USER MANUAL
TYPE ML-2012/13
Manufacturers of low power instruments
page 30
4.13 Transmission of the data log file
When data is sent to the receiver (by means of email, ftp, or tcp) the user can choose which records he
wants to use as output. So a user can decide to output only D-records to the data presentation-server (by
means of tcp) and, for example, the system records to his private email. In this case, only in case of bad
performance of the data logger, an email with system information is send. This is because S-records are
written by the data logger only in case of special events. Examples of these events are: SD-card failures,
A change of configuration, a timeout of a sensor, and a retry of sending data via the modem.
Here an example of an email with S and D records;
4.14 Input-drivers
Input-drivers obtain data from sensors. Various sorts of sensors can be connected to the data logger.
When a sensor needs a “warm-up time” the power output switch can be used to power the sensor before
the measurement is taken. The maximum time of a power delay is 5 minutes
Note:
The Power Switch output is consuming a lot of power, so try to minimize this. Consult the manual of the
sensor for warm up times. A warm up time of 5 minutes is possible and can be used in rare situations, but
the battery-life will be shortened enormously. In such rare cases, consult your local YDOC-supplier for a
calculation of battery-life, before exploiting your data logger.
4.14.1 Analog sensors
Analog inputs 1 to 4 are factory-calibrated inputs with 12 bit ADC resolution. Analog input 5 and 6 are
factory pre-calibrated amplified differential inputs with 16 bit ADC resolution.
Input
Range
Accuracy
Impedance
1
4 .. 20mA
<0.1%
150 Ohm
2
4 .. 20mA
<0.1%
150 Ohm
3
4 .. 20mA
<0.1%
150 Ohm
4
4..20mA
<0.1%
150 Ohm
5 (ML-2013 only)
0..250/500/1000/2000mV <0.05% or <0.01%*
1 MOhm
6 (ML-2013 only)
0..10/20/40/80mV
<0.5% or <0.01%*
1 MOhm
To gain an accuracy of <0.01% the user should perform a two point calibration himself, taking the whole
chain into account (e.g. Wheatstone bridge and Excitation). A load cell can be calibrated by measuring it
without load and with an accurate known load (e.g. a calibrated weight).
L;RCi;Rest Capacity;%;PTi;Processor
Temperature;C;Vi;Voltage;V;TMP;Temperature;C;PRS;Pressure;psi
S;110922202054;CFG_RESET
S;110922202054;CFG_CHANGED;Brasil_3002389
S;110922202124;MODEM_WDT;STATE 10
D;110922203000;RCi;99;PTi;59.5;Vi;3.6;TMP;22.1;PRS;15