WEL FROSTWATCH User manual

FROSTWATCH
Temperature
Monitor unit
v3.20
USER MANUAL (All Models)

User manual
FROSTWATCH (All Models) – V3.20 Rev. September 2018 - ii -
Contents
Section 1 Introduction to FrostWatch ............................................... 1
1.1 Choosing the right FrostWatch ....................................................... 1
1.2 Features ......................................................................................... 2
1.3 Accessory order codes .................................................................. 3
Section 2 Installation ........................................................................... 4
Section 3 FrostWatch basics ............................................................. 5
3.1 Operating ........................................................................................ 5
3.2 Power-up screen ............................................................................ 6
Section 4 Viewing settings and log ................................................... 7
Section 5 Main menu ........................................................................... 8
5.1 Frost alarm .................................................................................... 9
5.2 Sunburn alarm ............................................................................. 10
5.5 System log .................................................................................... 11
5.6 Device setup ................................................................................. 11
5.6.1 Set time/date ...................................................................... 11
5.6.2 Location name .................................................................... 12
5.6.3 Setup backlight ................................................................... 12
5.6.4 Setup buzzer ....................................................................... 12
5.7 Hardware setup ............................................................................ 13
5.7.1 Setup I/O ............................................................................ 13
5.7.2 Setup pump mode ............................................................... 14
5.7.3 View I/O status .................................................................... 14
5.7.4 Set fault output .................................................................... 14
5.8 Phone alarm .................................................................................. 15
5.8.1 Setup contacts .................................................................... 15
5.8.2 Ph call attempts ................................................................. 16
5.8.3 Repeat TXT messages ...................................................... 16
5.8.4 Signal strength .................................................................... 17
5.8.5 System ph number ............................................................... 17
5.8.6 TXT command password ..................................................... 17
Section 6 Calibration menu .............................................................. 18
6.1 Temperature inputs ........................................................................ 18
6.2 Calibrate low point ........................................................................ 18
6.3 Calibrate high point ........................................................................ 19
6.4 Restore defaults ............................................................................ 19
Section 7 Remote phone control ..................................................... 20
7.1 Call query ....................................................................................... 20
7.2 TXT commands ............................................................................ 20
Section 8 Error messages ................................................................. 21
Section 9 Topping up your prepay account ...................................... 22
Section 10 Explanation of calculations used ...................................... 23
10.3 Temperature rate of change .......................................................... 23
Section 11 Specifications & wiring ..................................................... 24
11.1 Wiring colour codes ...................................................................... 25
11.1.1 Temperature sensors ..................................................... 25
Section 12 Warranty & Terms and conditions of sale ........................ 26
FrostWatch Setup details
Warranty Card

User manual
FROSTWATCH (All Models) – V3.20 Rev. September 2018 - 1 -
1.0 Introduction to FrostWatch
FrostWatch environmental monitor unit has been designed with microcomputer
technology to allow the user the benefits of accuracy and reliability at an
affordable price.
When used in accordance with the manufacturer’s instructions, FrostWatch will
give years of trouble free service.
1.1 Choosing the right FrostWatch
FrostWatch is available in a number of different models, depending on your
requirements. A full feature list is given in section 1.2. This manual applies to
all models, so it is important to know which model you have, as this determines
which features your new FrostWatch has built in.
It is possible to upgrade your FrostWatch to a higher featured version by
returning it to the manufacturer. Please contact the manufacturer for details of
this upgrade service.
Power Supply:
FrostWatch is available as either a 12V DC unit, for operating off 12V batteries
(including 12V solar installations), or a Mains plug-pack model that will also
accept from 12 to 15 Vdc.
Cellular Models:
FrostWatch is also available with built in cellular communications. This allows
multiple users to be alerted on any phone or TXT under alarm conditions. TXT
queries to the unit determine current and historical temperature information, and
also the current settings of the device. With a password, it is also possible to
control the relay outputs via TXT message. The cellular model is provided as a
prepay unit, but can also be connected to monthly cellular plans.

