N9002 Differential Thermometer

Part No: N9002 (3329723)

The N9002 Differential Thermometer with eight thermocouple compatibility for maximum versatility in industrial, heating, ventilating, air conditioning and refrigeration applications.

  • Temperature Range: -328°F/-200°C to Thermocouple Limit
  • Thermocouples Supported: K, N, T, J, R, S, E, B
  • Scales °C, °F, K
  • Warranty: 2 Years

Differential Thermometer

The N9002 Differential Thermometer with eight thermocouple compatibility for maximum versatility in industrial, heating, ventilating, air conditioning and refrigeration applications.

Differential shown on screen between T1 and T2. Compatible with thermocouple types K, N, T, J, R, S, E and B.

  • Single and Dual (Differential) Inputs
  • Maximum and minimum temperature memory
  • Displays temperature in °C, °F and K
  • Hold function to freeze displayed reading
  • 2 year warranty and free certificate of conformity
  • Calibration – BS EN 60584 thermocouples (ITS90)
  • Selectable auto switch off
  • Sub-miniature connector
  • Dust and waterproof to IP67

 

Technical Specifications

NameValue
Sensor TypeThermocouple Types K, N, T, J, R, S, E and B
Measurement Range (Thermocouple Type K)-200°C to +1372°C / -328°F to +2502°F
Measurement Range (Thermocouple Type N)-200°C to +1300°C / -328°F to +2372°F
Measurement Range (Thermocouple Type T)-200°C to +400°C / -328°F to +752°F
Measurement Range (Thermocouple Type J)-200°C to +1200°C / -328°F to +2192°F
Measurement Range (Thermocouple Type R)-50°C to +1767°C / -58°F to +3212°F
Measurement Range (Thermocouple Type S)-50°C to +1767°C / -58°F to +3212°F
Measurement Range (Thermocouple Type E)-200°C to +1000°C / -328°F to +1832°F
Measurement Range (Thermocouple Type B)+100°C to +1820°C / +212°F to +3308°C
CalibrationBS EN 60584 thermocouples (ITS90)
Scales°C, °F, K
Resolution0.1° below +1000°, 1° above (autoranging)
Accuracy (at +23°C/+73°F)
Accuracy (Type K Only)<±0.1% of reading ±0.2°C/0.4°F
Connector Type2-Pin Sub­-Miniature
Operating Temperature Range-25°C to +50°C / -13°F to +122°F
Environmental ProtectionIP67 BS EN 60529 IEC 529
Battery Type2 x IEC LR6, Size AA
Battery Life200 hours
Warranty2 Years

*You will need to Sign In to view additional content

Documentation

Articles / FAQs

NameDate
My Device is showing unrealistic temperature readings

My Device is showing unrealistic temperature readings

If you have set up your Device correctly, inserted a Sub-Miniature Connector Probe into your Device and taken a temperature reading, only to discover that the temperature recorded is vastly different to that which was expected, then it may be that the Probe Connector was in fact inserted incorrectly.

The Sub-Miniature Connector on all Comark Probes has two prongs, one slightly larger than the other. These prongs are also marked as positive (+) and negative (-) on the cable head itself, as shown below.

Sub_Min_Right_Way_Round_c

The prongs correspond to two similarly shaped slots on the Device, one slightly larger than the other.

In some cases, it may be possible to force the prongs of the Sub-Miniature Cable Connector in the wrong way around. If this is done then the symptoms would be as described above, recorded temperatures that are vastly different to those which were expected.

Sub_Min_Wrong_Way_Round_c

To resolve such an issue, simply unplug the Sub-Miniature Cable Connector, check the prong orientation and then re-insert.

  • Small Slot = Positive
  • Large Slot = Negative

 

4th June 2015
How old is my Comark Product and is it still in Warranty?

How old is my Comark Product and is it still in Warranty?

The serial number on most Comark Products is usually the date of manufacture followed by a unique product number.

For example, 02121234 is (02) for February, (12) for year 2012, and (1234) is the number of the individual product.

This works for all C series Thermometers, Evt2 and N2000 Data Loggers, RF51X Transmitters, KM2xx, P250FW, BT250 etc.

Warranty on most Comark Thermometers is 1 year. However, in reality Comark will give a little over the relevant warranty period to allow for distributor stock.

21st April 2015
My device has corrosion in the battery compartment

My device has corrosion in the battery compartment

This may cause your device to cease functioning, or become dangerous. In all cases, please return your instrument to Comark for servicing.

FPP_010

Ideally, prevention is better than cure for this problem. Check your batteries regularly to ensure they have not leaked, and if you are planning to store the instrument without use for a prolonged period, please consider removing the batteries and storing them separately.

16th April 2015