Monarch 309 Manual De Usuario

 

 

3 

Plug as many thermocouples as are to be monitored into the sockets marked 

T1 through 

T4, taking care to observe the polarity of the thermocouple pins. If a differential 
measurement is required, this is available only between 

T1 and T2, which determines 

which thermocouples should be connected to these locations. 

The      button turns both the thermometer and the display backlight 
ON or OFF. Press it once to turn the thermometer ON. Every 
subsequent momentary press toggles the backlight ON or OFF. 
Press and hold this button for 3 seconds to turn the power OFF. 
When first powered on, the display will show how much memory 
space is available for use, as shown to the right. 

When first turned on, the instrument defaults to reading in Celsius (°C). The instrument 
toggles between Celsius (°C) and Fahrenheit (°F) each time the 

°C/°F button is pressed. 

The instrument remembers the scale setting when last turned off and powers on in that 
setting the next time. 

The present reading is held on the display by pressing the 

HOLD button. Pressing the 

HOLD button again releases the hold function and returns the instrument to 

 

 

 

 

 

 

continuous reading.

 

  

In the 

HOLD mode, the T1-T2, MAX MIN and °C/°F buttons are disabled, as indicated by 

two continuous beeps when pressed. 

When the 

T1-T2 button is pressed, the display will indicate 

1

 

–

 

2 

indicating the instrument is in the differential mode of 

T1 minus T2. 

The display then indicates 

T1 value on the top left, T2 value on the 

bottom left, and the difference 

T1-T2 on the bottom right. 

To set the real time clock: 

 

1.  Press and hold the 

T1-T2 button and then power on the meter. 

 

2. Press 

HOLD (clock). 

3. Press 

REC  (

n) or °C/°F  (p) to increase or decrease the 

number; press 

HOLD to advance to the next item. The 

adjusting order is: year

; month; day; hour; minute. Press HOLD 

again after the last setting to complete the process.  
To abort during a setup process, press the       button. 

To set the recording interval: 

 

1.  Press and hold the 

T1-T2 button and then power on the meter. 

 

2. Press 

MAX MIN (interval). 

 

3. Press 

REC  (

n) or °C/°F  (p) to increase or decrease the 

number; press 

MAX MIN to advance to the next item. Press 

MAX MIN again after the last setting to complete the process. 
To abort during a setup process, press the       button. 

 

 

4 

TX

R X

G N D

Each momentary press of the 

REC button will alternately start and 

stop recording. To clear the memory, power off the meter, press 
and hold the 

REC button followed by the       button, holding both 

on simultaneously for at least 5 seconds. The display will show 
‘CLR’ ‘SURE 5’, and releasing all buttons then clears the memory. 

Press the 

MAX MIN button to enter the MAX/MIN mode. In this mode, both the maximum 

and minimum values are simultaneously retained in memory and updated with every new 
data sample. The instrument first enters the MAX mode, and the MAX symbol and value 
are both displayed. Pressing 

MAX MIN again advances the display to the MIN symbol 

and value. The next press of the 

MAX MIN button will cause both the MAX and MIN 

symbols to flash. This indicates that the maximum and minimum values have been 
updated in memory and the displayed reading is the present temperature. Each 
successive press of the 

MAX MIN button circulates the display mode among these 

options. To exit the MAX/MIN mode, press and hold the 

MAX MIN  button  for     

two seconds. 
In the MAX/MIN mode, the 

°C/°F  button is disabled, as indicated by two consecutive 

beeps if pressed. 

By default, the instrument powers on in the ‘Auto Power Off’ mode and will automatically 
shut off 30 minutes after the last key operation or RS232 communication.    
To disable this feature, press and hold the 

HOLD button and then power on the meter.  

Two successive beeps will indicate that ‘Auto Power Off’ is disabled, and the      will not 
be displayed.

When the battery voltage is at or below the minimum for proper operation, the    
 

symbol will show on the display indicating that the battery must be replaced. 

Calibration is conducted by adjusting the following potentiometers to within the 
tolerances shown. 
(Ambient Temperature: 23 ± 3°C)

 

0 °C 

VR1 

 

± 0.1 °C 

 

190 °C 

VR2 

 

± 0.1 °C 

  1000 °C 

VR3 

 

± 1 °C 

  1900 °F 

VR4 

 

± 1 °F 

The Digital Output is a 9600 bps N 81 serial interface. 
RX is a 5V normally high input port. 
TX is a 5V normally high output port. 

 

TP-K01 

Wire probe 

-50°C to 200°C 

-58°F to 392°F 

±2.2°C or ±0.75% 

±3.6°F or ±0.75% 

Teflon insulation. Maximum insulation 

temperature: 260°C (500°F) 

 

Probe for general condition measurements, especially 
for complex and hard to reach places.

 

 

A simple single point calibration may be 
performed by adjusting VR1 to 0 °C with 
thermally stabilized ice water.