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Graphtec GL 820 Data Acquisition / Data Logger 20 Channel

Description

Modern conveniences such as Ethernet and USB 2.0 interfaces are included, along with a USB flash memory port, so you can easily get the data out of your GL820 and transfer it to your computer. Data are normally captured into the GL's large internal memory, at rates selectable from 10 ms to 1/hour! You can record for hours, days, or even weeks with the 12 MS memory. Expandable up to 200 channels!

We built it in 125 VAC RMS / 350 VDC isolation on all the analog channels, for a few reasons. First, it means you can hook up your GL midi LOGGER without the normal worry about ground loops, providing you more flexibility and control. Second, it just makes good technical sense to isolate the inputs, and is even a nice safety feature. Few products in this class provide this kind of isolation as standard...or even as an option!

With its dedicated USB port for flash drives, the GL820 makes it easy to transfer data on to your PC or laptop for direct processing.

Features

  • Built-in Ethernet and USB 2.0 interfaces
  • Compact 7.6”x4.8” and approx weight of 1lb
  • Direct recording capability to USB memory stick
  • 2GB Built-in Non-volatile memory retains data even after the GL800 is turned off
  • Voltage (20mV to 50V), Temp Thermo-couplers (K, E, J, T, N, R, S, T, B, W) and Humidity
  • Up to 200 Multi-function PhotoMOS relay isolated input channels
  • Optional battery pack provides up to 6 hours of continuous recording
  • Battery also functions as a UPS in the event of AC power failure
  • 16-bit A/D converters (14-bit processing)
  • Max Sample rate of 100 Samples/second
  • Statistical analysis functions

Specifications

Item

Description

Number of analog input channels

20 channel, Expandable up to 200 channels by unit of 20 channel

External input/output

Input *

Trigger or Sampling input 1 ch, Logic or Pulse input 4 ch

Output *

Alarm output 4 channels

Sampling interval

10 ms to 1 h (in 10ms to 50ms, voltage only and limited channel), External

Time scale

1 sec to 24 hour /division

Trigger function

Action

Start or stop capturing data by the trigger

Source

Start: Off, Input signal, Alarm, External * , Clock, Week or Time

Stop: Off, Input signal, Alarm, External * , Clock, Week or Time

Combination

OR or AND condition at the level of signal or edge of signal

Condition

 Analog: Rising, Falling, Window-in, Window-out

Pulse: Rising, Falling, Window-in, Window-out

Logic: Rising or Falling

Alarm function

Detecting method

Level or edge of signal

Condition

Analog: Rising, Falling, Window-in, Window-out

Pulse: Rising, Falling, Window-in, Window-out

Logic: Rising, Falling

Alarm output *

4 channels, Output type: Open collector (pull-up resistor 10 kΩ)

Pulse input function *

Accumulating count mode

Accumulating the number of pulses from the start of measurement

Range: 50, 500, 5 k, 50 k, 500 k, 5 M, 50 M, 500 M counts/F.S.

Instant count mode

Counting the number of pulses per sampling interval

Range: 50, 500, 5 k, 50 k, 500 k, 5 M, 50 M, 500 M counts/F.S.

Rotation count (RPM) mode

Counting the number of pulses per sec. and then it is converted to RPM

Range: 50 rpm, 500 rpm, 5 krpm, 50 krpm, 500 krpm, 5 Mrpm, 50 Mrpm, 500 Mrpm /F.S.

Max. input pulse rate

50 k pulses/sec or 50k counts per sampling interval, 16 bits counter is used

Calculation function

Between Channels

Addition, Subtraction, Multiplication and Division for analog input

Statistical

Select two calculations from Average, Peak, Max., Min., RMS

Search function

Search for analog signal levels, values of logic or pulse or alarm point in captured data

Interface to PC

Ethernet (10 BASE-T/100 BASE-TX), USB (Full speed)

Storage device

Built-in Flash memory (2 giga-bytes), USB memory device *

Data saving function

Captured Data

Direct saving of data into built-in Flash memory or USB memory device

Others

Setting conditions, Screen copy

Ring capturing mode

Function: ON/OFF, Number of capturing point: 1,000 to 2,000,000

(Size of the capture data will be limited to 1/3 of available memory)

USB memory device emulation

USB Memory emulation mode (Transfer or delete the file in built-in memory)

Engineering scale function

Set based on the reference point of the scaled output and input signal for each channel (Voltage measurement: four points are necessary to scale the output, Temperature measurement: two points are necessary to scale the output).

Display

Size

5.7 inch TFT color LCD VGA: 640 x 480 dots)

Formats

Waveform + Digital, Waveform only, Calculation + Digital, Expanded digital

Operating environment

0 to 45 °C, 5 to 85 %RH

(When operating with battery pack 0 to 40 °C, charging battery 15 to 35 °C)

Power source

AC adapter (100 to 240 V, 50/60 Hz), DC power (8.5 to 24 V DC, max. 26.4 V) * , Battery pack *

Power consumption

32 VA or lower (when operating with AC adapter, displaying LCD)

External dimensions (W×D×H)

approx. 232 x 152 x 50 mm

Weight

approx. 900 g (Excluding AC adapter and battery pack)

Standards

CISPR
CISPR 11
CISPR 14 - 1
CISPR 14 - 2
CISPR 14 - 2
CISPR 16 - 1
CISPR 16 - 2
CISPR 16 - 3
CISPR 16 - 4
CISPR 22
CISPR 24
IEC
IEC/TR EN 61000 - 1 - 1
IEC/TR EN 61000 - 2 - 1
IEC/TR EN 61000 - 2 - 3
IEC EN 61000 - 3 - 2
IEC EN 61000 - 3 - 4
IEC/TC EN 61000 - 3 - 5
IEC EN 61000 - 4 - 2
IEC EN 61000 - 4 - 3
IEC EN 61000 - 4 - 4
IEC EN 61000 - 4 - 5
IEC EN 61000 - 4 - 6
IEC EN 61000 - 4 - 7
IEC EN 61000 - 4 - 8
IEC EN 61000 - 4 - 9
IEC EN 61000 - 4 - 11
European
EN 50 081 part 1
EN 50 081 part 2
EN 55 011
EN 55 013
EN 55 014
EN 55 015
EN 55 020
EN 55 022
EN 55 024
EN 50 082 part 1
EN 50 082 part 2
EN 50 093
American
FCC Part 15
MIL-STD - 461E