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Manufacturer: Graphtec
Model: GL840-M
Configuration for additional channels
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Number of channels |
20 channels |
40 channels |
100 channels |
200 channels |
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GL840 unit (GL840-M or GL840-WV) |
1 set |
1 set |
1 set |
1 set |
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Connection cable(B-567-05 or -20) |
N/A |
1 pc |
1 pc |
1 pc |
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Terminal base (B-566) |
N/A |
2 sets |
5 sets |
10 sets |
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Input terminal (B-564 or B-565 ) |
N/A |
1 set |
4 sets |
9 sets |
Input terminal blocks can be connected directly(in daisy chain), or using the B-565 cable(s). This allows the input terminals to be placed in separate locations according to the need of the application.
The input terminal unit and the GL840 main body can be extended by using an extended connections cable.
*If the signal is affected by noise, It may be required to use a slower sampling.
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Item |
Description |
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Model number |
GL840-M, Input terminal B-564 |
GL840-WV, Input terminal B-565 |
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Input method |
All channels isolated balanced input *11, Scans channels for sampling |
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Type of input terminal |
Screw terminal (M3 screw) |
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Measurement |
Voltage |
20, 50, 100, 200, 500 mV, 1, 2, 5, 10, 20, 50, 100 V, and 1-5V F.S. (Full Scale) |
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Thermocouple |
Type: K, J, E, T, R, S, B, N, W (WRe5-26) |
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RTD (Resistance |
Type: Pt100, JPt100 (JIS), Pt1000 (IEC751) |
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Humidity |
0 to 100 % RH - using the humidity sensor (option B-530) |
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Filter |
Off, 2, 5, 10, 20, 40 (moving average in selected number) |
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Measurement accuracy *13 |
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Voltage |
± 0.1% of F.S. (Full Scale) |
± (0.05% of F.S. + 10μV) |
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Temperature (Thermocouple) *14 |
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Type |
Measurement range |
Measurement accuracy |
Measurement accuracy |
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R |
0 ≤ TS ≤ 100 ºC |
± 5.2 ºC |
± 4.5 ºC |
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100 < TS ≤ 300 ºC |
± 3.0 ºC |
± 3.0 ºC |
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300 < TS ≤ 1600 ºC |
± (0.05% of rdg. + 2.0 ºC) |
± 2.2 ºC |
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S |
0 ≤ TS ≤ 100 ºC |
± 5.2 ºC |
± 4.5 ºC |
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100 < TS ≤ 300 ºC |
± 3.0 ºC |
± 3.0 ºC |
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300 < TS ≤ 1760 ºC |
± (0.05% of rdg. + 2.0 ºC) |
± 2.2 ºC |
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B |
400 ≤ TS ≤ 600 ºC |
± 3.5 ºC |
± 3.5 ºC |
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600 < TS ≤ 1820 ºC |
± (0.05% of rdg. + 2.0 ºC) |
± 2.5 ºC |
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K |
-200 ≤ TS ≤ -100 ºC |
± (0.05% of rdg. + 2.0 ºC) |
± 1.5 ºC |
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-100 < TS ≤ 1370 ºC |
± (0.05% of rdg. + 1.0 ºC) |
± 0.8 ºC |
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E |
-200 ≤ TS ≤ -100 ºC |
± (0.05% of rdg. + 2.0 ºC) |
± 1.0 ºC |
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-100 < TS ≤ 800 ºC |
± (0.05% of rdg. + 1.0 ºC) |
± 0.8 ºC |
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T |
-200 ≤ TS ≤ -100 ºC |
± (0.1% of rdg. + 1.5 ºC) |
± 1.5 ºC |
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-100 < TS ≤ 400 ºC |
± (0.1% of rdg. + 0.5 ºC) |
± 0.6 ºC |
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J |
-200 ≤ TS ≤ -100 ºC |
± 2.7 ºC |
± 1.0 ºC |
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-100 < TS ≤ 100 ºC |
± 1.7 ºC |
± 0.8 ºC |
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100 < TS ≤ 1100 ºC |
± (0.05% of rdg. + 1.0 ºC) |
± 0.6 ºC |
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N |
-200 ≤ TS < 0 ºC |
± (0.1% of rdg. + 2.0 ºC) |
± 2.2 ºC |
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0 ≤ TS ≤ 1300 ºC |
± (0.1% of rdg. + 1.0 ºC) |
± 1.0 ºC |
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W |
0 ≤ TS ≤ 2000 ºC |
± (0.1% of rdg. + 1.5 ºC) |
± 1.8 ºC |
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R.J.C. |
± 0.5 ºC |
± 0.3 ºC |
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Temperature (RTD) *15 |
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Type |
