B.I.O-TECH ARS 260 User guide

The world of flow

Instruction Manual

ARS - Totaliser Model
260 / 260-EC-01

Type 260-A

Table of Contents

1. Safety Instructions

2. Product ID - Dimensions

3. Function Description

4. Installation – Battery Replacement

5. Programming

6. Technical Data

7. Spare Parts

Type 260-EC-01

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1. Safety Instructions

This instrument has been manufactured in accordance
with the applicable state of the art and meets all safety
regulations as shipped from the factory. Installation and
startup must be performed by qualified electricians only!
Operate instrument only when properly installed!
If safe operation can no longer be ensured, disable the
instrument and secure it against unauthorized operation.
Prevent injury to people or damage to property due to
failure or malfunction of the equipment through additional
safety measures such as limit switches, protective
equipment, etc. .
Read the Instruction Manual carefully before startup!

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2. Product Identification – Dimensions

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3. Function Description

This instrument can be used as a rate meter and as a
pulse counter.
The instrument has been pre-programmed in the factory
and must be adapted to your process for both the rate
meter function and pulse counting (see Section 5 –
Programming).
The instrument is ready for operation when the
programming input is not wired. You can switch
between Rate meter and Pulse Counter displays
using the S/E key during operation at any time.
The instrument has two counter inputs. Use counter
input A (“High” active) for rate meter with pulse
sequences up to 10 kHz; use input B (“Low” active
or “High” active) for pulse counter with pulse sequences
up to 30 Hz or 10 kHz.
The backlighting is activated and load on the internal
battery is reduced by applying an external supply
voltage of 24 VDC.

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All stored data is lost when the battery is replaced.
The message “260_ xx” (xx for software
version number)
appears after the new battery is installed.
The instrument
is ready to operate after the S/E key is depressed,
which activates the factory programming.

Rate meter

The rate meter operates by the principle of period
length measurement with ARS (Auto Range System).
You can adapt the display to your operation using
the programming sequence:

1. Input the physical unit of the rate meter
(time basis)

2. Select accuracy

3. Set sensor pulse constant, and

4. If necessary, program a suitable scaling
factor.

ARS helps minimize display process-related fluctuations
depending on the selected accuracy, rounds off the
displayed value, and sets the decimal point automatically.

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Measurement starts with the active edge at the counter
input A. After the measurement time (1 sec) has elapsed,
the measurement is completed with the next active edge,
and the value is displayed in CHANNEL A.

If no active edge appears within the “time out” period

you have programmed, the rate meter is reset to zero.

At frequencies > 1 Hz the average is calculated. When
the allowable count frequency is exceeded, the value
zero appears in the display; if the possible display range
(99999999) is exceeded, the display “E” appears.

Display as delivered:

Pulse Counter

The pulses entering at the input B are added
and displayed
in CHANNEL B. The input B is programmable
as “HIGH
SPEED” - or “SLOW SPEED” - input. Further
you can scale
the display using an appropriate scaling factor.

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You can also set a fixed decimal point and
program the pulse counter so
that you can reset it either through the regular
electrical
reset on the back or through the red R key on
the front.

After pressing the S/E key:

4. Installation – Battery replacement

After unpacking the instrument, remove the light-colored
frame from the back of the housing by simultaneously
bending both long sides of the frame slightly apart to
disengage them from the locking holes.
Then slide the housing through the cutout prepared in
the
front panel, attach the frame onto the back of the housing,
slide it all the way against the back of the front panel, and
carefully attach it with the two side screws to the front
panel.
In this way, you can compensate for different front panel
thicknesses. Class IP 65 front protection is achieved
through the seal integrated in the housing.
See the wiring diagram below for the electric wiring.

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