1735 Operators Manual - Novatech Controls

4.3 Keypad
There are 8 keys built into the decal on the outside of the door of the 1735 transmitter. The key function is
printed in WHITE and BLACK to identify the function of the key in either RUN mode or SETUP mode.
Key text RUN mode (WHITE text) SETUP mode (BLUE/BLACK text)
SETUP / RUN Enter SETUP mode Return to RUN mode
DISPLAY / FUNCTION ∆ Display scroll up Function scroll up
DISPLAY / FUNCTION ∇ Display scroll down Function scroll down
ALARM / OPTION ∆ Alarm scroll up Option scroll up
ALARM / OPTION ∇ Alarm scroll down Option scroll down
ALARM ACCEPT / ENTER Alarm accept Enter
GAS 1 PURGE 1 / SENS IMP Gas 1 / Purge 1 manual activate Probe impedance
GAS 2 PURGE 2 / AUTO CAL Gas 2 / Purge 2 manual activate Auto calibrate
4.3.1 Keypad in RUN Mode
When the transmitter is turned on, and has gone through the start-up procedure, it will go to the RUN mode.
In this mode the top line of the display will show the selected units of humidity from probe 1. The other key
functions are –
SETUP / RUN Key
Pressing this key once will put the transmitter into the SETUP mode. The function of all the keys will then
change to the functions that they have in the SETUP mode. Pressing the SETUP / RUN key again will return
the transmitter to the RUN mode, or it will return automatically one minute after the last key press.
DISPLAY Up / Down Keys
The display keys are used to scroll the lower line up and down through the variety of measurements that are
selected on the lower line display. The list can be changed to suit the operator by using SETUP function #3.
ALARM Up Key
If there is either a new alarm or an active alarm the ALARM UP key can be pressed to examine the alarm
status. The alarm light will be flashing if there is a new alarm or steady if there is an existing alarm. (see
chapter 6, Alarms).
ALARM Down Key
When the transmitter is in the run mode or the alarm mode (the ALARM UP key has been pressed), the
ALARM DOWN key and the ALARM UP key allow the operator to examine the alarm log. The date / time of
last 4000 alarms can be scrolled through. Each alarm record consists of the alarm name and the date / time
that the alarm was initiated, accepted and cleared (see chapter 6, Alarms).
ALARM Accept Key
The ALARM ACCEPT key is used to accept a new alarm (see chapter 6, Alarms).
GAS 1 / PURGE 1 and GAS 2 / PURGE 2 Keys
These two keys are used to turn on the gas / purge solenoids. When the transmitter is in the manual cal /
purge mode (Commissioning function #22/31) the solenoid will be activated for as long as the key is pressed.
When the transmitter is in the auto cal / purge mode the automatic cal / purge cycle is started. The cycle can
be stopped by pressing the same key again. (See chapter 7, Gas Calibrate and Purge)
January 2012
1735 Water Vapour Transmitter 15