Specifications
Instrument
| Parameter | Value |
|---|---|
Storage |
240 million readings |
Power |
24 D-type cells |
External power |
4.5V to 30V |
Communications |
Internal: USB-C; external: USB and RS-232/485 |
Clock drift |
±60 seconds/year |
Depth rating |
260m |
Housing material |
Plastic |
Dimensions |
~562.5mm x Ø140mm |
Weight (with batteries) |
11.7kg in air, 2.8kg in water |
Temperature
| Parameter | Value |
|---|---|
Range |
-5°C to 35°C |
Initial accuracy |
±0.002°C |
Resolution |
0.00005°C |
Typical stability |
±0.002°C/year |
Time constant |
<2min (embedded) |
Pressure
| Parameter | Value |
|---|---|
Range |
20/55/125/190/260dbar |
Initial accuracy |
±0.01% full scale |
Resolution |
100ppb (at 1Hz sampling rate) |
Power supply selection
If connected, an external power supply will be used preferentially over the internal batteries as long as the voltage remains 4.5V or greater. If it drops below 4.5V or complete disconnection occurs, the system automatically switches to the internal batteries.
Clock
The instrument’s clock is maintained during brief disconnections. This time is usually sufficient to change batteries or replace desiccants.
USB-C power
The USB-C cable provides power sufficient for configuration or data download. However, the instrument requires an internal or external power supply to perform sampling.
Deployment estimates (with lithium thionyl chloride cells)
| Speed | Burst samples | Interval | Time | # of samples |
|---|---|---|---|---|
16Hz |
- |
Continuous |
64 days |
88 million |
4Hz |
4096 |
120min |
4.9 years |
88 million |
1s |
- |
Continuous |
2.8 years |
88 million |
1s |
512 |
30min |
5.3 years |
88 million |
1s |
512 |
60min |
10+ years |
88 million |
External MCBH-6-MP connector pinout
|
Pin No. |
USB |
RS-232 |
RS-485 |
1 |
Ground |
|||
2 |
Power +4.5 to +30V |
|||
3 |
N/C |
From the |
From the |
|
4 |
+5V |
Into the |
Into the |
|
5 |
D- |
N/C |
Into the |
|
6 |
D+ |
N/C |
From the |
|
