11
Attaching ferrite sleeve
for 2 wire technology
Max. load 50
Ω
with displays H1, H3, H7
Installing a digital display
- Remove housing cover from
hygrotest 600
.
Disconnect electrical supply.
- In displays H1, H7 move right slide switch (SW11)
from the bottom position to the upper
OFF
position
(Fig. 1). In displays H2, H3
,
H4, H5, H6 switch
remains on
ON
position.
- Remove 4 screws from the instrument board (Fig.1).
- Attach cable connector (Fig. 2) of display (watch
out for guide pin) to connection socket (Fig. 1).
- Screw in spacing pins on instrument board (Fig. 3).
- Mount display board with screws on spacing pins.
- Perform electrical connection.
- Screw on new housing cover (with window)
Slide
switch
Screws
Cable
connector
Spacing pins
Fig. 1
Fig. 3
Fig. 2
Connection socket
for
scaling adapter or
testo 400/650
instrument for
1-point adjustment
Note
To comply to EMC rules, all outside cables have to
carry ferrite sleeves. These sleeves are delivered with
the instrument. Please insert the analog output signal
cable of each channel through one of the sleeves (out-
side the housing).
