tekmar 085 User Manual

- Data Brochure

10k Solar Sensor 085

D 085

06/10

Overview

Waterproof

• Corrosion Resistant

• UV Resistant Wire

•

The tekmar Solar Sensor 085 has a stainless steel head and silicone jacketed wire, ideal for use as an immersion well sensor in a solar collector.

Operating range -40 to 356°F (-40 to 180°C)

•

0.24 in (6 mm) OD for immersion well installation

• 5 ft (1.5 m) wire length

•

Sensor Wiring

Caution: Do not run sensor wires parallel to telephone or power cables. If the sensor wires are located in an area with strong sources of electromagnetic interference, shielded cable or twisted pair should be used or the wires can be run in a grounded metal conduit.

Installation

Controller effectiveness depends heavily on proper installation of temperature sensors. The 085 sensor should always be measuring the hottest part of the collectors which is normally the flow output of the last collector in a string.

The Solar Sensor 085 was specifically designed to mount in a 6.2 mm ID temperature sleeve or well provided by most collector manufacturers.

Sensor well

6.2 mm ID

Sensor wiring can be extended up to 520’ (158 m) using

• 18 AWG wire.

Wire splices should be properly soldered and protected

• in an accessible waterproof junction box.

If a temperature well isn’t available, the Solar Sensor 085 can be strapped directly to the pipe using a stainless steel clamp (not provided).

Insulation should be placed around the sensor in this case to reduce the effects of air currents on the temperature measurement. Thermal paste is recommended to improve thermal contact with the sensor.

Stainless steel clamp

Insulation around sensor & pipe

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.

Temperature vs. Resistance Table

Temperature Resistance

°F °C

-40° -40° 336,479

-31° -35° 242,681

-22° -30° 176,974

-13° -25° 130,421

-4° -20° 97,081 5° -15° 72,957

14° -10° 55,329 23° -5° 42,327 32° 0° 32,650

41° 5° 25,392 50° 10° 19,901 59° 15° 15,712

Temperature Resistance

°F °C

68° 20° 12,493 77° 25° 10,000 86° 30° 8,057

95° 35° 6,531 104° 40° 5,326 113° 45° 4,368 122° 50° 3,602 131° 55° 2,986 140° 60° 2,488 149° 65° 2,083 158° 70° 1,752 167° 75° 1,480

Temperature Resistance

°F °C

176° 80° 1,255 185° 85° 1,070 194° 90° 915 203° 95° 786 212° 100° 678 221° 105° 587 230° 110° 510 239° 115° 445 248° 120° 389 257° 125° 341 266° 130° 301 275° 135° 265

Temperature Resistance

°F °C

284° 140° 235 293° 145° 208 302° 150° 186

311° 155° 166 320° 160° 148 329° 165.° 133 338° 170° 119

347° 175° 107 356° 180° 97 365° 185° 87

374° 190° 79 383° 195° 72

Note: This sensor is capable of measuring temperatures beyond the range of some controls. A higher than measureable temperature is displayed as a short circuit while a lower than measurable temperature is displayed as an open circuit. Compare the sensor’s resistance with the table above at these extremes to determine the true measured temperature.

Technical Data

Literature – D 085 Approvals – CSA C US Operating Range – -40°F to 356°F (-40°C to 180°C) Dimensions – 0.24” (6 mm) O.D., 1.77” (45 mm) long with 5’ (1.5 m) cable length Sensor – NTC thermistor, 10 kΩ @ 77°F (25°C ± 0.2°C), ß = 3892 Materials – SS304 metal tube, black silicone rubber insulated, 2 conductor cable Packaged Weight – 0.12 lb (55 g)

Limited Warranty and Product Return Procedure

Limited Warranty The liability of tekmar under this warranty is limited. The

Purchaser, by taking receipt of any tekmar product (“Product”), acknowledges the terms of the Limited Warranty in effect at the time of such Product sale and acknowledges that it has read and understands same.

