Mô tả
THÔNG SỐ KỸ THUẬT CỦA 40T72
GENERAL
Microprocessor based indicator in 72×36 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. 150W) 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 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 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
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
990W, 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
1KW, 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 > 500KW, for current signals Ri = 50W. 32-segment configurable linearisation can be used.
Potentiometer
Supply 1V >100W
Digital input
Ri = 5,6KW (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).
OUTPUTS
Relay
with NO (NC) contacts rated at 5A, 250V at cosj = 1.
Logic (only for Out1 and Out2) Output, type D 11Vdc, Rout = 220W (6V/20mA).
Triac (for Out1, disabled Out2) 24 to 240Vac ±10%, 2A max Snubberless, I2t = 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. 60W
POWER SUPPLY
11…27Vdc, 18…27Vac ± 10%
50/60Hz, max. 4,5VA
TRANSMITTER POWER SUPPLY
2 wire, 18Vdc ±10%, max. 50mA 1,2Vdc for potentiometer >100W (non isolated from sensor input)
AMBIENT 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
