FUNCTIONAL DATA
Measurement range: according to the used probe (see table range)
Display resolution: according to the probe used 1/0,1/5/0,5
Overall accuracy: +/- 0,5 % fs
Sampling rate: 1 sample per second
Compliance: ECC directive EMC 89/336 (EN 50081-1, EN 50082-1), ECC
directive LV 73/23 and 93/68 (Instrument oparating under 50 VAC and 75
VDC)
MEASUREMENT RANGE TABLE
-9.9 ... 99.9- 99 ... 999
4..20 mA, 0..20 mA,
0..10 V (gener.)
---0 ... +999 °C
+32 ... +999 °F
tc S (rh)
---0 ... +999 °C
+32 ... +999 °F
tc K (Cr)
---0 ... +800 °C
+32 ... 999 °F
tc J (FE)
-9.9 ... +99.9 °C
-9.9 ... +99.9 °F
-50 ... +150 °C
-58 ... +302 °F
Ni 100 (ni)
-9.9 ... +99.9 °C
-9.9 ... +99.9 °F
-99 ... +600 °C
-99 ... +999 °F
Pt 100 (Pt)
-9.9 ... +99.9 °C
-9.9 ... +99.9 °F
-50 ... +150 °C
-58 ... +302 °F
PTC
3 DIGIT with D.P.3 DIGITPROBE
3 - INSTALLATION
MECHANICAL MOUNTING: The instrument, in case 33 x 75 mm, is
designed for panel mounting. Make an hole 29 x 71 mm and insert the
instrument, fixing it with the provided special bracket . We recommend to
mount the gasket to obtain an IP 65 front protection. Avoid to place the
instrument in areas with humidity or dirt. Connect the instrument as far as
possible from source of electromagnetic disturbances so as motors, power
relays, relays, electrovalves,etc.
ELECTRICAL CONNECTIONS: Carry out the electrical wiring
connecting only one wire for each terminal , according to the following
diagram, check that the power supply is the same as indicated on the
instrument. The instrument, being a built in equipment with permanent
connection into a cabinet, is not furnished with internal device protecting
from overcurrent : it's recommended , therefore, to properly protect all the
electric circuits connected to the instrument, with devices (ex. fuses)
proportionate to the circulating currents. It's strongly recommended to use
cables with proper insulation, according to the working voltages and
temperatures. Furthermore, the input cables has to be kept separate from
line voltage wiring. If the input cables is screened, it has to be connected
on the ground with only one side. It's recommended to supply the
instrument using the Tecnologic TCTR transformer or equivalent type, and
to use one transformer for each instrument.
4 - PROGRAMMING
4.1 - PROGRAMMING OF PARAMETERS
To accede to the operating parameters it is necessary to press key P
holding it down for about 5 seconds, afterwhich the led SET will flash and
the code of the first parameter will be visualized on the display. At this
point key P can be released and by pressing UP or DOWN the desired
parameter can be selected. Once the parameter on which we intended to
operate has been selected to modify it press P, while holding it down, the
set of the parameter will show up. To modify this value keep P pressed
while acting on UP or on DOWN so as to increase or decrease the value.
Once the desired value has been set release P and the selected parameter
code can be read on the display. By pressing UP or DOWN it is therefore
possible to choose another one and modify it as previously mentioned. To
outgoing from the programming mode no key is to be pressed for about 20
seconds, the instrument will automatically return to normal functioning
mode, visualizing the process value.
The instrument must not to be switched off during the programming mode
otherwise the data inserted in the last session will not be memorized.
4.2 - PROGRAMMING OF INPUT LIMITS
If the instrument is provided with input for normalized signals 4..20 mA,
0..20 mA or 0..10 V it is necessary to set input limits to have the correct
measure indication. For example: if the probe to connect has a range of
0..100 bar, it will be necessary to program 0 on "Lci" parameter (start
scale) and 100 on "Hci" parameter (end scale). At same time, we have to
modify the same parameters to have the decimal point. Example:
instrument connected with relative humidity probe with 20..99 %RH as
range, to have the decimal point it will occour to program "dP" in "on"
mode, "Lci" at 20.0 and "Hci" at 99.9.
5 - DESCRIPTION OF PARAMETERS
Here following are described all the instrument parameters; pls. note that
some of them could do not appear or because are according to the kind of
used instrument or because are automatically not qualified, as they're not
necessary.
Lci - LOWER NORMALIZED SIGNALS INPUT LIMIT: Value that the
instrument must to indicate in correspondance of minumum value (4 mA, 0
mA, 0 V).
Hci - HIGHER NORMALIZED SIGNALS INPUT LIMIT: Value that the
instrument must to indicate in correspondance of maximum value (20 mA,
10 V).
CAL - CALIBRATION: Positive or negative offset which is calculated on
probe reading before visualizing. This parameter can be utilized when a
recalibration of the instrument is desired.
PSE - INPUT PROBE: Allows selecting, if the instrument type is for
thermocouples or for thermoresistances, various types of probe: J (FE), K
(Cr), S (rh) for thermocouples and Pt100 (Pt), Ni100 (ni) for
thermoresistances. On changing this parameter it is to be remember that
the exit programming phase is to be carried out first afterwhich the
instrument is to be switched off and then on again.
dP - DECIMAL POINT : Allows the insertion of the decimal point on the
display and therefore to determine resolution of the reading value (1 or
0,1) (on= with decimal point, oF=without decimal point).(available only
for models provided for PTC, RTD and normalized signals input).
rou - UNIT OF MEASUREMENT: Determines the visualization of the
temperature in Centigrade or Fahrenheit degree.
hdd - HALF DIGIT DISPLAY: This parameter allows the approximation of
the last digit at right side. Infact when this parameter is in on mode, on this
digit will be show 0 when the real measuring value is between 0 and 4, and
will be show 5 when the real measuring value is between 5 and 9. For
example if the real measure is 78 display will show 75, or if the real
measure is 70.3 the display will show 70.0 (n=without approximation,
y=with approximation).
tAb - FIXED PARAMETER
6.1 - PARAMETERS TABLE
-99-99 ... 999Lower limit for normalized
signal input
Lci
NotesDef.RangeDescriptionPar.
TECNOLOGIC - TDV 03 USER MANUAL (I - GB) - Vr. 01 - ISTR 00260 - PAG. 4
