Manual

ManualsBrandsNova-Tech ManualsEquipment4238-4239-4240 TRACEABLE HIGH ACCURACY REFRIGERATOR THERMOMETER

VIEWING THE TIME-OF-DAY/DATE

To view the time-of-day/date, slide the DISPLAY switch to

the DATE TIME position.

DISPLAYING °F OR °C

To display the temperature readings in Fahrenheit or

Celsius, slide the °C/°F button to the desired position.

DISPLAYING PROBE 1 OR PROBE 2

Slide the PROBE switch to the desired position (1 or 2) to

display the desired temperature sensor readings.

MINIMUM AND MAXIMUM MEMORY

There are four points that are automatically recorded into

memory:

•

Minimum (MIN) Probe 1 (P1) Temperature

Achieved with time-of-day and date achieved

• Maximum (MAX) Probe 1 (P1) Temperature

Achieved with time-of-day and date achieved

• Minimum (MIN) Probe 2 (P2) Temperature

Achieved with time-of-day and date achieved

• Maximum (MAX) Probe 2 (P2) Temperature

Achieved with time-of-day and date achieved

Minimum and maximum temperature memories

are NOT programmable. The minimum temperature

recorded into memory is the minimum temperature

achieved since the last time the memory was cleared.

The maximum temperature recorded into memory is

the maximum temperature achieved since the last time

the memory was cleared. The minimum and maximum

temperature memories are maintained over the period

since the memory was cleared.

Minimum and maximum memories are recorded for both

sensors regardless of the display mode.

VIEWING MIN/MAX MEMORY

1. Slide the PROBE switch to the desired position (1 or

2) to display the desired temperature sensor readings.

2. Slide the DISPLAY switch to the MIN MAX position.

The display will show the current temperature and

minimum/maximum memory for the selected probe.

VIEWING MIN/MAX MEMORY DATE/TIME

1. Slide the PROBE switch to the desired position (1 or

2) to display the desired temperature sensor readings.

2. Slide the DISPLAY switch to the MIN MAX position.

The display will show the current temperature and

minimum/maximum memory for the selected probe.

3. Press the EVENT DATE TIME button, the minimum

temperature achieved by that probe along with the

time-of-day/date the temperature was achieved will

appear on the display (indicated by MIN and TIME

appearing on the display).

4. Press the EVENT DATE TIME button a second time,

the maximum temperature achieved by that probe

along with the time-of-day/date the temperature was

achieved will appear on the display (indicated by

MAX and TIME appearing on the display).

Note: If no button is pressed for fteen (15) seconds,

the unit automatically returns to the current temperature

display mode.

To exit from the memory display mode, press and

release the EVENT DATE TIME button until MIN or

MAX no longer appears on the display, or simply do

not press any button for fteen (15) seconds.

CLEARING THE MINIMUM/MAXIMUM MEMORY

Slide the PROBE switch to the desired position (1 or

2) to display the desired temperature sensor readings.

2. Slide the DISPLAY switch to the MIN MAX position.

The display will show the current temperature and

minimum/maximum memory for the selected probe.

3. Press the CLEAR MIN MAX button to clear the

minimum and maximum memories for the probe

being displayed.

ALARMS

Both temperature sensor (P1/P2) alarm limits may be set

in 0.1° increments. Probe 1 and Probe 2 alarm limits are

set independent of each other.

With the alarm switch set to the ON position:

-The unit will sound an alarm and ash the corresponding

LED (P1/P2) when the temperature measured is outside

the alarm limits that have been set (equal to or lower than

the low alarm set point, or equal to or greater than the

high alarm set point).

-The alarm will sound regardless of which sensor is being

displayed and regardless of the display mode. Example:

If Probe 1 is being displayed and the DISPLAY switch is

set to MIN MAX, but Probe 2 reaches an alarm condition,

the alarm will sound and the P2 LED will ash.

SETTING THE TEMPERATURE ALARM LIMITS

1. Slide the PROBE switch to the desired position (1 or

2) to display the desired temperature sensor readings.

2. Slide the DISPLAY switch to the ALARM position.

The display will show the current temperature and

low/high alarm set points for the selected probe.

3. While in the alarm display mode, pressing the SELECT

button will allow the alarm limits to be set.

Pressing the SELECT button will cause the digits to

ash in the following order: Low Alarm 1st Digits→Low

Alarm 2nd Digit→Low Alarm Decimal Digit→ High Alarm

1st Digits→High Alarm 2nd Digit→High Alarm Decimal

Digit→No digits ashing (value set).

4. Once the desired item is ashing, pressing the

ADVANCE button will increment the value.

5. With the desired alarm set points appearing on the

display, press the SELECT button until no digits

are ashing on the display. The alarm settings will

be saved.

Note: While in the setting mode, if no button is pressed

for fteen (15) seconds, the unit automatically exits from

the setting mode.

