Campbell GRANITE 6 Specifications

GRANITE 6 Specifications

Electrical specifications are valid over a -40 to +70 °C, non­condensing environment, unless otherwise specified. Extended
electrical specifications (noted as XD in specifications) are valid
over a -55 to +85 °C non-condensing environment.
Recalibration is recommended every three years. Critical
specifications and system configuration should be confirmed
with Campbell Scientific before purchase.

Real-Time Clock:

l Battery backed while external power is disconnected
l Resolution: 1 ms
l Accuracy: ±3 min. per year, optional GPS correction to

±10 µs; 5.7 ppm

Wiring Panel Temperature: Measured using a thermistor,
located on the analog board.

System specifications 1

Physical specifications 1

Power requirements 1

Power output specifications 2

Analog measurement specifications 3

Pulse measurement specifications 4

Digital input/output specifications 5

Communications specifications 6

Standards compliance specifications 6

Warranty 6

Terminal functions 7

System specifications

Processor: Renesas RX63N (32-bit with hardware FPU, running
at 100 MHz)

Memory:

l Total onboard: 128 MB of flash + 4 MB battery-backed

SRAM

o

Data storage: 4 MB SRAM + 72 MB flash
(extended data storage automatically used for
auto-allocated Data Tables not being written to
a card)

o

CPU drive:30 MB flash

o

OS load:8 MB flash

o

Settings:1 MB flash

o

Reserved (not accessible): 10 MB flash

l Data storage expansion: Removable microSD flash

memory, up to 16 GB

l USB host provides for portable data storage on a mass

storage device (MSD). Not intended for long term
unattended data storage other than what is available
with TableFile().

Program Execution Period: 1 ms to 1 day

Physical specifications

Case Material: Stainless Steel 304 and Aluminum 6061

Dimensions: 21.4 x 12.0 x 5.0 cm (8.4 x 4.7 x 2.0 in); additional
clearance required for cables, wires, and antennas.

Weight/Mass: 0.86 kg (1.9 lb)

Power requirements

Protection: Power inputs are protected against surge, over­voltage, over-current, and reverse power. IEC 61000-4 Class 4
level.

CHG Terminals:

l Voltage Input: 16 to 32 VDC
l Input Current Limit at 12 VDC:

o

1.2 A @ 20 °C maximum

BAT Terminals:

l 10 to 18 VDC
l 19 VDC sustained voltage limit without damage;

transient voltage protected

l 2.5 A max current at 12 VDC at 20° C

External Batteries:

l Float charge on BAT terminal
l 12 VDC
l Valve-regulated, lead-acid (VRLA)
l 2 to 24 Ah battery typical

USB Device Power: Functions that will be active with USBDevice
5 VDC include sending programs, adjusting data logger
settings, and making some measurements. If USB Device is the
only power source, then the CS I/O port and the 12V and SW12
terminals will not be operational.

Internal Lithium Battery: 1/2AA, 1.2 Ah, 3.6 VDC (Tadiran
L5902S) for battery-backed memory and clock. 1.5-year life
with no external power source.

Campbell Scientific, Inc.

© 2014, 2021

January 27, 2021

Average Current Drain:

Assumes 12 VDC on BAT terminals — add 2 mA if using CHG
terminals.

l Idle: <1 mA
l Active 1 Hz Scan: 3 mA
l Active 20 Hz Scan: 67 mA
l Serial (RS-232/RS-485): Active + 25 mA
l Ethernet Power Requirements:

o

Ethernet 1 Minute: Active + 1 mA

o

Ethernet Idle: Active + 4 mA

o

Ethernet Link: Active + 47 mA

Vehicle Power Connection: When primary power is pulled from
the vehicle power system, a second power supply OR charge
regulator may be required to overcome the voltage drop at
vehicle start-up.

Wi-Fi Additional Current Contribution at 12 VDC:

Mode Wi-Fi Option

Client Mode 7 mA idle, 70 mA communicating

Access Point Mode 62 mA idle, 70 mA communicating

Sleep <1 mA

Power output specifications

System power out limits (when powered with
12VDC)

Temperature (°C) Current Limit1(A)

–40° 3.88

0° 2.98

20° 2.50

50° 1.80

70° 1.35

85° 1.00

1

Limited by self-resetting thermal fuse

SW12 current limits

Temperature (°C) Current Limit1(mA)

70° 640

85° 500

1

Thermal fuse hold current.

