Circular Drying Time Recorder measures RH and temperature.

Press Release Summary:

Featuring microprocessor-controlled crystal timing regulation, Ultracycle RHT is designed to control motor so that shaft-driven 3/8 in. teflon stylus will complete 1 rotation in period which can be programmed from 1 min to 99 hours, 59 min. Status and Time event count-up is displayed on 16-character LCD. Ambient temperature sensor is switchable to °F or °C with Min, Max, and Current Temperature displayed. Conforming to ASTM D 5895, recorder features auto stop upon completion of cycle time.

Original Press Release:

Introducing the New Ultracycle RHT

Gardco Electronic Ultracycle RHT Circular Drying Time Recorder with relative humidity and temperature measurement

This unit has been designed to control a motor so that its shaft driven 3/8" teflon stylus will complete one rotation in a period which can be programmed from 1 minute to 99 hours, 59 minutes. The temperature can be displayed in Centigrade or Fahrenheit.


Conforms to ASTM D 5895

Microprocessor controlled crystal timing regulation

Vastly improved tracking definition

Status and Time event count-up displayed on a 16 character LCD

Ambient temperature sensor switchable °F or °C with min., max. & current temperature displayed

Relative humidity with min, max

Auto stop upon completion of time cycle

Power failure indicator

100-240V 50/60Hz

Item #DT-5022

Instructions For Use

Attach the arm and ball assembly to the motor shaft by way of the hex screw. Once tightened to the desired position do not forcefully move the arm and ball position without loosening as this can cause damage for the gearbox assembly.

Apply the coating to your test panel using a Gardco Microm Film applicator or equivalent wet film applicator. Immediately place the Drying time recorder on your test panel and lower the clean 3/8 in. weighted Teflon stylus gently into position. Select the desired drying time and the stylus will then begin to be drawn along the test panel. After the selected time cycle is complete the Drying time recorder will automatically stop.

Evaluate the test panel using the supplied Time Template to determine the stages of drying time. Place the clear Time Template over the circular area scribed by stylus and note appropriate scale number of minutes or hours required for the film to cure, the character of the track by the 3/8 in. Teflon ball stylus relate to the drying of the film (Reference ASTM D 5895). Record the results and if desired, record the temperature, humidity and the wet film thickness as these factors are important in considering the drying time of films.

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