric|
|Voltage Difference Max||± 30 V DC|
|Relative Input Voltage Max||± 40 V DC|
|Voltage Resolution||73 mV DC|
|Measurement Error Max||2 %|
|Sensor Response Time Max|
|Voltage Offset Max||± 100 mV DC|
|Supply Voltage||5 V DC|
|Current Consumption Max||3.6 mA|
|Sensor Input Impedance||1 MΩ|
|Output Voltage Min||0 V DC|
|Output Voltage Max||5 V DC|
|Recommended Wire Size||16 – 26 AWG|
|Operating Temperature Min|
|Operating Temperature Max|
TITLE: Precision Voltage Sensor (1135_0 Precision Voltage Sensor)