Data Sheet

Description

The linear resistance to voltage module was designed for the eTape liquid level sensors. The eTape

sensor plugs directly into the four-pin header on the module. The module is designed to convert

the variable resistance output of the eTape liquid level sensor to a linear output voltage between

~0 volts to ~5 volts DC. Applying the output voltage of the module to a microcontroller, PLC or

other voltage monitoring device can more accurately measure and monitor the liquid level output

of the eTape sensor. The module is calibrated using a five-point calibration process at 0%, 25%, 50%,

75% and 100% of full scale.

Theory of Operation

The module converts the variable resistive output of the eTape sensor to a voltage using a

programmable signal conditioning chip designed to amplify the change in resistance. The

programmable chip conditions the eTape input signals by amplification and digitization through

an analog front end channel. With the programmed firmware in the on-chip ARM Cortex M0

processor, the chip performs pre-programmed compensation algorithms. The module has a push

button to calibrate the module across the complete range of 5-inch to 70-inch eTape sensors.

Specifications

Thickness: 0.17” (4.3mm) Connector: 4 Pin Female & 3 Pin Male Header

Length: 0.85” (21.6 mm) Temperature Range: -40°F - 257°F (-40°C - 125°C)

Width: 0.75” (19.1 mm) Power Requirements: 6 – 30VDC

Voltage Output Range: 0 – 5 VDC +/-5%

Connection and Installation

Connect to the module by attaching the eTape sensor to the four-pin socket [1] located at the

bottom of the module. Then connect Power (VIN) and ground (GND) to the three-pin header [2]

located at the top of the module (6 – 24 VDC). Connect your voltage monitoring device to monitor

the output (0-5V).

1- eTape Sensor Socket

2- Power and Output header

3- Calibration Button

4- Calibration LED

Milone Technologies, Inc - 17 Ravenswood Way - Sewell, New Jersey 08080 - Phone: (856) 270-2688

Email: info@milonetech.com Web: www.milonetech.com

0-5VDC Linear Resistance to Voltage Module

PN-05V00199 REV 2

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0-5VDC Linear Resistance to Voltage Module PN-05V00199 REV 2 Description The linear resistance to voltage module was designed for the eTape liquid level sensors. The eTape sensor plugs directly into the four-pin header on the module. The module is designed to convert the variable resistance output of the eTape liquid level sensor to a linear output voltage between ~0 volts to ~5 volts DC.
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0-5VDC Linear Resistance to Voltage Module PN-05V00199 REV 2 Calibration The module is calibrated using a five-point calibration process at 0%, 25%, 50%, 75% and 100% of full scale. Connect the e-Tape sensor to be calibrated using the 4-pin socket. (1) Hold down the calibration button while powering on the module. The red calibration LED will light up solid. (2) With the sensor not submerged in liquid, press the calibration button once. The LED will flash slowly after a couple of seconds.
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0-5VDC Linear Resistance to Voltage Module PN-05V00199 REV 2 Complete eTape Assemblies If you purchase a complete assembly with the polycarbonate tube and housing cap, the 0-5V module will come pre-calibrated and potted inside the black housing cap. Therefore, there is no access to the module for re-calibration.