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Technical data

Power supply	+8 ... +15.2 V DC; typ. +12 V
Current consumption (at 12 V) active, measure active, not measured sleep, special inputs active sleep, clock only	approx. 60 mA approx. 38 mA approx. 7.5 mA approx. 0.7 mA
Protection level, inputs	up to 36 V (Protection against external voltage (static))
Display	graphics-capable DOT Matrix 122 x 32
Clock Type Accuracy Type of buffer battery Shelf life of buffer battery	Battery-buffered real time clock ±1 minutes/month (0 °C +50 °C) CR 2032; 3 V ≥ 5 years (recommend replacement after 5 years)
Interfaces	Infrared (IrDA), radiation angle 30 °, 2 x RS 232 C; RS 485; SDI-12

Inputs
Voltage inputs (5 V/10 V) R_i for GND-referenced voltages R_i for floating voltages Precision Resolution Measurement period	4 MOhm > 100 MOhm < 0.1 % FS 1 mV 350 ms
Current input (0(4) ... 20mA) R_i Precision Resolution Measurement period	typ. 400 Ohm typ. 0.1 %; max. < 0.3 % FS 1 µA 350 ms
Pt 100 Precision Resolution Measuring range Measurement period	± 0.1 K (without cable) 0.01 K –35 °C ... +85 °C 1.2 s
NTC (6k) Measuring range Precision Resolution Measurement period	–50 ... +100 °C ±0.1 K 0.05 K 600 ms
Conductivity Measuring range 0 µS ... 250 µS 250 µS... 2030 µS 2030 µS ... 100 mS Precision values < 10 mS Precision values> 10 mS TetraCon 96 Measurement Cell Cable length	Measurement frequency (28 Hz); Resolution 1µS; Measurement period approx. 2.7 s Measurement frequency (64 Hz); Resolution 1µS; Measurement period approx. 500 ms Measurement frequency (494 Hz); Resolution 10 µS dropping to 100 µS; Measurement period approx. 1.3 s < 0.1 % of measurement ±10 µS < 1.0 % of measurement ±100 µS Cell constant 0.609 cm^-1 ±1.5 %, NTC < ±0.2 °C Temperature drift < 30 ppm/°C max. 100 m
Impulse input Frequency Debouncing min. impulse duration max. contact resistance	0 ... 50 Hz 8.8 ms 8.8 ms 500 Ohm
Frequency input Frequency Precision 1 Hz ... 500 Hz 500 Hz ... 6 kHz Pulse width Precision 166 µs ... 500 µs 500 µs ... 5 ms 5 ms ...1000 ms Duty cycle (pos. impulse width/period duration) Precision 1 Hz ... 10 Hz 10 Hz ... 100 Hz 100 Hz ... 1 kHz 1 kHz ... 3 kHz	1 Hz ... 6 kHz ±0.1 Hz ±1.0 Hz 166 µs ...1000 ms < 3.0 % < 0.3 % < 0.1 % 0 ... 1 (Frequency 1 Hz ... 3 kHz) Duty cycle 0 ... 1 < ±0.1 % Duty cycle 0 ... 1 < ±1.0 % Duty cycle 0,2 ... 1 < ±2.0 % Duty cycle 0,4 ... 1 < ±2.3 %
SPI input with Thies wind input card Wind speed [0.1m/s] Wind direction [0 ... 360 °] Maximum wind speed [0,1m/s] Measurement period	vector mean (1 s/60 s) vector mean (1 s/60 s) per measurement 1 s

Outputs
Relay outputs Current resistance Voltage Leakage current	bounce-free max. 1.6 A; electron. short circuit protection with automatic recognition max. 28 VDC < 5 µA /28 VD
4 ... 20 mA (galvanically separated) External power Precision Resolution Load Ripple (20 mA) Load dependence Potential Insulation Temperature drift Power supply drift	max. 42 V < 0,1 % FS (at 20 °C and 12 V supply voltage) 2 µA < 350 Ohm (referenced to 8 V minimum supply voltage) < 100 µA eff. < 1 ‰ floating (galvanically separated) > 500 V < 100 ppm/Kelvin < 1 ‰/V
Output voltages +5 V V_bat –12 V	1 A loop power supply 100 mA

Data memory
Storage space available for measurements	917.000 Byte
Storage space needed per measurement per channel and day block info channel, per entry	8 Byte max. 24 Byte 8 Byte

EMC Limits
Resistance against electrostatic discharge (ESD)	complies with EN 61000-4-2 Test level 2 (4 kV contact discharge)
Resistance to electromagnetic fields	complies with EN 61000-4-3 Environment class 2 (3 V/m)
Resistance to transient disruptions (burst)	complies with EN 61000-4-4 Installation class 5 (4 kV)
Resistance to sudden electrical surges (surge)	complies with EN 61000-4-5 Installation class 5 (4 kV)
Interference, electrical/magnetic interference strength	complies with EN 55022 Class B (30 ... 1000 MHz)

Mechanical Limits
Dimensions L x W x H	216 mm x 142 mm x 48.5 mm
Weight	approx. 0.44 kg
Housing material	ABS
Type of protection	IP 30
Temperature range	–30 °C ... +70 °C

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