TEAK30
TERMINAL UNIT FOR HANDHELD USE
User's Manual
4
1. Introduction and Taking into Use
This document instructs you on how to use the display unit model TEA for
AK50
moisture meter family.
Refer first to your existing
AK50
operating manuals for other instrument features not mentioned in this
document. The current product revision is K30 which supersedes the earlier versions.
General
M
odel
TEA
is a handheld terminal for managing your
AK50
moisture meters and its derivatives as also
for many other products made by Visilab Signal Technologies. It can be used with many other
products requiring a simple ANSI terminal. It is designed for handheld measurements operating with
external power. TEAK30 can be used either as an analog interface, connected to a DC analog signal
0..10V, or as a digital terminal connected to the serial port RS232.
The moisture meter operates in Keyboard mode all the time when this terminal is used as a digital
terminal. When used as an analog interface, it does not matter since it is not connected to the serial
port at all. When acting as a terminal, all equipment settings can be done with it, the autotimer can
be started manually, the resulting data series can be analyzed statistically and edited in the menu
system as described in the model D manuals. In these operations, the display unit works as a plain
terminal with no intelligence of its own; most of the work is done by the moisture meter itself. The display
unit can be used connected to either RS232 with a standard D9 male connector and a three-wire
cable. The terminal unit can be used for other simple terminal (ANSI) applications where plain text
information is to be received and some key presses are to be sent to the device. Note then the pin
ordering of the RS232 connector which depends on it being a DTE or a DCE equipment (receive and
transmit lines interchanged). If your system requires a switched pin ordering, open the cable
connector box and swap the wires with a soldering iron.
By default, the cables are preset at factory and connected to the power supply unit -PS. No
modifications are necessary. The terminal is powered as soon as the -PS is turned on. It can start
operation as an analog interface right away. If operation as a terminal is required, connect the loose
RS232 plug to the RS232/485 connector in the -PS.
When operating handheld in paper mills near paper machines or like, there is always the risk of losing
the instrumentation. That risk exists when measuring near fast rotating rollers in difficult conditions. The
moisture meter, parts of it or the terminal unit may be dropped to the web or it may become
entangled into the web or machinery. Visilab Signal Technologies takes no responsibility of lost
equipment or damaged paper machines. The responsibility of working at such positions is fully on the
user's side. One should have proper insurances before operating any handheld instruments there and
should always have extra caution. An assistant is recommended for increased safety.
Installation
For installing and configuring the
TEAK30
successfully, the following items should be available:
1. User's manual (this) and other manuals enclosed with the moisture meter model
D
2. The
TEAK30
unit itself
3. Serial connection cable for RS232 (usually integral with the system/cabling).
4. Other accessories of the moisture meter
AK50
Connecting the Cables
The cabling is the same as in a standard model D without a PC. Do not apply power yet! Connect
the cables as shown in Figure 2, for portable or for fixed use. Connect first the cable from the meter's