wtw EcoLine LF 170 Bedienungsanleitung Seite 134

Temperature Temperature
measurement measurement
Temperature sensor Temperature sensor
Accuracy Accuracy
Resolution Resolution
Inputs / outputs Inputs / outputs
digital Interface digital Interface
Sensor input Sensor input
Contact outputs Contact outputs
Signal outputs Signal outputs
Connector terminals Connector terminals
Protection type Protection type
Lightning protector Lightning protector
(inputs and outputs) (inputs and outputs)
Electrical instrument Electrical instrument
protection protection
Housing Housing
140 140
Technical data Technical data
NTC NTC
± 0.2 K ± 1 digit ± 0.2 K ± 1 digit
Additional fine adjustment of ± 0.5 K Additional fine adjustment of ± 0.5 K
0.1 K 0.1 K
RS-485; 2(3)-wire connection bus operation with up to RS-485; 2(3)-wire connection bus operation with up to
31 units is possible 31 units is possible
7-contact round plug connector with screw fixing 7-contact round plug connector with screw fixing
Relay 1/ Relay 2 Relay 1/ Relay 2
• max. switching voltage 250 VAC • max. switching voltage 250 VAC
• max. switching current 5 A • max. switching current 5 A
• max. switching capacity 150 W (ohmic load) • max. switching capacity 150 W (ohmic load)
0/4 to 20 mA; electrically isolated from the input 0/4 to 20 mA; electrically isolated from the input
Recorder ranges and recorder attenuation can be set Recorder ranges and recorder attenuation can be set
via software via software
• Basic accuracy • Basic accuracy
• Load • Load
• Load effect • Load effect
Accessible after opening the instrument; Accessible after opening the instrument;
Cable inlet by 4 PG screws Cable inlet by 4 PG screws
Connector cross section 0.5 to 2.5 mm² Connector cross section 0.5 to 2.5 mm²
• Power supply • Power supply
• Relay 1/2 • Relay 1/2
• SENS Check • SENS Check
• Recorder connections each 2-contact • Recorder connections each 2-contact
• Sensor • Sensor
• Coarse protection 90 V / 1.5 KA (8/20µs) • Coarse protection 90 V / 1.5 KA (8/20µs)
• Fine protection 600 Watt • Fine protection 600 Watt
Safety class Safety class 2 according to IEC 1010 2 according to IEC 1010
IP 54 IP 54
Functions, limit controller Functions, limit controller
0.1% 0.1%
max. 600 Ohm max. 600 Ohm
< 0.1 % < 0.1 %
2-contact 2-contact
each 2-contact each 2-contact
2-contact 2-contact
6-contact 6-contact