gefran 850 Installation And Instruction Manual page 271

INPUTS
Sensor type
Thermocouple
(only Main and Aux1)
RTD input
(Pt100 and JPt100)
MAIN AND AUXILIARY
(only Main and Aux1)
INPUT
(Main, Aux1, Aux2)
Linear DC input
Sampling time
Digital filter
Rejection at network disturbance
(48-62Hz)
Temperature unit of measure
Reading interval
Insulation
Type
TA (ammeter)
INPUT
Accuracy
Number
Type
DIGITAL INPUTS
Isolation
80209C_MHW_850-1650-1850_01-2020_ITA_pag. 269
• Thermocouples, RTD (PT100, JPT100), IR pyrometers with type
K output, 4...20mA, 0...20mA, 10V, 5V, 1V, 60mV, potenziometer
• Reading accuracy : ±0,1% of value read
This Gefran controller, when subjected to the necessary
calibration operations in the field, is suitable for use in Nadcap
applications for any class of oven, from 1 to 6, according to
specification AMS2750E, paragraph 3.3.1.
• Types : J, K, R, S, T, C, D, B, E, L, L-GOST, U, G, N,Pt20Rh-
Pt40Rh Custom linearisation available
• Linearisation accuracy: according to standard ITS90 polynomes;
refer to user manual for details
• Cool junction accuracy: < ± 1°C a 25°C room temperature
• Cool junction compensation : greater than 40:1 rejection at
changes in room temperature exceeding 25°C
Diagnostics: Indication of faulty probe and out of scale
• Types: Pt100, JPt100. Custom linearisation available
• Calibration accuracy: < ±0,1% of the value read in °C ± 0,4°C
• Linearisation accuracy: <±0,062°C
• Thermal shift: < (±0.002% of read value/°C, starting from 25°C
room temperature) ± 0.1°C
• Diagnostics: Indication of faulty probe and out of scale
• Types : 0...60 mV, 0...20mA, 4...20mA, 0...1V, 0...5V, 0...10V,
4
0...2. V high impedance, 0...1.2V high impedance
•Input impedance :
0...60mV, 0...1V, 0...1.2V, 0...2.
0...5V, 0...10V : > 400 kΩ
0...20mA, 4...20mA : 50 Ω
• Linearisation: linear or custom
• Calibration accuracy: < 0.1% full scale
• Thermal shift: <±0.003% full scale/°C, starting from 25°C room
temperature
60 ms or 120 ms, selectable
0,0...20,0 s configurable
Rejection at differential mode: >80 dB
Rejection at common mode: >150 dB
Grado C / F, selectable on the keypad
Tipe: linear
Scale: -1999...9999, settable decimal point
Functional insulation between main and auxiliary inputs
Isolated via external transformer
Number: 2 max
Max. capacity: x / 50 mA AC
Line frequency: 50/60 Hz
Input impedance (Ri): 10 Ω
±2% f.s. ±1 digit @25 °C
5 max
Voltage-free contact, or
NPN 24 V - 4,5 mA, o
PNP 12/24 V - max 3,6 mA
For detail see electrical connections
250 V
4
V : > 100 MΩ