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Watlow
Watlow SERIES LV Limit Controller
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Microprocessor high/low limit; TC/RTD; 1/8 DIN/DIN-rail. RFQ + selection help.
Download datasheet PDF
RFQ cart holds BOM lines only. Submit for engineering quote.
Key parameters
Measuring range
Thermocouple and 2-wire RTD inputs (SERIES LV variable limit family)
Accuracy
Microprocessor-based limit; see winbltc0320 / Limits catalog for type-specific accuracy
Output
Relay output (typically 8 A class per SERIES LV literature); high or low limit operation
Supply
Multiple line-voltage options per ordering (see Watlow SERIES LV catalog pages)
Ambient temperature
Per Watlow Basic Temperature and Limit Controllers specification sheet
Display
Four-digit LED; rotary encoder setpoint adjustment (variable SERIES LV)
Fits adjustable high/low temperature limit protection where you need a Watlow SERIES LV microprocessor-based limit controller with thermocouple or 2-wire RTD input and relay output.
Key advantages
- Function — Microprocessor-based adjustable high or low limit with manual or automatic reset
- Inputs — Thermocouple and 2-wire RTD
- Output — Relay output (typically 8 A class per SERIES LV literature)
- UI — Four-digit LED with rotary encoder setpoint
- Mounting / approvals — 1/8 DIN panel and DIN-rail options; UL / CSA / CE / FM (confirm package)
Typical applications
- Over-temperature limit on heater circuits.
- OEM equipment needing FM-style limit packages.
- Retrofits matching SERIES LV footprints.
Selection guide
- High vs low limit — Process protection direction
- Sensor — TC type vs 2-wire RTD
- Reset — Manual vs automatic
- Mounting — 1/8 DIN vs DIN-rail
- Approvals — Confirm FM package on order code
Common mistakes
- Using a limit controller as the only PID temperature controller.
- Mismatched TC type vs input code.
- Assuming FM approval on every LV code without checking.
When to RFQ / what to tell us
- High/low; sensor type; reset mode.
- Mounting; line voltage; approvals.
- Quantity and ship-to.
Request a Quote · Get selection help
Specs
| Spec | Value |
|---|---|
| SKU | 20367 |
| Brand | Watlow |
| Model | SERIES LV |
| Product type | Limit Controller |
| Measuring / input | Thermocouple and 2-wire RTD inputs (SERIES LV variable limit family) |
| Accuracy notes | Microprocessor-based limit; see winbltc0320 / Limits catalog for type-specific accuracy |
| Output | Relay output (typically 8 A class per SERIES LV literature); high or low limit operation |
| Supply | Multiple line-voltage options per ordering (see Watlow SERIES LV catalog pages) |
| Sensor type | Thermocouple / RTD (2-wire) |
| Display | Four-digit LED; rotary encoder setpoint adjustment (variable SERIES LV) |
| Approvals | UL; CSA; CE; FM (limit family — confirm exact LV package on order code) |
| Mounting | 1/8 DIN panel-mount and DIN-rail package options |
| Notes | Microprocessor-based adjustable high/low limit controller with manual or automatic reset. OEM Watlow winbltc0320 + Limits and Scanners catalog. |
Documents
- Watlow SERIES LV / Limits documentation — request current OEM PDF on RFQ — request current OEM PDF on RFQ
FAQ
Q: Is SERIES LV a PID controller? A: It is a limit controller family — high/low limit with relay output.
Q: Sensor types? A: Thermocouple and 2-wire RTD.
Q: What should I send for a quote? A: Limit direction, sensor, mounting, voltage, quantity, ship-to.
Links
| Parameter | Value |
|---|---|
| Measuring range | Thermocouple and 2-wire RTD inputs (SERIES LV variable limit family) |
| Accuracy | Microprocessor-based limit; see winbltc0320 / Limits catalog for type-specific accuracy |
| Output | Relay output (typically 8 A class per SERIES LV literature); high or low limit operation |
| Supply | Multiple line-voltage options per ordering (see Watlow SERIES LV catalog pages) |
| Ambient temperature | Per Watlow Basic Temperature and Limit Controllers specification sheet |
| Display | Four-digit LED; rotary encoder setpoint adjustment (variable SERIES LV) |
| Approvals | UL; CSA; CE; FM (limit family — confirm exact LV package on order code) |
| Mounting | 1/8 DIN panel-mount and DIN-rail package options |
| Sensor type | Thermocouple / RTD (2-wire) |
| Notes | Microprocessor-based adjustable high/low limit controller with manual or automatic reset. OEM Watlow winbltc0320 + Limits and Scanners catalog. |