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Version 1.0  

 

©Copyright 2013, Ambient LLC. All Rights Reserved. 

 

 

 

Page 7 

significantly from location to location. 
 
Prior  to  entering  the  calibration  mode,  press  the 

C

  button  until  the  channel  indication 

arrow 

  is pointing at the appropriate channel. 

 
To enter the temperature calibration mode, press and hold the 

ALARM/ADJUST and C   

buttons  at  the  same  time  for  5  seconds  and  the  temperature  value  will  begin  flashing.  Press  the 

C

  button  to  increase  the  temperature  and  the 

CLEAR/-

  button  to  decrease  the 

temperature  reading  in  0.1°  increments.  To  rapidly  increase  (or  decrease)  the  temperature  reading, 
press and hold the 

C

 or 

CLEAR/-

 button. 

 
To  return  the  temperature  to  the  actual  or  uncalibrated  measurement,  press  the 

ALARM/ADJUST

 

button. 
 
Once  the  displayed  temperature  equals  the  calibrated  source,  press and hold  the 

ALARM/ADJUST 

button for three seconds, or wait 15 seconds for timeout, and the temperature value will stop flashing. 
 

Discussion

:

 

Temperature errors can occur when a sensor is placed too close to a heat source (such 

as a building structure, the ground or trees). 
 
To calibrate temperature, we recommend a mercury or red spirit (fluid) thermometer. Bi-metal (dial) 
and other digital thermometers are not a good source and have their own margin of error. Using a local 
weather station in your area is also a poor source due to changes in location, timing (airport weather 
stations are only updated once per hour) and possible calibration errors (many official weather stations 
are not properly installed and calibrated). 
 
Place  the  sensor  in  a  controlled  environment  next  to  the  fluid  thermometer,  and  allow  the  sensor  to 
stabilize  for  48  hours.  Compare  this  temperature  to  the  fluid  thermometer  and  adjust  the  console  to 
match the fluid thermometer. 

4

 

Glossary of Terms 

 

Term 

Definition 

Accuracy 

Accuracy is defined as the ability of a measurement to match the actual 
value of the quantity being measured. 

Range 

Range is defined as the amount or extent a value can be measured. 

5

 

Specifications 

5.1 Wireless Specifications 

 

Line of sight wireless transmission (in open air): 300 feet, 100 feet under most conditions. 

 

Frequency: 433 MHz 

 

Update Rate: 60 seconds 

Summary of Contents for WS-091-C

Page 1: ... 2 Min and Max Alarm 5 3 2 1 Turning On and Off the Alarm 5 3 2 2 Setting the Min and Max Alarm 5 3 2 3 Viewing the Min and Max Alarms 5 3 3 Reset Max Min 5 3 4 Temperature Units of Measure 5 3 5 Sensor Search Mode 6 3 6 Best Practices for Wireless Communication 6 3 7 Adjustment or Calibration 6 4 Glossary of Terms 7 5 Specifications 7 5 1 Wireless Specifications 7 5 2 Measurement Specifications 8...

Page 2: ...ays displayed and 4 8 can be displayed in the indoor section of the display The WS 091C supports any combination of the following sensors sensors are sold separately Item Number Image Description F007T 8 channel sensor measures temperature Applications include indoor and outdoor temperature measurement F007TP 8 channel sensor measures probe temperature Applications include refrigerators and freeze...

Page 3: ...ew seconds to verify all segments are operating properly 3 Replace the battery door and fold out the desk stand and place the console in the upright position The console will instantly display indoor temperature as designated by the icon The remote temperature probes will update on the display within a few minutes on the appropriate channel While in the search mode the remote search icon will be c...

Page 4: ... Temperature units F or C 6 Max Temperature Indicator 7 Temperature Alarm 8 Maximum Temperature Channel 1 9 Minimum Temperature Channel 1 10 Maximum Temperature Channel 2 11 Minimum Temperature Channel 2 12 Maximum Temperature Channels 3 4 5 6 7 8 indictor 13 Low battery indicator 14 Minimum Temperature 3 4 5 6 7 8 indictor 15 Min Temperature Indicator 16 Indoor Temperature Indicator 17 Temperatur...

Page 5: ...m icon will appear when set and disappear when disabled The alarm will sound if the sensor falls bellow or rises above the MIN MAX limit 3 2 2 Setting the Min and Max Alarm With the indicator arrow pointing at the appropriate channel press and hold the ALARM button for 3 seconds and the MAX alarm will flash Press the CHANNEL button to increase the MAX alarm and the CLEAR button to decrease the MAX...

Page 6: ...monitors and TVs 2 Radio Frequency Interference RFI If you have other 433 MHz devices and communication is intermittent try turning off these other devices for troubleshooting purposes You may need to relocate the transmitters or receivers to avoid intermittent communication 3 Line of Sight Rating This device is rated at 300 feet line of sight no interference barriers or walls but typically you wi...

Page 7: ...cur when a sensor is placed too close to a heat source such as a building structure the ground or trees To calibrate temperature we recommend a mercury or red spirit fluid thermometer Bi metal dial and other digital thermometers are not a good source and have their own margin of error Using a local weather station in your area is also a poor source due to changes in location timing airport weather...

Page 8: ... are dashes on the display console If any of the sensor communication is lost dashes will be displayed on the screen To reacquire the signal press and hold the CHANNEL button for 3 seconds and the remote search icon will be constantly displayed Once the signal is reacquired the remote search icon will turn off and the current values will be displayed The maximum line of sight communication range i...

Page 9: ... AAA lithium batteries for cold weather climates 8 Liability Disclaimer Please help in the preservation of the environment and return used batteries to an authorized depot The electrical and electronic wastes contain hazardous substances Disposal of electronic waste in wild country and or in unauthorized grounds strongly damages the environment Reading the User manual is highly recommended The man...

Page 10: ...to which the receiver is connected Consult the dealer or an experienced radio TV technician for help 10 Warranty Information Ambient LLC provides a 1 year limited warranty on this product against manufacturing defects in materials and workmanship This limited warranty begins on the original date of purchase is valid only on products purchased and only to the original purchaser of this product To r...

Page 11: ...Version 1 0 Copyright 2013 Ambient LLC All Rights Reserved Page 11 ...

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