User manual
FROSTWATCH (All Models) – V3.20 Rev. September 2018 - 2 -
1.2 Features
Features - All Models:
 2 Temperature Sensor inputs (supplied with one 15m sensor cable).
 FROST and SUNBURN control loops.
 User programmable alarm ON and OFF temperatures, with programmable on delay.
 2 configurable output relays.
 Pump prime and start feature, with monitoring via 1 digital input.
 Selectable fault output relay.
 MIN and MAX temperature logging.
 Temperature rate of change.
 Unit is dual point calibrated. A low and high point is provided to ensure accuracy throughout
the entire temperature range.
 User programmable site name field to assist with site recognition (via TXT in cellular models).
 User set-up controls are mounted internally to minimise inadvertent adjustment of settings.
 Info Key to allow settings and logged values to be displayed without opening the case.
 Backlit Liquid Crystal Display allows viewing in the dark.
 Recognition of various cable/sensor faults and display of appropriate message on the display.
 Audible Alarm.
 Low Power Consumption.
 Waterproof Case (IP 65).
 Friendly software ensures ease of operation.
Additional Features - Cellular Models:
 3 additional digital inputs that can generate TXT messages.
 2 Additional User-configurable output relays.
 Output relays controllable via TXT message (password protected).
 Up to five individually configurable phone contacts, with selectable TXT and/or CALL modes.
 Programmable call retries and repeat TXT during alarm conditions.
 TXT query. Send a request to the unit via TXT from any cell phone and receive via return TXT
detailed information of temperature, or current device status.

User manual
FROSTWATCH (All Models) – V3.20 Rev. September 2018 - 3 -
1.3 Accessory order codes
Please use the following codes for ordering accessories for your FrostWatch. Each
Model of FrostWatch is supplied with a single15m temperature sensor cable by
default. See below for ordering custom length sensor cables.
Order Code Description
10WSOL 10W Solar Panel (Suits 12VDC models only)
SOLKIT Solar Power Kit (Suits 12VDC models only). Includes 10W solar
panel, sealed lead-acid battery, mounting bracket to suit ‘10WSOL’
solar panel, and waterproof enclosure to fit battery and any 12VDC
model of FrostWatch.
TSENSE Additional Temperature Probe – Please Specify Length
TCABLE Custom Length Temperature Sensor. Use this code if you require a
temperature probe longer than 15m. Specify the total length of probe
required (in metres) and this will be supplied instead of the default
15m cable. If a second custom length probe is required, please
specify a second ‘TCABLE’ length separately.
UPGRD1 Upgrade any Non-Cellular FrostWatch into a Cellular model (for any
FrostWatch V3.00 onwards).
For further product information, please visit:
www.welnz.com

User manual
FROSTWATCH (All Models) – V3.20 Rev. September 2018 - 4 -
2.0 Installation
All Models:
1. Mount unit in an appropriate indoor location (eg in the shed). Mounting holes are
provided in the case where the lid screws secure the lid.
2. Remove the Main PCB to expose the output board beneath with connectors to
relay outputs and sensor inputs.
3. To operate a pump, use the normally open contacts of output 1 (O1).
4. To make use of the pump prime feature, use the normally open contacts of
output 2 (O2).
5. Connect Temperature sensor to terminal A1 and GND. Ensure that wiring polarity
is correct, as shown in section 11. If an additional temperature sensor is used,
connect to sensor terminal A2 and GND.
6. Connect the input power leads (battery or plug pack) provided to the Power In
terminals. Note that both AC and DC supplies can be connected either way
around.
All Models:
7. Ensure wiring is complete and correct before applying power.
8. Switch on Power and check that unit operates correctly.
Cellular Models only:
9. Check the internal phones signal strength to guarantee communications
See section 5.8.4.
10. Fill out the Phone details page so that the information in the FrostWatch matches
the sheet. Keep in a safe place.
All Models:
11. Proceed to the Calibration Menu ONLY if you have altered the temperature
sensor cable length.
12. Remove and complete the Warranty Card located at the back of this manual
and send back to us.
Warning: Do not use an insulation tester on ANY wiring connected to this equipment.
Such usage will cause damage to the sensor, main unit or both!

