MRL-7 Data Logger

Device specifications

Power supply:

11.5 … 28 VDC; Overvoltage and reverse voltage protection

Solar panel supply: max. 40 W/12 V

MRL-7B: Internal lead-acid battery: 12

V/4 Ah, deep-discharge protected

Power consumption:

Active: <23 mA @12V

Standby: <0.6 mA @ 12V

Sensor supply

100 mA @ 5V

200 mA @ 12V

1x 1.10 A and 3 x 0.50 A @ switched supply voltage (max. 2 A in total)

Inputs

4x Analog 02.5 V, 16 bit (3 single ended,

1 differential)

2x Counter (one optionally as encoder) 1x Wind speed

1x Wind direction

1x RS-485 sensor or camera input 1x SDI-12 (MRL-7 as master)

1x Manual observer input (has no meas-

urement input; only accepts an offset)

Outputs

3x Switch output (each approx. 500 mA @ supply voltage)

1x RS-232 (1200...115200 Baud, ASCII pro-

tocol)

1x RS-485

1x USB

1x Bluetooth

Memory

4 MB internal flash memory (equivalent

to approx. 500,000 measurement values) 32 GB SD-card (write only)

Measurement

interval

1 s … 24 h

Mobile modem

2G, 3G, 4G - 3 FTP/HTTP servers

Functions: IP call, fixed IP, time-syn- chronization via NTP, e-Mail and SMS

messages

Operating tem-

perature

-30 … 60 °C (-22…140 °F), 10…95 %rH

Storage tem- perature, humid-

ity

-40 … 85 °C (-40…185 °F), 10…95 %rH

Protection rat-

ing

IP 67

Size L x W x H

MRL-7: 180 x 150 x 60 mm (7.09 x 5.91 x

2.36 inch)

MRL-7B: 180 x 150 x 90 mm (7.09 x 5.91 x

3.54 inch)

Weight

MRL-7: 1260 g (2.78 lb)

MRL-7B: 1610 g (3.55 lb)