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General
Range/Sensor type Pt100 to IEC 751 (ITS 90 refers). –199.99 to 849.99°C.Ro=
100Ω. Two input channels, each 3 or 4 wire connection with
automatic recognition (with manual overrride).
Overall Instrument ±0.02°C ± 1 digit for range -200°C to +500°C.
Accuracy (4 wire) ±0.005% reading ± 1 digit for range 500°C to 850°C.
Overall System Better than ±0.04°C with TM-l250 precision probe accuracy
(4 wire) from -50°C to +250°C with 5 point NAMAS
calibration.
Linearisation
Conformity ±0.01°C.
Stability
(vs ambient
temperature) 0.0025°C/°C ambient change.
Warm-up Time Negligible under normal ambient conditions. Allow 5 to 10
minutes for full stability unless stored at low temperature,
then allow 30 minutes minimum.
Pt100 Sensor Current 0.5mA nominal.
Display Resolution 0.01°C, K, °F, Ω.
Measurement Units °C, °F, K, Ω (user selectable).
Measurement Modes Input A or B or A-B (differential). Null facility in A-B mode.
Custom Calibration
(via PC software) Up to 10 calibration values can be allocated to (via PC
software) channels A and B. Values are retained in non-
volatile memory until replaced by user.
Null Function Corrects differential temperature readout between the two
Sensors to zero.
Sensor Lead
Resistance 25Ω each lead maximum.
Page 17
Supply
Internal rechargeable batteries. Mains 110/240V 50/60Hz,
adapter included. Battery charge life up to 12 hours with full
charge dependent on pattern of usage.