Hanna Instruments HI 93530 - Manual (Page 9)

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The average value is lost and will not restore even if the condition
restores. To start the average cycle again, either press CLR or re-
enter the average mode.
• While in T1-T2 (HI 93532R only), pressing DISP will switch
between 4 displays:
Note: Pressing T1/T2 (HI 93532R only) to change the channel will not
alter the information chosen to be displayed for each channel
(DISP). For example, if T1 is in average mode, the average will
continue to be calculated even if the user press T1/T2 to see T2.
Note: Relative/average modes cannot be entered if dashes are shown
on the primary LCD.
Note: The auto-off time is disabled whenever a channel is set to
average mode.
When the battery level is below 5%, the battery symbol will blink on
the LCD to indicate a low battery condition.
If the battery level is low enough to cause erroneous readings, the
Battery Error Prevention System (BEPS) turns the meter off.
Immediately replace the batteries with new ones.
The batteries are accessed by separating the front and the back
halves of the meter: unscrew the 4 screws on the back of the meter
and carefully replace the three batteries located in the battery
compartment, while paying attention to their polarity. Reattach the
back making sure that the gasket is in place and tighten the screws
to ensure a watertight seal.
Battery replacement must only take place in a non-hazardous area
using 1.5V AA (IEC LR6) alkaline batteries.
BATTERY REPLACEMENT
SERIAL PORT COMMUNICATION
(HI 93531R & HI 93532R only)
HI 93531R and HI 93532R feature an RS232 output for transfer-
ring measurement data (once every second for HI 93531R and once
every 2 seconds for HI 93532R) to devices provided with RS232 input
(PC or printer).
The communication protocol has been designed to transmit to the
receiving unit all the displayed information.
The communication is unidirectional (meter to receiving unit only) and
the transmissions consist in a 32-character ASCII string, compatible
with our optional HI 92000 software.
The 32-character data string is structured as follows:
Main portion of the LCD
• byte 0
probe type: K-thermocouple (k)
• bytes 1, 2 measurement channel: T1, T2, T1-T2 (Td)
• byte 3 measurement mode: Normal (blank), Relative (R),
Average (A), Average done (a)
• byte 4 operating mode: Hold (H), Memory recall (M)
• byte 5 blank character
• bytes 6-10 measurement: reading (XXX.X or blank XXXX),
over-range (OVRG blank), no data (blank ----)
• byte 11 temperature unit: C, F
• byte 12 blank character
Secondary LCD, left portion
• bytes 13, 14
info description: low temperature (Lo), T1 (T1)
• byte 15 blank character
• bytes 16-20 measurement: reading (XXX.X or blank XXXX),
over-range (5 blanks), no data (blank ----)
• byte 21 blank character
Secondary LCD, right portion
• bytes 22, 23
info description: high temperature (Hi), T2 (T2)
• byte 24 blank character
• bytes 25-29 measurement: reading (XXX.X or blank XXXX),
over-range (5 blanks), no data (blank ----)
• byte 30 <CR>
• byte 31 line feed