Mparadis: Created page with "NOINDEX NOTOC {{#seo:|description=Get started with your RTD Phidget}} ==Part 1: Setup== {{PT1 Deck Sequence}} ==Part 2: Using Your Phidget== ===Connections Overview=== center {| | '''VINT Port''' || This device is controlled through a [https://www.phidgets.com/?tier=2&catid=64&pcid=57 VINT Hub Phidget]. |- | '''EXC+''' || Power line for the RTD (usually red) |- | '''RTD+''' || Positive measurement line for the RTD (choo..."

2026-06-24T19:37:13Z

Created page with "__NOINDEX__ __NOTOC__ {{#seo:|description=Get started with your RTD Phidget}} ==Part 1: Setup== {{PT1 Deck Sequence}} ==Part 2: Using Your Phidget== ===Connections Overview=== 600px|link=|center {| | '''VINT Port''' || This device is controlled through a [https://www.phidgets.com/?tier=2&catid=64&pcid=57 VINT Hub Phidget]. |- | '''EXC+''' || Power line for the RTD (usually red) |- | '''RTD+''' || Positive measurement line for the RTD (choo..."

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__NOINDEX__
__NOTOC__
{{#seo:|description=Get started with your RTD Phidget}}

==Part 1: Setup==
{{PT1 Deck Sequence}}

==Part 2: Using Your Phidget==
===Connections Overview===
[[Image:TMP1202_Wiring.png|600px|link=|center]]

{|
| '''VINT Port''' || This device is controlled through a [https://www.phidgets.com/?tier=2&catid=64&pcid=57 VINT Hub Phidget].
|-
| '''EXC+''' || Power line for the RTD (usually red)
|-
| '''RTD+''' || Positive measurement line for the RTD (choose the same color as EXC+)
|-
| '''RTD-''' || Negative measurement line for the RTD (choose the same color as EXC-)
|-
| '''EXC-''' || Ground line (usually black or silver)
|-
| ||
|}

===Phidget Control Panel===
Use the Phidget Control Panel to explore your device's functionality. Each channel is described below.

[[Image:TMP1202_ControlPanel.png|link=|center]]

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{{UGC-Entry|Resistance Input||
===Resistance Input===
[[Image:TMP1202_ControlPanel_ResInputExample.png|link=|thumb|500px|<center>''Resistance Input application - Phidget Control Panel (Windows)''</center>]]
* The Data Interval, Change Trigger, and Wire Setup can be configured (see Part 4 for details).
* The probe resistance in ohms is displayed on the right.
}}

{{UGC-Entry|RTD Input||
[[Image:TMP1202_ControlPanel_RTDInputExample.png|link=|thumb|500px|<center>''RTD Input application - Phidget Control Panel (Windows)''</center>]]
===RTD Input===
* The Data Interval, Change Trigger, Probe Type and Wire Setup can be configured (see Part 4 for details).
* The probe temperature in degrees Celsius is displayed on the right.

}}

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==Part 4: Other Considerations ==

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{{UGC-Entry|Wiring Instructions||
===Two-Wire Mode===

[[Image:TMP1200-2wire.jpg|link=|350px|right]]

This is the simplest wiring setup for an RTD, but also the least accurate because the resistance of the leads are not taken into account. To connect a 2-wire RTD to the RTD Phidget, connect one wire to the RTD+ terminal, and the other to the RTD- terminal. Then connect the EXC+ terminal to the RTD+ terminal and the EXC- to the RTD- terminal with two short wires.

In your program, set {{Code|RTDWireSetup}} to 2-wire mode. In the {{Phidget22 API}} select the TMP1200 and your programming language of choice to see exact naming conventions.

===Three-Wire Mode===

[[Image:TMP1200-3wire.jpg|link=|350px|right]]

In a three-wire RTD, the extra wire is added to measure the resistance of one of the leads. This calculation assumes that both leads have the same resistance. Your RTD should have two wires that share a color; connect one of these wires to the RTD- terminal and the other to the EXC- terminal. The differently colored wire connects to the RTD+ terminal. Then connect the EXC+ terminal to the RTD+ terminal with a short wire.

In your program, set {{Code|RTDWireSetup}} to 3-wire mode. In the {{Phidget22 API}} select the TMP1200 and your programming language of choice to see exact naming conventions.

===Four-Wire Mode===

[[Image:TMP1200-4wire.jpg|link=|350px|right]]

A four-wire RTD is normally used in precision measurement, when the assumption that both leads have the same resistance is not accurate enough. Unfortunately the RTD Phidget does not support this particular feature of four-wire RTDs. It does support the use of four-wire RTDs using the same assumption as three-wire mode. To connect a four-wire RTD, simply connect one pair of same-colored wires to the RTD+ and EXC+ terminals, and the other pair to the RTD- and EXC- terminals.

In your program, set {{Code|RTDWireSetup}} to 4-wire mode. In the {{Phidget22 API}} select the TMP1200 and your programming language of choice to see exact naming conventions.

}}
{{UGC-Entry|Line Resistance Measurement||
In three and four wire modes, this device will measure the line resistance every 5 minutes. This measurement will cause a delay in measurement for data intervals of less than 500ms. To force the line resistance to be recalculated, you must close and re-open the device.
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TMP1202 Quick Start Guide - Revision history