1134 User Guide - Revision history

Mparadis at 14:34, 9 May 2018

2018-05-09T14:34:06Z

← Older revision		Revision as of 14:34, 9 May 2018
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			__NOINDEX__
	[[Category:UserGuide]]		[[Category:UserGuide]]
	{{UserguideTOC\|1134.jpg\|1134}}		{{UserguideTOC\|1134.jpg\|1134}}

Mparadis: /* Technical Details */

2012-08-21T15:23:48Z

Technical Details

← Older revision		Revision as of 15:23, 21 August 2012
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	===Analog Input Cable Connectors===		===Analog Input Cable Connectors===
	{{UGasens}}		{{UGasens}}

			==API==
			{{SensorAPI}}

	==Product History==		==Product History==
	{{UGhist}}		{{UGhist}}
	{{UGrow\|March 2010 \|0 \|N/A \|Product Release }}		{{UGrow\|March 2010 \|0 \|N/A \|Product Release }}

Burley at 15:37, 10 August 2012

2012-08-10T15:37:36Z

← Older revision		Revision as of 15:37, 10 August 2012
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	[[Category:UserGuide]]		[[Category:UserGuide]]
			{{UserguideTOC\|1134.jpg\|1134}}
	==Getting Started==		==Getting Started==

Mparadis: /* Formulas */

2012-08-09T16:37:05Z

Formulas

← Older revision		Revision as of 16:37, 9 August 2012
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	::<math>\text{Resistance (Ohms)} = R_{eq} * \frac{1000}{\text{SensorValue} - 1}</math>		::<math>\text{Resistance (Ohms)} = R_{eq} \times \frac{1000}{\text{SensorValue} - 1}</math>

Burley: /* Formulas */

2012-08-09T16:28:09Z

Formulas

← Older revision		Revision as of 16:28, 9 August 2012
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	::<math>Resistance (Ohms) = R_{eq} * \frac{1000}{SensorValue - 1}</math>		::<math>\text{Resistance (Ohms)} = R_{eq} * \frac{1000}{\text{SensorValue} - 1}</math>

Burley: /* Formulas */

2012-08-09T16:26:19Z

Formulas

← Older revision		Revision as of 16:26, 9 August 2012
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	::<math>~~\text{~~Resistance (Ohms)} = R_{eq} * \frac{1000}{SensorValue - 1}</math>		::<math>Resistance (Ohms) = R_{eq} * \frac{1000}{SensorValue - 1}</math>

Burley: /* Technical Details */

2012-08-09T15:46:40Z

Technical Details

← Older revision		Revision as of 15:46, 9 August 2012
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	The Formula to translate SensorValue into resistance is:		The Formula to translate SensorValue into resistance is:

	<math>Resistance (Ohms) = ~~R<sub>~~eq~~</sub>~~ * frac{1000}{SensorValue - 1}</math>
			::<math>\text{Resistance (Ohms)} = R_{eq} * \frac{1000}{SensorValue - 1}</math>


	Where R<sub>eq</sub is the equivalent resistance of the switches that are flipped on in Ohms. The Switchable Voltage Divider has an internal buffer on the output. This allows the output to be read without distortion caused by the device reading the measurement, such as the PhidgetInterfaceKit.		Where R<sub>eq</sub is the equivalent resistance of the switches that are flipped on in Ohms. The Switchable Voltage Divider has an internal buffer on the output. This allows the output to be read without distortion caused by the device reading the measurement, such as the PhidgetInterfaceKit.

Mparadis: /* Variable resistance sensors */

2012-07-30T15:25:55Z

Variable resistance sensors

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	Here are some interesting variable resistance sensors that could be used with the Voltage Divider.		Here are some interesting variable resistance sensors that could be used with the Voltage Divider.

	{\| ~~{{table}}~~ border = 1		{\| border = 1
	\| align="center" style="background:#f0f0f0;"\|'''Sensor Type'''		\| align="center" style="background:#f0f0f0;"\|'''Sensor Type'''
	\| align="center" style="background:#f0f0f0;"\|'''Manufacturer'''		\| align="center" style="background:#f0f0f0;"\|'''Manufacturer'''

Mparadis: /* Configuring the Voltage Divider */

2012-07-26T18:43:14Z

Configuring the Voltage Divider

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	===Configuring the Voltage Divider===		===Configuring the Voltage Divider===
	{\|		{\|
	\|To optimize the voltage divider to meet your needs, you have to adjust the switchable resistance to match the characteristics of your chosen variable resistor. First, adjust the resistance for no stimuli on your sensor, then apply maximum stimuli and make sure that the Sensor Value stays within a range that gives you an acceptable resolution. The formula is most accurate at a SensorValue of 500, with an error of 0.4%. At 100 and 900, the error increases to approximately 1.1% and at 50 and 950, it increases to 2.1%. As a general rule, if the SensorValue is over 900, a lower resistance should be switched in. If the SensorValue is below 100, a higher switch should be toggled. Continue adjusting the switches until you find an acceptable range.\|\|[[1134 0 InternalDiagram.jpg\|link=\|400px]]		\|To optimize the voltage divider to meet your needs, you have to adjust the switchable resistance to match the characteristics of your chosen variable resistor. First, adjust the resistance for no stimuli on your sensor, then apply maximum stimuli and make sure that the Sensor Value stays within a range that gives you an acceptable resolution. The formula is most accurate at a SensorValue of 500, with an error of 0.4%. At 100 and 900, the error increases to approximately 1.1% and at 50 and 950, it increases to 2.1%. As a general rule, if the SensorValue is over 900, a lower resistance should be switched in. If the SensorValue is below 100, a higher switch should be toggled. Continue adjusting the switches until you find an acceptable range.\|\|[[File:1134 0 InternalDiagram.jpg\|link=\|400px]]
	\|}		\|}
	'''Warning:''' It is possible for the 1134 to apply up to 5V to the variable resistor. If the resistor cannot handle this voltage, it can be damaged. The 1134 is a very simple way of measure resistance. When interfacing to sensors with small resistances (like 100 ohm RTDs, for instance), large currents can flow - up to 30 mA. This level of current may cause substantial heating in the variable resistor, distorting the measurement or even possibly permanently damaging it.		'''Warning:''' It is possible for the 1134 to apply up to 5V to the variable resistor. If the resistor cannot handle this voltage, it can be damaged. The 1134 is a very simple way of measure resistance. When interfacing to sensors with small resistances (like 100 ohm RTDs, for instance), large currents can flow - up to 30 mA. This level of current may cause substantial heating in the variable resistor, distorting the measurement or even possibly permanently damaging it.

Mparadis at 16:12, 26 July 2012

2012-07-26T16:12:23Z

← Older revision		Revision as of 16:12, 26 July 2012
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			[[Category:UserGuide]]

	==Getting Started==		==Getting Started==