User manual
FROSTWATCH (All Models) – V3.20 Rev. September 2018 - 5 -
3.0 FrostWatch basics
3.1 Operating
After installation, and initial set up, the unit requires no further action from
the user.
In the event of any alarm occurring (frost, sunburn) the unit will operate an
internal buzzer (if enabled) as well as the output relay selected for that type of
alarm condition. If the prime feature is enabled the prime output (O2) will
operate for the programmed time before output 1 (O1).
Cellular Models operation under alarm conditions:
Cellular models will dial contacts according to the parameters set by the user.
In phone mode the unit will send an alarm tone to the receiving phone. If the
ph call attempts option is set to more than 1, that contact will be redialled if
the receiving party does not answer and terminate the call within the set
period. In TXT mode the unit will send the current temperature to the
receiving phone.
Repeat TXT messages allow the selected TXT capable contact(s) to be kept
up to date with current active alarm values. The time interval between these
TXT messages is user programmable.
Alarm Operation (All Models):
In Frost control mode, the alarm will operate when the temperature has
been equal to or below the alarm on point for the required on delay time.
The alarm will reset when the temperature rises above the alarm off point.
If the prewarn feature is enabled for a given contact (Cellular Models only)
the unit will send a TXT to that contact when the temperature drops below
the programmed temperature.
In Sunburn control mode, the alarm will operate when the temperature has
been equal to or above the alarm on point for the required on delay time.
The alarm will reset when the temperature falls below the alarm off point. If
the prewarn feature is enabled for a given contact (Cellular Models only)
the unit will send a TXT to that contact when the temperature rises above
the programmed temperature.
General Operation:
If a hardware/system error is detected (section 8), the audible alarm will
operate and the relevant error message will display on the screen. For
cellular models, any contact that has selected to receive system messages
will be notified by TXT message.
To silence the audible alarm, press the INFO key.
With no audible alarms activated, press the INFO key to view the unit
settings and log (section 4). The display messages will rotate at 3 second
intervals, although additional pressing of the INFO key will step through
each screen instantly.

User manual
FROSTWATCH (All Models) – V3.20 Rev. September 2018 - 6 -
A1 20.2 ºc A2 20.2 ºc Y
12:00
am
Frost
Line 1:
Line 2:
3.2 Power-up screen
Main screen
User programmable string:
- See section 5.6.2 under device setup.
Low Battery symbol:
- Symbol flashes when the battery is low and needs replacing. This
occurs only when running in battery backup mode. (ie: No power is
being supplied to the FrostWatch Unit).
Phone Signal Good Symbol:
- To Check Signal strength with greater resolution, see section 5.8.4
under device settings.
System Messages:
- Messages here inform the user of Temperature rate of
change, alarm status, system status and errors.
W E L F r o s t w a t c h
V3.10 S / N : 03000
Line 1:
Line 2:
User Programmable String
Unit Serial number
Software Revision
Current temperature at A1 sensor
Current temperature at A2 sensor
Low Battery Symbol
Phone Signal Good Symbol
System Messages
System Time

User manual
FROSTWATCH (All Models) – V3.20 Rev. September 2018 - 7 -
A1 20.2 ºc A2 20.2 ºc Y
12:00 Frost
4.0 Viewing settings and log
With the lid screwed on and no audible alarm active, Press the INFO key to display
system information. The following screens will rotate at 3 second intervals. To step
through the screens manually, press the INFO key to move to next screen.
Screen 1:
The backlight will switch on enabling viewing of the existing screen in the dark.
Screens 2-5:
Shows the Highest and Lowest recorded temperatures today, and
since the last time the log was cleared.
Screens 15-16:
Shows the Frost Alarm and Sunburn Alarm on point temperatures,
and which relays (if any) will operate under alarm conditions.
Screen 23:
Gives the user an opportunity to clear the min/ max logs.
Screen 24:
If INFO was pressed during screen 23 the following screen will
appear to confirm that the log has been cleared.
Screen 25:
Shows the power up screen details, as specified in section 3.2.
W E L F r o s t w a t c h
V3.10 S / N : 03000
MIN temp - TODAY
3.2 ºc 2:33pm
LOG
CLEARED!
FROST ALARM
1.0 ºc output1
Press INFO to
clear min / max

