Testo 0554 0660 Salt solutions for checking RH probe perfromance, 11.3% and 75.3% RH, w/ adapter for humidity probe

Testo saline pots for control and humidity adjustment of humidity probes, 11.3 %RH and 75.3 %RH with adapter for humidity probe.

The control and adjust ment set is used to check and adjust humid ity probes. The set consists of two spe cial con tain ers. Air mix tures with defined relative humidities are produced with the aid of different salt solutions.

As part of the accreditation as a DAkkS calibration laboratory for the parameters "Relative humidity" and "Dew point" the val ues for the rel a tive humidity for saturated lithium chloride (LiCl) and sodium chloride (NaCL) solutions were newly specified at testo.

LiCl 11.3% RH, NaCl 75.3% RH at rated temperature +25 °C

These improved values also apply to all control and adjustment sets already delivered instead of the values specified up to now

A control container with a defined humidity of 33%RH is additionally available. It is used to

• bring the humidity probes to a definedinitial state before checking and adjusting
• ensure that the humidity sensors or probes do not dry out or become too humidduring storage

The humidity probe range from testo was converted to modified adjust mentpoints in 1995.

The quality of the adjustment of older probes does not change with the new control and adjustment set. Thevalues of ± 2%RH still apply.