Vantage Pro2 - 6470 - Temperature Probe, Multi-Purpose Specification Sheets

(510) 732-9229 FAX (510) 670-0589 sa les@davisnet .com www.davisnet .com ? ? ? Stainless Steel Temperature Probe with S6470 (Rev. J, 5/21/13)3465 Diablo Ave., Hayward, CA 94545-27783465 Diablo Ave., Hayward, CA 94545-2778 USA® DVantage Pro2TM Accessories6470Two-Wire TerminationFor the Wireless Leaf & Soil Moisture/Temperature Station (# 6345)The probe is designed to measure soil temperature in order to provide temperature compensation for the Watermark Soil Moisture Sensor.The sensor is a precision thermistor which produces a resistance change proportional to temperature. It is epoxy-encapsulated in a 316 alloy stainless steel body with vinyl strain relief. The 22 AWG direct burial cable is resistant to damage from pests, moisture or UV.To ensure accurate readings when measuring outdoor air temperature, the Multi-Purpose Temperature Probe should be shielded from direct sunlight and other sources of reflected or radiated heat. We recommend the use of the Radiation Shield (#7714) for this purpose.Genera lSensor Type (see Charts) . . . . . . . . . . . . . . . . . . . . . . . . Precision thermistorTime ConstantIn Still Air . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100 secondsIn Liquid. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 secondsAttached Cable Length . . . . . . . . . . . . . . . . . . . . . . . . . . 15' (4.6 m)Cable Type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 AWG direct burial cable, wires stripped and tinnedRecommended Maximum Cable Length (see Note 1)24 AWG Cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 800' (242 m)Note: There is no absolute maximum cable length. Increasing the cable length above the recommended maximum length causes an increased measure-ment error at a rate of approximately +0.24°F (+0.13°C) per 100' (30 m) of 22 AWG cable. We recommend the use of 18 AWG fully waterproof with VF insulation and 3M Scotchpak or Duraseal heat shrink splice connector. Housing Material . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 316 alloy stainless steel housing with vinyl strain reliefHousing Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.312" diameter x 2.5" long (8 mm diameter x 64 mm long)Weight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.5 oz. (128 g)Sensor OutputResolution and Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1°F or 1°C (user-selectable)Historical Graph Data and Alarms: 1°F or 1°C (user-selectable)Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -40° to +150°F (-40° to +65°C)Sensor Accuracy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±1°F (±0.5°C) typicalUpdate Interval . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77 to 90 secondsInput /Output Connect ionsBlack. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . CommonWhite . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Temperature (variable resistance to common)12 Vantage Pro2TM AccessoriesChartsFigure 1 shows the resistance of the sensor. Figure 2shows the cable-induced error of an un-calibrated sensor using 100' (30 m) of cable.Figure 3 shows the accuracy of F and C temperatures.Package DimensionsProduct #Package Dimensions(Length x Width x Height)Package Weight UPC Codes6470 5.50" x 4.50" x 1.50" (140 mm x 115 mm x 38 mm) 6.0 oz. (.2 kg) 011698 00241 2Figure 2: Cable-Induced Temperature Figure 1: Sensor Resistance ReadingsFigure 3(510) 732-9229 FAX (510) 670-0589 sa les@davisnet .com www.davisnet .com3465 Diablo Ave., Hayward, CA 94545-27783465 Diablo Ave., Hayward, CA 94545-2778 USA® ? ? ? Stainless Steel Temperature Probe with Two-Wire Termination