Page 346 - Praxair - Specialty Gases and Equipment Reference Guide

Cryogenic Products

TEC 3000 Controller

TEC 3000 Controller
The TEC 3000 controller employs a variety of advanced features that
enable the controller to monitor and control the environment inside a
freezer with a high level of precision. The TEC 3000 controller is
available for MVE HEco Series, MVE High Efficiency Series, MVE Series,
MVE Stock Series, and MVE CryoSystem 6000 Full Auto freezers. Section E – Gas Handling Equipment

Features and Benefits Specifications
n Liquid nitrogen level management n Level Measurement n Standard Alarms, continued
n Sensor type – Dual port pressure
n Automatic liquid nitrogen level control transducer measurement accuracy n Full time alarm
n Two channel temperature measurement +/- 0.5 in (+/- 13 mm) typical n Power failure (remote only)
n Lid open alarm
n Multiple-use adjustable alarms n Liquid usage feature n Usage warning and alarm
n Adjustable security/password system n Two point calibration feature n Temperature calibration alarm
n One fill-all fill capability (sequential or n Level Control (probe A & B)
n Bypass sensor failure
simultaneous) n Range 3-48 in (76-122 mm) n Bypass time
n Timed filling n Control output – Fill solenoid valve n Bypass sensor calibration
n 24 VDC, 1.0 amp (maximum)
n Gas bypass n Temperature Measurement n Power failure (audible, visual
n Battery backup (optional) n Two sensors, platinum RTD – and remote alarms)
n Low battery voltage
Two wire element
• Accuracy +/- 2.0°C full scale n Alarm Output
• Altitude compensation for accuracy n Both visual and audible alarms
• Full range calibration feature n One global remote alarm relay
• Probe heater for high temperature n Four discrete remote contacts
alarm testing • Temp A high
• Low level
n Front Panel Display • High level
n Backlit LCD readout, • Low battery (optional when equipped
4 row x 20 character with battery backup)
n Level display – in, mm, %
n Temperature display – °C, °F, or K n Controller Features
n Communication interface – Serial
n Standard Alarms communication RS485/ASCII/MODBUS
n Low level alarm n Memory – Stores time and date stamp
n High level alarm information on the controller’s 30,000
n Low temperature (probe A & B) most recent events
n High temperature (probe A & B)

1-877-PRAXAIR www.praxairdirect.com E•345