Gefran 40T 72 Data Sheet

40T 72

CONFIGURABLE INDICATOR

Main applications

• Thermostat

• Humidity switch

• Mould cooling units

• Industrial refrigerators

• Air conditioning

• Food processing equipment

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 more common

physical units

• Sampling time and trip intervention

programmable between 15 and
120msec with resolution between
2000 and 8000 steps

• Retransmission of the measured

variable signal

• 3 trip points, completely configurable

from the faceplate

GENERAL

Microprocessor based indicator in 72x36
format manufactured with SMT.
The instruments have a lexan membrane
faceplate (guaranteed to IP65) which has
3 keys, a 2, 3 / 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,
Pt100J (japanese standard) 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.
A digital input (24Vdc/4mA) is available
for resetting, hold, flash, peak handling or
releasing latch. The instruments have a
maximum of 3 outputs that can be
mechanical relays (5A/250V) or logic
outputs (0 to 11Vdc). In alternative to
output 3 a 4 to 20mA output is available
(max. 150Ω) for retransmission of the
measured input signal, or a digital input
(24Vdc/4mA) can be provided which can
be used for resetting, hold, flash, peak
handling or releasing latch.

Finally, a triac can be fitted (as an
alternative to the other two relay outputs)
that can drive resistive loads up to a
maximum of 2,5A at 220V.
The programming of the instrument is
made easy by grouping the parameters in
function blocks (CFG for the alarm
hysteresis, Inp for the inputs, Out for the
outputs...) 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 cod.
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 (4 digit display),

-99.9 to 99.9 (3 digit display with sign),

-9.9 to 9.9 (2 digit display with sign) 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

Automatic cold junction compensation

(4 digit)
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

A - PV display: indication of process variable
B - Label for engineering units
C - “Function” key
D - “Raise” and “Lower” keys
E - Indication of the states of the outputs

Red LED display
IP65 faceplate protection

FACEPLATE DESCRIPTION

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

TC - Thermocouple

(3 digit + sign)
J 0 to 999°C / 32 to 999°F
K 0 to 999°C / 32 to 999°F
R 0 to 999°C / 32 to 999°F
S 0 to 999°C / 32 to 999°F
T -200 to 400°C / -328 to 752°F
B not available
E -100 to 750°C / -148 to 999°F
N 0 to 999°C / 32 to 999°F
L-GOST 0 to 600°C / 32 to 999°F
U -200 to 400°C / -328 to 752°F
G 0 to 999°C / 32 to 999°F
D 0 to 999°C / 32 to 999°F
C 0 to 999°C / 32 to 999°F
custom -999 to 999

(2 digit + sign)
J 0 to 99°C / 32 to 99°F
K 0 to 99°C / 32 to 99°F
R 0 to 99°C / 32 to 99°F
S 0 to 99°C / 32 to 99°F
T -99 to 99°C / -99 to 99°F
B not available
E not available
N not available
L-GOST 0 to 99°C / 32 to 99°F
U -99 to 99°C / -99 to 99°F
G not available
D not available
C not available
custom -99 to 99

RTD (2 or 3 wire)

(4 digit)

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

(3 digit + sign)

PT100 -200 to 600°C / -328 to 999°F
JPT100 -200 to 600°C / -328 to 999°F

(2 digit + sign)

PT100 -99 to 99°C / -99 to 99°F
JPT100 -99 to 99°C / -99 to 99°F

PTC

990Ω, 25°C

(4 digit and 3 digit + sign)

-55 to 120°C / -67 to 248°F

(2 digit + sign)

-55 to 99°C / -67 to 99°F

NTC

1KΩ, 25°C

(4 digit and 3 digit + sign)

-10 to 70°C / 14 to 158°F

(2 digit + sign)

-10 to 70°C / 14 to 99°F

DC - Linear

With scale configurable within the limits:

-1999 to 9999 (4 digit),

-999 to 999 (3 digit + sign)

-99 to 99 (2 digit + sign)
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 > 500KΩ, for current signals Ri = 50Ω.
32-segment configurable linearisation can
be used.

Potentiometer

Supply 1V >100Ω

Digital input

Ri = 5,6KΩ (24V, 4mA) isolated to 1500V
Function is configurable as alarm or
memory reset, hold, flash zero, display of
the peak value (max., min. or peak to
peak).

O

UTPUTS

Relay

with NO (NC) contacts rated at 5A, 250V
at cosϕ = 1.

Logic (only for Out1 and Out2)
Output, type D 11Vdc, Rout = 220Ω
(6V/20mA).

Triac (for Out1, disabled Out2)
24 to 240Vac ±10%, 2A max
Snubberless, I

2

t = 128A2sec

A maximum of three trip points can be set
as absolute, deviation or symmetrical
deviation alarms.
The hysteresis of each alarm is
configurable individually.
Alarm masking with exclusion on power
up, with memory, delay and minimum
intervention time.
The trip point may be set at any point on
the scale.

Analogue retransmission

4 to 20mA on max. 60Ω

P

OWER SUPPLY

11...27Vdc, 18...27Vac ± 10%
50/60Hz, max. 4,5VA

TRANSMITTER POWER SUPPLY

2 wire, 18Vdc ±10%, max. 50mA
1,2Vdc for potentiometer >100Ω
(non isolated from sensor input)

A

MBIENT CONDITIONS

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

WEIGHT

110g. in the complete version

A

B

C

D

E