ENMET PROAIR 2200 User Manual

Page 20

2200

ENMET Corporation

5.3.1

B High Cal/SpanGas Adjust

A High Cal/Span Gas should only be preformed after a successful Low Cal/ZeroCal has been completed.

Press the

SELECT

switch, that moves the cursor one digit to the right when the last digit is accepted the display will move

to "

HiCal xx

" gas calibration.

= the level of gas to be used for calibration. The mV reading is shown in the upper right

hand corner of the display.

Apply calibration gas to sensor. See

Figure 7. After about 1 minute and mV reading has stabilized.

Press the

SELECT

switch, that moves the cursor one digit to the right, when the last digit is accepted and the calibration is

successful the display will momentarily show Cal OK then slope and off set readings, before returning to the Calibration
Menu

Repeat above steps for each channel to be calibrated.
An unsuccessful calibration will result in an error message being displayed,

Example:

Offset Err, Cal Slope Err

If any

Err messages appear the channel needs to be re-calibrated.

To continue on too next section Press the

OPTION

switch.

Press

OPTION

switch until “Exit maint menu” appears and then press

SELECT

switch to return the instrument to the

Operational Display

When calibration is completed exit the calibration menu and maintenance menu. At the Operational Display if no error
messages are present then calibration is complete.

5.3.2 Set 4 –20mA Transmitter Scale

This section of the maintenance menu is installed when there are 4-20mA style sensors for dew point or other gases. This
function is normally performed at the factory and is not usually required to be performed in the field unless a new transmitter
is installed.

After entering a valid password into maintenance menu, the Scale mA Xmtrs section is the second menu section, if it is
installed, enter by pressing the

ELECT

switch

Press the

SELECT

switch "

mA Xmter Scale: Select XX

" is displayed.

= the gas to be set up.

Press the

OPTION

switch, if needed, to change to the gas to be set up.

Press the

SELECT

switch,

“Ch#: mAXmter: 4mA: 0000”

is displayed

Press the

SELECT

switch, that moves the cursor one digit to the right when the last digit is accepted the display move to the

full Scale mA Xmtrs menu

Press the

SELECT

switch,

“Ch#: mAXmter: 20mA: 0000”

is displayed

Press the

SELECT

switch, that moves the cursor one digit to the right when the last digit is accepted the display will return

to the Scale mA Xmtrs menu

Repeat these steps for each 4 –20mA transmitter.

Press

OPTION

switch until “Exit maint menu” appears and then press

SELECT

switch to return the instrument to the

Operational Display

Example: Sensor/Transmitter Set Up Flow Chart

Example: Set up values

-112°F

68°F

O = Press Option

S = Press Select

mA Xmtr Scale

Select (Gas)

MAINTENANCE MENU

Scale mA Xmtrs

Press

PTION

until the gas to be Set Up is displayed

CH#: XX mA Xmter

4mA: 0000

S each digit

CH#: XX mA Xmter

20mA: 0000

S each digit