Graphtec GL820 Specifications

Comprehensive Data Logger

20 channel Portable Logger

8

PulseHumidityTemp. LogicVoltage

20CH

Fast

Sampling

10ms

Wide LCD

5.7inch

20 insulated channels,
each with multifunction input capacity

Contains an insulated input system which ensures signals do not cause
any distortions among other channels. Suitable for recording voltage,
temperature, humidity, pulse, and logic signals.

20mV to 50V wide range

Supported 9 type of thermocouples: R, S, B, K, E, T, J, N, W

Measured the humidity easily using the optional sensor

Supports 4 channels pulse or logic digital I/O
using optional cable B-513.

Maximum 10ms Sampling 5.7 inch TFT colour LCD

Provides faster sampling rates for voltage

measurements.

Achieves up to 10ms sampling interval when

limiting the number of channels in use.

Utilises an industry leading 5.7-inch TFT
color LCD monitor
Providing enhanced ability to read data in
waveform and digital forms to measure
and analyze data in real time.

Built-in 2GB Flash memory
for reliable long term measurement

The 2GB Flash Memory enables a securelong term data measurement

usage without applying an external storage device.

Supports USB memory with Real-Time Swaps

Supports USB 2.0 memory sticks for external storage.

The GL820 saves measured data directly on to the USB

memory sticks. The device can be replaced during

measurement without loosing any data.

Ring memory function

The most recent data is saved when internal

(VGA: 640 x 480 dots) .

memory or external memory is configured in
ring memory mode.

Built-in

memory

2GB

Ring

memory

WWW.GRAPHTECAMERICA.COM/INSTRUMENTS

GL820 main unit specifications

Item
Number of analog input channels

External input
output

Sampling interval
Time scale
Trigger

function

Alarm function

Pulse input
function

Input
Output

Action
Source

Combination
Condition

Detecting method
Condition

Alarm output
Accumulating count

*8

mode

*8

*8

*8

Instant count mode

Rotation count (RPM)
mode

Max. input pulse rate

Calculation
function

Search function

Interface to PC
Storage device

Data saving
function

Ring capturing mode

USB memory device emulation
Engineering scale function

Display

Operating environment

Between channels
Statistical

Captured data
Others

Size
Formats

Power source

Power consumption

Weight

Software specifications

Item
Supported OS

Functions
GL820 settings control
Controlled units
Captured data
Displayed information
Display modes

Warning functions
File format conversions
Report functions

Description
Windows XP / Vista / 7 (32 bits and 64 bits edition)
Control GL820, Real-time data capture, Replay data, Data format conversion
Input settings, Memory settings, Alarm settings, Trigger settings

Up to 10 units or 500 channels
Transfers data in real-time (in binary or CSV format), saved data in GL820 or the USB memory
Analog waveforms, Logic waveforms, Pulse waveforms, Digital values
Y-T waveforms, Digital values, Report, X-Y graph (specified period of data, data reply only)
Sends E-mail to the specified address when the alarms occur
Converts the specified period data or all data to the CSV format (thinning function is available)
Creates the daily or monthly report automatically (can also export directly to Excel)

Description

20 ch, Expandable up to 200 ch by unit of 20 ch
Trigger or Sampling input 1 ch, Logic or Pulse input 4 ch

Alarm output 4 ch
10 ms to 1 h (in 10ms to 50ms, voltage only and limited channel), External
1 sec to 24 hour /division
Start or stop capturing data by the triggerr
Start: Off, Input signal, Alarm, External
Stop: Off, Input signal, Alarm, External
OR or AND condition at the level of signal or edge of signal
Analog: Rising, Falling, Window-in, Window-out
Pulse: Rising, Falling, Window-in, Window-out

Logic: Rising, Falling
Level or edge of signal
Analog: Rising, Falling, Window-in, Window-out
Pulse: Rising, Falling, Window-in, Window-out
Logic: Rising, Falling

4 channels, Output type: Open collector (pulled-up to 5 V by resistor 10 kΩ)
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.

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.

Counting the number of pulses per second 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.

50 k pulses/sec or 50k counts per sampling interval (16 bits counter is used)
Addition, Subtraction, Multiplication and Division for analog input
Select two calculations from Average, Peak, Max., Min., RMS
Search for analog signal levels, values of logic or pulse or alarm point

in captured data

Ethernet (10 BASE-T/100 BASE-TX), USB (Full speed)
Built-in Flash memory (2 giga-bytes), USB memory device
Direct saving of data into built-in Flash memory or USB memory device
Setting conditions, Screen copy
Function: ON/OFF, Number of capturing point: 1000 to 2000000 (size of the

capture data will be limited to 1/3 of available memory when in Ring Mode)

*8

, Clock, Week or Time

*8

, Clock, Week or Time

*9

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

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).

