Functions and use
Programmable indicator PMT-920 is applicable to cooperation with the temperature sensors. Indicator works with resistance sensor Pt (Pt100, Pt500, Pt1000). PMT-920 can be connected with 2-, 3- or 4- wire sensors.
Indicator recognize 3- and 4- wire sensors and compensate line resistance automatically. Two alarm values controlling the relay outputs can be programmed. Diodes on the front of the indicator indicate the exceeding of the alarm values. The relay outputs have a pair of operating contacts.
PMT-920 meters enables the following parameters to be programmed:
* Level and hysteresis of action of relays;
* State of contact during alarm;
* Password restricting access to the programming menu;
* Display filtering level.
* Color of display (green or red).
Technical data
Input signal Pt100, Pt500, Pt1000
Indication range -100…600°C
Display error 0,25% ± 1 digit
Resolution 0,1°C
Relay outputs 2
1 A, 250 V AC, cosö=1
Power supply 85...260V AC/DC
Integrated power supply: 24 V DC stab., max. 100 mA
Operating temperature 0…50°C (special version -20…50°C)
Storage temperature -10…70°C (special version -20…70°C)
Display size: LED 4x13mm
Casing panel type
IP 40 (from the front)
IP 20 (from the terminals)