PECIFICATIONS

Range: -58.00 to 158.00 °F

-50.00 to 70.00 °C

Accuracy: ±0.3 °C

Resolution: 0.01°

Update Rate: 1 second (FAST)

10 seconds (NORMAL)

Battery: 2 each AAA (1.5V)

Probes Supplied:

Model 4238-- Supplied with 1 bottle probe. Designed

for use in refrigerators and freezers, bottle probes are

lled with a patented nontoxic glycol solution that is

GRAS (Generally Recognized As Safe) by the FDA

(Food and Drug Administration) eliminating concerns

about incidental contact with food or drinking water.

The solution lled bottle simulates the temperature

of other stored liquids. Velcro

and a magnetic strip

are provided to mount the bottle to the inside of a

refrigerator/freezer. The micro-thin probe cable permits

refrigerator/freezer doors to close on it. (Do not

immerse bottle probes in liquid).

Model 4239-- Supplied with dual bottle probes. (Do not

immerse bottle probes in liquid)

Model 4240-- Supplied with dual standard probes with

cables. Designed for use in air and liquids, the sensor

and cable may be completely immersed.

SETTING THE TIME-OF-DAY/DATE

Slide the DISPLAY switch to the DATE TIME position, the

display will show the time-of-day and date.

While in the time-of-day/date display, pressing the

SELECT button will allow the date and time to be set.

Pressing the SELECT button will cause the digits to ash

in the following order Year→Month→Day→Hours→

Minutes →12/24 hour time→No digits ashing (value

set). Once the desired item is ashing, pressing the

ADVANCE button will increment the value.

While in the time-of-day/date display, pressing the

EVENT DATE TIME button will switch the date display

between Month/Day (M/D) and Day/Month (D/M).

With the desired time-of-day/date appearing on the display,

press the SELECT button until no digits are ashing on the

display. The time-of-day/date will be saved.

Note: While in the setting mode, if no button is pressed

for fteen (15) seconds, the unit automatically exits from

the setting mode.

VIEWING THE TEMPERATURE ALARM LIMITS

1. Slide the PROBE switch to the desired position (1 or

2) to display the desired temperature sensor readings.

2. Slide the DISPLAY switch to the ALARM position.

The display will show the current temperature and

low/high alarm set points for the selected probe.

ENABLE/DISABLE ALARMS

To enable the alarm to activate when a temperature

measured is outside the alarm limits, slide the ALARM

switch to the ON position.

When the alarm is enabled, both Probe 1 and Probe 2

alarm set points will be monitored. If either sensor reaches

an alarm condition, the alarm will activate. It is not possible

to enable the alarm for one sensor and disable the alarm

for the other sensor.

To disable the alarm so that no alarm sounds when a

temperature measured is outside the alarm limits, slide

the ALARM switch to the OFF position.

LARM SOUNDING

With the alarm enabled, the unit will sound an alarm and

the corresponding (P1/P2) red LED will ash when a

temperature being measured is outside the alarm limits

that have been set (equal to or lower than the low alarm

set point, or equal to or greater than the high alarm set

point). Until it has been acknowledged/silenced (see

the “Acknowledge/Silence An Alarm” section), the alarm

will sound and corresponding (P1/P2) red LED will ash

continuously for the rst sixty (60) seconds. After 60

seconds, the alarm will sound and LED will ash for ten

(10) seconds every minute.

If the alarm is sounding based on the low alarm limit and

the probe temperature is being displayed, “LO ALM” will

also ash on the display. If the alarm is sounding based

on the high alarm limit and the probe temperature is

being displayed, “HI ALM” will ash on the display.

The alarm will sound and corresponding LED will ash

regardless of which sensor is being displayed and

regardless of the display mode. Example: If Probe 1 is

being displayed and the DISPLAY switch is set to MIN

MAX, but Probe 2 reaches an alarm condition, the alarm

will sound and the P2 LED will ash.

The unit will continue to alarm and ash the corresponding

(P1/P2) red LED until the alarm has been acknowledged/

silenced by either pressing the SILENCE ALM button or

by sliding the ALARM switch to the OFF position (see the

“Acknowledge/Silence An Alarm” section). The unit will

continue to alarm and ash the corresponding (P1/P2) red

LED even if the temperature being measured returns to an

in-range/non-alarm condition.

Summary of content (2 pages)

PAGE 1
Specifications Range: -58.00 to 158.00 °F -50.00 to 70.00 °C Accuracy: ±0.3 °C Resolution: 0.01° Update Rate: 1 second (FAST) 10 seconds (NORMAL) Battery: 2 each AAA (1.5V) Probes Supplied: Model 4238-- Supplied with 1 bottle probe. Designed for use in refrigerators and freezers, bottle probes are filled with a patented nontoxic glycol solution that is GRAS (Generally Recognized As Safe) by the FDA (Food and Drug Administration) eliminating concerns about incidental contact with food or drinking water.
PAGE 2
AcKNOWLEDGe/silence AN ALARM While alarming, the alarm may be acknowledged/silenced in one of the following ways: 1. Slide the ALARM switch to the OFF position. Setting the ALARM switch to the OFF position will silence the alarm, but when it is switched back to the ON position, if the temperature being measured is still in an alarm condition, the alarm will sound. Setting the ALARM switch to the OFF position prevents any/all alarms from sounding. 2. Press the SILENCE ALM button.