WATTS PM-070 Outdoor Sensor Outdoor Air Temperature Instruction Manual
- June 13, 2024
- WATTS
Table of Contents
WATTS PM-070 Outdoor Sensor Outdoor Air Temperature
Product Information
- The Outdoor Sensor PM-070 is a device that provides accurate measurement of the outdoor air temperature. It is designed to be connected to controls and thermostats to measure and display the outdoor temperature.
- It is important to read and follow all safety and use information provided in the manual to ensure the safe and proper operation of the equipment. Failure to do so can result in serious personal injury, property damage, or damage to the equipment.
- The sensor has a built-in thermistor for temperature measurement and comes with wiring options from the back or bottom of the enclosure.
- A test meter capable of measuring up to 5,000 k is required to measure the sensor resistance. The manual provides a resistance table for reference.
- The Outdoor Sensor PM-070 is packaged with literature including the ES-WR-Outdoor_Sensor-070 and IOM-WR-Outdoor_Sensor-070.
Technical Data:
- Packaged weight: Not specified
- Dimensions: Not specified
- Enclosure: Not specified
- Operating range: Not specified
Product Usage Instructions
- To install the Outdoor Sensor PM-070, start by removing the cover by sliding it upwards away from the base.
- If wiring from the back, remove the knock-out in the sensor base. If using a conduit, remove the flexible plug from the base bottom.
- Attach the base to the wall, soffit, or electrical box.
- Next, wire the outdoor sensor and sensor common terminals on your control or thermostat to the appropriate connections on the PM-070.
- Slide the cover back over the base.
To test the sensor, follow these instructions:
- Use a good quality test meter capable of measuring up to 5,000 k to measure the sensor resistance.
- Measure the actual temperature with a good-quality digital thermometer. If a thermometer is not available, you can place a second sensor alongside the one to be tested and compare the readings.
- Do not apply voltage to the sensor at any time as it may result in damage to the sensor.
Refer to the resistance table provided in the manual for temperature- resistance values.
The Outdoor Sensor PM-070 provides accurate measurement of the outdoor air temperature. Many controls and thermostats can connect to the PM-070 to measure and display the outdoor temperature.
WARNING
- Read this Manual BEFORE using this equipment.
- Failure to read and follow all safety and use information can result in death, serious personal injury, property damage, or damage to the equipment.
- Keep this Manual for future reference.
Installation
Outdoor Sensor PM-070
Step One
Mounting The Sensor
NOTE:
The temperature sensor (thermistor) is built into the PM-070 enclosure.
-
The PM-070 can be mounted directly onto a wall and the wiring should enter through the back or bottom
of the enclosure. Do not mount the PM-070 with the conduit knockout facing upwards as rain could enter the enclosure and damage the sensor. -
In order to prevent heat transmitted through the wall from affecting the sensor reading, it may be necessary to install an insulating barrier behind the enclosure.
-
The PM-070 should be mounted on a wall that best represents the heat load on the building (a northern wall for most buildings and a southern fac-ing wall for buildings with large south-facing glass areas). The PM 070 should not be exposed to heat sources such as ventilation or window openings.
-
The PM-070 should be installed at an elevation above the ground that will prevent accidental damage or tampering.
Step Two
Wiring And Testing The Sensor
- Connect 18 AWG or similar wires to the two terminals provided in the enclosure and run the wires from the PM-070 to the control. Do not run the wires parallel to the telephone or power cables. If the sensor wires are located in an area with strong sources of electromagnetic interference (EMI), shielded cable or twisted pair should be used or the wires can be run in a grounded metal conduit. If using shielded cable, the shield wire should be connected to the Com terminal on the control and not to earth ground.
- Follow the sensor testing instructions in this brochure and connect the wires to the control.
- Replace the front cover of the sensor enclosure.
Sensor Testing Instructions
A good quality test meter capable of measuring up to 5,000 kΩ (1 kΩ = 1000Ω) is required to measure the sensor resistance. In addition to this, the actual temperature must be measured with either a good quality digital thermometer, or if a thermometer is not available, a second sensor can be placed alongside the one to be tested and the readings compared.
First measure the temperature using the thermometer and then measure the resistance of the sensor at the control. The wires from the sensor must not be connected to the control while the test is performed. Using the chart on the following page, estimate the temperature measured by the sensor. The sensor and thermometer readings should be close. If the test meter reads a very high resistance, there may be a broken wire, a poor wiring connection, or a defective sensor. If the resistance is very low, the wiring may be shorted, there may be moisture in the sensor or the sensor may be defective. To test for a defective sensor, measure the resistance directly at the sensor location.
