Connecting The Signal Input Cables; Terminal Configuration And Signal Types; Connection Diagram - GRAPHTEC midi LOGGER GL800 User Manual

Checks and Preparation

2.5 Connecting the Signal Input Cables

This section describes how to connect the signal input cables.

Terminal Configuration and Signal Types

Connection diagram

Direct voltage input
Resistance temperature detector input
+
......................................... High-voltage terminal (terminal for high-voltage input signals)
– .......................................... Low-voltage terminal (terminal for low-voltage input signals)
b .......................................... Dedicated terminal when connecting resistance temperature detector
*Resistance temperature detector input terminals A (+) and B (-) are isolated within each channel.
Terminal b is shorted within all channels.
Input configuration
Analog voltage
Thermocouples
Resistance temperature detector
A/D resolution
Filter
2-6
CH1
＋
−
b
＋
Direct voltage
−
A
B
b
Lead wire resistance should be 10
per wire, and equivalent among the three wires.
Item
Isolated input, scanning
20, 50, 100, 200, 500 mV/F.S.; 1, 2, 5, 10, 20, 50 V/F.S.; 1-5V
K, J, E, T, R, S, B, N, W (WRe 5-26)
PT100, JPT100, PT1000 (IEC751)
16-bit
Off, 2, 5, 10, 20, 40
Filter operation is on a moving average basis.
The average value of the set sampling count is used.
CH20
Thermocouple input
Direct current input
＋
−
b
Ω
or below
Description
＋
−
Compensation
copper wire
＋
Direct current
−
Shunt resistance
Ex: for current in the 4 to 20 mA range,
apply a resistance of 250 Ω (±0.1%) and
perform measurement in the 1 to 5 V range.