Graphtec Instrument GL7000 Modules GL7-M.jpg

GL7-M   Voltage/Temperature Module

Isolated universal 10 channel temp/voltage multi-input module for thermocouple, RTD, and scaled voltage input signals.  For mixed used testing and monitoring environment requiring multi-various physical measurement data, GL7-M functions as a very useful data platform solution.  Max 10 modules per main unit GL7000.  10ms (100 samples/sec) sampling interval can be achievable for all 10 units (100 channels) and synching together up to 5 GL7000 units with 10 modules each for a maximum 500-channel system.  Max input voltage range is 60Vp-p.

Graphtec Instrument GL7000 Modules GL7-M Application Examples.gif

Application Examples

THERMODYNAMIC MEASUREMENT FOR REFRIGERATOR / MEASUREMENT SOLUTION FOR HOME APPLIANCES AND HARDWARE

THERMODYNAMIC MEASUREMENT FOR REFRIGERATOR / MEASUREMENT SOLUTION FOR HOME APPLIANCES AND HARDWARE

GL7-M Specification

Item Description
Type of module Voltage and Temperature measurement module
Model number GL7-M
Number of input channels 10 channels
Input method All channels isolated balanced input, Scans channels for sampling,
Screw terminal (M3 screw)
Sampling speed (interval) 100 Samples/s at 10ch to 1 Sample/h (10 ms at 10ch to 1 hr.)
Built in RAM 2 million samples for each channel
Measurement range Voltage 20, 50, 100, 200, 500 mV, 1, 2, 5, 10, 20, 50 V, and 1-5 V Full Scale
Temperature Thermocouple: K, J, E, T, R, S, B, N, and W (WRe5-26)
RTD: Pt100, JPt100 (JIS), Pt1000 (IEC751)
Humidity 0 to 100 % RH, using optional humidity sensor (B-530)
Measurement accuracy (*1) Voltage ±0.1% of Full Scale
Temperature Thermocouple Measurement range
(TS: Temperature Sensed)		 Measurement accuracy
R/S 0 ≤ TS ≤ 100ºC ±5.2ºC
100 < TS ≤ 300ºC ±3.0ºC
R: 300 < TS ≤ 1600ºC ±(0.05% of reading + 2.0ºC)
S: 300 < TS ≤ 1760ºC ±(0.05% of reading + 2.0ºC)
B 400 ≤ TS ≤ 600ºC ±3.5ºC
600 < TS ≤ 1820ºC ±(0.05% of reading + 2.0ºC)
K -200 ≤ TS ≤ -100ºC ±(0.05% of reading + 2.0ºC)
-100 < TS ≤ 1370ºC ±(0.05% of reading + 1.0ºC)
E -200 ≤ TS ≤ -100ºC ±(0.05% of reading + 2.0ºC)
-100 < TS ≤ 800ºC ±(0.05% of reading + 1.0ºC)
T -200 ≤ TS ≤ -100ºC ±(0.1% of reading + 1.5ºC)
-100 < TS ≤ 400ºC ±(0.1% of reading + 0.5ºC)
J -200 ≤ TS ≤ -100ºC ±2.7ºC
-100 < TS ≤ 100ºC ±1.7ºC
100 < TS ≤ 1100ºC ±(0.05% of reading + 1.0ºC)
N -200 ≤ TS < 0ºC ±(0.1% of reading + 2.0ºC)
0 ≤ TS ≤ 1300ºC ±(0.1% of reading + 1.0ºC)
W 0 ≤ TS ≤ 2000ºC ±(0.1% of reading + 1.5ºC)
Reference Junction Compensation (R.J.C.) accuracy: ±0.5ºC
* Wire size of thermocouple used is 0.32 mm diameter in the T type and 0.65 mm diameter in other types.
RTD Measurement range Driving current Accuracy
Pt100 -200 to 850ºC (F.S. = 1050ºC) 1 mA ±1.0ºC
JPt100 -200 to 500ºC (F.S. = 700ºC) 1 mA ±0.8ºC
Pt1000 -200 to 500ºC (F.S. = 700ºC) 0.2 mA ±0.8ºC
R.J. Compensation Select internal or external
A/D converter Sigma-Delta type, 16 bits (effective resolution: 1/40000 of the measuring full range)
Input impedance 1 MΩ ±5%
Maximum input voltage Between (+)/(-) terminal 60 Vp-p
Between channels ((-) terminals) 60 Vp-p
Between channel/GND 60 Vp-p
Max. voltage (withstand) Between channels 350 Vp-p (1 minute)
Between channel/GND 350 Vp-p (1 minute)
Isolation Between input/GND Min. 50 MΩ (at 500 V DC)
Common-mode rejection ratio Min. 90 dB (50/60 Hz, Signal source impedance: Max. 300 Ω)
Filter Moving average Off, 2, 5, 10, 20, 40
(Moving average in selected number. When the sample is longer than 5 seconds, the data sampled in the sub-sample (5 seconds) will be used for creating the average value.)
5 V output Driving the humidity sensor B-530, 1 channel
External dimensions (W×D×H) Approx. 49 x 136 x 160 mm (Excluding projections)
Weight Approx. 770 g

*1 Subject to the conditions:

  • Room temperature is 23ºC ±5ºC. ● When 30 minutes or more have elapsed after power has been turned on.

  • Filter is set to 10 or Line. ● Sampling rate is set to 1 second.

  • GND terminal is connected to ground.