Gefran 4T 72 Data Sheet

Max. non-linearity error See t.P parameter at page 3

For correct and safe
installation, follow the
instructions and
observe the warnings
contained in this
manual.

Faceplate protection IP65
Working / Storage temperatures 0...50°C / -20...70°C
Relative humidity 20 to 85%, non-condensing
Installation Panel mounting
Weight 90g for the complete version

Resolution
(function of settable sample time)

120msec, >13bit - 8000 points
60msec, >13bit - 8000 points (only for linear inputs)
30msec, >12bit - 4000 points (only for linear inputs)
15msec, >11bit - 2000 points (only for linear inputs)

Thermocouples

J, K, R, S, T, B, E, N
(IEC 584-1, CEI EN 60584-1, 60584-2)

L GOST, U, G, D, C
Custom linearization available on request

Cold junction error 0,1° / °C
RTD type (scale configurable within indicated

range, with or without decimal point)
Max. RTD line resistance

DIN 43760 (PT100), JPT100
20Ω

PTC type / NTC type 990Ω, 25°C / 1KΩ, 25°C

°C / °F selection Faceplate configurable

Linear scale ranges

-1999 to 9999 (with 4 digit display)

-999 to 999 (with 3 digit display)

-99 to 99 (with 2 digit display)
Configurable decimal point position, possible 32
segment linearization

(option) Power supply for 2­wire transmitter

18V ±10%, 30 mA

1.2 V DC for potentiometer > 100 Ω (version P77)

Power supply (switching)

11...27 V DC, 18...27VAC ±10%,
50/60Hz, 3VA (not isolated)

Display

2, 3, 4 digits, red, height 14 mm

Keys 3 mechanical keys (Raise, Lower, F)
Accuracy

0.2% f.s. at 25°C ambient temperature, ts=120msec

Main input

TC, RTD, PTC, NTC
60 mV, 1 V, 5 V, 10 V, Ri ≥ 500KΩ
20 mA, Ri = 50Ω
adjustable digital filter

76

36

54

8

30

69,5

43

83

72

1 • INSTALLATION

• Dimensions and cut-out: Panel mounting

Panel mounting:

Fix the device with the bracket provided before making any electrical connections.
To mount two or more devices side by side, use the cut-out dimensions shown above.

CE MARKING: EMC (electromagnetic compatibility) conformity to EEC Directive
89/336/CEE with reference to the generic Standard EN61000-6-2 (immunity in
industrial environments) and EN50081-1 (emission in residential environments).
BT (low voltage) conformity to Directive 73/23/CEE as modified by Directive 93/68.
MAINTENANCE: Repairs must be done out only by trained and specialized personnel.
Cut power to the device before accessing internal parts.
Do not clean the case with hydrocarbon-based solvents (Petrol, Trichlorethylene, etc.).
Use of these solvents can reduce the mechanical reliability of the device. Use a cloth
dampened in ethyl alcohol or water to clean the external plastic case.
SERVICE: GEFRAN has a service department. The warranty excludes defects caused
by any use not conforming to these instructions.

2 • TECHNICAL SPECIFICATIONS

FUNCTION CABLE LENGTH USED
TC input probe 0,8 mm2compensated 5 mt
“PT100” input probe 1 mm

2

3 mt

Power supply cable 1 mm

2

1 mt

EMC conformity has been tested with the following connections

!

8

4T 72

UNIVERSAL TEMPERATURE INDICATOR

SOFTWARE VERSION 1.0x / 2.0x
code 81606A / edition 0.5 - 05/04

USER’S MANUAL

9

Available thermocouples:

J, K, R, S, T, B, E, N,

L, U, G, D, C

- Respect polarities

- For extensions, use
compensated cable
appropriate for
thermocouple.

Use wires of adequate
thickness (min. 1mm

2

)

PT100, JPT100,

PTC, NTC

dc current

linear input

20mA, Ri = 50Ω

(signal must be isolated

from power supply)

dc voltage linear input

60mV, 1V, 5V, 10V,

Ri ≥ 500KΩ

(signal must be isolated

from power supply)

“Raise” and “Lower” keys:

These keys are used for any operation that requires
a numerical parameter to be raised or lowered. ••
The speed of change is proportional to the time the
key is pressed. •• The operation is not cyclic: once
the maximum (minimum) limit is reached, there will
be no further increase (decrease) of the value, even
if the key remains pressed.
The keys can be configured to perform reset, hold,
display of the peak value, etc. as determined by the
‘t.U.’ and ‘t.d.’ parameters on the ‘In’ menu.

3 • DESCRIPTION OF FRONT PANEL

Function key:

Gives access to different configuration stages •• Confirms

any parameter changes

Standard:

11...27Vdc ±10%

18...27Vac ±10%

50/60Hz, 3VA max.

not isolated

• Linear (V)

• Pt100 / PTC / NTC

3

1

2

2

1

+

-

• Linear (I)

4

1

2

-

+

• Power supply

11

12

~

~

+

-

• Thermocouples

2

1

4

2

3

1

-

+

-

Ri = 50Ω

4...20mA

• Linear input with 2-wire transmitter

PWR

12411321

!

Label with engineering unit

4 • CONNECTIONS

3-wire Pt100

2-wire PTC /
NTC / Pt100

+

PV display: Indication of process variable
Indication of ‘HI’ or ‘Lo’ out of range •• Indication of
open circuit (br) or short circuit (Er) •• Display of
configuration and calibration messages

5108976

T

T

• Linear input for potentiometer

4

2

3

1

R >100Ω

+ 1,2V

-

• Device structure: identification of boards

S3

S4

CPU board

PROBE POWER board

RTD, PTC, NTC

input

ON

OFF

Transmitter and

potentiometer
power supply

OFF

ON

S3

S4

S9

S8

S5

S1

S4

S6

S3

S7

Voltage

1V

24V (18V)

Jumpers

S4 - S6B - S7A

S6B - S7A

Probe power supply

• Inputs

5 • PROGRAMMING and CONFIGURATION

I F

P.V.

Process variable

Password

P A

PA = 99

P r

U.C.

Custom linearization

User calibration

YES

NO

LEVEL 1 DISPLAY

L n

Protection code

Information display

I n

Input settings

F

Pressed for
approx. 2 sec.

Keep the F key

pressed to browse

the menus.

Release the F key

to enter the

displayed menu.

Press the F key to

access the

parameters.

Keep the F key

pressed to exit any

menu at any time.