Now available in a non-mercury version, these sensors provide you with the stability, sensitivity and performance you have come to expect from the traditional mercury based Thermo Scientic Ramsey Tilt Switches.
The Thermo Scientific Ramsey Mercury-Free Tilt Sensor uses advanced technology inside the tilt probe to replicate the same performance found in traditional mercury based Thermo Scientific Ramsey Tilt Switches. A combination of opto-electronics and solid state circuitry inside the probe prevents jitter and provides stability not found in the typical non-mercury options. The precision manufacturing of the tilt probe provides sensing of a 15 degree inclination in a full 360 degrees of direction. Multiple models of the tilt probe are available for applications with a wide variety of materials and environmental conditions. All probes have fully encapsulated electronics and come with the necessary mounting hardware.
The field-mount control unit includes the traditional green “Normal” and red “Alarm” indicators with LED illuminators (a DIN mount control is also available). The DPDT relay contacts give you two normally open and two normally closed connections for your external alarms and/or controls. An internal jumper allows you to select whether “Normal” is a horizontal or a tilted position. An adjustable time delay inside the control prevents a momentary tilting of the probe from causing a false or premature contact transfer. Interruption of line power will cause a contact transfer.
Features and benefits
- Rugged, abrasion-resistant tilt probes
- Simple installation
- All probes include mounting hardware
- Solid-state control unit with printed circuit boards
- Control unit is available in: field mount NEMA 4, field mount NEMA 4X, DIN mount NEMA 1
- User adjustable time delay to prevent false alarms
- LED status lights — no bulbs to change
- cCSAus and ATEX approved versions suitable for hazardous area applications
Ramsey Mercury-Free Tilt Sensor Controls
The sensor consists of a control unit and a tilt probe. Due to the nature of the stabilizing electronics, tilt probes cannot be used without a controller.
Field Mount Control
(SST IP65/NEMA 4X)
20-35-NM-F-4X
21-35-NM-F-CSA-4X
Field Mount Control
(SST IP65/NEMA 4X)
20-35-NM-F-4X
21-35-NM-F-CSA-4X
DIN Mount Control (IP20/NEMA 1)
20-35-NM-DIN
Ramsey Mercury-Free Tilt Sensor Probes
Standard 1 in. Nickel Plated
Cast Ductile Iron Probe
20-59-NM
21-59-NM
1 in. Light Weight
Plastic Probe
20-55-NM-P
1 in. Stainless Steel Probe
20-54-NM-SS
21-54-NM-SS
2 in. Heavy Weight Probe
20-52-NM
21-52-NM
Tilt Sensor Probe Models
20-59-NM
20-54-NM-SS
20-55-NM-P
20-52-NM
Specifications
| Tilt Sensor Probes | ||
| Tilt Sensor Probes | All models | -40°C (-40°F) to +50°C (+122°F) |
| Protection | All models | IP67 (NEMA 4x) |
| Mounting Hardware | All models | Hanger and two S-hooks included |
| Certifications | All models | cCSAus, CE |
| Hazardous Area Certifications | 21-59-NM/ 21-54-NM/21-52-NM | ATEX Zone 20/21 and cCSAus Class I, Div 1 & 2, Groups A,B,C & D and Class II, Div 1 & 2, Group E,F & G, CE |
| Contollers | ||
| Input Power | All Models | 115/230 VCA, 50/60 Hz |
| Alarm Contact Rating | 20-35-NM-DIN All other models | (1) NO-2Amp @115/230VAC, 3 Amp@ 23VDC (2) SPDT-10 Amp @115/230 VAC, 7 Amp @ 30 VDC non-inductive |
| Fault Contact Rating | All Models | (1) NO-rated for 2 Amp @ 115/230 VAC, 7 Amp @ 24 VDC |
| Time Delay | All Models | 1,2,4 or 6 seconds selectable by jumpers |
| Temperature Rating | All Models | -40 °C (-40 °F) to +50 °C (+122°F) |
| Protection | 20-35-NM-DIN All other models | IP20 (NEMA 1) IP65 (NEMA 4 or NEMA 4X) |
| Certifications | All 20-35 models | cCSAus, CE |
| Hazardous Area Certifications | 21-35-NM-F-CSA/21-35-NM-F-CSA-4X 21-35-NM-F-ATEX | cCSAus Class I, DIV 2, Group A,B,C & D and Class II, Div 1 & 2 Group E,F & G, CEATEX Zone 22, CE |