User manual
FROSTWATCH (All Models) – V3.20 Rev. September 2018 - 8 -
5.0 Main menu
At the main screen press any key to enter the main menu.
Using the DOWN or UP key rotate through the main menu until the desired
option is displayed on line 2, then press the ENTER key.
MAIN MENU
Frost alarm
Line 1:
Line 2:
MENU LISTING:
1. Frost alarm
2. Sunburn alarm
5. System log
6. Device setup
7. Hardware setup
8. Phone alarm – Cellular models
9. exit menu

User manual
FROSTWATCH (All Models) – V3.20 Rev. September 2018 - 9 -
5.1 Frost alarm
Step 1.
With the frost alarm menu option chosen from the main menu, the screen will
now display the message below.
Using the DOWN or UP key, select enable or disable.
Press the ENTER key to store.
If disable was selected, the frost alarm will not operate and the following steps
will not apply.
Step 2.
Using the DOWN or UP key, increase or decrease the on temperature.
The output relay and audible alarm will turn on when the temperature is
equal to or less than this set temperature for the required set time (step 4).
Press the ENTER key to store the setting.
Step 3.
Using the DOWN or UP key, increase or decrease the off temperature.
The output relay and audible alarm will turn off when the temperature is
equal to or greater than this set temperature.
Press the ENTER key to store the setting.
Step 4.
Using the DOWN or UP key, increase or decrease the on delay time.
This is the amount of time in minutes the temperature must be
continuously at or below the alarm on point before the alarm will operate.
Press the ENTER key to store the setting.
Step 5 (Cellular Models Only).
Using the DOWN or UP key, increase or decrease the prewarn temperature.
When the temperature drops below this point a TXT message will be sent to all
contacts who have Frost Prewarn enabled, warning them of an approaching
frost condition. To disable this feature take the temperature down until disable
is displayed. Press the ENTER key to store the setting.
Step 6.
Using the DOWN or UP key, select the output to operate under frost alarm
conditions. To disable this feature, select none.
If Pumpmode is selected, output 1 and 2 operate as specified in section 5.7.2.
Press the ENTER key to store the setting and return to the main menu (section 5).
FROST ALARM
Alarm: enable
FROST ALARM
On Pnt: 1 . 0
º
c
FROST ALARM
O f f Pnt: 2 . 5
º
c
FROST ALARM
O n D l y: 0 2 min
FROST ALARM
Prewarn: 3. 0
º
c
FROST ALARM
Output: output1

User manual
FROSTWATCH (All Models) – V3.20 Rev. September 2018 - 10 -
5.2 Sunburn alarm
Step 1.
With the sunburn alarm menu option chosen from the main menu, the screen
will now display the message below.
Using the DOWN or UP key, select enable or disable.
Press the ENTER key to store.
If disable was selected, the frost alarm will not operate and the following steps
will not apply.
Step 2.
Using the DOWN or UP key, increase or decrease the on temperature.
The output relay and audible alarm will turn on when the temperature is
equal to or greater than this set temperature for the required set time (step 4).
Press the ENTER key to store the setting.
Step 3.
Using the DOWN or UP key, increase or decrease the off temperature.
The output relay and audible alarm will turn off when the temperature is
equal to or less than this set temperature.
Press the ENTER key to store the setting.
Step 4.
Using the DOWN or UP key, increase or decrease the on delay time.
This is the amount of time in minutes the temperature must be
continuously at or above the alarm on point before the alarm will operate.
Press the ENTER key to store the setting.
Step 5 (Cellular Models Only).
Using the DOWN or UP key, increase or decrease the prewarn temperature.
When the temperature rises above this point a TXT message will be sent to all
contacts who have Sunburn Prewarn enabled, warning them of an
approaching sunburn condition. To disable this feature take the temperature
down until disable is displayed. Press the ENTER key to store the setting.
Step 6.
Using the DOWN or UP key, select the output to operate under sunburn
alarm conditions. To disable this feature, select none.
If Pumpmode is selected, output 1 and 2 operate as specified in section 5.7.2.
Press the ENTER key to store the setting and return to the main menu (section 5).
SUNBURN ALARM
Alarm: enable
SUNBURN ALARM
On Pnt: 37 . 5
º
c
SUNBURN ALARM
O f f Pnt:
35 . 0
º
c
SUNBURN ALARM
O n D l y: 0 2 min
SUNBURN ALARM
Prewarn: 34. 0
º
c
SUNBURN ALARM
Output: pumpmode

