Sensor card

for the installation in a protective housing
consisting of

RS232 / SDI-12 output

- for connection to external devices
- data readout

 
Ring-memory (EEProm)

for storage up to 11,200 measured values
= 15 months data at 1 hr storage interval
adjustable sampling and storage interval
(5 min. to 24 h)

 
Absolute-pressure measuring cell

Silicon-DMS, piezoresistive Resolution by

displaying in:	m = 1 cm mm = 5 mm ft. = 0.01 ft
Accuracy:	better than 1 cm (0.03 ft)
Measuring range:	33 ft. (10 m) water column
Overload:	60 ft. (20 m) water column

 
Mini-compressor (Pneumatic unit)

maintenance-free piston pump for compressed air, lifetime lubricated, valvecontrolled

Measuring tube

(Special synthetic material):
straight tube, including push-fit connector
(maximum length approx. 150 m)

inside diameter:	2 mm
outside diameter:	4 mm

 
Bubble chamber (surface waters)

EPS50 for mounting in riverbeds, etc. or 2" dia. can be mounted to 2" protecting tubes

or

Bubble chamber (groundwater)

1" dia., special synthetic material

Kevlar core (groundwater)

for depth positioning of the bubble chamber in the groundwater

 
Options
 

MIDI compact housing for wall mounting

in a protective housing (shelter)
Dimensions: 7.5 x 10 x 5.5 in. (LxWxH)
(Depending on the individual requirements other housing types can also be used)

-	Optical Interface (infrared technology)
-	LC display 4-lines
-	Touch-key path (6 keys) for easy handling in the field (control, parameterization)