Press Add another to claim a new device. Choosing your Mounting Location As MT sensors rely on a gateway for connectivity to the dashboard, make sure that a working compatible gateway is in range of the sensor when choosing a mounting location.
Some examples of ideal mounting locations: On a wall for ambient temperature and humidity readings. Inside a rack to monitor the rack temperature. The instructions are as follows: 1.
In order to mount the sensor on different locations, there are three options a. Screws - The mounting plate can be directly screwed onto the wall. Testing the Connection Once the device is mounted at the desired location and added to a network with a compatible gateway, press the general purpose button on the top of the sensor to wake it up and sync with the nearest gateway.
The RSSI value will still be reported on the dashboard. Please relocate the sensor closer to the gateway for better connection quality. Product Overview Physical Specifications Dimensions Note: To conserve battery life, the LEDs don't always remain on. General Purpose Button The MT10 has a general purpose button on the top which allows you to wake up the sensor and test if it is able to connect to a gateway. Factory Reset Button Next to the battery compartment, there is a pinhole button to factory reset the sensor.
Support and Additional Information If issues are encountered with device installation or if additional help is required, contact Meraki Support by logging in and opening a case via the Get Help section. User Guide. Wifi 5 APs - MR Wall-mount backplate 2x Torx mounting screws Torx driver not included 1x Torx security screw Torx driver not included 2x drywall anchors 1x magnet 1x VHB tape.
Temperature Sensor Solution. Installation Guide. Install Type Quick Links. What's Included - MF Solution. MF Device. Temperature Probe. Wiring Instructions. Additional Wiring. One Sensor Install. Multi-Sensor Install. Sensor 1 of the chain must be wired as follows. Protect Your Fleet Today! The best way to get a representative centerline measurement is by inserting the thermowell in an elbow facing into the flow position 1 in the figure below.
If the thermowell is facing away from the flow, swirling and separation from the elbow as can create a noisier and less representative measurement position 2 in figure. An angled insertion position 3 in figure can increase the immersion length over a perpendicular insertion position 4 in figure but the insertion lengths shown for both are too short unless the tip extends past the centerline.
A swaged or stepped thermowell can reduce the immersion length requirement by reducing the diameter near the tip. The distance of the thermowell in a pipeline from a heat exchanger, static mixer, or desuperheater outlet should be optimized to reduce the transportation delay but minimize noise from poor mixing or two phase flow.
Generally 25 pipe diameters are sufficient to ensure adequate mixing from turbulence if there is a single phase, turbulent flow, and no great differences in the viscosity of streams being combined.
Two phases exist for desuperheaters, split ranged transitions from cooling water to steam in jackets, the use of lime ammonia as a reagent for pH control due to flashing and whenever slurries are involved. The transportation delay will increase with distance adding more dead time to the loop.
Consequently, there is a compromise between getting enough mixing to achieve a representative low noise measurement and creating too much additional dead time. Insight : Generally a distance of 25 pipe diameters between the equipment outlet and the temperature sensor is sufficient to provide a relatively uniform temperature profile of a single phase fluid.
The presence of different phases e. For desuperheaters, the distance from the outlet to the thermowell depends upon the performance of the desuperheater, process conditions, and the steam velocity.
To give a feel for the situation there are some simple rules of thumb for the length of piping from the desuperheater to the first elbow known as straight piping length SPL and the total piping length from the desuperheater outlet to the sensor known as sensor total length TSL.
The choice of thermowell length, location, and construction determines whether the temperature measurement is representative of the process, how much process noise is seen, how much delay and error is introduced, and the potential failure rate. This post provides general guidance. Actual SPL and TSL values depend on the quantity of water required with respect to the steam flow rate, the temperature differential between water and steam, the water temperature, pipe diameter, steam velocity, model, type, etc.
Water tends to fall out and run down the pipe to a drain. When this happens the water no longer cools the steam and the system thinks it needs to add more water, which compounds the problem.
Problems can also include pipe wall erosion and high thermal stress gradients in the pipe wall i. The stem of a thermowell is the part that is inserted into the process stream. Stems can be tapered, straight, or stepped. The performance of a thermowell varies with its stem design. In general, a tapered or stepped stem provides a faster response, creates less pressure drop, and is less susceptible to conduction error and vibration failure.
If the thicknesses of the thermowell walls and the fit of the sensing element are identical, thermowells with straight stems have the slowest time response because they possess the most material at the tip largest diameter.
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