Instruction Manual

4
Notes on the operating instructions
- The operating instructions are in-
tended for specialist workers and
trained personnel.
- Before each stage of work, read the
relevant notes and warnings care-
fully, and keep to the sequence as
stated.
- Pay particular attention to the sec-
tion on «General safety warnings».
If you have any problems or questions,
please contact your supplier or
consult KELLER directly.
1. Description of the device
General description
By means of the pressure pumps
supplied with the product, the low-
pressure calibrator enables the ge-
neration of pressures of -0,85 bar
relative (with the vacuum pump) to
+10 bar relative (with the hand pump).
The measurement technology incor-
porated into this device allows ac-
curate measurement and documen-
tation of the characteristic of a test
object that is connected to it. The
measured pressure progression can
be displayed, evaluated and saved
with a computer monitoring program
(CCS30).
The calibrator is operated with
the two function buttons SELECT
and ENTER, located directly
below the display. The calibrator it-
self is powered by a 3,0 V battery, but
power can also be supplied externally
via the K-114-A interface converter.
Test objects (transmitters or pressure
switches) must be supplied from an
external source.
Pressure range for the display
The low pressure calibrator has a
factory-set pressure zero point of
0 bar absolute (vacuum). The Zero
function allows any desired pressure
value to be set as the new zero point
reference.
To take relative measurements,
the low pressure calibrator is
zeroed at ambient pressure (
Set
Zero). To reset the pressure zero
point to absolute pressure, use the
RES Zero function (reset zero).
Commissioning
A pressure-resistant connection for
the test object is required in order to
use the low pressure calibrator. The
pressure connection for the test object
is already screwed to the pressure dis-
tributor of the low pressure calibrator
so that it is pressure resistant when it
leaves the factory, and it must not be
dismantled.
Recommended torque for the test ob-
ject pressure connection: 10 Nm
IMPORTANT!
Nothing must adhere to the surface of
the test object (no oil, grease, water,
etc).
Impurities could pass through the
adapter to reach the low pressure cali
-
brator and damage it.
Proof pressure
If the pressure exceeds the measuring
range by more than 20 %, the measur-
ing cell or the mechanism of the low
pressure calibrator may be destroyed.
Recalibration
The recalibration cycle depends on
the conditions of use. Recommended
recalibration cycle: 1 year.
Scope of delivery
- 1 calibrator
- 1 hand pump
- 1 carrying case
- 1 vacuum pump
- 1 hose nipple
- 1 connection nipple, G 1/4”
- 2 sealing rings
(G 1/8” + G 1/4”)
- 1CrNilter
- 1 spare battery, type CR2430
(3,0 V)
- 1 set of operating instructions
- 1 test record (5 points)
- USB interface converter, K-114-A
Intended use
The low pressure calibrator (LPX) may
only be used to generate positive or
negative pressure with air. Use of the
calibrator with other media, especially
hydraulic oil, will damage it. The op-
erational safety of the device supplied
is guaranteed only if it is used as in-
tended. The limit values as stated
(see page 19: «Technical data») must
never be exceeded.
Before installing the low pressure cali-
brator, check that it is suitable for your
applications.
Scope of delivery
Low pressure calibrator