Measurement range |
Accuracy |
Accuracy |
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Pt100 |
-200 ≤ TS ≤ 100 ºC |
± 1.0 ºC |
± 0.6 ºC |
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100 < TS ≤ 500 ºC |
± 0.8 ºC |
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500 < TS ≤ 850 ºC |
± 1.0 ºC |
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JPt100 |
-200 ≤ TS ≤ 100 ºC |
± 0.8 ºC |
± 0.6 ºC |
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100 < TS ≤ 500 ºC |
± 0.8 ºC |
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Pt1000 |
-200 ≤ TS ≤ 100 ºC |
± 0.8 ºC |
± 0.6 ºC |
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100 < TS ≤ 500 ºC |
± 0.8 ºC |
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A/D converter |
Sigma-Delta type, 16 bits (effective resolution: 1/40000 of the measuring full range) |
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Maximum |
Between |
20 mV to 2 V range: 60 Vp-p, |
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Channels ((-) / (-)) |
60 Vp-p |
600 Vp-p |
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Channel / GND |
60 Vp-p |
300 Vp-p |
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Max. voltage |
Between channels |
350 Vp-p (1 minute) |
600 Vp-p |
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Channel / GND |
350 Vp-p (1 minute) |
2300 Vrms AC (1 minute) |
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*11
The terminal "b" for using the RTD is connected each other across all channels.
*12
If the specifications of the temperature sensor is lesser or greater than the selected measurement range, GL840
can measure up to the specifications of the sensor.
*13
Subject to the following conditions:
· Room temperature is 23 oC ± 5 oC.
· When 30 minutes or more have elapsed after power has turned on.
· Filter is set to 10.
· Sampling rate is set to 1 sec, using 20-channel in GL840-M and 10-channel in GL840-WV.
· GND terminal is connected to ground.
*14
Wire size of thermocouple used is 0.32mm diameter in the T type and 0.65mm diameter in other types.
*15
Supports 3-wire type sensor.
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Item |
Model number |
Description |
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Input terminal (Multi-inputs) |
B-564 |
20ch input terminal, multi-input type |
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Input terminal (Withstand voltage |
B-565 |
20ch input terminal, withstand-high-voltage type |
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Base unit for input terminal |
B-566 |
Base unit for input terminal (B-564 or 566) |
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Connection cable |
B-567-05 |
Cable to connect GL840 and B-566, 50 cm long |
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B-567-20 |
Cable to connect GL840 and B-566, 2 m long |
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Wireless LAN unit |
B-568 |
WLAN adapter, IEEE802.11 b / g / n |
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Battery pack |
B-569 |
Rechargeable Lithium-ion battery (7.2 V, 2900mAh) |
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Bracket for DIN rale (GL840 main body) |
B-570 |
Bracket for DIN rail (GL840 main body), Build-to-order |
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Bracket for DIN rail (extension terminal) |
B-540 |
Bracket for DIN rail (Input terminal), Build-to-order |
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Input/Output cable for GL series |
B-513 |
2 m long (no clip on end of cable) |
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DC drive cable |
B-514 |
2 m long (no clip on end of cable) |
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Humidity sensor |
B-530 |
With 3 m long signal cable (with power plug) |
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Shunt resistor |
B-551-10 |
250 ohms (it converts the signal to the "1-5V" from the "4-20mA".) |
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AC power adapter |
ACADP-20 |
Input: 100 to 240 V AC, Output: 24 V DC |
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Temp & Humidity sensor |
GS-TH |
Temperature and humidity measurement |
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Illuminance & UV sensor |
GS-LXUV |
Illuminance and UV intensity measurement, cable 20cm long |
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Carbon Dioxide (CO2) sensor |
GS-CO2 |
CO2 measurement, cable 20cm long |
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Acceleration & Temp sensor |
GS-3AT |
Acceleration and temperature measurement, cable 20cm long |
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Thermistor input terminal |
GS-4TSR |
Temp measurement (using a Thermistor), cable 20cm long |
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Thermistor sensor (Normal type) |
GS-103AT-4P |
Temperature sensor (-40 to 105 ºC), 3m long, 4pcs/set |
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Thermistor sensor (Ultrathin type) |
