Scale Units To Ppm Set-Up - Michell Instruments Easidew Online User Manual

Easidew Online User's Manual
3.4.4 Scale Units to ppm
To change the monitor to read parts per million by volume (ppm
Figure 29 shows the operational key sequence.
NOTE: The dew-point transmitter must be confi gured to provide an output
proportional to ppmV which can be set up at the time of order or by using the
Michell application software. Contact Michell Instruments for information
(for contact details see www.michell.com).
1. Press the
2. Press the
3. Press the  key, the display will fl ash the current decimal point position
(0001).
4. Press the  key to set 0000 on the display (no decimal point), and press
the
SET
5. Press the  key, the display will fl ash the current minimum span limit
(-1000)
6. Use the  and  keys to set the required ppmV minimum reading (0000)
and press the
7. Press the  key, the display will fl ash the current maximum span limit
(0200).
8. Use the  and  keys to set the required ppmV maximum reading (3000)
and press the
9. Press the  key, the display will fl ash the current unit (°C).
10. Press the  key three times to set the display reading to '_' (ppmV) and
press the
11. Press the  key, the display will fl ash the current alarm lower range limit
(-1000) (formerly -100.0 with no sign or decimal point showing).
12. Use the  and  keys to set the required alarm lower range limit (point
where display starts to fl ash) (0 or different value), and press the
key.
uPL
13. Press the  key, the display will fl ash the current alarm upper range limit
(0200) (formerly 020.0 with no decimal point showing).
14. Use the  and  keys to set the required alarm upper range limit (point
where display starts to fl ash) (3000 or different value), and press the
key.
PUoF
15. Press the
NOTE: Neither the °C nor the °F LED indicators on the front panel
of the monitor are now lit.
On completion of the above procedure, appropriate alarm levels (relevant to the new
ppm scale) will need to be set-up (refer to Section 3.4.3).
V
Michell Instruments
Set-Up
V
key once, the display will read
P
key four times and the display will read
SET
key twice. is then displayed.
tPoL
key. is then displayed.
SET tPoH
key twice.
SET unit
key. is then displayed.
SET LoL
is then displayed.
is now displayed.
key twice and the main display, now reading ppmV will show.
P
.
tECH
dPnt
is then displayed.
OPERATION
) proceed as follows:
V
.
SET
SET
35