GRAPHTEC GL840 - Common Specification of the Terminal in the Input Section; Specification of Input Section (GL840-M with Standard Terminal)

Common specification of the terminal in the input section
* The following specifications are common to GL840-M and GL840-WV.
DescriptionItem
Measurement
accuracy
20/50/100/200/500 mV, 1/2/5/10/20/50/100 V, 1-5 V F.S.
Thermocouple : K, J, E, T, R, S, B, N, W (WRe5-26)
Resistance temperature detector : Pt100, JPt100, Pt1000 (IEC751)
Measurement accuracy : 100°C, 500°C, 2000°C
0 to 100% (voltage 0 V to 1 V scaling conversion)
Voltage
Temperature
Humidity
At least 90 dB (50/60 Hz; signal source 300 or less)
At least 48 dB (with +/- terminals shorted)
Gain : 0.01% of F.S./°C * Occurs when sampling speed is 10 ms/20 ms or 50 ms.
Zero : 0.02% of F.S./°C
Temperature coefficient
16-bit Delta-Sigma A/D converter (Effective resolution: approx. 1/40,000 of ± range) A/D converter
Common mode rejection ratio
Noise
Number of input channels M3 screw type, 20 channels (maximum 200 channels with extension unit)
Method Photo MOS relay scanning system, all channels isolated, balanced input
Specification of input section (GL840-M with standard terminal)
Description
Item
•
Voltage : ±0.1% of F.S.Measurement accuracy *
1
(23°C ±5°C)
• When 30 minutes or
more have elapsed after
power was switched on
• Sampling 1 s/20 ch
• Filter ON (10)
• GND connected
Between input terminal/GND : 60Vp-p
Between input terminal/input terminal : 1 minute at 350Vp-p
Between input terminal/GND : 1 minute at 350Vp-p
Between input terminal/input terminal : 60Vp-p
Between +/– terminals : 20mV to 2Vrange (60Vp-p)
5V to 100V range (110Vp-p)
Maximum input voltage
Withstand voltage
*1: Thermocouple diameters T, K: 0.32 , others: 0.65 
* 3-wire system
•
Resistance temperature detector
Type Measurement AccuracyMeasurement
Temperature Range
R/S
B
K
E
T
N
W
Reference contact compensation
accuracy
J
0TS100˚C ±5.2˚C
±3.0˚C
± (0.05% of rdg +2.0˚C)
± (0.05% of rdg +2.0˚C)
± (0.05% of rdg +2.0˚C)
± (0.05% of rdg +2.0˚C)
± (0.05% of rdg +1.0˚C)
± (0.05% of rdg +2.0˚C)
± (0.05% of rdg +1.0˚C)
± (0.1% of rdg +1.5˚C)
± (0.1% of rdg +0.5˚C)
± (0.05% of rdg +1.0˚C)
± (0.1% of rdg +2.0˚C)
± (0.1% of rdg +1.0˚C)
± (0.1% of rdg +1.5˚C)
±3.5˚C
±2.7˚C
±1.7˚C
±0.5˚C
100<TS300˚C
R: 300<TS1600˚C
S: 300<TS1760˚C
400TS600˚C
600<TS1820˚C
-200TS-100˚C
-100<TS1370˚C
-200TS-100˚C
-100<TS800˚C
-200TS-100˚C
-100<TS400˚C
-200TS-100˚C
-100<TS100˚C
100<TS1100˚C
-200TS<0˚C
0TS1300˚C
0TS2000˚C
•
Thermocouple
Type Applied current Accuracy Measurement
Temperature Range
Pt100
JPt100
Pt1000
-200 to 850°C ±1.0°C1mA
-200 to 500°C ±0.8°C1mA
-200 to 500°C ±0.8°C0.3mA
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