GRAPHTEC GL840 - Gl840-Wv: B-565

4-6
CHAPTER 4 Specication
GL840-WV: B-565
Item Description
Number of input channels 20ch (200ch available when used with the extension terminal base)
* Possible to direct-connect or connect with the extension terminal connection cable
(sold separately) between the GL840 and terminal base, or between terminal
bases.
Input terminal type M3 screw type terminals (Rectangular at washer)
Input method Photo MOS relay scanning system
All channels isolated, balanced input
* Terminal b to be used to connect the Resistance bulb is shorted within all
channels.
Scan speed 10 ms/1 ch maximum
Measurement ranges Voltage: 20, 50, 100, 200, 500 mV; 1, 2, 5, 10, 20, 50, 100 V; 1-5 V F.S.
Temperature
Thermocouples : K, J, E, T, R, S, B, N, C (WRe5-26)
Resistance bulb : Pt100, JPt100, Pt1000 (IEC751)
Temperature range: 100°C, 500°C, 2000°C
(In the case of Fahrenheit: 150°F, 750°F, 3000°F)
Humidity: 0 to 100% (voltage 0 V to 1 V scaling conversion) xed
Measurement accuracy
(23°C ±5°C)
• When 30 minutes or more have
elapsed after power was switched on
• Sampling 1 s/10 ch
• Filter ON (10)
• GND connected
Voltage: ± (0.05% of F.S. + 10μV)
Temperature
•
Thermocouple
Thermocouple
Measurement Temperature
Range (°C)
Measurement Accuracy
R/S 0 ≤ TS ≤ 100℃
100 < TS ≤ 300℃
R : 300 < TS ≤ 1600℃
S : 300 < TS ≤ 1760℃
±4.5℃
±3.0℃
±2.2℃
±2.2℃
B 400 ≤ TS ≤ 600℃
600 < TS ≤ 1820℃
±3.5℃
±2.5℃
K -200 ≤ TS ≤ -100℃
-100 < TS ≤ 1370℃
±1.5℃
±0.8℃
E -200 ≤ TS ≤ -100℃
-100 < TS ≤ 800℃
±1.0℃
±0.8℃
T -200 ≤ TS ≤ -100℃
-100 < TS ≤ 400℃
±1.5℃
±0.6℃
J -200 ≤ TS ≤ -100℃
-100 < TS ≤ 100℃
100 < TS ≤ 1100℃
±1.0℃
±0.8℃
±0.6℃
N -200 ≤ TS < 0℃
0 ≤ TS ≤ 1300℃
±2.2℃
±1.0℃
C (W) 0 ≤ TS ≤ 2000℃ ±1.8℃
Reference contact compensation accuracy ±0.3℃
* Thermocouple diameters T - K: 0.32 φ, others: 0.65 φ
•
Resistance bulb
Type
Measurement Temperature
Range (°C)
Applied
current
Measurement
Pt100 -200 ≤ TS ≤ 100℃ 1mA ±0.6℃
100 < TS ≤ 500℃ ±0.8℃
500 < TS ≤ 850℃ ±1.0℃
JPt100 -200 ≤ TS ≤ 100℃ 1mA ±0.6℃
100 < TS ≤ 500℃ ±0.8℃
Pt1000 -200 ≤ TS ≤ 100℃ 0.3mA ±0.6℃
100 < TS ≤ 500℃ ±0.8℃
* 3-wire system