DigiTempR
Digital Thermometer
(Standard Version)
Instruction Manual
DigiTempR Digital Thermometer
Instruction Manual
Page 1
The DigiTemp battery-powered digital thermometer is designed to suit a wide range of industrial applications which demand accurate measurement of temperature. The DigiTemp is housed in a robust stainless steel case, sealed to IP67 rating, which is suitable for hostile industrial environments without additional protection. Powered by two standard AA alkaline cells, the DigiTemp gives two years of continuous maintenance-free operation.
Installation
Ambient conditions : Best measurement accuracy will be achieved if the DigiTemp is operated close to the calibration temperature of 20ºC (68ºF). Avoid siting the DigiTemp where there is extreme vibration.
Location and mounting : Thermometers fitted with a rigid stem of 6.35 or 12.7mm diameter are intended to be supported by means of a fixed or sliding gland. Do not overtighten the gland nut. Instruments which are fitted with flexible or semi-rigid mineral- ly-insulated stems are generally supplied with a three-hole mounting flange which allows the thermometer to be either surface or panel-mounted. The fixing centres of the flanges are as indicated in Figure 1 below.
Figure 1 - Mounting details for panel (front flange) and surface (back flange) versions.
Immersion length : For accurate temperature measurement it is essential that the sensitive portion of the stem (generally the section 19mm from the tip of the stem) is fully immersed in the medium to be measured. It is recommended that the immersion length should be at least three times the length of the sensitive portion of the stem.
Process conditions and thermowells : Ensure that the stem material of the DigiTemp (generally stainless steel, 316 grade) is compatible with any chemically aggressive medium that it may come into contact with. If the process medium is under pressure (3.5 bar or greater), for safety reasons the stem of the DigiTemp should be protected by a thermowell ('pocket') designed to suit the process conditions. A wide range of thermowells are available from British Rototherm, please contact the Sales Office for advice.
Display units
The display reading may be given in degrees Celsius or Fahrenheit according to the position of the internal jumper which is shown in Figure 3. Dials marked with either °C or °F are available, part numbers DT0039-C (°C) and DT0040-C (°F).
Over and under-range indications
Should the measured temperature lie below or above the range of the DigiTemp the display will read either Undr or OvEr. The temperature range of the instrument is shown on the label attached to the top of the case.
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