Do not apply voltage to a sensor at any time as damage to the sensor may result.
Resistance
TEMPERATURE RESISTANCE| TEMPERATURE RESISTANCE|
TEMPERATURE RESISTANCE
---|---|---
°F| °C| Ω| °F| °C| Ω| °F| °C| Ω
-50| -46| 490,813| 45| 7| 22,763| 140| 60| 2,490
-45| -43| 405,710| 50| 10| 19,900| 145| 63| 2,255
-40| -40| 336,606| 55| 13| 17,436| 150| 66| 2,045
-35| -37| 280,279| 60| 16| 15,311| 155| 68| 1,857
-30| -34| 234,196| 65| 18| 13,474| 160| 71| 1,689
-25| -32| 196,358| 70| 21| 11,883| 165| 74| 1,538
-20| -29| 165,180| 75| 24| 10,501| 170| 77| 1,403
-15| -26| 139,402| 80| 27| 9,299| 175| 79| 1,281
-10| -23| 118,018| 85| 29| 8,250| 180| 82| 1,172
-5| -21| 100,221| 90| 32| 7,334| 185| 85| 1,073
0| -18| 85,362| 95| 35| 6,532| 190| 88| 983
5| 15| 72,918| 100| 38| 5,828| 195| 91| 903
10| -12| 62,465| 105| 41| 5,210| 200| 93| 829
15| -9| 53,658| 110| 43| 4,665| 205| 96| 763
20| -7| 46,218| 115| 46| 4,184| 210| 99| 703
25| -4| 39,913| 120| 49| 3,760| 215| 102| 648
30| -1| 34,558| 125| 52| 3,383| 220| 104| 598
35| 2| 29,996| 130| 54| 3,050| 225| 107| 553
40| 4| 26,099| 135| 57| 2,754| | |
Technical Data
Outdoor Sensor PM-070
Literature| ES-WR-Outdoor_Sensor-070,
IOM-WR-Outdoor_Sensor-070
---|---
Packaged weight| 0.17 lb. (77 g)
Dimensions| 2-5/8″ H x 1-9/16″ W x 1-11/16″ D (67 x 40 x 43 mm)
Enclosure| White PVC plastic, NEMA type 2
Operating range| -60 to 140°F (-51 to 60°C)
Sensor| NTC thermistor, 10 kΩ @ 77°F (25°C ±0.2°C) ß=3892
Limited Warranty
Watts Regulator Co. (the “Company”) warrants each product to be free from defects in material and workmanship under normal usage for a period of one year from the date of original shipment. In the event of such defects within the warranty period, the Company will, at its option, replace or recondition the product without charge.
THE WARRANTY SET FORTH HEREIN IS GIVEN EXPRESSLY AND IS THE ONLY WARRANTY GIVEN BY THE COMPANY WITH RESPECT TO THE PRODUCT. THE COMPANY MAKES NO OTHER WARRANTIES, EXPRESS OR IMPLIED. THE COMPANY HEREBY SPECIFICALLY DISCLAIMS ALL OTHER WARRANTIES, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
The remedy described in the first paragraph of this warranty shall constitute the sole and exclusive remedy for breach of warranty, and the Company shall not be responsible for any incidental, special, or consequential damages, including without limitation, lost profits or the cost of repairing or replacing other property which is damaged if this product does not work properly, other costs resulting from labor charges, delays, vandalism, negligence, fouling caused by foreign material, damage from adverse water conditions, chemical, or any other circumstances over which the Company has no control. This warranty shall be invalidated by any abuse, misuse, misapplication, improper installation, or improper maintenance or alteration of the product.
Some States do not allow limitations on how long an implied warranty lasts, and some States do not allow the exclusion or limitation of incidental or consequential damages. Therefore the above limitations may not apply to you. This Limited Warranty gives you specific legal rights, and you may have other rights that vary from State to State. You should consult applicable state laws to determine your rights. SO FAR AS IS CONSISTENT WITH APPLICABLE STATE LAW, ANY IMPLIED WARRANTIES THAT MAY NOT BE DISCLAIMED, INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, ARE LIMITED IN DURATION TO ONE YEAR FROM THE DATE OF ORIGINAL SHIPMENT.
Contact Information
- USA:
- Canada:
- Latin America:
- T: (52) 55-4122-0138
- Watts.com.
© 2022 Watts.
References
Read User Manual Online (PDF format)
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