SuperHeat Psychrometer Two Type K External Probe inputs for Superheat Plus built-in memory stores up to 99 data records Features: • Superheat differential measurements: T1-T2, Air-T1, T1-Dewpoint • Dual Type K external temperature probe inputs (T1, T2) • Simultaneous display of %RH, Temperature and Dew point or Wet Bulb or External Probe Temperatures • Built-in RS-232 interface — uses optional Windows® 95/98/2000/ME/NT/XP compatible software • Retrieve Max/Min readings with data and time plus Average function • Real time clock • Triple display with backlighting • Unique sensor cap design twists to closed position for protection during storage • Switchable °F/°C temperature units with 0.1° resolution • Data Hold freezes current reading on display • Auto power off to save battery life • Complete with two Type K bead wire temperature probes and 4 AAA batteries Specifications: Humidity Temperature (internal) Temperature (external) Dew Point Wet Bulb Dimensions Weight Range 10 to 90%RH -4 to 122°F (-20 to 50°C) -328 to 2498°F (-200 to 1370°C) -90.4 to 122°F (-68.0 to 49.9°C) -6.9 to 122°F (-21.6 to 49.9°C) 9 x 2.2 x 1.7" (230 x 57 x 44mm) 5.3oz (153g) Max Resolution 0.1% RH 0.1° 0.1° Basic Accuracy ±3% RH ±1.8°F or ±1°C ±0.3% or ±1.8°F/±1°C Ordering Information: RH350 ................Superheat Psychrometer RH350-NIST ......RH350 with Calibration Traceable to NIST. TP870 ................Type K Temperature Probe (482°F/250°C) RH350-CAL ........33% and 75% RH calibration reference 589250 ..............RS-232 cable for RH350 www.extech.com Specifications subject to change without notice. 9/27/11 - R1 Copyright © 2007-2011 Extech Instruments Corporation. All rights reserved including the right of reproduction in whole or in part in any form.