User Manual

Design and description

Range A:

In this range, temperature and humidity can be combined as you please, without resulting in

any significant condensation. If there are extreme ambient conditions, the working range may

be restricted.

Range B:

If the specified range is exceeded upwards, e.g. 80 % rh at 60°C, the hot steam fed in will im-

mediately condense, due to the dew-point, at the coldest point in the appliance.

Range C:

At low temperatures and low relative air humidity, the effective range is heavily dependent on

the degree of humidity of the chamber load.

2.4 Basic equipment

► Low-noise, long-life and energy-saving Peltier cooling and heating technology (in heat-

ing mode, part of the energy required is extracted from the surroundings = heat pump

principle)

► Electronic fuzzy-supported PID process controller with permanent performance adjust-

ments and time-saving self-diagnosis system to quickly locate errors (see pages 38 and 45)

► Alphanumeric text display

► Control of the appliance and logging the actual values with a preformatted empty

MEMoryCard XL (storage capacity 32 kByte, reprogrammable for up to 40 ramp segments

and in addition 135 hours of log memory for temperature and humidity with a scanning

interval of 1 minute)

► Programme sequence control for up to 40 ramp segments

► Integrated week time switch with group function (e.g. all working days)

► Retracting push-turn control for simple operation

► Optical alarm display

► Integrated horn as alarm if limit values are crossed, as acoustic signal when programme

ends and to confirm input (button click)

► Digital monitoring control for overtemperature, undertemperature and automatic tem-

perature monitor (ASF)

► Two separate Pt100 temperature sensors DIN class A in a 4-wire circuit for control and

monitoring

► Parallel printer port (PCL3-compatible)

► USB interface for computer-based temperature control programmes and to read out the

controller’s internal log memory

► MEMMERT software "Celsius" for remote control of the chamber via computer (see page

37) and to read out the internal controller log memory

► As an optional accessory, external card reader for MEMory-Card XL for connection to the

PC-USB interface, printer cable (parallel, shielded)- 25-pin

► Language setting (German, English, French, Spanish, Italian)

► Capacitive humidity sensor

► Active humidity control guarantees that setpoint humidity is quickly achieved, with short

recovery times, and avoiding condensation formation