User manual
FROSTWATCH (All Models) – V3.20 Rev. September 2018 - 11 -
5.5 System log
The system log allows the latest 256 events to be viewed.
Using the DOWN or UP key rotate through the events.
Press the ENTER key to exit.
5.6 Device setup
With the device setup menu option chosen from the main menu, the screen will
now display the message below.
Using the DOWN or UP key rotate through the settings menu until the
desired option is displayed on line 2, then press the ENTER key.
5.6.1 Set time/date
Use this menu to set the system time and date, this needs to be set to
allow accurate time and date stamping for all logged events.
Step 1.
Using the DOWN or UP key, modify the value pointed to by the flashing
cursor. ENTER will move the cursor onto the next value.
Step 2.
Using the DOWN or UP key, modify the value pointed to by the flashing
cursor. ENTER will move the cursor onto the next value.
To exit this menu press ENTER through each of the values.
MENU LISTING:
1. Set time/date
2. Location name
3. Setup backlight
4. Setup buzzer
7. exit menu
DEVICE
Set time/date
Line 1:
Line 2:
SET TIME
1:50 pm
001 12:00 dd / mm
system power up
Event number (001 = latest event)
Event time
Event date
Event message
SET DATE
Thu 02 Aug 07

User manual
FROSTWATCH (All Models) – V3.20 Rev. September 2018 - 12 -
5.6.2 Location name
This menu option allows the user to set a unique name that could be
used to identify location. This string is displayed on initial power up of
the unit and is included in certain TXT messages sent by the unit.
Using the DOWN or UP key, modify the character slot pointed to by the
flashing cursor. ENTER will move the cursor to the next character slot.
To exit this menu press ENTER through each of the character slots.
5.6.3 Setup backlight
Using the DOWN or UP key, select either disable, timed or
enable.
Press the ENTER key to return to the device menu.
5.6.4 Setup buzzer
Using the DOWN or UP key, select either disable, timed or
enable.
Press the ENTER key to store the setting and return to the device
menu.
LOCATION NAME
WEL Frostwatch
¯
SETUP BACKLIGHT
Mode: timed
SETUP BUZZER
Mode: enable

User manual
FROSTWATCH (All Models) – V3.20 Rev. September 2018 - 13 -
5.7 Hardware setup
With the Hardware setup option chosen from the main menu the screen will
now display the message below.
Using the DOWN or UP key rotate through the menu until the desired
option is displayed on line 2, then press the ENTER key.
5.7.1 Setup I/O
Use this menu option to enable / disable inputs and map user definable
names to inputs and outputs.
These names are used as references during remote communications
e.g.TXT
Step 1.
Using the DOWN or UP key, select the desired input / output to setup.
Press the ENTER key to proceed.
Step 2.
Using the DOWN or UP key, enable or disable the input/ output.
Press the ENTER key to proceed.
This step does not appear when setting up A1, as it cannot be disabled.
Step 3.
Using the DOWN or UP key, modify the character slot pointed to by the
flashing cursor. ENTER will move the cursor to the next character slot.
To exit press ENTER through each of the character slots.
HARDWARE
Setup I/O
Line 1:
Line 2:
MENU LISTING:
1. Setup I/O
2. Setup pumpmode
3. View I/O status
4. exit menu
SELECT I/O
Select: A1 (temp)
SETUP A2
Mode: enable
SET NAME FOR A2
10digit name here

