QAR-3080 Level Controller
| 
The QAR-3080 capacitance probe is mounted in the vessel in which the level of liquid nitrogen is to be controlled and monitored.
The probe is connected to the QAR-3080 level indicator and controller unit by a low voltage cable. The QAR-3080 processes the signal from the probe, indicates the actual level of liquid on a panel meter (0 — 100%), displays the state of the control (eg. NORMAL, LOW LEVEL, HIGH ALARM, FILLING) and opens or closes an automatic cryogenic valve in the liquid inlet line to allow or to prevent the automatic refilling of the vessel.
For reliable automatic control of levels of liquid nitrogen in
- Cryostats
- Cold Traps
- Pressure Vessels
- Refrigerators
- Dewars
- Clear reading of liquid nitrogen 0 — 100%
- Adjustable Low Level and High Level control points
- Adjustable Low Alarm and High Alarm levels
- Manual ‘fill’ switch
Simple to install and use
Six easy to read ‘Status’ lights indicate the action of the controller.
Built-in audible alarm and connection for remote alarm.
Uses well proven ‘Capacitance Probe’ principle.
Can be used either with low voltage automatic valve for electrical safety (12 v DC) or with 240 or 110 v AC valves.
QAR-3030 Level Controller
|
The QAR3030 is an electronic automatic level control unit fitted with four level sensors on the ends of PTFE sheathed leads which are positioned at different heights within the vessel in order to control an automatic valve which allows liquid Nitrogen to enter the vessel and also to trigger alarms should liquid levels become too high or too low
For reliable automatic control of levels of liquid nitrogen in
- Cryostats
- Cold Traps
- Refrigerators
- Dewars
- Adjustable Low Level and High Level
- control points
- Adjustable Low Alarm and High Alarm
- levels
- Manual ‘fill’ switch
Simple to install and use with six easy to read ‘status’ lights to indicate the state of the vessel
