Document Reference: X-0036-01-07 Cadmus & Ratifi Operating Manual
Drawn: 13/11/2020
Page 20 of 66
1.11
Connect External Sensors
Base Connections
1.11.1
Connecting Pt1000 temperature sensors.
Channels 3 and 4 are designed for 2-wire Pt1000 sensors. These sensors can be purchased directly from Signatrol Ltd. There are two connection methods for Pt1000
sensors show below. Pt1000 sensor are non-polarised and be connected either way around. If a sensor is disconnected or becomes open-circuit the channel will
in400°C (+752°F), if a sensor becomes short-circuit the channel will indicate -200°C (-328°F). Sensors should be connected via the Jack or the Terminal
strip, but not to both at the same time on the same channel. Otherwise incorrect readings will be obtained.
CTX-203 and CTX-213 models
Connection via 3.5mm jack plugs.
Channel 3 = Black (Upper) socket.
Channel 4 = Turquoise (Lower) socket.
Sensors supplied with jack connectors will be supplied with a loose Turquoise cover
label, this should be applied if the sensor is connected to Channel 4.
Connection via enclosure base terminal strip.
Channel 3 should be connected to pins 1 & 2.
Channel 4 should be connected to pins 3 & 4.
Wire colours are only a guide. Wire colours may change depending on manufacturer.
CTX-303 model
Connection via enclosure base terminal strip.
Channel 3 should be connected to pins 1 & 2.
Channel 4 should be connected to pins 3 & 4.
Wire colours are only a guide. Wire colours may change depending on manufacturer.
Connector lifts off pin header for easy connection.
