Stevens Data Loggers and Acquisition Instruments

Stevens designs, manufactures and supports a wide range of data logging, acquisition and control (SCADA) instruments for our customers’ unique needs in intensive environmental monitoring and data collection applications. Stevens’ data loggers are designed for simplicity, scalability and durability for single locations or fully integrated networks containing multiple sites.

Please see the following chart for a comparison of the different data loggers that Stevens manufactures and sells. Click on a picture for more detailed information about a particular data logger.

SPECIFICATIONS DataLogic 3000 AxSys CCR DOT LOGGER VX1100 VX1004
  Stevens DataLogic 3000 Data Logger AxSys Data Logger CCR Data Logger Stevens DOT Data Logger VX1100 Data Logger VX1004 Data Logger
Analog - Single
Ended Input
8* 2 2 4 16 6
Analog - Differential
Ended Input
5* 0 0 0 8 0
Analog Voltage
Input Range
4 to 20 mA, 0 to 5 VDC 4 to 20 mA 4 to 20 mA 4 to 20 mA ±10V, ±5V, ±2.5V,
±250mV, ±25mV
0 to 5 volts
Differential Isolated Inputs 1 - 22 bit n/a n/a n/a n/a n/a
SDI-12 12* 8 8 191 10 10
RS-232 Independent
Serial Ports
4* 1 1 1 1 1
RS-485
Serial Ports
1* 0 0 0 0 0
Can Bus OPTIONAL NO NO NO NO NO
Quadrature Input 1* 1 1 0 0 0
Pulse Channels 1* 1 1 4 1 1
USB 2.0 Input/Output YES NO NO NO NO NO
NTSC & PAL
Camera/Video Input
OPTIONAL NO NO NO NO NO
10 Base-T
Ethernet Port
OPTIONAL NO NO NO NO NO
Sensor Power 24 VDC, 12 VDC, 5 VDC 12 VDC, 5 VDC 12 VDC, 5 VDC 24 VDC 12 VDC, 5 VDC 12 VDC, 5 VDC
Processor 32-bit ARM and dsPIC/PIC32 8-bit 8-bit 12-bit 12-bit 12-bit
Logging Interval 1 minute to 24 hours 1 second to 24 hours 1 minute to 24 hours 1 minute to 24 hours 1 minute to 24 hours 1 minute to 24 hours
Analog to Digital (A/D) Bits 12 12 12 12 NO NO
Control Outputs 0 2 2 0 4 4
Switch Excitation Voltage 5V, 12V and/or 24V YES YES 5 - 12 VDC YES YES
Data Memory
Storage
2 Gigabytes internal memory, with SD card storage expandable up to 8 Gigabytes 128 kbytes 128 kbytes 128 kbytes 128 kbytes 128 kbytes
Temperature Range -40 C to
+70 C
-40 C to
+70 C
-40 C to
+50 C
-40 C to
+70 C
-40 C to
+60 C
-40 C to
+60 C
MODBUS Protocol OPTIONAL NO NO OPTIONAL NO NO
VDC Power Requirements 8.6 - 16 10 - 17 10 - 17 10 - 17 9 - 16 8 - 16
Standby Current <4 mA 1.0 mA 150 mA 0.5 mA 0.5 mA 0.5 mA
Keypad OPTIONAL
FULL-COLOR LCD
TOUCH SCREEN
YES YES NO YES YES
Display OPTIONAL
FULL-COLOR LCD
TOUCH SCREEN
YES YES NO YES YES
Enclosure Anodized Aluminum NEMA-4 NEMA-4 Anodized Aluminum Anodized Aluminum Anodized Aluminum
Data Card Slot SD (SECURE DIGITAL)
UP TO 8 GIGABYES STORAGE
PCMCIA
256 kbytes
PCMCIA
256 kbytes
NO OPTIONAL NO
Real Time Clock (min/month) ±1
LEAP YEAR
AND TEMP. CORRECTED
±3 ±3 ±1 ±1 ±1
Size (W x H x D) inches 6.5 x 4.5 x 2.3 6.7 x 5.3 x 5.2 13.5 x 14.9 x 9.3 6.5 x 3 x 2.5 12 x 6.5 x 3.75 12.3 x 3.2 x 3.0
Size (W x H x D) mm

165 x 114 x 58

170 x 134 x 130

344 x 380 x 235 165 x 76 x 63 305 x 165 x 95 312 x 80 x 76
*Expansion options available