User manual
FROSTWATCH (All Models) – V3.20 Rev. September 2018 - 14 -
5.7.2 Setup pump mode
Use this menu option to setup automatic pump control. This specifies the
settings used if pump mode is selected as an output for any alarm. If such
an alarm is activated and the prime feature is enabled the prime output
(O2) will operate for the programmed prime time before output 1 (O1).
If line pressure input D1 is enabled, Line Fill Delay and Low Pressure
Cutout options are available.
Step 1.
Using the DOWN or UP key, increase or decrease the prime time for
output relay 2 (O2). Select disable if no priming is required.
Press the ENTER key to proceed.
Step 2 (if input D1 is enabled)
Using the DOWN or UP key, increase or decrease the line fill delay time
for D1.
This is the time the system ignores low pressure on D1 from when the
pump mode relay (O1) is activated
Press the ENTER key to proceed.
Step 3 (if input D1 is enabled).
Using the DOWN or UP key, select either enable or disable.
If Low Pressure Cutout is enabled, then if low pressure is detected on
input D1 after the Line Fill Delay time is up, then the pump relay (O1) will
turn off.
Press the ENTER key to return to the hardware menu.
5.7.3 View I/O status
Use this menu option to view the current state of all inputs and outputs,
and to test correct operation of output relays.
Using the DOWN or UP key, select the desired input/ output to view.
While viewing a relay output that is off, pressing the INFO key will turn that
output on, while the key is held down.
Press the ENTER key to return to the hardware menu.
5.7.4 Set fault output
Use this menu option to select the output that turns on during a fault condition.
PRIME on OUTPUT 2
Time: 02 min
LINE FILL DLY – D1
Time: 10 min
OUTPUT2 Status
PRIME: off
LowPress. Cutout
mode: enable
Set fault output
Output: output4

User manual
FROSTWATCH (All Models) – V3.20 Rev. September 2018 - 15 -
5.8 Phone alarm
With the phone alarm menu option chosen from the main menu, the screen will
now display the message below.
Using the DOWN or UP key, rotate through the phone alarm menu until
the desired option is displayed on line 2, then press the ENTER key.
5.8.1 Setup contacts
Step 1.
With the setup contacts menu option chosen from the phone alarm
menu, the screen will now display the message below.
Using the DOWN or UP key, select the required contact number.
Press the ENTER key to advance to step 2.
Step 2.
Using the DOWN or UP key, modify the number slot pointed to by the
flashing cursor. ENTER will move the cursor to the next number slot.
It is up to the user to check the number is appropriate for the mode chosen.
To exit press ENTER through each of the character slots.
Step 3.
Using the DOWN or UP key, select the required contact mode disable /
Phone / TXT / Ph&TXT for the selected contact during Frost Alarm
events.
Press the ENTER key to store the setting and advance to step 3.
If mode is set to disable that contact will not be dialled and will not receive
TXT messages during Frost alarm events.
Step 4.
If TXT or Ph&TXT was selected in step 3, the user can select to receive
repeat TXT messages during Frost alarm events, as described in section
5.8.3.
Using the DOWN or UP key, select either enable or disable.
Press the ENTER key to store the setting and advance to step 5.
If repeat is set to disable that contact will only receive a single TXT
message during Frost alarm events.
SELECT CONTACT
Select: C1
C1 FROST USE
Alarm: Ph&TXT
MENU LISTING:
1. Setup contacts
2. Ph call attempts
3. Repeat txt mssgs
4. Signal strength
5. System ph number
6. TXT cmd password
7. exit menu
PHONE ALARM
Setup contacts
Line 1:
Line 2:
C1 PH NUMBER
0 6 8 4 4 1 0 7 9
¯
C1 FROST USE
Repeat: enable

