Gefran 4T 48 Data Sheet

4T 48

TEMPERATURE INDICATOR with CONFIGURABLE INPUT

Main applications

• Extrusion lines

• Rubber presses

• Test benches

• Food processing equipment

• Thermometry

• Hygrometry

Main features

• Faceplate configurable input

• Protected by a personal code

• Configurable by a serial link

• Transmitter power supply incorporated

• Custom thermocouple linearisation

available

• Internal linearisation for engineering
units

• Labels provided for the most common
physical units

GENERAL

Microprocessor based indicator in both
48x48 (1/16 DIN) formats manufactured
with SMT.
The instrument have a lexan
membrane faceplate (guaranteed to
IP65) which has 3 keys, a 4-digit
display.
The input signal can be selected from a
wide range of sensors:

• Thermocouples of type J, K, R, S, T,
B, E, N, L GOST, U, G, D, C

• Resistance thermometers Pt100,
JPt100, 2 / 3 wire

• PTC and NTC themistors

• Linear inputs 0 to 60/12 to 60mV,
0 to 20/4 to 20mA,
0 to 10/2 to 10/0 to 5/1 to 5/0 to 1/0,
2 to1V

The selection is made using the
faceplate keys and correct input
contact.
No external shunt or adapter is
required.
The programming of the instrument is
made easy by grouping the parameters
in function blocks and by a simplified
data entry menu.
The configuration can be simplified
even further using the PC programming

kit made up of a connection cable and
a menu guide program that runs under
windows (see data sheet WINSTRUM).
A configurable personal software
protection code (password protection)
can be used to restrict the levels of
editing and displaying the configuration
parameters.

TECHNICAL DATA
I

NPUTS

Accuracy 0,2% f.s. ±1digit.
Sampling time: 120msec for temperatu­re sensors, configurable for linear
inputs down to a minimum of 15msec
with reduction of the resolution to 2000
steps.
Configurable decimal point position for
linear inputs, for TC, RTD, PTC and
NTC inputs, only one decimal digit is
allowed in the maximum display range
of -199.9 to 999.9 with indication of
open circuit thermocouple or RTD, PTC
or NTC in open or short circuit, indica­tion of over- and under-range for linear
inputs.

TC - Thermocouple

J 0 to 1000°C / 32 to 1832°F
K 0 to 1300°C / 32 to 2372°F
R 0 to 1750°C / 32 to 3182°F
S 0 to 1750°C / 32 to 3182°F
T -200 to 400°C / -328 to 752°F
B 44 to 1800°C / 111 to 3272°F
E -100 to 750°C / -148 to 1382°F
N 0 to 1300°C / 32 to 2372°F
L-GOST 0 to 600°C / 32 to 1112°F
U -200 to 400°C / -328 to 752°F
G 0 to 2300°C / 32 to 4172°F
D 0 to 2300°C / 32 to 4172°F
C 0 to 2300°C / 32 to 4172°F
custom -1999 to 9999

A - PV display: indication of process variable, 10mm high

Red LED display
B - Label for engineering units
C - “Function” key
D - “Raise” and “Lower” keys
E - key not used

IP65 faceplate protection

FACEPLATE DESCRIPTION

RTD (2 or 3 wire)

PT100 -200 to 600°C / -328 to 1112°F
JPT100 -200 to 600°C / -328 to 1112°F

PTC

990Ω, 25°C -55 to 120 °C / -67 to 248°F

NTC

1KΩ, 25°C -10 to 70 °C / 14 to 158°F

DC - Linear

With scale configurable within the
limits:

-1999 to 9999
0 to 60mV / 12 to 60mV
0 to 10V / 2 to 10V
0 to 5V / 1 to 5V
0 to 1V / 0,2 to 1V
0 to 20mA / 4 to 20mA
Input impedance: for voltage signals
Ri > 1MΩ f.s. 60mV and 1V,
Ri > 10KΩ f.s. 5V and10V.
For current signals Ri = 50Ω
32-segment configurable linearisation
can be used.

POWER SUPPLY

Standard: 100 to 240Vac ± 10%
optional: 11 to 27Vac/dc ± 10%
50/60Hz, max. 5,5VA
Protected by an internal fuse (not
replaceable by the operator).

POWER SUPPLY

TRANSMITTER

24V ±10% unstabilised, 50mA
15V for transmitter, 50mA
1,2V for potentiometer > 100Ω

AMBIENT CONDITIONS

Working temperature range: 0 to 50°C
Storage temperature range: -20 to 70°C
Humidity: 20 to 85%Ur non-condensing

WEIGHT

150g in the complete version

D

C

B

A

E