Manual – 2024F Neon Bore Hole Telemetry Module
Unidata Manual - 2024F Neon Bore Hole Telemetry Module - 20 04 2016.docx
Page 5
3.0
TERRESTRIAL NBHTM SETUP AND TEST
The Neon Bore Hole Metering Module uses a SIM card which needs to be installed. It
should then connect to the Cellular network within a few seconds of powering on.
Note the SIM card must have the security PIN number switched off or disabled. This
needs to be done by using the SIM card in a normal mobile phone.
4.0
NBHTM POWER REQUIREMENTS
4.1 Internal
Power
The NBHTM Terminals can be powered by an internal battery and / or with an external
battery supply. The recommended batteries are SAFT Lithium batteries which are
specified in this manual. The Lithium batteries provide high inrush current required for
modern cellular hand phones.
The NBHTM - 3G has one Lithium Battery for the internal battery supply.
4.2 External
Power
If required the NBHTM can be powered by an external supply of 6 to 24VDC @ 300mA
and 30uA standby. Unidata recommends 12AH 6V Gel Cell-type recharge storage
batteries as a good external supply. External instrumentation must be separately
powered if more than 500uA is required. The download schedule is the largest consumer
of power.
The Continuous Drain Equivalent rating can be used to size the external power
requirements and duration of external power supplies. However, external power sources
should have an additional 100uA at 12V or 50uA at 6V continuous drain added, (due to
parasitic losses in the NBHTM circuitry).
The decision to use an external power supply should be based on the projected or known
frequency of battery changes, i.e. if a high download schedule is required and frequent
battery replacement is going to prove difficult or expensive, then an external power supply
is desirable.
4.3
Battery Life Table
Approximate
NBHTM - 3G
Battery Life
Approximate
Download
Schedule
Approximate
Scan Rate
Approximate
Log Interval
Approximate
Continuous
Drain Equiv
5 years
1 per day
5 secs
15 minutes
0.12 mA
4 years
4 times per
day
5 secs
15 minutes
0.21 mA
1 year
1 per hour
5 secs
15 minutes
0.53 mA
52 days
1 per 5
minutes
5 secs
1 minute
5.2 mA
10 days
1 per minute
5 secs
5 seconds
26 mA
Table 1