5.7 inch TFT color LCD (VGA: 640 x 480 dots)
Waveform + Digital, Waveform only, Calculation + Digital, Expanded digital
0 to 45 °C, 5 to 85 %RH

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

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

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

approx. 232 x 152 x 50 mm
approx. 900 g (Excluding AC adapter and battery pack)

*10

, Battery pack

*10

Analog input specifications

Item
Type of input terminal
Input method
Measurement

range

Voltage
Temperature

Humidity

Filter
Measurement

accuracy

Voltage

*11

Tempe-

Thermocouple

rature

R/S

B

K

E

T

J

N

W

RTD
Pt100
JPt100

A/D Converter
Maximum

input voltage

Withstand
voltage

*8

: Logic alarm cable (B-513) option is required.

Input signal of External sampling, Logic, Pulse; Maximum voltage: 24 V, Threshold: approx. 2.5 V, Hysteresis: approx. 0.5 V

*9 : Size of the USB memory device is unlimited. Maximum file size is limited to 2GB.

*10: DC drive cable (B-514) or battery pack (B-517) option is required.

*11: Subject to the following conditions;

• Room Temperature is 23°C ±5°C.

• When 30 minutes or more have elapsed after power was turned on.

• Filter is set to 10.

• Sampling rate is set to 1s with 20 channels.

• GND terminal is connected to ground.

Logic alarm cable
(B-513)

20ch extension
terminal set (B-538)

*12

: Operating environment: -25°C to 80°C

Pt1000

Between + / - terminal
Between channels
Between channel / GND

Between channels 350 V p-p (1 minute)
Between channel(-)/ GND

DC drive cable
(B-514)

Description
Screw terminal (M3 screw)
Scans by the photo-MOS-relay, all channels isolated, balanced input

20, 50, 100, 200, 500 mV, 1, 2, 5, 10, 20, 50 V, and 1-5 V/F.S.
Thermocouple: K, J, E, T, R, S, B, N, and W (WRe5-26)
Resistance Temperature Detectors (RTDs): Pt100, JPt100(JIS), Pt1000(IEC751)
0 to 100%

(using humidity sensor (B-530 optional), power is supplied to only one sensor)

Off, 2, 5, 10, 20, 40 (moving average in selected number)

0.1 % of F.S.
Measurement range

0 °C ≤ TS ≤ 100 °C

100 °C < TS ≤ 300 °C
R: 300 °C < TS ≤ 1600 °C
S: 300 °C < TS ≤ 1760 °C

400 °C ≤ TS ≤ 600 °C

600 °C < TS ≤ 1820 °C

-200 °C ≤ TS ≤ -100 °C

-100 °C < TS ≤ 1370 °C

-200 °C ≤ TS ≤ -100 °C

-100 °C < TS ≤ 800 °C

-200 °C ≤ TS ≤ -100 °C

-100 °C < TS ≤ 400 °C

-200 °C ≤ TS ≤ -100 °C

-100 °C < TS ≤ 100 °C
100 °C < TS ≤ 1100 °C

0 °C ≤ TS ≤ 1300 °C
0 °C ≤ TS ≤ 2000 °C

Reference Junction Compensation (R.J.C.): ±0.5 °C

Measurement range

-200 °C to 850 °C (FS = 1050 °C)

-200 °C to 500 °C (FS = 700 °C)

-200 °C to 500 °C (FS = 700 °C)
ΣΔ type, 16 bits (effective resolution: 1/40000 of measuring full range)
60 V p-p
60 V p-p

60 V p-p

Measurement accuracy

± 5.2 °C
± 3.0 °C
± (0.05 % of reading + 2.0 °C)
± (0.05 % of reading + 2.0 °C)

± 3.5 °C
± (0.05 % of reading + 2.0 °C)

± (0.05 % of reading + 2.0 °C)
± (0.05 % of reading + 1.0 °C)
± (0.05 % of reading + 2.0 °C)
± (0.05 % of reading + 1.0 °C)

± (0.1 % of reading + 1.5 °C)
± (0.1 % of reading + 0.5 °C)

± 2.7 °C
± 1.7 °C
± (0.05 % of reading + 1.0 °C)
± (0.1 % of reading + 1.0 °C)
± (0.1 % of reading + 1.5 °C)

Measurement accuracy
±1.0 °C
±0.8 °C

±0.8 °C

350 V p-p (1 minute)

Battery pack
(B-517)

Humidity sensor

12

(B-530) *

Extension terminal
base kit (B-537)

Standard accessories

Item

AC adapter
CD-ROM

Quick Start Guide

Options and accessories

Item

Logic alarm cable
DC drive cable
Battery pack
Humidity sensor

Extension terminal base kit
20 ch extension terminal set

Description
100 to 240 V AC, 50 / 60 Hz (with specified type of power cord)
User’s manual (PDF format), Application software

Model number
B-513
B-514
B-517

*12

B-530

B-537
B-538

17462 Armstrong Avenue

Irvine, CA 92614

Remarks
2 m long (no clip on end of cable)
2 m long (no clip on end of cable)

1 piece (7.4 V 2200 mAh, 17Wh)

3 m long (with power plug)
Terminal base, cable
Terminal base, terminal unit (20 ch), fixing plate

Quantity
1 set

1 piece
1 copy