RTM-1 reference temperature monitor

The RTM-1 digital reference thermometer is a desktop device designed and manufactured by Gometrics for indicating temperature with a very high level of precision and an extremely high long term stability, giving it a level of reliability only found in sophisticated laboratory instruments.

The measuring circuit of the RTM–1 reference thermometer self-calibrates against an internal resistance standard, ensuring the stability needed for reliable measurements.

The keyboard of the RTM-1 reference thermometer allows the deviation function coefficients to be entered which, when read directly in ºC achieves a precision of 0,01 ºC in any value of the calibrated range between –200 and +200 ºC and 0,02 ºC between +200 ºC and +660 ºC, stable for one year.

Gometrics CA RTM1

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CHARACTERISTICS

2 x 20-digit backlit LCD display
Response time of 2 readings/sec
Input impedance of >10 MOhm (mV, T/C), 1 MOhm V and 5 Ohm (mA)

ADVANTAGES

Accepts RTD type resistance thermometers and thermocouples.
Incorporates a 16-bit microprocessor and a 24-bit A/D converter with 24-bit resolution.
Accepts direct mV, V, mA and Ohm readings

APPLICATIONS

Calibration of RTM1 by means of standard resistor.
Calibration of PT-100 thermoresistance and calculation of ITS-90 deviation coefficients.
Input of ITS-90 coefficients by keyboard

Description

DATA SHEET

Display	2 x 20 digits LCD 5,5 mm high, backlighted
Responding time	2 readings/sec
Input impedance	> 10 MOhm (mV, T/C), 1 MOhm V and 5 Ohm (mA)
Power supply	230 Vca ± 10%, 50/60 Hz (optional 110 Vca)
Weight	1,5 Kg
Dimensions	200 x 223 x 90 mm
Storage temperature	-10ºC to 60ºC
Operating time	0ºC to 50ºC
Room humidity	0% to 80% HR without condensation
Temperature coefficient	± 0.0005% RDG/ºC (only resistance measurement)
Temperature coefficient	± 0,001% RDG/ºC