Winland WI-MTA2

The Winland MTA-2 is a mechanical dual-output temperature sensing device. It offers two (2) Normally Open outputs that can be connected to a wired alarm input. With two (2) separate temperature setpoints, one for high temperature, and one for low temperature, the MTA-2 can monitor for extremes at either end of the temperature scale. It does not require power to operate.

The MTA-2 can provide an alert for temperatures as low as 20℉ (6.7℃) and as high as 110℉ (43.3℃). It can display temperatures from 0℉ - 120℉ (-17.8℃ - 48.9℃). It has an accuracy rating of ±3℉ (±1.7℃). It is not meant to be installed inside a freezer or cooler, and should be kept out of any type of condensing humidity environment. The Winland EA200 or Winland EA400 with appropriate temperature probes should be used for those applications.

If use with a wireless system is desired, the outputs of the Winland MTA-2 can be tied to a wireless sensor that provides a normally open wired input such as the Honeywell 5817CBXT, or the DSC PG9312. In addition to a wireless transmitter with an wired input available, the MTA-2 can also be connected using a wired to wireless converter such as the DSC PG9WLSHW8 which will work with the Qolsys IQ Panel 4 systems, the Honeywell Home PROSIXC2W, which will work with the Resideo and Honeywell Home ProSeries panels (but not the Lyric or LynxTouch panels), and the 2GIG TAKE1e-345, which will work with the 2GIG Edge.

When monitoring temperature, it is usually best to install monitoring devices close to the thermostats that will control the temperature in a specific area. If there are two (2) thermostats, then there should be two (2) monitoring devices. When choosing where to mount it, the MTA-2 can be mounted on a wall or any other sturdy vertical surface. Make sure to avoid mounting near windows, doors, or heat sources that could affect the accuracy of the temperature sensor. When monitoring against a freeze condition, be sure to mount at least one MTA-2 on each level of the building to be monitored.

The Winland MTA-2 is completely mechanical. It is the movement of the temperature display needle that causes an alarm when one of the temperature setpoints is reached. This is why the device does not require power. Open the case and install the backplate to the wall or other surface where the MTA-2 will be mounted. On the exposed rear of the device, you will find the wiring terminals and the temperature limit posts.

There is both a Low and High temperature limit post on the back of the device. Its setting is controlled by a locknut. Using a 5/16" nut driver or wrench, loosen each post and move them to the desired temperature monitoring setpoint. It is recommended to keep at least a 10-degree gap between the low and the high setpoint limits. Once each setpoint is at the desired temperature, tighten the locknut again. If you only want to monitor for either high or low temperature, simply set the unused post to its furthest limit and don't connect a wire to its corresponding terminal.

To manually test the Winland MTA-2, once the wiring has been connected for the alarm output temporarily loosen the locknut of one of the limit posts and slide the post toward the temperature indicator until it makes contact, then tighten the locknut again. If installed correctly, this should cause an alarm on the system. Once this test is completed, return the limit post to its regular position and repeat this test with the other temperature limit post, if used. Be sure your system is on test if it is currently being monitored.

Specifications:

• Power Requirements: No power required
• Alarm Use: 20℉ - 110℉ (+6.7℃ - +43.3℃)
• Display Use: 0℉ - 120℉ (-17.8℃ - +48.9℃)
• Low Limit Adjust Range: 20℉ - 100℉ (-6.7℃ - +37.8℃) Non-Condensing Environment Only
• High Limit Adjust Range: 30℉ - 110℉ (-1.1℃ - +43.3℃) Non-Condensing Environment Only
• Minimum Temp Span: 10° Recommended distance between high and low setpoints
• Temperature Accuracy: ±3℉ (±1.7℃)
• Temperature Response Time: TC = 14 Minutes
• Sensing Element: Bimetallic Coil
• Outputs: Gold plated N.O. dry contacts (NOT for High Voltage)
• Contact Output Rating: 12VDC @ 50mA
• Weight: 6 oz (0.17kg)
• Dimensions: 6.5" x 3.25" x 1" (11.4cm x 8.3cm x 2.5cm)
• Mounting: Surface Mount (Keyhole Slot)
• Case Material: ABS Plastic