The tekmar Limited Warranty to the Purchaser on the Products sold hereunder is a manufacturer’s pass-through warranty which the Purchaser is authorized to pass through to its customers. Under the Limited Warranty, each tekmar Product is warranted against defects in workmanship and materials if the Product is installed and used in compliance with tekmar’s instructions, ordinary wear and tear excepted. The pass-through warranty period is for a period of twenty-four (24) months from the production date if the Product is not installed during that period, or twelve (12) months from the documented date of installation if installed within twenty-four (24) months from the production date.

The liability of tekmar under the Limited Warranty shall be limited to, at tekmar’s sole discretion: the cost of parts and labor provided by tekmar to repair defects in materials and/or workmanship of the defective product; or to the exchange of the defective product for a warranty replacement product; or to the granting of credit limited to the original cost of the defective product, and such repair, exchange or credit shall be the sole remedy available from tekmar, and, without limiting the foregoing in any way, tekmar is not responsible, in contract, tort or strict product liability, for any other losses, costs, expenses, inconveniences, or damages, whether direct, indirect, special, secondary, incidental or consequential, arising from ownership or use of the product, or from defects in workmanship or materials, including any liability for fundamental breach of contract.

The pass-through Limited Warranty applies only to those defective Products returned to tekmar during the warranty period. This Limited Warranty does not cover the cost of the parts or labor to remove or transport the defective Product, or to reinstall the repaired or replacement Product, all such costs and expenses being subject to Purchaser’s agreement and warranty with its customers.

Any representations or warranties about the Products made by Purchaser to its customers which are different from or in excess of the tekmar Limited Warranty are

the Purchaser’s sole responsibility and obligation. Purchaser shall indemnify and hold tekmar harmless from and against any and all claims, liabilities and damages of any kind or nature which arise out of or are related to any such representations or warranties by Purchaser to its customers.

The pass-through Limited Warranty does not apply if the returned Product has been damaged by negligence by persons other than tekmar, accident, fire, Act of God, abuse or misuse; or has been damaged by modifications, alterations or attachments made subsequent to purchase which have not been authorized by tekmar; or if the Product was not installed in compliance with tekmar’s instructions and/or the local codes and ordinances; or if due to defective installation of the Product; or if the Product was not used in compliance with tekmar’s instructions.

THIS WARRANTY IS IN LIEU OF ALL OTHER WARRANTIES, EXPRESS OR IMPLIED, WHICH THE GOVERNING LAW ALLOWS PARTIES TO CONTRACTUALLY EXCLUDE, INCLUDING, WITHOUT LIMITATION, IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, DURABILITY OR DESCRIPTION OF THE PRODUCT, ITS NON-INFRINGEMENT OF ANY RELEVANT PATENTS OR TRADEMARKS, AND ITS COMPLIANCE WITH OR NONVIOLATION OF ANY APPLICABLE ENVIRONMENTAL, HEALTH OR SAFETY LEGISLATION; THE TERM OF ANY OTHER WARRANTY NOT HEREBY CONTRACTUALLY EXCLUDED IS LIMITED SUCH THAT IT SHALL NOT EXTEND BEYOND TWENTY-FOUR (24) MONTHS FROM THE PRODUCTION DATE, TO THE EXTENT THAT SUCH LIMITATION IS ALLOWED BY THE GOVERNING LAW.

Product Warranty Return Procedure All Products that are believed to have defects in workmanship or materials must be returned, together with a written description of the defect, to the tekmar Representative assigned to the territory in which such Product is located. If tekmar receives an inquiry from someone other than a tekmar Representative, including an inquiry from Purchaser (if not a tekmar Representative) or Purchaser’s customers, regarding a potential warranty claim, tekmar’s sole obligation shall be to provide the address and other contact information regarding the appropriate Representative.

tekmar Control Systems Ltd., Canada tekmar Control Systems, Inc., U.S.A.

Head Office: 5100 Silver Star Road Vernon, B.C. Canada V1B 3K4 (250) 545-7749 Fax. (250) 545-0650 Web Site: www.tekmarcontrols.com

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All specifications are subject to change without notice.

Printed in Canada. D 085 - 06/10.