Mô tả
THÔNG SỐ KỸ THUẬT CỦA 40T48
GENERAL
Microprocessor based indicator in both 48×48 (1/16 DIN) formats manufactured with SMT.
The instruments have a lexan membrane faceplate (guaranteed to IP65) which has 3 keys, a 4 digit display and 3 indicating LED’s for the output statuses.
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 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 terminals.
No external shunt or adapter is required.
A digital input (24Vdc/5mA) is available for resetting, hold, flash, peak handling or releasing latch. The instruments have a maximum of 4 outputs that can be mechanical relays (5A/250V) or logic
outputs 24V±10% (10Vmin / 20mA). One output of 4 to 20mA (max. 500W) is available for retranmitting the measured input signal.
The retransmission output, the digital input and the third output are alternatives.
The options include a triac output that can directly drive resistive loads up to a maximum of 1A at 240V.
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 (technical data GF_eXpress). A configurable personal software protection code (password protection) can be used to restrict the levels of editing and displaying the configuration parameters.
TECHNICAL DATA INPUTS
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 4000 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
RTD (2 or 3 wire)
PT100 -200 to 600°C / -328 to 1112°F JPT100 -200 to 600°C / -328 to 1112°F
PTC
990W, 25°C -55 to 120°C / -67 to
248°F
NTC
1KW, 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
Ri ³ 1MW for 60mV, 1V
Ri ³ 10KW for signal 5V, 10V Ri = 50W for signal 20mA.
32-segment configurable linearisation can be used.
Potentiometer
Supply 1,2V >100W
Digital input
- in voltage 24V, 5mA Ri = 4,7KW isolation 1500V
- contact type
Function is configurable as alarm or memory reset, hold, flash zero, display of the peak value (max., min. or peak to peak).
OUTPUTS
4 configurable outputs:
OUT1, OUT4 relay only; OUT2 relay, logic or triac; OUT3 relay.
A maximum of four 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.
Relay
with NO (NC) contacts rated at 5A, 250V at cosj = 1.
Logic .
24 Vdc (10Vmin/20mA) limitation to 30mA (indicated in order code with D).
Triac
24…240Vac ±10% 50/60Hz, 1A max
I2t = 128A2sec leakage current 1,5mA max at 200Vac.
Analog retransmission
Of variable 0… 10V, 0/4… 20mA at 500W max. Resolution 12 bit.
Serial Line
Isolated 2/4 wires, RS485 interface (1200, 2400, 4800, 9600, 19200 baud)
Protocol: GEFRAN CENCAL or MOD- BUS
POWER SUPPLY
Standard: 100 to 240Vac ± 10%
optional: 11 to 27Vac/dc ± 10% 50/60Hz, max. 8VA
Protected by an internal fuse (not replaceable by the operator).
POWER SUPPLY
TRANSMITTER
24V ±10% unstabilised, 30mA 15V for transmitter, 30mA 1,2V for potentiometer > 100W
