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SISGEO

CRD-400 Multipurpose Readout

InfrastructureGeotechnical Instrumentation

The CRD-400 Multipurpose Readout is a new generation single-channel multipurpose readout designed to take readings of all Sisgeo Instruments, both electric and vibrating wire. CRD-400 permits readings in both electrical and engineering units; the wide display shows battery level in every windows. The readout is furnished travel bag, battery charger, 6 clips cable and CD-ROM manual. High accuracy (0.01% FS), wide variety of measures and an extremely competitive price, make of CRD-400 a unique product on the market, able to match the most demanding needs. More info.↗

Quantity

Specification

Type of measurements	mA - mV - V - mV/V - °C - Hz (µsec - digit - µε)
A/D converter	24-bit Sigma-Delta ADC (22 true bit)
Range and power supply	Current loop (2 wires): range 0÷21 mA - Power supply: 24V DC Transmitter (3 wires): range 0÷21mA - Power supply: 24V DC Voltage (4 wires): range ±10V - Power supply: 24V DC Wheatstone bridge (6 wires): range ±10 mV/V - Power supply: 5 V DC Servo-inclinometer: range ±10000 mV - Power supply: ±12V DC Platinum RTD (Pt100): range -150°C to +150°C - Power supply: 1 mA Thermistor (NTC): range -30°C to +150°C - Power supply: 0.04mA, 0.1mA, 1mA Vibrating Wire: range 400Hz to 6000Hz - Excitation sine wave signal (adaptive): ±10 V
Reading resolution	1µA at FS 20mA - 1µV at FS ±20mV - 10µV at FS ±1V - 100µV at FS ±10V 0.001mV/V at FS 10mV/V - 0.1°C for PT100 - 0.1°C for NTC 0.1 Hz at FS from 400 to 6000Hz
Accuracy	0.01% FS (0.1% for Voltage and Servo-inclinometer, 0.2% FS for PT100 and NTC)
Temperature drift	0.001 % FS / °C
Rechargeable battery	4 x AA, NiMH, 2400 mAh
Operating time	min. 4h (constant use, 24 Vdc @ 20 mA @ 25 °C, maximum backlight, 2400 mAh batteries) min. 6h (constant use, 24 Vdc @ 20 mA @ 25 °C, 50% backlight, 2400 mAh batteries)
Battery charger	Programmable charger, IP41, input voltage: 100-240 V AC, 50-60 Hz, 1.3A
Display	Amorphous silicon TFT LCD panel with LED backlight unit, 320 x 240, 3.5”, sunlight reliability
Operating temperature	from -20°C to +60°C
Protection Degree	IP67
Material	ABS