User manual
FROSTWATCH (All Models) – V3.20 Rev. September 2018 - 16 -
Step 5.
If TXT or Ph&TXT was selected in step 3, the user can select to receive a
prewarn TXT message to warn of approaching Frost alarm events, once
the temperature reaches the selected alarm point (section 5.1).
Using the DOWN or UP key, select either enable or disable.
Press the ENTER key to store the setting and advance to step 6.
Step 6.
After setting up the Frost Alarm contact settings for the selected contact,
a similar set of screens are given for the other alarms.
Step 7.
Using the DOWN or UP key, select enable or disable system TXTs.
If enabled, this contact will receive a TXT message if any system fault
occurs or any enabled digital input changes state.
Press the ENTER key to store the setting, and return to step 1 to set up
another contact.
The first system TXT enabled contact will receive repeated Network TXTs.
5.8.2 Ph call attempts
With the ph call attempts menu option chosen from the phone alarm
menu the screen will now display the message below.
Using the DOWN or UP key, adjust the amount of times the unit
will attempt to dial a phone number in Phone mode if, communications
cannot be established or, the receiving party does not answer and
terminate the call within 30 seconds.
Time between attempts is factory set to 1 minute.
Press the ENTER key to store the setting and return to the phone alarm
menu.
5.8.3 Repeat txt messages
With the repeat txt messages menu option chosen from the phone alarm
menu, the screen will now display the message below.
Using the DOWN or UP key, adjust the time interval at which TXT
messages are repeated during any alarm activation, for any contact who
has selected repeat txt messages for that type of alarm.
Press the ENTER key to store the setting and return to the phone alarm
menu.
PH CALL ATTEMPTS
up to 3
REPEAT TXT MSSGS
every 10 mins
C1 FROST USE
Prewarn: enable
C1 SYSTEM TXTs
Mode: enable
C1 SUNBURN USE
Alarm: TXT

User manual
FROSTWATCH (All Models) – V3.20 Rev. September 2018 - 17 -
5.8.4 Signal strength
Selecting the signal strength menu option displays the message
below.
B- = bad signal strength -G = good signal strength
The bars in between these two symbols represent the current
signal strength. The more bars the better!
Press any key to return to the phone alarm menu.
Adequate signal for reliable operation is 1 bar or better.
5.8.5 System ph number
Selecting the system ph number menu option displays
the units phone number.
Press any key to return to the phone alarm menu.
5.8.6 TXT command password
This allows password protection of various TXT controls
e.g. output control, callout stopping.
Using the DOWN or UP key, modify the number slot pointed to by the
flashing cursor. ENTER will move the cursor to the next number slot.
This password needs to be entered at the start of any TXT message
that controls the FrostWatch. Refer to the TXT Command table.
SIGNAL STRENGTH
B
-




-
G
SYSTEM PH NUMBER
? ? ? ? ? ? ? ? ? ?
TXT cmd password
1 2 3 4

User manual
FROSTWATCH (All Models) – V3.20 Rev. September 2018 - 18 -
6.0 Calibration menu
DO NOT adjust temperature settings unless you have the following items:
1. A known high and low temperature source.
2. A Precision Thermometer.
Accuracy of this unit will be impaired if these values are not set up precisely.
At the main screen hold down the ENTER key until calibration menu appears.
Using the DOWN or UP key, select the desired input to calibrate.
Press the ENTER key to proceed to the calibration menu for that input.
6.1 Temperature inputs
If A1 or A2 (if enabled) was selected at the previous screen, the following options are
displayed:
Using the DOWN or UP key rotate through the menu until the desired option is
displayed on line 2, then press the ENTER key.
6.2 Calibrate low point
Done where the temperature is below 5.0 ºc
Step 1.
With the Cal low point menu option chosen from the CAL. MENU, the screen
will now display the message below.
Using the DOWN or UP key, increase or decrease the set to temperature to the
actual temperature off the known low temperature source. Then press the
ENTER key.
Step 2.
Using the DOWN or UP key, select either yes to store the new low point
calibration values or no to exit without storing.
Press the ENTER key to proceed.
MENU LISTING:
1. Cal low point
2. Cal high point
3. Restore defaults
4. exit menu
CAL. MENU
Cal low point
Line 1:
Line 2:
Temp: 0 . 3 ºc
Set to: 0 . 0 ºc
ARE YOU SURE?
no
INPUT TO CAL.
Select: A1
Line 1:
Line 2: