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Two-Speed Hygrothermograph

Spring wound- no batteries required!

  Record temperature and humidity on 1 or 7 day rotation

Made of corrosion- resistant acrylic for indoor or sheltered outdoor use. Spring winding keeps chart running for eight days. Even when the motor begins to run down, a steady chart speed is maintained. Includes one 1-day gear and one 7-day gear, two felt-tipped pens (red and blue), and one 7-day rotation chart.

Click below to download Acrobat (.pdf) file of:
Two-Speed Hygrothermograph product bulletin
Two-Speed Hygrothermograph manual

HumidityRange 5 to 90% RH
HumidityAccuracy ±3% from 10 to 90% RH;
±5% from 5 to 10% RH
HumidityChart range 0 to 100% RH
HumidityChart graduations 1% RH
TemperatureRange -10 to 50°C / 14 to 122°F
TemperatureAccuracy ±1°C / ±1.8°F
TemperatureChart graduations 1°C or 2 °F
Chart size 6.6"H x 11.5"L (16.8 cm H x 29.2 cm L)
Chart rotation 1 day (26 hr) or 7 day (172 hr)
Power spring wound
Dimensions 13.3" x 11.5" x 5.1" (33.8 x 29.2 x 13 cm)
Shipping weight 9 lbs (4 kg)


click on image to enlarge

Model # Description Suggested List Price Qty  
WD-37250-10 Two-speed, spring wound hygrothermograph $1078.50
Accessories
WD-08368-10 Chart paper, F, 1 day rotation, 100/pack
*DISCONTINUED* DIRECT REPLACEMENT IS WD-08368-11
$15.00
WD-08368-20 Chart paper, F, 7 day rotation, 100/pack
*DISCONTINUED* DIRECT REPLACEMENT IS WD-08368-21
$15.00
WD-08368-30 Chart paper, C, 1 day rotation, 100/pack
*DISCONTINUED* DIRECT REPLACEMENT IS WD-08368-31
$15.00
WD-08368-40 Chart paper, C, 7 day rotation, 100/pack
*DISCONTINUED* DIRECT REPLACEMENT IS WD-08368-41
$15.00
WD-08368-75 Blue felt tip pens, 6/pack $33.50
WD-08368-80 Red felt tip pens, 6/pack $45.05

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OAKTON Instruments: setting the standard, again and again
OAKTON Instruments P.O. Box 5136, Vernon Hills, Il USA 60061 info@4oakton.com