Keller DCX-22 Data sheet

Data ColleCtor for Water levels

Mark of the diaphragm position

Battery

Air Pressure

Interface

Electronics

Thread for

Cap Loc

100% Waterproof, air pressure CompensateD

The data collector DCX-22 AA measures and records ground water levels using KELLER’s two

sensor AA-technology (absolute-absolute). The submersible depth sensor measures the water

level. Barometric pressure variations are measured and compensated with the built-in waterproof

air pressure sensor which is mounted in the electronics housing at the top of the borehole. There

are no ventilation tubes; this means the DCX-22AA data logger is very rugged and suitable for

reliable applications in humid and wet environments. Even short periods of immersion and ooding

will not cause a problem.

The electronics housing is mounted at the top of the borehole to give easy access for data

downloading. The level sensor (diameter 22 mm) is connected via a sealed cable to the bottom

of the electronics housing. Installation is quick and simple, using xing devices in various sizes,

suitable for cap lock units of different manufacturers and for well access points starting from 1”

(caps starting at 2” include a hole to lower a dip meter). Thus enabling measuring stations to be

set up at considerably lower costs compared to conventional systems.

The electronics employ the latest microprocessor technology, which give high accuracy and re-

solution for the pressure and temperature signals from both the depth sensor and the barometric

sensor. The measured values are mathematically compensated for all linearity and temperature

errors of the pressure sensors.

The use of a non-volatile memory ensures high data security.

DCX-22 aa

Level
Sensor

Electronics
Housing

The modular design of the DCX-22 AA offers the user the two options for collecting the data.

Standard design requires the user to visit the location, connect via data-cable and download

data. The optional ARC-1 unit allows the transmission of data, and instructions (re-program-

ming) to the data-collector from / to a remote location. The data can be sent to any mobile phone

as a short message (SMS).

OPTIONS

ARC-1 Data transmission module (see separate datasheet ARC-1)

Plug

M20x

k

3,1

12 mm

Fixing Device

Housing

216 mm

Sensor

Housing

ø 22

System Length
Standard: 5 m / 10 m

(others on request)

Integrated air pressure sensor

with diaphragm protection

on the level sensor

ø 22

88

15,6

KELLER AG für Druckmesstechnik
CH-8404 Winterthur

[phone]
[e-mail]

KELLER Ges. für Druckmesstechnik mbH

D-79798 Jestetten

[phone]
[e-mail]

KELLER America

Newport News, Virginia

1 877 253 5537
[e-mail]

Edition 04/2018

Subject to alterations
Companies approved to ISO 9001

www.keller-druck.com

SpecificationS

Measuring-/ Pressure Ranges

800…1800 mbar abs. for ranges up to 5 mWC (System Length: 5 m)

800…2300 mbar abs. for ranges up to 10 mWC (System Length: 10 m)

Supply Lithium-Battery 3,6 V (Type AA)
Battery Life * 10 years @ 1 measurement/hour
Output RS 485 digital
Electrical Connection Fischer DEE 103A054

Pressure Sensor Specications (for level sensor respectively air pressure sensor)
Linearity typ. 0,02 %FS
Comp. Temperature Range -10…40 °C

Error Band ** typ. 0,05 %FS *** max. 0,1 %FS
Resolution max. 0,0025 %FS

Temperature Measurement Accuracy typ. ±0,5 °C

Shortest Measuring Range 1x per second
Memory 57’000 measuring values @ storage

interval ≤ 15 s, otherwise 28’000 measuring
values (always with attributed time)
Material Stainless steel 316L (DIN 1.4435)
O-Ring: Viton

®

Weight: Housing / Probe ≈ 335 g / ≈ 200 g (without cable)
Tolerance System Length ± 2 cm

Long Term Stability typ. 0,5 mbar

* exterior inuences could reduce battery life ** Linearity + Temperature Error *** optional max. 0,05 %FS

LOGGER 5

The Logger 5 software makes it possible to congure and read autonomous KELLER data loggers. This software assists users during measure­ments in the eld, with processing the data and also with forwarding it to partners or end customers.

Measurement data can be displayed in graphic form, exported, compensated for air pressure or converted into different units. The online function

displays the current device values.

The software is included in the scope of delivery for the interface converter cables, or it can be downloaded free of charge at www.keller-druck.com.

• Supports Windows operating systems

Overview of functions: Logger 5

- Pressure and temperature channels, selectable

- Adjustable measurement interval (1s…99 days)

- Averaging with selectable number of measurements

- Recording modes:

• continuous interval measurement

• event-controlled recording:

· recording starts when value is exceeded

· recording starts when value is undercut

· recording starts when value changes
→ combination of continuous and event-controlled
recording is possible

- Adjustment of pressure zero point

- Start measurements immediately or at a set time

- Data storage: linear or ring-type memory

- Battery status display

- Online display of measuring channels

- Management of notications and images for stations

Processing and forwarding measurement data

- Graphic display of measurement data

- Simple export of measurement data and graphics
(supports Microsoft Ofce and these le formats:

CSV-1, CSV-2, XML, Hydras, TNO, Wiski, BNA)

- Generation of measurement reports

- Station information stored in SQ Lite database

KELLER AG für Druckmesstechnik
CH-8404 Winterthur

[phone]
[e-mail]

KELLER Ges. für Druckmesstechnik mbH

D-79798 Jestetten

[phone]
[e-mail]

KELLER America

Newport News, Virginia

1 877 253 5537
[e-mail]

Edition 04/2018

Subject to alterations
Companies approved to ISO 9001

www.keller-druck.com