20 Channel Midi Data Logger Expandable to 200 Channels
Graphtec Recording Device for Voltage, Temp, Humidity, Logic and Pulse w/ Multifunction Input
The Graphtec GL820 is a compact, lightweight multi-channel Data Logger. The standard configuration has 20 isolated input channels and can be expanded in 20 channel increments up to a total of 200 channels.
The GL-820 features a high resolution 5.7" TFT color display and an easy to navigate menu system for in-field changes to set up parameters.
Data can be captured in a variety of ways. Save directly to the 2GB internal flash memory or to a hot swappable USB memory stick. You can also save directly to a network drive via Ethernet or to a PC via USB cable. The Web & FTP server functions built in to the GL820 allow for control and monitoring and data transfer from a remote location.
- 20 Isolated Input channels, expandable to 200
- Sample Up To 10 times per second (100ms) Using 10 Channels or Less
- Sample Up To 5 times per second (200ms) Using 11 Channels or More
- Accepts voltage or thermocouple inputs and optional cable inputs for (4) pulse/Logic or (1) Humidity
- Specifications
- Documentation
- Application Notes
- Purchase
GL820 Data Logger Specifications
| Number of Channels |
20 Analog Signal Input Channels
(Expandable to 200 Channels using #B-537 and #B-538) |
| Input Channels |
Types: Trigger (1 Channel), Logic/Pulse (4 Channels)
Max. Input Voltage: 0 to 24 Volts (Single-Ended Ground)
Input Threshold Voltage: Approx. +2.5 Volts
Hysteresis: Approx. 0.5 Volts (+2.5 Volts to + 3 Volts)
Method: Scans by the Photo-MOS-Relay, All Channels Isolated
Terminal Type: Screw Terminal (M3 Screw) |
| Alarm Output |
Number of Channels: 4
Output Format: Open Collector Output (5 Volts, 10 kΩ Pull-Up Resistance) |
| Storage Devices |
Built-in Flash Memory (2 GB)
USB Memory Device |
| Sampling Interval |
Sampling Interval up to 1 Hour.
The Fastest Sampling Rates and the Restrictions:
100ms (10 Times per Second): Up to 10 Channels at a Time
200ms (5 Times per Second): 11 or More Channels at a Time |
| Backup Functions |
Setup Parameters: EEPROM
Clock: Lithium Battery |
| Clock Accuracy |
±0.002% (50 Seconds per Month) @ 23.0°C |
| Operating Environment |
Temperature: 0 to 45°C
Humidity: 5 to 85% RH (Non-condensing) |
| Power Source |
AC Adapter: 100 to 240 Volts AC, 50/60 Hz (Included)
DC Input: (8.5 to 24 VDC; Max. 26.4 Volts)*
Battery Pack: 7.4 VDC (2200 mAh)**
Note:
* With Optional DC Drive Cable (Part # B-514)
** With Optional Battery Pack (Part #B-517). Up to 2 Batteries Can be Attached. |
| Measurement Ranges |
Voltage: 20, 50, 100, 200, 500mV;
1, 2, 5, 10, 20, 50V; 1 to 5 Volts FS
Thermocouple: Type K, J, E, T, R, S, B, N and W Supported
RTD: PT100 (Spec IEC751), JPT100 (Spec JIS), PT1000 (Spec IEC751)
Humidity: 0 to 100% (w/ Optional #B-530 Humidity Sensor) |
| Measurement Accuracy |
Voltage:
>> 0.1% Full Scale
Type R Thermocouple:
>> 0°C ≤ TS ≤ 100°C: ±5.2°C
>> 100°C < TS ≤ 300°C: ±3.0°C
>> 300°C < TS ≤ 1600°C: ±(0.05 % of Rdg + 2.0°C)
Type S Thermocouple:
>> 0°C ≤ TS ≤ 100°C: ±5.2°C
>> 100°C < TS ≤ 300°C: ±3.0°C
>> 300°C < TS ≤ 1760°C: ±(0.05 % of Rdg + 2.0°C)
Type B Thermocouple:
>> 400°C ≤ TS ≤ 600°C: ±3.5°C
>> 600°C < TS ≤ 1820°C: ±(0.05% of Rdg + 2.0°C)
Type K Thermocouple:
>> -200°C ≤ TS ≤ -100°C: ±(0.05% of Rdg + 2.0°C)
>> -100°C < TS ≤ 1370°C: ±(0.05% of Rdg + 1.0°C)
Type E Thermocouple:
>> -200°C ≤ TS ≤ -100°C: ±(0.05% of Rdg + 2.0°C)
>> -100°C < TS ≤ 800°C: ±(0.05% of Rdg + 1.0°C)
Type T Thermocouple:
>> -200°C ≤ TS ≤ -100°C: ±(0.1% of Rdg + 1.5°C)
>> -100°C < TS ≤ 400°C: ±(0.1% of Rdg + 0.5°C)
Type J Thermocouple:
>> -200°C ≤ TS ≤ -100°C: ±2.7°C)
>> -100°C < TS ≤ 100°C: ±1.7°C)
>> 100°C < TS ≤ 1100°C: ±(0.05% of Rdg + 1.0 °C)
Type N Thermocouple:
>> 0°C ≤ TS ≤ 1300°C: ±(0.1% of Rdg + 1.0°C)
Type W Thermocouple:
>> 0°C ≤ TS ≤ 2000°C: ±(0.1% of Rdg + 1.5°C)
Reference Junction Compensation: ±0.5°C |
| Display |
Size: 5.7" TFT Color LCD (VGA 320 x 240 pixels)
