GANN HYDROMETTE HB 30, Operating Instructions Manual

Page: 48 / 65

47
Measure
Turn selector switch (4) to position »M«. Insert the plug of the connection cable into the
socket (2) and engage by gently turning clockwise. Follow the reverse procedure to remove
the plug.
Do not apply force and do not stretch the cable.
Immediately after pressing the measuring key, the reading is displayed in °C. Depending on
the temperature »jump«, the measurement value is instantly displayed or within a few sec-
onds. Fluctuations in the last display digit (1/10 °C) in the range ± 0.2 °C are completely
normal. Even the second digit (1 °C) may jump backwards and forwards on account of the
sensitivity of the sensor and its extremely quick reactivity. The damping of the display was in-
tentionally omitted.
During the measurement the measuring sensor should be held only at its lower
end (cable insert). For accurate readings the sensor tip must have adopted the
ambient temperature. With measurements of more than 5 seconds' duration in the
immediate vicinity of hot or cold parts (waste gas pipe, radiant heater or refrigera-
tion equipment)
the measurement value may be falsified.
After waiting for about 10 - 15 minutes, as dictated by the temperature difference, a new
measure-ment can be taken (temperature equalization between the sensor housing and the
ambient temperature). The accuracy of the measurement depends on the temperature uni-
formity of the measurement device, measurement sensor (all parts e.g. at room temperature)
as well as on the relevant degree of emission of the measurement object.