IS-HF-AccUViewLEDEx-100125 Rev 0
14
Routine Maintenance
Cleaning the Flow Through Cuvette
Measurement cuvettes used for the flow through should be clean and
free of marks or scratches. The interior and exterior of the cuvette can
be cleaned with a detergent solution and then rinsed several times with
distilled or de-ionized water.
To replace the cuvette:
1. Shut off the flow using the provided shutoff clamp.
2. Unscrew the old cuvette and replace with a fresh, clean cuvette.
3. Recalibration is required for accurate operation.
Replacing the Source LED
The life of the UV source lamp in the AccUView LED Ex is dependent
on the setting of the Duty Cycle and operating conditions. See section
on Duty Cycle for more information on the LED life.
When the UV source LED requires replacement, it is required to open
the enclosure. Contact the HF scientific Customer Service department
before servicing or to purchase a service module.
Input Registers
These 16-bit values are readable by the master. The data is stored with
the MSB first and then the LSB.
Valid Commands
Code
Name
Broadcast
0x04
Read Input Registers
No
Format
Float - stored in two consecutive addresses with the first address
containing the least significant word (lower part of mantissa) and the
second address containing the most significant word (sign, exponent
and upper part of mantissa).
Valid Addresses
30001 - 30XXX
Definitions
Address
Type
Register
Value
Function
30001, 30002
Float
Sensor reading
--
The meter reading
30003, 30004
Float
Sensor reading raw
--
Sensor reading to six
significant places
30005
Int
Version major
--
Software version major
number
30006
Int
Version minor
--
Software version minor
number
30007
Int
Version revision
--
Software version revision
number
30008
Int
Model number
--
Product number
30009
Int
Model suffix number
--
0 if no options
30010
Int
Reading status
1
Normal
2
Over range
3
Under range
6
Reading problem
30011
Int
Instrument error
summary (bit-mapped)
0x0000 Normal
0x0001 Error
0x0008 Calibration error
30012
Int
Errors (bit-mapped)
0x0000 Normal
0x0001 Desiccant Warning
0x0002 Break in the 4-20 mA
0x0004 Calibration error
0x0010 Data over-range
0x0020 Flow switch alarm
0x0040 Lamp problem
0x0080 Auto-cleaning problem
0x0100 General error
0x0200 General error
0x0400 General error
30013
Int
PCB revision
0
Revision 1
1
Revision 2
Exception Responses Implemented
Code
Name
Meaning
00
--
No Error
01
Illegal function
The function code is not allowed in the device.
02
Illegal Data Address
The data address is not allowed in the device.
03
Illegal Data Value
A value contained in the query field is wrong for the device.
Ensure the cuvette is tightened to the flow through assembly
before each operation. After replacing a cuvette, it is
recommended that the water be run with the flow through not
installed to allow for inspection of the seal.
NOTICE
Specific condition of use: Parts of the enclosure are non-
conducting and exceed the maximum permissible resistance
according to the IEC 60079-0. Therefore, to avoid electrostatic
charge build-up, it must not be rubbed or cleaned with
solvents or a dry cloth when installed/used within a potentially
explosive atmosphere.
WARNING
!