Metrix MTX 3292 - Page 56

Technical characteristics
56 100,000 cts digital multimeters
Technical characteristics of the MTX 3292, MTX 3293 (continued)
Temperature
Pt100/Pt1000
The user can measure the temperature by means of a Pt100/Pt1000 sensor.
Range
Measurement current
Resolution
Accuracy
Protection
-125°C to
+ 75°C
<1mA (Pt100)
<0.1mA (Pt1000)
0.1°C
---
 0.5°C
1414 Vpk
-200°C to
+ 800°C
<1mA (Pt100)
<0.1mA (Pt1000)
0.1°C
---
0.1% L  1°C
0.07% L  1°C
“Active” protection by PTC thermistor
Display in °C/°F possible
J and K
thermocouples
Function
Internal temperature
External temperature
Type of sensor
Integrated circuit
K thermocouple
Display range
1,000°C
1,000°F
1,000°C
1,000°F
10,000°C
10,000°F
Specified measurement domain
-10.0°C to + 60.0°C
+ 14.0°F to + 140.0°F
-40.0°C to + 999.9°C
-40.0°F to + 1,831.8°F
+ 1,000°C to + 1,200°C
+ 1,832°F to + 2,192°F
Uncertainty (note 1)
±3°C
±5.4°F
1% L ±3°C
1% L ±5.4°F
1% L ±3°C
1% L ±5.4°F
Resolution
0.1°C
0.1°F
0.1°C
0.1°F
1°C
1°F
Thermal time constant (note 2)
0.7 min./°C
Depending on model of sensor
Detection of sensor open-circuit
No
Yes: indication of the internal temperature
although the external sensor is connected
Note 1: The stated accuracy in external temperature measurement does not take into
account the accuracy of the K thermocouple.
Note 2: Operation of the thermal time constant (0.7 min/°C):
If there is a sudden variation of the temperature of the multimeter, by 10°C for
example, the multimeter will reach 99% of the final temperature at the end of
5 time constants, or 0.7min/°Cx10°Cx5 cts = 35 min (to which must be added the
constant of the external sensor)
Protection: 1,414 Vpk
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