5 V fixed output

5V: One regulated 5 V output. Supply is shared between the 5V
terminal and CS I/O pin 1.

l Voltage Output: Regulated 5 V output (±5%)
l Current Limit: 250 mA

U and C as power output

l C Terminals:

o

Output Resistance (Ro): 150 Ω

o

5 V Logic Level Drive Capacity: 10 mA @ 3.5 VDC

o

3.3 V Logic Level Drive Capacity: 10 mA @ 1.8
VDC

ll U Terminals:

Voltage Excitation Max

Current @ ±2500 mV

Current Excitation Max

Current

5 V Logic Level Output

Resistance (Ro)

5 V Logic Level Max Current

@ 3.5 V

3.3 V Logic Level Output
Resistance (Ro)

3.3 V Logic Level Max
Current @1.85 V

U odd

terminals

±25 mA ±25 mA

±2500 µA ±2500 µA

75 Ω 150 Ω

20 mA 10 mA

73 Ω 145 Ω

20 mA 10 mA

U even

terminals

12 V and SW12 V power output terminals

U odd terminals:U1, U3, U5, U7, U9, U11.
U even terminals:U2, U4, U6, U8, U10, U12

12V, SW12-1, and SW12-2: Provide unregulated 12 VDC power
with voltage equal to the Power Input supply voltage. These
are disabled when operating on USB power only.

SW12 current limits

Temperature (°C) Current Limit1(mA)

–40° 1600

0° 1290

20° 1100

50° 830

CSI/O pin 1

5 V Logic Level Max Current: 200 mA

Voltage and current excitation specifications

A 12-bit DAC produces voltage and current excitation. When
used for resistance measurement, excitation is active only
during measurement.

Voltage excitation

Terminals: U1 - U12

Range: ±2500 mV

Resolution: 0.6 mV

GRANITE 6 Specifications | January 27, 2021 2

Voltage Excitation Absolute Accuracy:

l 0 to 40 °C: ±(0.1% of setting + 1.2 mV)
l –40 to 70 °C: ±(0.1% of setting + 1.5 mV)
l –55 to 85 °C (XD): ±(0.1% of setting + 1.6 mV)

Maximum Source or Sink Current: ±25 mA

Current excitation

Terminals: U1 - U12

Range: ±2.5 mA

Resolution: 0.6 µA

Current Excitation Absolute Accuracy):

l 0 to 40 °C: ±(0.11% of setting + 2.0 μA)
l –40 to 70 °C: ±(0.12% of setting + 2.5 μA)
l –55 to 85 °C (XD): ±(0.13% of setting + 3.0 μA)

Compliance Voltage: ±5 V

Analog measurement specifications

12 universal (U) terminals individually configurable for voltage,
thermocouple, thermistor, current loop, ratiometric, static
vibrating wire, and period average measurements, using a 24­bit ADC. One channel at a time is measured.

Voltage measurements

Terminals:

l Differential Configuration (H/L): U1/U2- U11/U12
l Single-Ended Configuration: U1 – U12

Input Resistance: 20 GΩ typical

Input Voltage Limits: ±5 V

Sustained Input Voltage without Damage: ±20 VDC

DC Common Mode Rejection:

l > 120 dB with input reversal
l ≥ 86 dB without input reversal

Normal Mode Rejection: > 70 dB @ 60 Hz

Input Current @ 25 °C: ±2 nA typical

Filter First Notch Frequency (fN1) Range: 5 Hz to 93 kHz (user
specified)

Analog Range and Resolution:

Single-Ended

and Differential

without Input

Reversal

RMS

2

(µV)

30.0

5.5

1.8

Bits

18
18
17

2

Notch

Frequency

(fN1) (Hz)

15000

Range

(mV)

±5000

±1000

±200

1

Differential

with Input

Reversal

RMS

(µV)

Bits

20.0

4.0

1.6

19
19
18

Differential

with Input

Reversal

Notch

Frequency

(fN1) (Hz)

5

1

Range overhead of ~5% on all ranges guarantees that full-scale

values will not cause over range

2

Typical effective resolution (ER) in bits; computed from ratio of

full-scale range to RMS resolution.

3

50/60 corresponds to rejection of 50 and 60 Hz ac power mains

noise.

Range

(mV)

±5000

±1000

±200

1

RMS

(µV)

0.60

0.12

0.05

Bits

24
24
23

Single-Ended

and Differential

without Input

Reversal

RMS

2

(µV)

4.9

1.0

0.22

Bits

20
20
20

Accuracy (does not include sensor or measurement noise):

l 0 to 40 °C: ±(0.04% of measurement + offset)
l –40 to 70 °C: ±(0.06% of measurement + offset)
l –55 to 85 °C (XD): ±(0.08% of measurement + offset)

Voltage Measurement Accuracy Offsets:

Typical Offset (µV RMS)

Range

(mV)

Differential

with Input

Reversal

Single-Ended or

Differential

without Input Reversal

±5000 ±10 ±40

±1000 ±5 ±12

±200 ±2 ±6

Measurement Settling Time: 20 µs to 600 ms; 500 µs default

Multiplexed Measurement Time:

Measurement time = INT(multiplexed measurement time •
(reps+1) + 2ms

Example fN1

(Hz)

Differential

with Input

Reversal

1

Time2(ms) Time2(ms)

Single-Ended or

Differential

without Input Reversal

15000 2.8 1.4

60 36 18.1

50 42.07 21.3

5 402.7 201.4

1

Notch frequency (1/integration time).

2

Default settling time of 500 µs used.

2

50/60

±5000

3

±1000

±200

1.2

0.24

0.10

23
23
22

5.0

1.1

0.24

20
20
20

GRANITE 6 Specifications | January 27, 2021 3