Formats: Waveform + Digital Values, Waveform Only, Current and Captured Signal Waveform, Digital Values Only |
| A/D Converter |
ΣΔ Type; 16 Bits (Effective Resolution: 1/40,000 of Full Range) |
| Data Saving Function |
Captured Data: Direct Saving of Data into 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) |
| Temperature Coefficient |
Gain: 0.01% of FS/°C
Zero: 0.02% of FS/°C
Note: Occurs When Sampling Speed is 10, 20 or 50 ms |
| Withstand Voltage |
Between Input Terminal / Input Terminal: 350V p-p (1 Minute)
Between Input Terminal / GND: 350 V p-p (1 Minute) |
| Maximum Input Voltage |
Between ± Terminals: 60Vp-p
Between Input Terminal / Input Terminal: 60V p-p
Between Terminal / GND: 60Vp-p |
| Common Mode Rejection Ratio |
At Least 90 dB (50/60 Hz; Signal Source 300Ω or Less |
| Noise |
At Least 48 dB (with +/- Terminals Shorted) |
| OS Compatibility |
Windows XP, Vista and 7 (32 and 64 Bit Editions) |
| Interface to PC |
USB (Full Speed)
Ethernet (LAN) |
| Dimensions |
232mm x 152mm x 50mm |
| Weight |
900g (Excluding AC Adapter and Battery) |
GL820 Data Logger Documentation
Quick Start Guide (2.6MB .pdf)
User Manual (15.2MB .pdf)
 |
GL820 Midi Data Logger
>> Accepts Voltage, Temp, Humidity, Pulse and Logic Inputs
>> 20 Isolated Channels with 16-bit ADC resolution
>> 2GB Internal Data Storage and External USB Memory Drive
>> Includes Software, AC Adapter and User Manual
|
Price: $2,295.00
Part #: GL820
|
- Accessories
(Optional)
- Sensors
(Optional)
Optional Accessories for GL820 Midi Logger
 |
20-Channel Extension Terminal Set
>> 20 Channel Terminal
>> Extension Terminal Base Unit
>> Connection Plate
>> Screws
|
Price: $650.00
Part #: B-538
|
 |
Graphtec Extension Terminal Base Set
>> Extension Terminal Base Unit
>> Cable
|
Price: $330.00
Part #: B-537
|
 |
Logic Alarm Cable
>> (4) Logic Inputs
>> (4) Alarm Outputs
>> Cable Length: 2 Meters
|
Price: $95.00
Part #: B-513
|
 |
DC Drive Cable
>> 2 Meter Cable
|
Price: $50.00
Part #: B-514
|
 |
Graphtec Battery Pack
>> Capacity: 7.2 Volts/ 2200 mAh
>> Battery Type: Lithium Secondary Battery
>> Running Time: 2.5 Hours to 9.0 Hours
>> Charging Method: Mount in the Main Unit
>> Charging Time: 4 to 8 Hours
>> Operation Environment: 15°C to 40°C
|
Price: $135.00
Part #: B-517
|
 |
Replacement AC Adapter
>> Compatible with GL220 and GL820
|
Price: $48.00
Part #: 682124530
|
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Yellow Xtreme Protective Case
>> Yellow Waterproof, Crushproof Case
>> Inside Dimension: 11.93" x 9.02" x 4.02"
>> Outside Dimension: 12.81" x 10.36" x 4.64"
>> Conforms to MIL-STD-810F Transit
>> Includes Customizable Foam Inserts
|
Price: $63.00
Part #: T6000.2
|
 |
Black Xtreme Protective Case
>> Black Waterproof, Crushproof Case
>> Inside Dimension: 11.93" x 9.02" x 4.02"
>> Outside Dimension: 12.81" x 10.36" x 4.64"
>> Conforms to MIL-STD-810F Transit
>> Includes Customizable Foam Inserts
|
Price: $63.00
Part #: T6000.3
|
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Cole Parmer 12" Length Cable Adapter, Type K
|
Price: $15.00
Part #: 93786-02
|
Optional Sensors for GL820 Midi Logger
 |
Graphtec Humidity Sensor
>> Temperature Range: -25°C to 80°C
>> Humidity Range: 0 to 100% RH
>> RH Accuracy: ±3% RH (5 to 98%RH at 25°C)
>> Response Time: 15 Seconds (90% Response Time When Membrane Filter Installed
>> Cable Length: 3 Meters
|
Price: $470.00
Part #: B-530
|
 |
Welded Tip Teflon Thermocouple w/ 72" Bare Wire Leads
>> Operating Range: -75°C to 250°C
>> Leads: 72" Teflon Insulated Twisted Pair Bare Wire Leads
>> Available in Type J, K, T and N
|
| Quantity | Price Each | | 1 - 9 | $10.00 | | 10 - 25 | $9.00 | | 26+ | $8.00 |
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Welded Tip Teflon Thermocouple w/ 180" Bare Wire Leads
>> Operating Range: -75°C to 250°C
>> Leads: 180" Teflon Insulated Twisted Pair Bare Wire Leads
>> Available in Type J, K, T and N
|
| Quantity | Price Each | | 1 - 9 | $20.00 | | 10 - 25 | $16.00 | | 26+ | $14.00 |
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